Siberian High

The Siberian High (also Siberian Anticyclone) is a massive collection of cold dry air that accumulates on the northeastern part of Eurasian terrain from September till April. It is usually it is centered on Lake Baikal. It reaches its greatest size and strength in the winter, when the air temperature near the center of the high-pressure cell is often lower than −40 °C (−40 °F). The atmospheric pressure is often above 1,040 millibars (31 inHg). The Siberian High is the strongest semi-permanent high in the northern hemisphere and is responsible for both the lowest temperature in the Northern Hemisphere, of −67.8 °C (−90.0 °F) on 15 January 1885 at Verkhoyansk, and the highest pressure, 1083.8 mbar (108.38 kPa, 32.01 inHg) at Agata, Krasnoyarsk Krai on 31 December 1968, ever recorded. The Siberian High is responsible both for severe winter cold and attendant dry conditions with little snow and few or no glaciers across Siberia, Mongolia and China. During the summer, the Siberian High is largely replaced by the Asiatic low.