MAIN WEATHER AND CLIMATE TRAITS IN THE NORTHERN HEMISPHERE AS OF OCTOBER 2024
Air Temperature
In the first decade of October, the air temperature in most of the Russian Federation was approximately normal, with the exception of the central and southern regions of the ETR where the weather was warmer than usual by 2-4 or more degrees, and new daily temperature maxima were even recorded in some locations. But at the same time, new temperature minima were set in the south of Western Siberia and of the Krasnoyarsk Territory.
In the second decade, abnormal colds occupied almost the entire country, the weather in the south of Siberia became extremely cold, new temperature minima were recorded in the Novosibirsk Region and the Altai Territory, and the areas with the weather warmer than usual reduced to the Russian North and Kolyma where the decade-averaged temperatures were 2-3 or more degrees above normal. New temperature maxima were measured in the Arkhangelsk Region and the Republic of Karelia.
In the third decade, a significant part of Russia was invaded by the air which was abnormally warm that time, and the cold weather only prevailed in Taimyr and Evenkiya, in the central regions of the Khabarovsk Territory and partly in the North Caucasus. The northern and central regions of the ETR, the Urals, and the north and south of the Far East were now dominated by the warmth. The decade-averaged temperature anomalies reached 2-4 or more degrees, and new positive extremes of air temperature were repeatedly recorded in the Russian North, in central Russia, Western Siberia, Kamchatka and the Kuril Islands as well as on the Arctic Islands beyond the Arctic Circle.
MAIN WEATHER AND CLIMATE TRAITS IN THE NORTHERN HEMISPHERE AS OF SEPTEMBER 2024
Air Temperature
No such warm September as the one this year has been ever seen in the ETR before. New daily maxima of air temperature were recorded from the first to the last day of the month, especially in the North-West, Central and Volga federal districts. The air temperature anomalies were +2…6 or more degrees in the first decade, +2…8° or more in the second one, and +2…5° in the third. But at the beginning of the last decade, abnormally cold air broke through, resulting in frosts from -2 to -6° and setting new daily temperature minima in certain locations.
The monthly-averaged air temperature in the Urals and further eastwards was either close to or less than normal. In the third decade, negative temperatures became common, and new minima were set in Trans-Baikal. But at the same time, the weather in Yakutia was noticeably warmer than usual.
As a result, the monthly averages from the western border of Russia to the Urals or even to the Far East in the north were much higher than normal in September, by 2-5 or more degrees in the ETR.