MAIN WEATHER AND CLIMATE TRAITS IN THE NORTHEN HEMISPHERE AS OF APRIL  2024

Air temperature
 
The air in the ETR was abnormally warm from the first to last days of April. The average temperatures in each decade were 2-6° higher than normal everywhere save for the northern regions, and numerous temperature maxima were recorded all month long in many constituent entities of the Federation. The thermometer readings in the south of the ETR rose above 30° sometimes, while cold weather prevailed in the north only: in the Murmansk and Arkhangelsk Regions, as well as in the Republic of Karelia where unprecedented frosts down to -18° were observed in some places.
The weather in the Urals was cooler than usual for the most part, yet it changed to record-breaking warmth on occasional days, creating new daily temperature maxima in the Chelyabinsk, Sverdlovsk, Orenburg and Kurgan Regions as well as in the Republic of Bashkiria.
Siberia was a territory of multi-vector weather, ranging from rare colds with new air temperature minima in some cases, as in the Krasnoyarsk Territory and the Khanty-Mansi Autonomous District in the second decade, to temperature highs in other cases, as in the same places in the third decade when the average temperature exceeded its normal value by two or more degrees.

MAIN WEATHER AND CLIMATE TRAITS IN THE NORTHEN HEMISPHERE AS OF MARCH 2024

Air temperature

Bitter cold which had been freezing most of Russia at the end of February quickly began to retreat with the onset of calendar spring. The air temperatures in the north-west of the ETR, in Central Russia and in the north of Siberia reached new maxima as early as in the first days of March, and the temperature anomalies averaged for the first decade amounted to +2-6° or more in these areas. Cold weather survived only in the Black Earth and Volga regions as well as in the south of the Far East, but intrusions of cold into abnormally warm regions did also take place: on the night from March 5 to March 6, such an intrusion targeted Central Russia where the thermometer readings dropped to -20°.

In the second decade, heat continued to set in, extending the area of its anomalous highs in the north-west and in Central Russia, and creating a new heat centre in the south of Siberia and in Trans-Baikal. New daily temperature maxima were recorded again in the north-west of the ETR, in the central region and in Cis-Urals, yet cold bursts down to -20° or to -25° in the Kama River area occurred stillIn the third decade, the weather remained cold along the Arctic coast, in the north of the Urals and in Yakutia only, with negative decade-averaged temperature anomalies of -2…-6° or larger, whereas the weather in the rest of the territory was abnormally warm, with anomalies up to +2-4° or more in the ETR, in the south of the Urals and of Western Siberia, and up to +2-10° in the Far East.