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Weather events

Estonian weather events in 2013 (normal for period 1961-1990)

Period Region Strong anomalies Observed values and their effects
January Estonia close to the normal Monthly mean temperature −5,1 ºC (+0,4 ºC anomaly)
February Estonia warmer than normal Monthly mean temperature −2,7 ºC (+3,0 ºC anomaly)
March Estonia the coldest month of the year 2013 Monthly mean temperature −6,3 ºC (anomaly −4,2 ºC)
March Estonia high values of sunshine duration Mean sunshine duration 243 hours ( 192% of the normal)
March Estonia low precipitation total The monthly mean precipitation total 13 mm (normal for the reference period is 30 mm), 43% of the normal – 3rd place since 1961
April, first decade Estonia very cold Mean temperature anomaly −3,0 ºC
May Võru (southern part of Estonia) very warm The monthly mean temperature 15,3 ºC, the second warmest May since 1961
May, 18 Võru very warm Maximum temperature reached 30,8 ºC
May Väike-Maarja (easten part of Estonia) very warm The monthly mean temperature 13,7 ºC, the second warmest May since 1961
May, 17 Leisi (Saaremaa Island), another in Raplamaa county a ball lightning Rare in so large area
May, 18 Sõrve heavy rainfall 109,7 mm − 343% of the month normal during 6 hours
May, 18 Hummuli (near Valga) a tornado The Enhanced Fujita scale EF1 torando. It damaged houses and trees.
May, 19 Jõhvi heavy rainfall 40,0 mm during 12 hours
May, 20 Haapsalu heavy rainfall 65,1 mm during 2 hours
May Sõrve (Saaremaa Island) high precipitation totals 137,3 mm – 429% of the monthly normal
June Estonia warmer than normal Monthly mean temperature 17,3 ºC (anomaly 2,8 °C).
July Estonia warmer than normal Monthly mean temperature 17,7 ºC (anomaly 1,3 ºC)
July Estonia low precipitation totals The monthly mean precipitation was 38 mm (52% of normal).
August,  ’09 county of Harjumaa severe thunderstorms Many fires
August, second decade Jogeva heavy rainfall 78 mm − 324% of normal
September, the first 24 days Estonia unusually warm Absolute maximum temperature 23,0 ºC
September, 25 Väike-Maarja, Tartu-Tõravere, Vilsandi snowfall (pellets, grains) Earliest data since 1961
October, 28-29 Estonia severe storms Significant damages in towns and forests, wind gusts up 33,2 m/s
November Estonia unusually warm Anomaly 3,5 ºC –2nd place since 1961
December, 2 and 13 northern part of Estonia severe storms Wind gusts up to 31,8 m/s, damages
December Estonia unusually warm Anomaly 5,3 ºC, especially the third decade (1st place since 1866)
The year 2013 Estonia high annual mean temperature 6,8 ºC (normal 5,2 ºC  takes the 7th- 8th place among warmer years since 1961)