2011 |Estonian Environment Agency Weather Services

Weather events

Estonian weather events in 2011
Period	Region	Strong anomalies	Observed values and their effects
January	Estonia	heavy glaze	Many road accidents caused by freezing rain
January	Estonia	records of snow depth	Pärnu 63 cm (previous record 49 cm)
February	Estonia	very cold	Monthly mean temperature anomaly −3 ….−5 ºC
February	Estonia	records of snow depth	Narva-Jõesuu 65 cm (previous record 57 cm), damages on roofs, disrupted traffic on road and rail
February 18	Jõhvi	very cold	Absolute minimum temperature −33,4 ºC
February and March	Jõhvi	exceptionally high snow depth	Snow depth 82 cm (previous record 78 cm)
March	Estonia	strong anomalies in UV radiation and low level of ozone.	UV-Index values 5,1 and level of ozone 287 DU
April	Estonia	floods	Melting snow caused local floods in many districts of Estonia
July	Estonia	very warm	Monthly mean temperature anomaly 3,8 ºC
July 3th decade	Estonia	high precipitation totals	Tallinn (103 mm or 395% of normal), Väike-Maarja (130 mm or 432% of normal) and Kunda (105 mm or 403% of normal)
July 28	Estonia	thunderstorms	Many fires
August	Sõrve	high precipitation totals	69 mm of rain (365% of normal monthly precipitation) during the first ten days
August	Ristna	high precipitation totals	71 mm of rain during the second decade (361% of monthly normal)
September	Tartu	very warm	Monthly mean temperature 12,9 ºC is ranked as the 10 warmest September in 145-year time series
October	Tartu	very warm	Monthly mean temperature 7,4 ºC is ranked as the 20 warmest October in the 145-year time series
November	Estonia	very warm	Monthly mean temperature 5,0 ºC (anomaly 3,6ºC)
November	Tartu	very warm	Monthly mean temperature 3,8 ºC is ranked as 3-6 warmest November in the 145-year time series
November 28	Estonia	strong storm	Many damages of houses and forests caused by wind gusts up to 29 m/s
December	Estonia	very warm	Monthly mean temperature 2,5 ºC (normal −2,8ºC) the second warmest December since 1961
December	Estonia	high precipitation totals	203% of normal − the highest total since 1961
December 26-28	Estonia	strong storm	Many damages of houses and forests caused by wind gusts up to 31 m/s

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Estonian weather events in 2011

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