Climate
Climate

The key weather and climate features in the northern hemisphere in November 2015

Air temperature

In November, the average temperature in Russia was close to normal. However, it changes during the month were uneven. So if in the European territory on each decade the average temperature was above normal, after a large positive anomalies of the first decade in the Urals and Siberia (up to +5 ... + 7°C), in the second decade a strong cold snap occurred (anomalies to -4 ... -10°C), while in the third - here again it was warm (anomaly up to + 4 ... + 8°C), with the exception of Trans-Baikal, which still held the abnormal cold. In the Far East, the heat of the first decade gave way to the cold in second and third. Especially in the Kamchatka and Chukotka, where the average decade temperature was below the norm by 4-6°C. Strong warming took place in the European territory of Russia in the last week of the month. In the Black Earth, the Middle Volga and the Lower Volga were recorded daily maximum temperatures. In the south, in the Krasnodar and Stavropol Territories, Rostov Region the thermometer rose to summer values of +20 ... 25°C. At the same time, in Yakutia, Irkutsk Region and Trans-Baikal frosts reached -45°C, which is typical for the middle of winter, but not fall. During all month, the weather was very warm in the Russian North and the Arctic islands. As a result, the average temperature in November in the Russian sector of the Arctic exceeded the norm by 4-12°C. In the fight against heat and cold in the Southern Urals and southern Siberia and Kamchatka the cold won. Here, the average temperature for the month was less than the norm by 1-3°C.

 

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The key weather and climate features in the northern hemisphere in October 2015

Air temperature

Last October was memorable with the abnormally cold weather in the European part of Russia. A record cold was registered in Ryazan, Lipetsk, Tambov, Belgorod, Kursk, Smolensk, in the Volga region and the Stavropol Territory. During any decade, and in general for the month, the average monthly air temperature was below the norm (in the Perm region - approximately  by 2ºC). In European Russia so cool October is no longer an uncommon thing. At about the same cold it was in the previous year. Over 15 years of 21 century, 3 Octobers were among the ten coldest in the past 125 years of weather observations.

Warm weather prevailed most part of the month beyond the Urals. In the first decade in the Irkutsk, Kemerovo, Novosibirsk, Altai Territory, the Altai Mountains and the Republic of Tuva new temperature maximums were recorded. The same thing happened in the north of Yakutia and Chukotka.  In the south of Siberia, the Trans-Baikal Territory and along the Arctic coast of Russia the October temperature norm was considerably exceeded. In Chukotka, Taimyr and Arctic islands - by 4-6ºC. However, on some days severe frosts occurred in the Polar Urals and the lower reaches of the Ob River. Thermometer drops below -20ºC, in Yakutia below -30ºC.

 

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The key weather and climate features in the northern hemisphere in September 2015

Air temperature

Extremely warm weather was maintained in European Russia in the second half of September. Numerous daily maximum temperature have been recorded from Novaya Zemlya to the North Caucasus. The thermometer repeatedly rose above +30°C, which was a rare event even during the last summer in European Russia. Average air temperature in the third decade of the month exceeded the norm by 4-9°C, while on a monthly basis - by 3-5°C. Nature vividly reacted to such a warm weather. In the south, there were flowers on apple and the lilacs bloomed for the second time in a year. In Crimea, last September was the warmest in the history of meteorological observations. In the Russian north, the south of Russia and in the Volga region, it was the third warmest one. Such heat was not seen over the last 20 years; the records belong to the mid-30s of the last century. On the last day of the month freeze reached the Black Earth region. At night, there were recorded temperatures from -1°C to -3°C.

 

It was abnormally warm in the Russian sector of the Arctic. In northern Evenki and Yakutia, as well as on the Arctic islands the daily maximum temperature was exceeded and monthly mean values have surpassed the norm by 2-3°C or more.

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The key weather and climate features in the northern hemisphere in August 2015

Air temperature

 

For the largest part of the month cold weather dominated over the Russian North. From Arkhangelsk to Taimyr, every decade of the month was colder than the norm. During the last one, the cold intensified and expanded far to the south, and covered the southern regions of the European part of Russia and Volga Region. For the last time, new records of the temperature minimums were registered not only in the north, but also near with Lower Volga, the Urals and Central region. At night the thermometer fell below 0°C, in some places there were recorded the values for -2 ... -8°C. As a result of the cold - negative anomalies of mean monthly temperatures were mentioned in Arkhangelsk Oblast, Komi Republic, on the Upper Volga and the Urals.

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The key weather and climate features in the northern hemisphere in July 2015

Air temperature

In July 2015 mean air temperature in the Northern Hemisphere has reached the absolute maximum in the history of regular meteorological observations in the world since 1891. This year is the fifth month with a record high average monthly air temperature. Previous record holders - February, March, May and June.

 

It was considerably hotter than usual last month in Europe and North Africa, the Middle East, Central Asia and southern Siberia, in the north of the Russian Far East and Alaska, in the east of the Canadian Arctic and northern Pacific coast of the United States. In contrast, abnormal cold seized the central and northern regions of European Russia and the Urals, a significant part of Canada and the United States, northern and tropical waters of the Atlantic Ocean, the western part of the temperate latitudes of the Pacific Ocean and the Horn of Africa.

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The key weather and climate features in the northern hemisphere in June 2015

Air temperature

June was abnormally warm in most parts of the Russian Federation. Only on Sakhalin Island, in the north of Primorye and the south of Kamchatka, partly in Kaliningrad, Pskov, Arkhangelsk Region and the Republic of Karelia mean monthly air temperature was a little lower than normal. In the rest of the country, it has exceeded the norm. In the Urals, western Siberia and the Lower Volga - by 4-6ºC. New temperature maxima during the month were many times recorded throughout the territory. On certain days in the Republic of Kalmykia, the Astrakhan Region and the eastern areas of the Volgograd and Saratov Regions the thermometer rose to the level of +40ºC and above. Also there was frost during the month, sometimes it comes up to new daily temperature minima. Thus, in the first decade of the month frosts happened in the north of the European territory, in Bashkiria, in the south of the Krasnoyarsk Territory, the Irkutsk region and the Trans-Baikal region, in the second decade - in the central region of Russia, and in the third decade - again on Sakhalin and in Trans-Baikal. Still the warm weather in June significantly prevailed over the cold the mean month temperature received the second rank among the highest values for this indicator yielded only by June 2012; the first half of the year was the warmest in the history of regular meteorological observations in the country.

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