Higher-than-normal Temperatures and Record-low Snowfall in Japan from December 2019 onward - Japan Meteorological Agency

Higher-than-normal Temperatures and Record-low Snowfall in Japan from December 2019 onward - Japan Meteorological Agency

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Published

10 February 2020

Since December 2019, eastern and western Japan have seen significantly above normal temperatures, and the Sea of Japan side of the country has experienced record-low snowfall. These climate extremes are attributed to weaker-than-normal southward cold air-flow to Japan’s main islands and synoptic climate conditions characterized by nonpersistence of typical winter pressure patterns around Japan. These phenomena may be attributable to a northward meandering of the subtropical jet stream over and around Japan and a persistent positive phase of the Arctic Oscillation.

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