Meteorologist Tom Di Liberto explains how an unusual wind pattern and a late monsoon contributed to India's deadly May 2015 heatwave.

On the afternoon of May 23, Alaska set a new statewide record for the earliest day in the year with a temperature in the 90s.

The extreme atmospheric pressure pattern that favored record-breaking snow totals across parts of the U.S. East left Alaskans asking, “Where’s winter?”

 

A stalled atmospheric set-up has made Boston and surrounding areas in the Northeast the most popular truck stop for storms travelling the atmospheric highway known as the jet stream. And stop they have, like a caravan of tractor-trailers idling in a rest stop parking lot.

Warm oceans lead to record September warmth for Alaska maritime locations.

Temperature extremes have been pretty unusual across the United States so far in 2014. Looking back over this time period quickly reveals at least part of what was going on: the polar jet stream got into a serious rut.

Never in the historical record have such large areas of the country experienced such radically different temperature extremes as they have so far in 2014.

January 2014 was remarkably mild across nearly all of Alaska, resulting in this January ranking among the  “top ten” warmest on record for many Alaskan communities according to preliminary analyses.

October in Alaska this year was more like September, with warmth and rain in place of autumn chill and snow. Wind anomalies related to unusual pressure patterns conspired to bring a steady stream of warm, wet air from southerly latitudes into Alaska.

For much of Alaska, lack of snow, soaking rains, and record-warmth have made October feel more like September.

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