TARTU LENNUVÄLJA KLIIMATEATMIK TARTU AERODROME CIMATE HANDBOOK

TARTU LENNUVÄLJA KLIIMATEATMIK TARTU AERODROME CIMATE HANDBOOK

TARTU LENNUVÄLJA KLIIMATEATMIK TARTU AERODROME CIMATE HANDBOOK 2

Koostajad/Compiled by: Kaupo Mändla, Miina Krabbi Kaanekujundus/Cover design: Piret Pärnpuu, Kaupo Mändla Väljaandja/Publisher: Keskkonnaagentuur/Estonian Environment Agency Tallinn, 2021 Autoriõigused/Copyright: Keskkonnaagentuur/Estonian Environment Agency Väljaande andmete kasutamisel või tsiteerimisel palume viidata allikale. When using or quoting the publication, we kindly ask you to reference to the source. Kaanefoto/Cover photo: Tallinna Lennujaam ISBN 978-9985-881-97-2 (pdf) 3

Sisukord / Contents Eessõna / Foreword... 5 Asukoha ja kliima ülevaade / Overview of the location and climate... 6 Akronüümid / Acronyms... 8 AERODROME CLIMATOLOGICAL SUMMARY: RUNWAY VISUAL RANGE AND VISIBILITY... 9 AERODROME CLIMATOLOGICAL SUMMARY: WIND SPEED AND DIRECTION... 45 AERODROME CLIMATOLOGICAL SUMMARY: WIND GUST AND DIRECTION... 57 AERODROME CLIMATOLOGICAL SUMMARY: WIND SPEED AND DIRECTION PER SEASON... 69 AERODROME CLIMATOLOGICAL SUMMARY: AIR TEMPERATURE... 73 AERODROME CLIMATOLOGICAL SUMMARY: ATMOSPHERIC PRESSURE AND HUMIDITY... 97 AERODROME CLIMATOLOGICAL SUMMARY: WEATHER PHENOMENA... 98 AERODROME CLIMATOLOGICAL SUMMARY: WEATHER PHENOMENA, MONTHLY OVERVIEW... 122 AERODROME CLIMATOLOGICAL SUMMARY: PRECIPITATION... 126 Kokkuvõte / Summary... 127 Kasutatud kirjandus / References... 128 4

Eessõna / Foreword Tartu lennuvälja kliimateatmik on Tartu Lennujaama meteoroloogiliste andmete statistiline analüüs. Teatmik sisaldab 7aastase perioodi (2014-2020) kohta meteoroloogiliste elementide (nähtavus, pilvede kõrgus, tuule kiirus ja suund, tuule puhangud ja suund, õhutemperatuur, õhurõhk, õhuniiskus, atmosfäärinähtused, sademed) jaotust ning olulisemaid lennumeteoroloogilisi statistilisi näitajaid. Analüüs tugineb Rahvusvahelise Tsiviillennunduse Organisatsiooni (ICAO) ja Ülemaailmse Meteoroloogia- organisatsiooni (WMO) kliimaandmete töötlemise soovitustele (ICAO konventsiooni 3. lisa; WMO Tehnilised regu-latsioonid nr 49, Vol 2). Sarnane kliimateatmik on varasemalt välja antud 2019. aastal Tallinna Lennuvälja kohta. Tartu aerodrome Climate handbook is a statistical analysis of the observations data provided by Tartu Airport. The handbook covers a 7-year period between 2014 2020, and contains the distribution of meteorological elements (visibility, cloud height, wind speed and direction, wind gust and direction, air temperature, air pressure, humidity, atmospheric phenomenas, precipitation), and significant statistical parameters of aviation meteorology. The analysis are based on the recommendations of the International Civil Aviation Organization (ICAO) and the World Meteorological Organization (WMO) on climatological data processing (Annex 3 to the Convention of the ICAO; WMO Technical regulation no 49, Vol 2). A similar climate handbook was published in 2019 for Tallinn Airfield. 5

Asukoha ja kliima ülevaade / Overview of the location and climate ARP koordinaadid ja asukoht lennuväljal ARP coordinates and site at AD Suund ja kaugus Tartust Direction and distance from Tartu Kõrgus merepinnast / keskmine kõrgeim temperatuur Elevation / Reference temperature Geoidi hälve lennuväljal Geoid undulation at AD MAG VAR / aastane muutus MAG VAR / annual change Lennuvälja haldaja, aadress, telefon, telefaks, e-mail, AFS, URL AD operator, address, telephone, telefax, e-mail, AFS, URL Lubatud liikluse liigid (IFR/VFR) Types of traffic permitted (IFR/VFR) Lennuvälja geograafilised ja administratiivandmed Aerodrome geographical and administrative data 581827N 0264113E Raja 08/26 keskel / In the middle of runway 8/26 5 NM SSW Tartu kesklinnast / from the centre of Tartu 220 ft / 23.1 (JUL) 63 ft 10 E (2020) / +0,2 AS Tallinna Lennujaam Tartu Lennujaam Lennu tn 44 Reola küla, Kambja vald 61707 Tartumaa ESTONIA Tel/phone: +372 730 9210 Fax: +372 730 9216 AFS: EETUZTZX URL: www.tartu-airport.ee e-mail: tartu.info@tll.aero IFR/VFR Joonis 1. Tartu lennuväli (allikas: Maa-ameti geoportaal) Figure 1. Aerodrome of Tartu (source: Geoportal of Estonian Land Board) 6

Kliima Tartu lennuväli paikneb Lõuna-Eesti lavamaal küllaltki tasasel alal, absoluutse kõrgusega merepinnast 67 m. Künklikud kõrgustike piirkonnad jäävad lõuna poole. NNE suunas alla 10 km kaugusel asub Tartu linn. Lähemas ümbruses suuremaid veekogusid ei ole, Pepsi ja Võrtsjärv jäävad eri suunades ligikaudu 35 km kaugusele. Peamine Tartu kliimat mõjutav tegur on geograafiline asend sisemaal kaugemal merest ja suurematest veekogudest. Eesti kuulub parasvöötme Atlantilise kontinentaalse regiooni segametsade allregiooni ning asub merelise ja mandrilise kliima vahelises ülemineku vööndis. Köppeni kliimaklassifikatsiooni kohaselt kuulub Eesti mandriosa Dfb (külma talvega niiske mandriline kliima) kliimatüüpi. Seetõttu on õhutemperatuuri äärmused sisemaal ilmekamad ja suuremad kui rannikul. Kuna sademete hulk aastas ületab aurumise peaaegu kahekordselt, on kliima niiske. Tartu kliimale on üldiselt iseloomulik mõõdukalt külm talv, väheste sademetega jahe kevad, mõõdukalt soe, algul suhteliselt kuiv, hiljem vihmane suvi ning pikk soe sügis. Kontinentaalsema kliima tõttu on kevadel sageli soojem kui rannikul, seevastu sügisel ja talve alguses jahedam. Kliima on mõjutatud põhiliselt tsüklonaalsest tegevusest: enamik tsükloneid lähtub Põhja-Atlandilt ja Põhjamerelt, esineb ka niinimetatud norra ja lõunatsükloneid. Sisemaa asendi tõttu on Tartus mõnevõrra vähem tuulisem kui rannikul (keskmine tuule kiirus 7,6 kt). Tartus puhuvad tuuled valdavalt edela-, lõuna- ja läänekaartest. Põhjakaarte tuuled esinevad sagedamini kevadel ja varasuvel. Tuuled on tugevaimad sügis- ja talvekuudel, eriti detsembris ja jaanuaris (9,1 kt) ning veebruaris (9,0 kt). Kõige nõrgem on tuul suvel augustis (6,7 kt) ja juulis (7,0 kt). Climate Tartu Airport is located on a South-Estonia plateau which is a relatively flat, with absolute height from the sea level 67 m. Hilly uplands situates southwards. Tartu lies less than 10 km from the Airport (bearing NNE), At closer surrounding there are no major water bodies, lake Peipsi and Võrtsjärv are aproximately 35 km away in different directions. The main factor influencing the climate of Tartu is its geographical location in inland, far from sea and larger water bodies. Estonia belongs to the mixed forest subregion of the Atlantic continental region of the temperate zone, and is within a transition zone from maritime to continental climate also. According to the Köppen climate classification, the continental part of Estonia belongs to the Dfb (moist continental climate with cold winter) climate type. Therefore extremes of air temperature are more expressive and bigger than on a coastal areas. As the annual amount of precipitation exceeds evaporation almost two times, the climate is moist. The climate in Tartu is generally characterized by a moderately cold winter, a cool spring with scarce precipitation, initially relatively dry, but later quite rainy summer and a long warm autumn. Comparing with coastal areas due to more continental climate in Tartu it is often warmer in spring, but colder in autumn and beginning of winter. The climate is mostly affected by cyclonic activities, the majority of which are born over Northern Atlantic and over the North Sea, however, the so-called Norwegian and southern cyclones are not rare either. Due to its location in inland, far from sea, Tartu is less windy than coastal areas (average wind speed is 7.6 kt). Prevailing are south-westerly, southerly and westerly winds. In spring and early summer northerly winds take the upper hand. Winds are strongest in autumn and winter, especially in December, January (9.1 kt) and in February (9.0 kt). Winds are weakest in August (6.7 kt) and in July (7.0 kt). 7

Akronüümid / Acronyms AFS aeronavigatsiooniline fikseeritud teenus aeronautical fixed service MIFG madal udu shallow fog ARP lennuvälja viitepunkt aerodroome reference point MIN minimaalne minimum AVG keskmine average mm millimeeter millimeter BCFG udulaigud patches of fog NM meremiilid nautical miles BKN peamiselt pilves broken (cloudiness) OVC täispilves overcast BR uduvine mist RA vihm rain DZ uduvihm drizzle RVR raja nähtavus runway visual range EETU Tartu Lennuvälja rahvus-vaheline kood International code for Tallinn Aerodrome SE kagu south-east FG udu fog SN lumesadu snowfall FZFG jäätuv udu freezing fog THR lävi threshold FT jalg feet TS äikesetorm thunderstorm IFR instrumentaallennureeglid instrument flight rules UTC maailmaaeg coordinated universal time Kt sõlm knot VAR magnetiline variatsioon magnetic variation MAG magnetiline magnetic VFR visuaallennureeglid visual flight rules MAX maksimaalne maximum VIS nähtavuskaugus visibility 8

AERODROME CLIMATOLOGICAL SUMMARY: RUNWAY VISUAL RANGE AND VISIBILITY AERODROME: EETU MONTH: JANUARY PERIOD OF RECORD: 2014-2020 TOTAL NUMBER OF OBSERVATIONS: 4885 OBSERVATION INTERVAL: 30 MIN TIME (UTC) RVR <50 <200 <350 <550 <1500 <800 <1500 <3000 <5000 <30 (100) <60 (200) <90 (300) <60 (200) <150 (500) VIS <300 (1000) <460 (1500) 00:20 - - 1.2 4.8 12.0 4.8 16.9 65.1 75.9 00:50 - - - 2.6 7.0 4.3 12.2 61.7 74.8 01:20 - - 2.4 4.8 8.4 4.8 14.5 61.4 73.5 01:50 - - 0.8 2.4 4.8 2.4 12.7 60.3 74.6 02:20 - - 2.6 5.2 7.8 6.5 16.9 62.3 75.3 02:50-0.8 2.4 3.2 6.5 4.0 13.7 53.2 69.4 03:20 - - - 2.6 10.3 6.4 16.7 50.0 71.8 03:50 - - - 5.3 7.9 6.1 17.5 55.3 70.2 04:20 - - - 4.8 7.2 4.8 18.1 53.0 68.7 04:50 - - - 4.0 8.7 4.8 16.7 54.8 65.9 05:20 - - - 6.1 9.8 6.1 20.7 57.3 75.6 05:50-0.8 0.8 5.6 9.5 6.3 19.0 55.6 73.8 06:20-1.1 2.2 5.4 11.8 6.5 23.7 60.2 76.3 06:50-0.8 1.6 5.5 10.2 5.5 17.2 57.0 75.0 07:20 - - 1.1 6.7 10.1 5.6 16.9 60.7 74.2 07:50-0.8 0.8 4.1 7.4 4.9 12.3 59.8 76.2 08:20 - - 1.2 4.9 6.1 4.9 19.5 61.0 74.4 08:50 - - 0.9 5.4 7.1 5.4 19.6 58.0 78.6 09:20-1.3 2.5 5.1 11.4 3.8 19.0 62.0 84.8 09:50-0.8 1.6 3.3 8.9 4.1 16.3 56.1 75.6 10:20 - - 1.2 2.4 9.6 2.4 18.1 62.7 79.5 10:50 - - 0.9 1.8 4.4 1.8 15.0 59.3 78.8 11:20 - - - 2.3 5.8 2.3 10.5 59.3 74.4 11:50 - - 1.6 2.4 4.0 2.4 14.4 57.6 73.6 12:20 - - 1.2 1.2 3.5 2.4 9.4 60.0 74.1 12:50 - - - 1.7 3.4 2.6 6.9 59.5 77.6 13:20 - - - 3.0 4.5 3.0 12.1 65.2 78.8 13:50 - - - 1.8 2.7 1.8 8.0 61.1 79.6 14:20 - - - 2.6 3.8 3.8 15.4 59.0 79.5 14:50-0.9 0.9 1.8 1.8 1.8 12.6 64.0 80.2 15:20 - - - - 2.5 1.3 15.2 59.5 77.2 15:50 - - - 0.8 3.2 3.2 12.8 56.8 68.8 9

TIME (UTC) RVR <50 <200 <350 <550 <1500 <800 <1500 <3000 <5000 <30 (100) <60 (200) <90 (300) <60 (200) <150 (500) VIS <300 (1000) <460 (1500) 16:20 - - - 1.2 3.7 2.5 14.8 60.5 71.6 16:50 - - - 0.8 3.4 2.5 13.6 53.4 66.1 17:20 - - - 1.1 4.6 3.4 17.2 50.6 71.3 17:50 - - - - 4.1 2.4 16.3 52.0 71.5 18:20 - - - 1.2 7.0 4.7 18.6 61.6 74.4 18:50 - - - 0.8 6.8 3.0 15.2 53.0 74.2 19:20 - - 1.2 1.2 6.0 2.4 14.3 52.4 76.2 19:50 - - - 1.6 5.4 2.3 13.2 49.6 74.4 20:20 - - - 1.1 5.4 2.2 18.5 47.8 72.8 20:50 - - - 2.4 5.6 4.0 21.6 54.4 75.2 21:20 - - - 2.6 10.3 3.8 23.1 61.5 80.8 21:50 - - 0.9 3.5 9.6 5.2 21.7 53.9 79.1 22:20 - - - 3.5 9.3 4.7 24.4 61.6 77.9 22:50 - - 0.8 4.2 6.8 4.2 16.1 58.5 78.0 23:20 - - - 3.6 12.0 4.8 20.5 57.8 73.5 23:50 - - - 1.6 7.3 3.3 16.3 53.7 74.8 Mean - 0.2 0.6 3.0 6.9 3.9 16.2 57.7 75.0 8000 m nähtavuskauguse ja 2000 jala kõrguse pilve alumise piiri asemel on kasutatud vastavalt väärtusi 5000 m ja 1500 jalga, mis on kohalike lennuprotseduuride ja erakorraliste ilmateadete aluseks. Raja nähtavuskauguse esinemissagedus alla 200 m on jaanuaris 0,2%. Alla 1500 m horisontaalse nähtavuse ja/või alla 500 jala pilve alumise piiri kõrguse esinemissagedus on 16,2%. Instead of general visibility 8000 m and cloud base 2000 ft, visibility 5000 m and cloud base 1500 ft were used, since these are the limit values in local flight procedures and special weather reports. In January, the observed occurrence of the Runway Visual Range minium values below 200 m is 0.2%. The occurrence frequency of horizontal visibility below 1500 m and/or cloud ceiling below 500 ft in January is 16.2%. 10

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AERODROME: EETU MONTH: FEBUARY PERIOD OF RECORD: 2014-2020 TOTAL NUMBER OF OBSERVATIONS: 3762 OBSERVATION INTERVAL: 30 MIN TIME (UTC) RVR <50 <200 <350 <550 <1500 <800 <1500 <3000 <5000 <30 (100) <60 (200) <90 (300) <60 (200) <150 (500) VIS <300 (1000) <460 (1500) 00:20 - - - 4.4 10.3 4.4 27.9 72.1 83.8 00:50 - - - 5.9 10.8 6.9 26.5 65.7 79.4 01:20 - - - 7.6 9.1 7.6 30.3 75.8 83.3 01:50 - - - 6.9 10.9 7.9 28.7 64.4 81.2 02:20 - - - 4.3 10.1 4.3 29.0 72.5 84.1 02:50 - - - 6.5 12.1 8.4 26.2 62.6 81.3 03:20 - - - 5.7 11.4 5.7 22.9 77.1 85.7 03:50 - - - 7.1 14.1 7.1 27.3 62.6 72.7 04:20 - - - 3.0 14.9 3.0 35.8 74.6 82.1 04:50 - - - 5.1 14.3 5.1 30.6 62.2 74.5 05:20 - - - 3.1 15.6 3.1 35.9 73.4 81.3 05:50 - - - 5.0 13.9 5.0 26.7 64.4 79.2 06:20-1.4 1.4 2.9 11.4 1.4 27.1 72.9 88.6 06:50 - - - 2.9 10.7 3.9 21.4 62.1 78.6 07:20 - - - 2.9 12.9 2.9 25.7 68.6 80.0 07:50 - - - 2.0 12.1 2.0 22.2 63.6 85.9 08:20 - - - 1.5 7.5 1.5 23.9 64.2 83.6 08:50 - - - 3.0 7.9 4.0 19.8 60.4 82.2 09:20 - - - 3.0 7.5 4.5 16.4 56.7 77.6 09:50 - - - 2.0 6.1 1.0 12.1 59.6 79.8 10:20 - - - - 3.3-13.3 60.0 78.3 10:50 - - - - 3.3-11.1 56.7 80.0 11:20 - - - - 5.2-12.1 56.9 79.3 11:50 - - - - 3.4-9.0 46.1 76.4 12:20 - - 1.7 1.7 3.4-11.9 47.5 67.8 12:50-1.2 1.2 1.2 1.2 1.2 12.8 45.3 66.3 13:20 - - 1.8 1.8 1.8-12.7 45.5 65.5 13:50 - - 1.1 1.1 1.1-12.6 44.8 65.5 14:20 - - - - - - 11.5 47.5 68.9 14:50-1.2 1.2 1.2 3.5 1.2 10.5 51.2 67.4 15:20 - - - - 5.7-13.2 50.9 64.2 15:50 - - - - 3.5-12.9 48.2 67.1 12

TIME (UTC) RVR <50 <200 <350 <550 <1500 <800 <1500 <3000 <5000 <30 (100) <60 (200) <90 (300) <60 (200) <150 (500) VIS <300 (1000) <460 (1500) 16:20 - - - - 5.8-11.5 46.2 55.8 16:50 - - - - 3.7-17.3 42.0 54.3 17:20 - - - - 3.4-19.0 41.4 58.6 17:50 - - - - 4.7-17.4 41.9 65.1 18:20 - - - 2.0 6.0 2.0 18.0 52.0 72.0 18:50 - - - 1.1 10.2 1.1 23.9 44.3 67.0 19:20 - - - 3.8 13.2 3.8 22.6 56.6 77.4 19:50-1.2 1.2 3.6 9.6 3.6 18.1 49.4 74.7 20:20 - - - 5.1 11.9 5.1 20.3 54.2 76.3 20:50 - - - 5.4 10.8 5.4 24.7 51.6 72.0 21:20 - - - 6.3 10.9 6.3 29.7 59.4 73.4 21:50-1.0 1.0 6.2 10.3 6.2 26.8 50.5 72.2 22:20 - - - 5.8 10.1 5.8 26.1 56.5 69.6 22:50 - - - 7.1 11.2 7.1 19.4 54.1 72.4 23:20 - - - 10.4 11.9 10.4 26.9 67.2 76.1 23:50 - - - 6.5 12.1 8.4 27.1 58.9 72.0 Mean - 0.1 0.2 3.2 8.4 3.3 21.0 57.5 74.6 8000 m nähtavuskauguse ja 2000 jala kõrguse pilve alumise piiri asemel on kasutatud vastavalt väärtusi 5000 m ja 1500 jalga, mis on kohalike lennuprotseduuride ja erakorraliste ilmateadete aluseks. Raja nähtavuskauguse esinemissagedus alla 200 m on veebruaris 0,1%. Alla 1500 m horisontaalse nähtavuse ja/või alla 500 jala pilve alumise piiri kõrguse esinemissagedus on 21%. Instead of general visibility 8000 m and cloud base 2000 ft, visibility 5000 m and cloud base 1500 ft were used, since these are the limit values in local flight procedures and special weather reports. In February, the observed occurrence of the Runway Visual Range minium values below 200 m is 0.1%. The occurrence frequency of horizontal visibility below 1500 m and/or cloud ceiling below 500 ft in February is 21%. 13

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AERODROME: EETU MONTH: MARCH PERIOD OF RECORD: 2014-2020 TOTAL NUMBER OF OBSERVATIONS: 3486 OBSERVATION INTERVAL: 30 MIN TIME (UTC) RVR <50 <200 <350 <550 <1500 <800 <1500 <3000 <5000 <30 (100) <60 (200) <90 (300) <60 (200) <150 (500) VIS <300 (1000) <460 (1500) 00:20 - - - 1.4 5.5 2.7 11.0 37.0 58.9 00:50 - - - 8.6 8.6 8.6 16.0 37.0 55.6 01:20 - - - 4.3 5.7 4.3 10.0 34.3 55.7 01:50 - - - 1.1 5.7 1.1 11.5 40.2 57.5 02:20 - - - 1.6 4.8 1.6 20.6 42.9 57.1 02:50 - - 1.1 5.6 10.1 7.9 19.1 42.7 53.9 03:20 - - - 1.5 3.1 1.5 18.5 40.0 55.4 03:50 - - - 3.4 7.9 3.4 22.5 40.4 52.8 04:20 - - - - 1.4 1.4 16.9 42.3 50.7 04:50 - - - 2.2 6.5 2.2 19.6 44.6 55.4 05:20 - - - 1.5 4.5 1.5 18.2 39.4 50.0 05:50 - - - 5.0 11.0 6.0 22.0 44.0 57.0 06:20 - - 1.4 2.8 5.6 2.8 18.1 45.8 65.3 06:50 - - 3.4 5.7 11.5 5.7 17.2 46.0 63.2 07:20 - - - 4.5 9.0 4.5 13.4 43.3 71.6 07:50 - - 1.1 4.3 9.8 6.5 16.3 44.6 66.3 08:20 - - 1.5 1.5 4.5 1.5 10.6 43.9 62.1 08:50 - - 1.2 2.4 6.1 2.4 11.0 42.7 61.0 09:20 - - - 1.7 3.4 1.7 11.9 42.4 61.0 09:50 - - - - 2.6-6.6 32.9 59.2 10:20 - - - 1.7 1.7 1.7 5.0 38.3 56.7 10:50 - - - - 1.3-2.6 34.6 50.0 11:20 - - - - 1.6-6.3 30.2 50.8 11:50 - - - - 1.3-1.3 28.2 44.9 12:20 - - - - - - 3.4 31.0 44.8 12:50 - - - - 1.3-1.3 27.6 44.7 13:20 - - - - 2.0-4.0 28.0 52.0 13:50 - - 1.4 1.4 2.9 1.4 2.9 36.2 52.2 14:20 - - - 1.7 1.7 1.7 6.8 30.5 44.1 14:50 - - - - 1.3-3.9 28.9 43.4 15:20 - - - 1.8 1.8 1.8 5.5 23.6 43.6 15:50 - - - 1.4 2.8 1.4 4.2 31.0 45.1 15

RVR VIS TIME (UTC) <50 <200 <350 <550 <1500 <800 <1500 <3000 <5000 <30 (100) <60 (200) <90 (300) <60 (200) <150 (500) <300 (1000) <460 (1500) 16:20 - - - 5.2 5.2 3.4 6.9 34.5 48.3 16:50 - - 1.4 1.4 4.1 1.4 5.4 31.1 44.6 17:20 - - - 1.5 4.6 3.1 7.7 23.1 40.0 17:50 - - - - 3.4 1.1 6.8 28.4 43.2 18:20 - - - 3.1 3.1 3.1 10.9 37.5 46.9 18:50 - - - 1.3 2.6 2.6 9.1 36.4 44.2 19:20 - - - 3.3 4.9 4.9 9.8 37.7 49.2 19:50 - - 1.3 3.9 5.3 3.9 9.2 28.9 42.1 20:20 - - - 1.7 5.0 3.3 8.3 38.3 51.7 20:50-1.3 1.3 3.8 5.0 5.0 10.0 32.5 51.3 21:20 - - 3.2 3.2 3.2 3.2 9.5 38.1 49.2 21:50 - - - 2.7 5.4 4.1 10.8 35.1 45.9 22:20 - - 1.6 4.8 4.8 4.8 14.5 40.3 53.2 22:50-1.1 2.3 6.8 6.8 6.8 13.6 35.2 44.3 23:20 - - - 3.0 7.6 6.1 10.6 37.9 50.0 23:50-2.2 3.3 4.4 7.8 6.7 12.2 36.7 53.3 Mean - 0.1 0.5 2.4 4.7 2.9 10.7 36.4 52.1 8000 m nähtavuskauguse ja 2000 jala kõrguse pilve alumise piiri asemel on kasutatud vastavalt väärtusi 5000 m ja 1500 jalga, mis on kohalike lennuprotseduuride ja erakorraliste ilmateadete aluseks. Raja nähtavuskauguse esinemissagedus alla 200 m on märtsis 0,1%. Alla 1500 m horisontaalse nähtavuse ja/või alla 500 jala pilve alumise piiri kõrguse esinemissagedus on 10,7%. Instead of general visibility 8000 m and cloud base 2000 ft, visibility 5000 m and cloud base 1500 ft were used, since these are the limit values in local flight procedures and special weather reports. In March, the observed occurrence of the Runway Visual Range minium values below 200 m is 0.1%. The occurrence frequency of horizontal visibility below 1500 m and/or cloud ceiling below 500 ft in March is 10.7%. 16

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AERODROME: EETU MONTH: APRIL PERIOD OF RECORD: 2014-2020 TOTAL NUMBER OF OBSERVATIONS: 2617 OBSERVATION INTERVAL: 30 MIN TIME (UTC) RVR <50 <200 <350 <550 <1500 <800 <1500 <3000 <5000 <30 (100) <60 (200) <90 (300) <60 (200) <150 (500) VIS <300 (1000) <460 (1500) 00:20 - - - 3.5 5.3 3.5 10.5 31.6 47.4 00:50 - - - 4.4 7.4 5.9 16.2 36.8 47.1 01:20 - - - 3.8 5.7 3.8 7.5 39.6 54.7 01:50 - - - 5.6 8.3 5.6 16.7 36.1 51.4 02:20 - - 1.9 3.8 7.7 5.8 13.5 40.4 53.8 02:50 - - - 5.2 10.4 5.2 19.5 37.7 45.5 03:20 - - 3.6 5.4 8.9 5.4 16.1 41.1 62.5 03:50 - - 1.4 7.0 11.3 7.0 21.1 45.1 54.9 04:20 - - 1.5 6.2 9.2 6.2 12.3 44.6 60.0 04:50 - - 1.4 6.8 12.2 8.1 23.0 45.9 60.8 05:20 - - 3.0 6.0 9.0 6.0 16.4 52.2 64.2 05:50 - - 1.3 5.3 15.8 5.3 21.1 51.3 64.5 06:20 - - 1.8 8.8 14.0 7.0 14.0 52.6 68.4 06:50 - - - 9.0 14.1 7.7 19.2 44.9 65.4 07:20-1.8 1.8 5.4 7.1 3.6 16.1 35.7 57.1 07:50 - - - 2.8 5.6 2.8 12.5 34.7 55.6 08:20 - - - - 1.6-8.1 25.8 41.9 08:50 - - - 1.5 2.9 1.5 10.3 29.4 44.1 09:20 - - - - - - 5.7 28.3 37.7 09:50 - - - - 1.6-6.3 29.7 40.6 10:20 - - - - 1.8-5.5 21.8 32.7 10:50 - - - - - - 6.6 19.7 31.1 11:20 - - - - - - 10.6 21.3 36.2 11:50 - - - - - - 4.8 17.7 32.3 12:20 - - - - - - 8.9 17.8 24.4 12:50 - - - - - - 7.7 19.2 30.8 13:20 - - - - - - 7.5 17.5 20.0 13:50 - - - - - - 7.9 18.4 28.9 14:20 - - - - - - 11.1 19.4 19.4 14:50 - - - - 2.0-2.0 18.4 26.5 15:20 - - - - 2.5-5.0 17.5 20.0 15:50 - - - - 2.5-2.5 20.0 27.5 18

TIME (UTC) RVR <50 <200 <350 <550 <1500 <800 <1500 <3000 <5000 <30 (100) <60 (200) <90 (300) <60 (200) <150 (500) VIS <300 (1000) <460 (1500) 16:20 - - - - 2.2-2.2 11.1 17.8 16:50 - - - - 1.8-1.8 14.5 16.4 17:20 - - - - - - 2.4 11.9 19.0 17:50 - - - - 2.2 2.2 6.7 22.2 31.1 18:20 - - - - - - 5.4 18.9 24.3 18:50 - - - - - - 7.1 23.8 35.7 19:20 - - - - 2.9-5.9 26.5 35.3 19:50-4.3 4.3 4.3 8.7 4.3 13.0 34.8 41.3 20:20 - - - 2.1 2.1 2.1 6.4 25.5 29.8 20:50 - - 1.9 3.7 5.6 3.7 9.3 31.5 37.0 21:20 - - - 2.6 5.1 2.6 10.3 23.1 38.5 21:50 - - - 3.6 7.1 5.4 14.3 26.8 32.1 22:20 - - - 5.0 7.5 5.0 15.0 30.0 45.0 22:50 - - - 3.3 8.3 5.0 15.0 26.7 35.0 23:20 - - - 3.7 5.6 3.7 9.3 25.9 40.7 23:50 - - - 5.2 10.3 5.2 13.8 34.5 48.3 Mean - 0.1 0.5 2.6 4.9 2.7 10.5 29.2 40.3 8000 m nähtavuskauguse ja 2000 jala kõrguse pilve alumise piiri asemel on kasutatud vastavalt väärtusi 5000 m ja 1500 jalga, mis on kohalike lennuprotseduuride ja erakorraliste ilmateadete aluseks. Raja nähtavuskauguse esinemissagedus alla 200 m on aprillis 0,1%. Alla 1500 m horisontaalse nähtavuse ja/või alla 500 jala pilve alumise piiri kõrguse esinemissagedus on 10,5%. Instead of general visibility 8000 m and cloud base 2000 ft, visibility 5000 m and cloud base 1500 ft were used, since these are the limit values in local flight procedures and special weather reports. In April, the observed occurrence of the Runway Visual Range minium values below 200 m is 0.1%. The occurrence frequency of horizontal visibility below 1500 m and/or cloud ceiling below 500 ft in April is 10.5%. 19

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AERODROME: EETU MONTH: MAY PERIOD OF RECORD: 2014-2020 TOTAL NUMBER OF OBSERVATIONS: 1745 OBSERVATION INTERVAL: 30 MIN TIME (UTC) RVR <50 <200 <350 <550 <1500 <800 <1500 <3000 <5000 <30 (100) <60 (200) <90 (300) <60 (200) <150 (500) VIS <300 (1000) <460 (1500) 00:20 - - - 3.6 3.6 3.6 3.6 10.7 14.3 00:50 - - - 2.1 4.3 2.1 8.5 21.3 23.4 01:20 - - 3.7 3.7 3.7 3.7 3.7 3.7 14.8 01:50 - - - 4.3 4.3 4.3 6.4 17.0 29.8 02:20 - - - 3.4 3.4 3.4 6.9 17.2 27.6 02:50 - - 1.8 5.4 7.1 5.4 7.1 26.8 41.1 03:20-3.2 6.5 6.5 6.5 6.5 6.5 19.4 29.0 03:50 - - - 5.6 7.4 5.6 9.3 35.2 46.3 04:20 - - - 6.5 6.5 6.5 9.7 25.8 35.5 04:50 - - - 3.8 3.8 3.8 11.5 38.5 55.8 05:20 - - - 2.9 5.7 2.9 5.7 22.9 42.9 05:50 - - - 2.0 2.0 2.0 8.2 32.7 65.3 06:20 - - - - - - 4.2 20.8 54.2 06:50 - - - - - - 2.2 33.3 53.3 07:20 - - - - - - 3.3 26.7 33.3 07:50 - - - - - - - 18.0 32.0 08:20 - - - - - - - 14.7 29.4 08:50 - - - - - - 1.9 11.5 26.9 09:20 - - - - - - - 14.7 29.4 09:50 - - - - - - - 12.0 28.0 10:20 - - - - - - - 11.1 25.0 10:50 - - - - - - - 6.0 24.0 11:20 - - - - - - - 7.7 19.2 11:50 - - - - - - - 13.6 22.7 12:20 - - - - - - - 12.0 12.0 12:50 - - - - - - - 13.9 27.8 13:20 - - - - - - - 10.0 20.0 13:50 - - - - - - 2.5 15.0 27.5 14:20 - - - - - - - 11.5 23.1 14:50 - - - - - - - 8.1 21.6 15:20 - - - - - - - 8.6 11.4 15:50 - - - - - - 2.4 7.3 17.1 21

TIME (UTC) RVR <50 <200 <350 <550 <1500 <800 <1500 <3000 <5000 <30 (100) <60 (200) <90 (300) <60 (200) <150 (500) VIS <300 (1000) <460 (1500) 16:20 - - - - - - - 6.1 12.1 16:50 - - - - - - 2.3 4.5 13.6 17:20 - - - - - - 3.6 7.1 10.7 17:50 - - - - 2.6-2.6 7.7 7.7 18:20 - - - - 4.0-4.0 4.0 4.0 18:50 - - - - 2.4-2.4 7.3 9.8 19:20 - - - 5.3 5.3 5.3 5.3 10.5 10.5 19:50 - - - - 2.7-8.1 24.3 24.3 20:20-6.3 6.3 6.3 12.5-12.5 12.5 12.5 20:50 - - - - 2.3-7.0 18.6 23.3 21:20 - - - - - - - 7.1 7.1 21:50 - - - - - - 4.5 18.2 25.0 22:20 - - - 8.3 8.3 8.3 8.3 12.5 16.7 22:50 - - - 2.1 2.1 2.1 8.3 18.8 20.8 23:20 - - - - 3.1-3.1 6.3 6.3 23:50 - - - 2.7 2.7 2.7 8.1 27.0 32.4 Mean - 0.2 0.4 1.5 2.2 1.4 3.8 15.4 25.0 8000 m nähtavuskauguse ja 2000 jala kõrguse pilve alumise piiri asemel on kasutatud vastavalt väärtusi 5000 m ja 1500 jalga, mis on kohalike lennuprotseduuride ja erakorraliste ilmateadete aluseks. Raja nähtavuskauguse esinemissagedus alla 200 m on mais 0,2%. Alla 1500 m horisontaalse nähtavuse ja/või alla 500 jala pilve alumise piiri kõrguse esinemissagedus on 3,8%. Instead of general visibility 8000 m and cloud base 2000 ft, visibility 5000 m and cloud base 1500 ft were used, since these are the limit values in local flight procedures and special weather reports. In May, the observed occurrence of the Runway Visual Range minium values below 200 m is 0.2%. The occurrence frequency of horizontal visibility below 1500 m and/or cloud ceiling below 500 ft in May is 3.8%. 22

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AERODROME: EETU MONTH: JUNE PERIOD OF RECORD: 2014-2020 TOTAL NUMBER OF OBSERVATIONS: 1916 OBSERVATION INTERVAL: 30 MIN TIME (UTC) RVR <50 <200 <350 <550 <1500 <800 <1500 <3000 <5000 <30 (100) <60 (200) <90 (300) <60 (200) <150 (500) VIS <300 (1000) <460 (1500) 00:20 - - 2.7 2.7 5.4 5.4 5.4 29.7 40.5 00:50 - - 2.1 2.1 4.3 2.1 4.3 23.4 27.7 01:20 - - - - 3.1 3.1 3.1 28.1 40.6 01:50 - - - - 2.4 2.4 9.5 31.0 33.3 02:20 - - 3.4 3.4 3.4 3.4 6.9 27.6 44.8 02:50 - - - 3.8 3.8 3.8 11.3 30.2 37.7 03:20 - - 5.3 5.3 7.9 5.3 10.5 31.6 36.8 03:50 - - 1.7 1.7 6.8 1.7 10.2 27.1 37.3 04:20 - - - 2.6 7.7 2.6 15.4 30.8 43.6 04:50 - - - 1.8 3.6 1.8 8.9 30.4 42.9 05:20 - - - - - - 8.6 40.0 54.3 05:50 - - - - - - 6.3 39.6 54.2 06:20 - - - - - - 6.9 37.9 48.3 06:50 - - - - - - 5.7 43.4 54.7 07:20 - - - - - - 3.2 41.9 51.6 07:50 - - - - - - 1.9 28.3 39.6 08:20 - - - - - - 2.8 33.3 47.2 08:50 - - - - - - - 23.9 43.5 09:20 - - - - - - - 21.9 46.9 09:50 - - - - - - - 17.2 24.1 10:20 - - - - - - - 29.0 38.7 10:50 - - - - - - 4.0 24.0 32.0 11:20 - - 3.7 3.7 3.7-11.1 22.2 29.6 11:50 - - - - - - 4.5 15.9 22.7 12:20 - - - - - - 8.3 20.8 37.5 12:50 - - - - - - 1.9 17.3 32.7 13:20 - - - - - - 3.7 22.2 29.6 13:50 - - - - - - 9.1 21.2 27.3 14:20 - - - - - - 3.0 15.2 24.2 14:50 - - - - 2.8-8.3 25.0 30.6 15:20 - - - - - - 3.2 12.9 25.8 15:50 - - - - - - 3.8 13.5 19.2 24

TIME (UTC) RVR <50 <200 <350 <550 <1500 <800 <1500 <3000 <5000 <30 (100) <60 (200) <90 (300) <60 (200) <150 (500) VIS <300 (1000) <460 (1500) 16:20 - - - - - - 2.9 8.8 11.8 16:50 - - - - - - 3.8 9.6 13.5 17:20 - - - - - - 2.8 8.3 11.1 17:50 - - - - - - 5.0 17.5 17.5 18:20 - - - - - - 6.7 16.7 16.7 18:50 - - 2.2 2.2 2.2 2.2 4.3 13.0 17.4 19:20 - - - - 3.3-10.0 20.0 23.3 19:50 - - - - 4.3-10.6 14.9 17.0 20:20 - - - - 6.5-12.9 19.4 25.8 20:50 - - - - 4.7-7.0 14.0 14.0 21:20 - - - - 3.0-6.1 18.2 24.2 21:50 - - - - 4.8-7.1 16.7 21.4 22:20 - - - 3.4 6.9 3.4 6.9 24.1 24.1 22:50 - - - 2.2 4.3 2.2 6.5 17.4 17.4 23:20 - - - - 6.1-9.1 27.3 30.3 23:50 - - - 2.0 9.8 2.0 13.7 23.5 29.4 Mean - - 0.4 0.8 2.3 0.9 6.2 23.5 31.6 8000 m nähtavuskauguse ja 2000 jala kõrguse pilve alumise piiri asemel on kasutatud vastavalt väärtusi 5000 m ja 1500 jalga, mis on kohalike lennuprotseduuride ja erakorraliste ilmateadete aluseks. Raja nähtavuskauguse väärtusi alla 200 m juunis ei esinenud. Alla 1500 m horisontaalse nähtavuse ja/või alla 500 jala pilve alumise piiri kõrguse esinemissagedus on 6,2%. Instead of general visibility 8000 m and cloud base 2000 ft, visibility 5000 m and cloud base 1500 ft were used, since these are the limit values in local flight procedures and special weather reports. In June, the observed occurrence of the Runway Visual Range minium values below 200 m was not detected. The occurrence frequency of horizontal visibility below 1500 m and/or cloud ceiling below 500 ft in June is 6.2%. 25

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AERODROME: EETU MONTH: JULY PERIOD OF RECORD: 2014-2020 TOTAL NUMBER OF OBSERVATIONS: 2043 OBSERVATION INTERVAL: 30 MIN TIME (UTC) RVR <50 <200 <350 <550 <1500 <800 <1500 <3000 <5000 <30 (100) <60 (200) <90 (300) <60 (200) <150 (500) VIS <300 (1000) <460 (1500) 00:20 - - 2.7 5.4 5.4 5.4 13.5 21.6 32.4 00:50 - - - 5.7 7.5 5.7 13.2 22.6 26.4 01:20 - - 2.4 7.1 9.5 7.1 19.0 31.0 35.7 01:50 - - 1.7 3.4 5.2 3.4 13.8 32.8 36.2 02:20 - - 2.3 4.5 11.4 4.5 15.9 38.6 52.3 02:50 - - - 5.6 9.7 6.9 12.5 27.8 34.7 03:20-3.6 5.5 9.1 14.5 10.9 18.2 30.9 40.0 03:50 - - 2.9 5.8 13.0 8.7 18.8 37.7 50.7 04:20 - - 2.0 10.2 14.3 10.2 22.4 42.9 53.1 04:50 - - - 4.6 7.7 4.6 20.0 47.7 60.0 05:20 - - - 2.4 9.8 2.4 14.6 51.2 70.7 05:50 - - - - 3.4-10.3 44.8 65.5 06:20 - - - 2.8 5.6 2.8 16.7 41.7 66.7 06:50 - - - - 4.2-8.3 31.3 50.0 07:20 - - - - 4.5-9.1 27.3 40.9 07:50 - - - - 4.1-8.2 20.4 36.7 08:20 - - - - 6.1-12.1 24.2 42.4 08:50 - - - - 1.8-7.1 14.3 30.4 09:20 - - - - - - 4.8 14.3 23.8 09:50 - - - - - - 6.0 16.0 22.0 10:20 - - - - - - 2.7 13.5 24.3 10:50 - - - - - - 2.0 12.2 24.5 11:20 - - - - - - 2.9 11.8 23.5 11:50 - - - - - - 6.4 19.1 27.7 12:20 - - - - - - 3.4 20.7 31.0 12:50 - - - - - - 2.5 15.0 25.0 13:20 - - - - - - 3.7 22.2 37.0 13:50 - - - - - - 5.3 13.2 21.1 14:20 - - - - - - 7.7 19.2 30.8 14:50 - - - - - - 5.1 12.8 20.5 15:20 - - - - - - 5.1 10.3 15.4 15:50 - - - - - - 2.9 14.7 17.6 27

TIME (UTC) RVR <50 <200 <350 <550 <1500 <800 <1500 <3000 <5000 <30 (100) <60 (200) <90 (300) <60 (200) <150 (500) VIS <300 (1000) <460 (1500) 16:20 - - - - - - 2.3 13.6 15.9 16:50 - - - - - - 3.7 7.4 11.1 17:20 - - - - - - 5.6 13.9 16.7 17:50 - - - - - - 1.9 9.4 15.1 18:20 - - - - - - 2.9 8.8 14.7 18:50 - - - - - - 2.3 9.3 16.3 19:20 - - - - 3.4-6.9 17.2 20.7 19:50 - - - - - - 2.9 8.8 14.7 20:20 - - - - - - 3.3 16.7 23.3 20:50 - - - - - - 2.5 10.0 10.0 21:20 - - - - - - - 20.0 20.0 21:50 - - - - - - - 5.6 8.3 22:20 - - - - - - 4.3 13.0 17.4 22:50 - - - - - - - 7.1 9.5 23:20 - - - 3.3 6.7 3.3 1-16.7 20.0 23:50 - - - - 2.2-4.4 13.3 22.2 Mean - 0.1 0.4 1.5 3.1 1.6 7.7 20.7 29.7 8000 m nähtavuskauguse ja 2000 jala kõrguse pilve alumise piiri asemel on kasutatud vastavalt väärtusi 5000 m ja 1500 jalga, mis on kohalike lennuprotseduuride ja erakorraliste ilmateadete aluseks. Raja nähtavuskauguse esinemissagedus alla 200 m on juulis 0,1%. Alla 1500 m horisontaalse nähtavuse ja/või alla 500 jala pilve alumise piiri kõrguse esinemissagedus on 7,7%. Instead of general visibility 8000 m and cloud base 2000 ft, visibility 5000 m and cloud base 1500 ft were used, since these are the limit values in local flight procedures and special weather reports. In July, the observed occurrence of the Runway Visual Range minium values below 200 m is 0.1%. The occurrence frequency of horizontal visibility below 1500 m and/or cloud ceiling below 500 ft in July is 7.7%. 28

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AERODROME: EETU MONTH: AUGUST PERIOD OF RECORD: 2014-2020 TOTAL NUMBER OF OBSERVATIONS: 1912 OBSERVATION INTERVAL: 30 MIN TIME (UTC) RVR <50 <200 <350 <550 <1500 <800 <1500 <3000 <5000 <30 (100) <60 (200) <90 (300) <60 (200) <150 (500) VIS <300 (1000) <460 (1500) 00:20 - - - 2.4 7.1 4.8 7.1 23.8 28.6 00:50 - - - 3.5 7.0 5.3 7.0 24.6 29.8 01:20 - - - - 8.5 4.3 10.6 29.8 36.2 01:50 - - 1.6 9.7 14.5 11.3 14.5 27.4 35.5 02:20-2.6 5.3 10.5 15.8 10.5 21.1 28.9 36.8 02:50 - - - 8.1 14.5 9.7 19.4 33.9 38.7 03:20 - - - 10.2 16.3 10.2 20.4 32.7 34.7 03:50 - - 1.6 9.7 17.7 12.9 21.0 37.1 40.3 04:20 - - - 5.7 13.2 5.7 17.0 30.2 35.8 04:50 - - - 9.1 18.2 10.6 27.3 43.9 50.0 05:20 - - 4.7 11.6 18.6 11.6 25.6 53.5 62.8 05:50 - - 1.9 7.5 15.1 7.5 22.6 60.4 73.6 06:20 - - - 5.9 11.8 5.9 23.5 44.1 61.8 06:50 - - - 1.9 3.8 1.9 15.1 37.7 58.5 07:20 - - - - - - 12.5 37.5 50.0 07:50 - - - 2.0 2.0 2.0 7.8 35.3 52.9 08:20 - - - - - - - 27.3 36.4 08:50 - - - - - - 5.0 22.5 25.0 09:20 - - - - - - - 17.9 28.2 09:50 - - - - - - - 17.8 24.4 10:20 - - - - - - - 15.0 20.0 10:50 - - - - - - - 16.7 16.7 11:20 - - - - - - - 19.4 19.4 11:50 - - - - - - - 14.6 22.0 12:20 - - - - - - - 15.6 28.1 12:50 - - - - 2.8-5.6 13.9 30.6 13:20 - - - - 4.8-9.5 14.3 38.1 13:50 - - - - 3.7-3.7 7.4 33.3 14:20 - - - - - - - 6.3 31.3 14:50 - - - - - - - 17.2 34.5 15:20 - - - - - - - 21.9 21.9 15:50 - - - - - - - 10.5 18.4 30

TIME (UTC) RVR <50 <200 <350 <550 <1500 <800 <1500 <3000 <5000 <30 (100) <60 (200) <90 (300) <60 (200) <150 (500) VIS <300 (1000) <460 (1500) 16:20 - - - - - - - 10.7 17.9 16:50 - - - 1.9 1.9 1.9 1.9 9.4 11.3 17:20 - - - 3.1 3.1 3.1 3.1 12.5 15.6 17:50 - - - - - - - 9.3 14.0 18:20 - - - - - - 2.5 12.5 20.0 18:50 - - - - - - 3.0 15.2 18.2 19:20 - - - - - - 5.6 27.8 27.8 19:50 - - - - - - 5.7 22.9 25.7 20:20 - - - - - - 5.3 26.3 31.6 20:50 - - - - 3.3-6.7 20.0 20.0 21:20 - - - - - - 4.3 17.4 21.7 21:50 - - - 2.6 5.1 2.6 12.8 28.2 30.8 22:20 - - - 3.4 3.4 3.4 10.3 17.2 17.2 22:50 - - - 2.1 2.1 2.1 6.4 19.1 23.4 23:20 - - - 2.6 5.3 5.3 7.9 21.1 26.3 23:50 - - - 3.4 3.4 3.4 8.5 22.0 25.4 Mean - 0.1 0.3 2.4 4.6 2.8 7.9 23.6 31.3 8000 m nähtavuskauguse ja 2000 jala kõrguse pilve alumise piiri asemel on kasutatud vastavalt väärtusi 5000 m ja 1500 jalga, mis on kohalike lennuprotseduuride ja erakorraliste ilmateadete aluseks. Raja nähtavuskauguse esinemissagedus alla 200 m on augustis 0,1%. Alla 1500 m horisontaalse nähtavuse ja/või alla 500 jala pilve alumise piiri kõrguse esinemissagedus on 7,9%. Instead of general visibility 8000 m and cloud base 2000 ft, visibility 5000 m and cloud base 1500 ft were used, since these are the limit values in local flight procedures and special weather reports. In August, the observed occurrence of the Runway Visual Range minium values below 200 m is 0.1%. The occurrence frequency of horizontal visibility below 1500 m and/or cloud ceiling below 500 ft in August is 7.9%. 31

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AERODROME: EETU MONTH: SEPTEMBER PERIOD OF RECORD: 2014-2020 TOTAL NUMBER OF OBSERVATIONS: 2274 OBSERVATION INTERVAL: 30 MIN TIME (UTC) RVR <50 <200 <350 <550 <1500 <800 <1500 <3000 <5000 <30 (100) <60 (200) <90 (300) <60 (200) <150 (500) VIS <300 (1000) <460 (1500) 00:20 - - 2.6 13.2 13.2 13.2 18.4 36.8 47.4 00:50-1.5 4.5 10.4 14.9 13.4 20.9 34.3 43.3 01:20-2.4 4.8 11.9 14.3 14.3 21.4 40.5 52.4 01:50 - - 1.6 11.1 14.3 14.3 23.8 44.4 49.2 02:20 - - - 7.0 16.3 11.6 25.6 48.8 60.5 02:50 - - 1.3 7.9 15.8 13.2 26.3 39.5 44.7 03:20-2.0 2.0 3.9 13.7 7.8 21.6 35.3 52.9 03:50 - - - 4.9 14.8 12.3 24.7 45.7 50.6 04:20-1.9 3.7 5.6 14.8 9.3 24.1 42.6 48.1 04:50 - - 1.2 12.0 22.9 16.9 31.3 57.8 62.7 05:20 - - 4.0 14.0 18.0 14.0 28.0 58.0 64.0 05:50 - - - 15.6 18.8 15.6 35.9 67.2 81.3 06:20 - - - 6.3 12.5 6.3 18.8 56.3 68.8 06:50 - - 1.6 11.1 15.9 11.1 28.6 71.4 84.1 07:20 - - - 2.3 7.0 2.3 16.3 51.2 72.1 07:50 - - - 1.6 3.2 1.6 11.3 50.0 67.7 08:20 - - - 2.2 2.2 2.2 11.1 44.4 57.8 08:50 - - - - 1.8-7.0 38.6 50.9 09:20 - - - - - - 5.1 33.3 41.0 09:50 - - - - - - 1.8 27.3 36.4 10:20 - - - - - - 2.9 26.5 44.1 10:50 - - - - - - - 12.5 29.2 11:20 - - - - - - - 7.1 21.4 11:50 - - - - - - 2.0 7.8 21.6 12:20 - - - - - - 5.7 11.4 20.0 12:50 - - - - - - 5.1 15.4 17.9 13:20 - - - - - - - 11.1 18.5 13:50 - - - - - - - 10.5 13.2 14:20 - - - - - - 3.3 16.7 20.0 14:50 - - - - - - - 17.6 20.6 15:20 - - - - - - 3.8 11.5 15.4 15:50 - - - - - - 2.0 12.0 18.0 33

TIME (UTC) RVR <50 <200 <350 <550 <1500 <800 <1500 <3000 <5000 <30 (100) <60 (200) <90 (300) <60 (200) <150 (500) VIS <300 (1000) <460 (1500) 16:20 - - - - 3.6-3.6 10.7 14.3 16:50 - - - - - - 2.0 15.7 15.7 17:20 - - - 2.9 2.9 2.9 2.9 14.3 17.1 17:50 - - - - - 4.2 6.3 12.5 20.8 18:20 - - - - - - - 8.8 23.5 18:50 - - - - 3.8-5.7 13.2 18.9 19:20 - - - - 3.0-3.0 21.2 48.5 19:50 - - - - 6.0 2.0 8.0 24.0 30.0 20:20 - - - 2.6 2.6 2.6 2.6 21.1 36.8 20:50 - - 2.2 4.4 8.9 4.4 11.1 26.7 33.3 21:20 - - - - 3.3 3.3 3.3 16.7 33.3 21:50 - - - 1.8 7.3 3.6 12.7 27.3 41.8 22:20 - - - - 2.9-5.9 17.6 32.4 22:50 - - - 3.5 7.0 7.0 14.0 29.8 40.4 23:20 - - - 2.4 7.3 2.4 19.5 34.1 41.5 23:50 - - - 6.3 14.1 10.9 23.4 35.9 40.6 Mean - 0.2 0.6 3.4 6.4 4.6 11.5 29.4 39.3 8000 m nähtavuskauguse ja 2000 jala kõrguse pilve alumise piiri asemel on kasutatud vastavalt väärtusi 5000 m ja 1500 jalga, mis on kohalike lennuprotseduuride ja erakorraliste ilmateadete aluseks. Raja nähtavuskauguse esinemissagedus alla 200 m on septembris 0,2%. Alla 1500 m horisontaalse nähtavuse ja/või alla 500 jala pilve alumise piiri kõrguse esinemissagedus on 11,5%. Instead of general visibility 8000 m and cloud base 2000 ft, visibility 5000 m and cloud base 1500 ft were used, since these are the limit values in local flight procedures and special weather reports. In September, the observed occurrence of the Runway Visual Range minium values below 200 m is 0.2%. The occurrence frequency of horizontal visibility below 1500 m and/or cloud ceiling below 500 ft in September is 11.5%. 34

35

AERODROME: EETU MONTH: OCTOBER PERIOD OF RECORD: 2014-2020 TOTAL NUMBER OF OBSERVATIONS: 3758 OBSERVATION INTERVAL: 30 MIN TIME (UTC) RVR <50 <200 <350 <550 <1500 <800 <1500 <3000 <5000 <30 (100) <60 (200) <90 (300) <60 (200) <150 (500) VIS <300 (1000) <460 (1500) 00:20-1.7 5.0 8.3 8.3 8.3 16.7 45.0 63.3 00:50-1.0 1.0 3.0 6.1 4.0 16.2 40.4 51.5 01:20 - - 3.1 4.7 7.8 4.7 18.8 39.1 57.8 01:50-1.0 2.0 5.9 10.8 7.8 17.6 39.2 55.9 02:20-1.4 2.7 8.2 12.3 8.2 21.9 46.6 65.8 02:50 - - 0.9 8.5 14.2 13.2 21.7 44.3 59.4 03:20 - - - 8.5 14.1 14.1 25.4 50.7 64.8 03:50 - - - 10.8 15.3 14.4 21.6 47.7 56.8 04:20 - - 2.5 1-17.5 15.0 23.8 48.8 60.0 04:50 - - - 11.1 17.1 12.0 22.2 46.2 59.8 05:20 - - 1.3 9.3 20.0 10.7 25.3 54.7 69.3 05:50 - - 1.8 7.2 14.4 8.1 22.5 47.7 62.2 06:20 - - - 8.1 16.2 10.8 27.0 48.6 64.9 06:50 - - 1.0 8.3 16.7 9.4 25.0 52.1 66.7 07:20-2.7 2.7 9.5 16.2 9.5 27.0 54.1 68.9 07:50 - - 1.0 5.1 9.2 4.1 17.3 50.0 62.2 08:20 - - - 1.6 8.1 1.6 19.4 56.5 71.0 08:50 - - - 2.2 6.7 2.2 15.7 51.7 69.7 09:20 - - 1.5 1.5 4.4 1.5 11.8 52.9 69.1 09:50 - - - 1.0 3.9 1.0 7.8 40.8 53.4 10:20 - - - 1.5 4.5-10.4 41.8 61.2 10:50 - - - - 4.5-7.9 32.6 47.2 11:20 - - - - 3.5-10.5 43.9 64.9 11:50 - - - 1.1 2.2-7.8 37.8 47.8 12:20 - - 1.6 1.6 1.6-8.2 39.3 55.7 12:50 - - - 1.2 2.5 1.2 8.6 37.0 50.6 13:20 - - - - - - 3.3 39.3 52.5 13:50 - - - 1.1 2.2 1.1 5.5 31.9 42.9 14:20 - - - - - - 3.3 41.0 50.8 14:50 - - - 1.2 3.6 1.2 6.0 27.7 45.8 15:20 - - - - - - 4.1 31.5 42.5 15:50 - - - 2.4 2.4 2.4 8.4 30.1 43.4 36

TIME (UTC) RVR <50 <200 <350 <550 <1500 <800 <1500 <3000 <5000 <30 (100) <60 (200) <90 (300) <60 (200) <150 (500) VIS <300 (1000) <460 (1500) 16:20 - - - - 1.8-9.1 30.9 43.6 16:50 - - - 1.2 6.1 2.4 9.8 26.8 39.0 17:20 - - - - 5.1-10.2 30.5 35.6 17:50 - - - 2.5 7.6 2.5 11.4 30.4 40.5 18:20 - - - - 5.6-13.0 29.6 37.0 18:50 - - - 1.3 11.5 1.3 15.4 28.2 43.6 19:20 - - - - 4.0-8.0 32.0 52.0 19:50 - - - 1.2 6.0 1.2 14.5 31.3 45.8 20:20 - - - - 3.8-13.5 28.8 44.2 20:50 - - - - 5.7-13.6 28.4 44.3 21:20 - - - 1.8 8.8 1.8 19.3 40.4 52.6 21:50 - - - 2.3 5.7 3.4 17.0 39.8 51.1 22:20 - - - 1.8 3.5 1.8 14.0 38.6 47.4 22:50 - - - 2.2 5.5 2.2 15.4 38.5 46.2 23:20 - - 1.7 3.3 3.3 3.3 18.3 40.0 50.0 23:50 - - - 4.2 10.5 6.3 13.7 36.8 50.5 Mean - 0.2 0.6 3.4 7.5 4.0 14.7 40.0 53.8 8000 m nähtavuskauguse ja 2000 jala kõrguse pilve alumise piiri asemel on kasutatud vastavalt väärtusi 5000 m ja 1500 jalga, mis on kohalike lennuprotseduuride ja erakorraliste ilmateadete aluseks. Raja nähtavuskauguse esinemissagedus alla 200 m on oktoobris 0,2%. Alla 1500 m horisontaalse nähtavuse ja/või alla 500 jala pilve alumise piiri kõrguse esinemissagedus on 14,7%. Instead of general visibility 8000 m and cloud base 2000 ft, visibility 5000 m and cloud base 1500 ft were used, since these are the limit values in local flight procedures and special weather reports. In October, the observed occurrence of the Runway Visual Range minium values below 200 m is 0.2%. The occurrence frequency of horizontal visibility below 1500 m and/or cloud ceiling below 500 ft in October is 14.7%. 37

38

AERODROME: EETU MONTH: NOVEMBER PERIOD OF RECORD: 2014-2020 TOTAL NUMBER OF OBSERVATIONS: 5168 OBSERVATION INTERVAL: 30 MIN TIME (UTC) RVR <50 <200 <350 <550 <1500 <800 <1500 <3000 <5000 <30 (100) <60 (200) <90 (300) <60 (200) <150 (500) VIS <300 (1000) <460 (1500) 00:20 - - - 7.6 13.0 7.6 20.7 57.6 72.8 00:50 - - - 4.7 13.2 5.4 24.8 62.0 74.4 01:20 - - - 8.0 17.2 8.0 25.3 62.1 77.0 01:50 - - - 8.1 14.1 8.9 23.7 63.7 73.3 02:20 - - 1.1 9.5 14.7 9.5 24.2 61.1 74.7 02:50 - - 0.8 7.6 13.0 8.4 25.2 63.4 73.3 03:20 - - 1.1 7.4 13.7 7.4 25.3 61.1 73.7 03:50 - - 0.7 8.1 15.6 8.1 24.4 64.4 74.8 04:20 - - 1.1 6.4 12.8 6.4 22.3 59.6 70.2 04:50 - - 0.7 9.6 15.6 10.4 23.0 65.2 71.9 05:20 - - - 6.8 11.4 6.8 21.6 64.8 70.5 05:50 - - 0.8 8.3 12.8 9.8 24.8 66.9 73.7 06:20 - - - 4.3 9.6 5.3 17.0 59.6 74.5 06:50 - - - 7.5 13.5 9.0 22.6 65.4 78.9 07:20 - - 1.2 4.8 10.8 4.8 15.7 61.4 72.3 07:50 - - - 8.9 13.7 9.7 20.2 68.5 75.8 08:20 - - 1.1 6.9 8.0 6.9 18.4 60.9 70.1 08:50 - - 1.5 4.5 12.1 5.3 22.7 67.4 78.8 09:20 - - - 2.2 5.6 3.4 14.6 62.9 78.7 09:50 - - - 3.1 8.5 3.8 16.2 66.9 81.5 10:20 - - 1.2 1.2 4.8 1.2 9.6 62.7 79.5 10:50 - - - 3.2 4.8 3.2 16.0 67.2 80.8 11:20 - - - 1.2 3.6 1.2 15.5 59.5 75.0 11:50 - - - 2.5 4.2 2.5 16.0 61.3 79.8 12:20 - - 1.3 1.3 2.6 1.3 14.5 55.3 75.0 12:50 - - - 2.5 3.3 2.5 17.4 56.2 72.7 13:20 - - - 2.5 2.5 2.5 12.7 53.2 70.9 13:50 - - - 2.6 4.3 2.6 17.1 56.4 70.9 14:20 - - - 2.7 4.0 2.7 21.3 61.3 73.3 14:50 - - 0.8 3.3 7.5 4.2 19.2 57.5 75.0 15:20 - - 1.2 3.7 6.1 3.7 15.9 52.4 68.3 15:50 - - - 5.1 7.6 5.1 19.5 58.5 72.0 39

TIME (UTC) RVR <50 <200 <350 <550 <1500 <800 <1500 <3000 <5000 <30 (100) <60 (200) <90 (300) <60 (200) <150 (500) VIS <300 (1000) <460 (1500) 16:20 - - 1.2 4.7 8.1 4.7 18.6 52.3 69.8 16:50 - - - 4.9 9.8 5.7 21.1 58.5 71.5 17:20-1.1 1.1 4.6 9.2 4.6 14.9 56.3 69.0 17:50 - - - 4.5 9.8 5.3 17.3 53.4 66.9 18:20 - - - 3.4 8.0 3.4 16.1 54.0 67.8 18:50 - - - 2.3 8.3 3.0 19.7 47.7 65.9 19:20 - - - 2.4 9.6 2.4 15.7 51.8 65.1 19:50 - - - 5.2 9.7 6.0 19.4 52.2 64.9 20:20-1.2 1.2 3.6 9.5 3.6 16.7 52.4 69.0 20:50 - - 0.8 5.6 13.7 6.5 21.0 52.4 67.7 21:20-1.1 1.1 3.4 12.5 4.5 22.7 50.0 64.8 21:50 - - - 7.5 13.5 9.0 21.8 54.1 69.9 22:20 - - - 4.4 9.9 4.4 17.6 53.8 72.5 22:50-0.8 1.6 5.4 11.6 6.2 25.6 55.0 75.2 23:20 - - 1.1 4.3 8.6 6.5 23.7 51.6 66.7 23:50 - - - 1.4 12.8 2.1 23.4 57.4 68.8 Mean - 0.1 0.5 4.9 9.8 5.3 19.6 58.7 72.5 8000 m nähtavuskauguse ja 2000 jala kõrguse pilve alumise piiri asemel on kasutatud vastavalt väärtusi 5000 m ja 1500 jalga, mis on kohalike lennuprotseduuride ja erakorraliste ilmateadete aluseks. Raja nähtavuskauguse esinemissagedus alla 200 m on novembris 0,1%. Alla 1500 m horisontaalse nähtavuse ja/või alla 500 jala pilve alumise piiri kõrguse esinemissagedus on 19,6%. Instead of general visibility 8000 m and cloud base 2000 ft, visibility 5000 m and cloud base 1500 ft were used, since these are the limit values in local flight procedures and special weather reports. In November, the observed occurrence of the Runway Visual Range minium values below 200 m is 0.1%. The occurrence frequency of horizontal visibility below 1500 m and/or cloud ceiling below 500 ft in November is 19.6%. 40

41

AERODROME: EETU MONTH: DECEMBER PERIOD OF RECORD: 2014-2020 TOTAL NUMBER OF OBSERVATIONS: 5009 OBSERVATION INTERVAL: 30 MIN TIME (UTC) RVR <50 <200 <350 <550 <1500 <800 <1500 <3000 <5000 <30 (100) <60 (200) <90 (300) <60 (200) <150 (500) VIS <300 (1000) <460 (1500) 00:20 - - 1.2 4.7 12.9 5.9 27.1 58.8 75.3 00:50 - - 1.6 3.1 9.4 3.9 18.8 48.4 70.3 01:20 - - - 4.8 11.9 7.1 23.8 61.9 75.0 01:50 - - 0.8 3.2 8.9 4.0 18.5 56.5 75.0 02:20 - - - 3.3 6.5 4.3 19.6 60.9 76.1 02:50 - - 0.8 3.2 8.7 3.2 23.0 63.5 80.2 03:20 - - - 3.6 10.7 3.6 25.0 71.4 85.7 03:50 - - 0.9 3.5 13.2 5.3 26.3 68.4 77.2 04:20 - - - 5.8 10.5 8.1 26.7 76.7 86.0 04:50-0.8 0.8 3.2 9.6 3.2 20.8 64.8 78.4 05:20 - - 1.2 3.5 10.6 4.7 21.2 70.6 87.1 05:50-0.8 0.8 3.9 9.4 3.9 18.8 63.3 78.9 06:20 - - - 1.1 7.4 1.1 14.9 68.1 83.0 06:50 - - - 3.7 7.4 4.4 17.0 61.5 77.8 07:20-2.3 2.3 2.3 10.5 2.3 18.6 66.3 80.2 07:50 - - - 0.8 8.9 2.4 20.2 67.7 80.6 08:20 - - - 2.2 9.9 2.2 22.0 70.3 82.4 08:50 - - 0.8 0.8 10.7 1.7 24.8 65.3 83.5 09:20 - - 1.3 3.8 6.3 1.3 25.0 70.0 87.5 09:50-0.8 0.8 1.6 8.1 1.6 21.1 62.6 78.9 10:20 - - 1.2 2.4 7.2 2.4 22.9 68.7 88.0 10:50 - - - - 6.8-23.9 65.0 87.2 11:20 - - - - 8.8 1.3 23.8 71.3 87.5 11:50 - - - 0.9 10.5 0.9 24.6 66.7 85.1 12:20 - - - 1.2 7.2 1.2 19.3 67.5 83.1 12:50 - - - - 6.0-22.4 64.7 75.0 13:20 - - - 2.5 7.4 2.5 24.7 71.6 82.7 13:50-0.8 0.8 3.3 5.0 4.2 21.7 65.0 75.8 14:20 - - 1.2 3.5 7.1 4.7 23.5 67.1 78.8 14:50-0.7 0.7 2.2 4.5 2.2 19.4 54.5 68.7 15:20-1.1 2.3 3.4 4.6 3.4 17.2 58.6 75.9 15:50 - - 0.8 2.4 4.8 4.0 19.8 61.1 75.4 42

TIME (UTC) RVR <50 <200 <350 <550 <1500 <800 <1500 <3000 <5000 <30 (100) <60 (200) <90 (300) <60 (200) <150 (500) VIS <300 (1000) <460 (1500) 16:20 - - 2.2 3.3 6.7 4.4 23.3 66.7 84.4 16:50 - - - 1.7 6.0 2.6 22.2 53.0 75.2 17:20 - - - 1.2 7.4 1.2 27.2 58.0 72.8 17:50 - - - 1.7 6.6 1.7 19.0 54.5 72.7 18:20 - - - 6.0 13.3 6.0 26.5 56.6 77.1 18:50 - - 0.8 3.3 9.8 3.3 20.5 55.7 77.0 19:20 - - - 3.2 12.8 4.3 25.5 61.7 81.9 19:50 - - 0.9 3.5 10.5 4.4 19.3 58.8 71.9 20:20 - - - 2.4 10.7 2.4 25.0 66.7 79.8 20:50 - - - 2.4 8.8 3.2 21.6 60.0 74.4 21:20 - - - 1.2 8.4 2.4 25.3 66.3 79.5 21:50 - - - 0.8 6.6 4.1 19.8 57.9 76.0 22:20 - - - 2.2 8.9 4.4 23.3 64.4 75.6 22:50 - - - 2.4 8.8 3.2 21.6 60.8 76.0 23:20 - - - 2.3 9.1 4.5 22.7 63.6 78.4 23:50 - - - 3.1 9.2 5.4 18.5 55.4 74.6 Mean - 0.2 0.5 2.6 8.6 3.3 22.0 63.3 79.0 8000 m nähtavuskauguse ja 2000 jala kõrguse pilve alumise piiri asemel on kasutatud vastavalt väärtusi 5000 m ja 1500 jalga, mis on kohalike lennuprotseduuride ja erakorraliste ilmateadete aluseks. Raja nähtavuskauguse esinemissagedus alla 200 m on detsembris 0,2%. Alla 1500 m horisontaalse nähtavuse ja/või alla 500 jala pilve alumise piiri kõrguse esinemissagedus on 22%. Instead of general visibility 8000 m and cloud base 2000 ft, visibility 5000 m and cloud base 1500 ft were used, since these are the limit values in local flight procedures and special weather reports. In December, the observed occurrence of the Runway Visual Range minium values below 200 m is 0.2%. The occurrence frequency of horizontal visibility below 1500 m and/or cloud ceiling below 500 ft in November is 22%. 43

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AERODROME CLIMATOLOGICAL SUMMARY: WIND SPEED AND DIRECTION AERODROME: EETU MONTH: JANUARY PERIOD OF RECORD: 2014-2020 TOTAL NUMBER OF OBSERVATIONS: 7510 OBSERVATION INTERVAL: 30 MIN Frequencies (%) of occurence of concurrent wind direction (in 30 sectors) and speed within specified ranges Wind speed (kt) 1-5 6-10 11-15 16-20 21-25 26-30 31-35 36-40 41-45 46-50 >50 Total Calm 2.06 35-36-01 0.87 0.56 0.80 0.10 - - - - - - - 2.33 02-03-04 0.60 1.30 0.42 0.04 - - - - - - - 2.36 05-06-07 1.09 1.10 0.14 0.08 - - - - - - - 2.41 08-09-10 2.14 2.91 0.55 0.04 - - - - - - - 5.63 11-12-13 2.66 4.02 1.55 0.25 - - - - - - - 8.48 14-15-16 2.44 3.31 1.06 0.23 0.01 - - - - - - 7.06 17-18-19 1.92 3.40 1.51 1.10 0.03 - - - - - - 7.97 20-21-22 2.45 7.23 5.99 2.03 0.01 - - - - - - 17.72 23-24-25 2.54 7.76 10.05 3.15 0.45 0.01 - - - - - 23.96 26-27-28 2.14 5.59 3.67 1.40 0.26 0.01 - - - - - 13.08 29-30-31 1.73 1.95 0.71 0.07 0.01 - - - - - - 4.47 32-33-34 1.-8 1.02 0.35 - - - - - - - - 2.45 Total 21.67 40.15 26.81 8.50 0.78 0.03 - - - - - 100.00 EETU wind direction and wind speed distribution (%), January 2014-2020 29-30-31 26-27-28 32-33-34 35-36-01 12 10 8 6 4 2 0 02-03-04 05-06-07 08-09-10 23-24-25 11-12-13 20-21-22 14-15-16 17-18-19 1-5 6-10 11-15 16-20 21-25 26-30 31-35 36-40 41-45 46-50 >50 Jaanuaris on valdav tuule suund 230-250 kraadi (23,96%). Valdav tuule kiirus on 6-10 sõlme (40,15%). Maksimaalne tuule kiirus on 26-30 sõlme (0,03%). The prevailing wind direction in January is 230-250 degrees (23.96%). Wind speed is mainly 6-10 knots (40.15%). Maximum wind speed is 26-30 knots (0.03%). 45

AERODROME: EETU MONTH: FEBRUARY PERIOD OF RECORD: 2014-2020 TOTAL NUMBER OF OBSERVATIONS: 6860 OBSERVATION INTERVAL: 30 MIN Frequencies (%) of occurence of concurrent wind direction (in 30 sectors) and speed within specified ranges Wind speed (kt) 1-5 6-10 11-15 16-20 21-25 26-30 31-35 36-40 41-45 46-50 >50 Total Calm 2.02 35-36-01 0.70 0.79 0.39 0.04 - - - - - - - 1.93 02-03-04 1.34 1.32 0.18 - - - - - - - - 2.84 05-06-07 2.09 2.46 0.96 - - - - - - - - 5.51 08-09-10 2.22 1.66 0.53 - - - - - - - - 4.76 11-12-13 1.73 1.69 0.69 0.03 - - - - - - - 5.69 14-15-16 2.26 4.13 1.07 0.18 - - - - - - - 8.16 17-18-19 1.41 3.57 2.75 0.94 0.07 - - - - - - 8.99 20-21-22 1.34 5.54 5.66 1.48 0.24 - - - - - - 15.01 23-24-25 1.98 7.14 7.14 2.84 0.15 - - - - - - 20.80 26-27-28 2.11 3.53 4.57 1.21 0.14 - - - - - - 12.68 29-30-31 2.16 3.37 1.69 0.13 - - - - - - - 7.77 32-33-34 1.05 1.83 0.79 0.06 - - - - - - - 3.84 Total 20.39 37.02 26.42 6.90 0.60 - - - - - - 100.00 EETU wind direction and wind speed distribution (%), February 2014-2020 29-30-31 26-27-28 32-33-34 35-36-01 8 6 4 2 0 02-03-04 05-06-07 08-09-10 23-24-25 11-12-13 20-21-22 14-15-16 17-18-19 1-5 6-10 11-15 16-20 21-25 26-30 31-35 36-40 41-45 46-50 >50 Veebruaris on valdav tuule suund 230-250 kraadi (20,80%). Valdav tuule kiirus on 6-10 sõlme (37,02%). Maksimaalne tuule kiirus on 21-25 sõlme (0,60%). The prevailing wind direction in February is 230-250 degrees (20.80%). Wind speed is mainly 6-10 knots (37.02%). Maximum wind speed is 21-25 knots (0.60%). 46

AERODROME: EETU MONTH: MARCH PERIOD OF RECORD: 2014-2020 TOTAL NUMBER OF OBSERVATIONS: 8065 OBSERVATION INTERVAL: 30 MIN Frequencies (%) of occurence of concurrent wind direction (in 30 sectors) and speed within specified ranges Wind speed (kt) 1-5 6-10 11-15 16-20 21-25 26-30 31-35 36-40 41-45 46-50 >50 Total Calm 1.89 35-36-01 1.00 1.39 0.82 - - - - - - - - 3.21 02-03-04 1.00 1.88 0.45 - - - - - - - - 3.32 05-06-07 2.17 2.85 0.45 0.33 - - - - - - - 5.80 08-09-10 2.61 3.03 1.20 0.32 - - - - - - - 7.15 11-12-13 2.17 3.56 0.73 0.22 - - - - - - - 6.68 14-15-16 2.82 3.95 1.21 0.08 - - - - - - - 8.06 17-18-19 2.29 3.23 1.33 0.27 - - - - - - - 7.12 20-21-22 2.20 4.56 4.00 0.59 - - - - - - - 11.35 23-24-25 2.45 5.86 8.27 2.86 0.43 - - - - - - 19.88 26-27-28 2.79 5.85 3.14 1.46 0.28 - - - - - - 13.52 29-30-31 2.12 3.73 1.21 0.22 - - - - - - - 7.28 32-33-34 1.26 2.24 1.15 0.09 - - - - - - - 4.74 Total 24.88 42.14 23.96 6.43 0.72 - - - - - - 100.00 EETU wind direction and wind speed distribution (%), March 2014-2020 29-30-31 26-27-28 32-33-34 35-36-01 10 8 6 4 2 0 02-03-04 05-06-07 08-09-10 23-24-25 11-12-13 20-21-22 14-15-16 17-18-19 1-5 6-10 11-15 16-20 21-25 26-30 31-35 36-40 41-45 46-50 >50 Märtsis on valdav tuule suund 230-250 kraadi (19,88%). Valdav tuule kiirus on 6-10 sõlme (42,14%). Maksimaalne tuule kiirus on 21-25 sõlme (0,72%). The prevailing wind direction in March is 230-250 degrees (19.88%). Wind speed is mainly 6-10 knots (42.14%). Maximum wind speed is 21-25 knots (0.72%). 47

AERODROME: EETU MONTH: APRIL PERIOD OF RECORD: 2014-2020 TOTAL NUMBER OF OBSERVATIONS: 8112 OBSERVATION INTERVAL: 30 MIN Frequencies (%) of occurence of concurrent wind direction (in 30 sectors) and speed within specified ranges Wind speed (kt) 1-5 6-10 11-15 16-20 21-25 26-30 31-35 36-40 41-45 46-50 >50 Total Calm 2.58 35-36-01 1.58 2.09 0.57 0.04 - - - - - - - 4.28 02-03-04 1.79 3.60 0.76 - - - - - - - - 6.15 05-06-07 2.64 3.68 1.01 0.14 - - - - - - - 7.47 08-09-10 2.79 2.38 0.76 0.08 - - - - - - - 6.00 11-12-13 3.04 2.23 0.57 - - - - - - - - 5.85 14-15-16 2.61 2.98 0.54 0.01 - - - - - - - 6.13 17-18-19 1.04 1.59 0.42 0.01 - - - - - - - 3.07 20-21-22 1.01 4.58 2.61 0.65 0.20 - - - - - - 9.05 23-24-25 2.06 7.66 5.04 1.45 0.33 0.07 0.01 - - - - 16.62 26-27-28 3.25 6.51 5.31 1.40 0.38 0.01 - - - - - 16.86 29-30-31 2.27 5.14 2.77 0.34 0.03 - - - - - - 10.55 32-33-34 1.53 3.07 0.77 0.03 - - - - - - - 5.39 Total 25.61 45.52 21.12 4.15 0.93-0.01 - - - - 100.00 EETU wind direction and wind speed distribution (%), April 2014-2020 29-30-31 26-27-28 32-33-34 35-36-01 8 6 4 2 0 02-03-04 05-06-07 08-09-10 23-24-25 11-12-13 20-21-22 14-15-16 17-18-19 1-5 6-10 11-15 16-20 21-25 26-30 31-35 36-40 41-45 46-50 >50 Aprillis on valdav tuule suund 260-280 kraadi (16,86%). Valdav tuule kiirus on 6-10 sõlme (45,52%). Maksimaalne tuule kiirus on 31-35 sõlme (0,01%). The prevailing wind direction in April is 260-280 degrees (16.86%). Wind speed is mainly 6-10 knots (45.52%). Maximum wind speed is 31-35 knots (0.01%). 48