Think 115°F is uncomfortably hot? Imagine it being incredibly humid as well. 

Pseudo-nitzschia cells under a microscope

From Alaska's Aleutian Islands to southern California, impacts since May have ranged from record-high concentrations of neurotoxins, to shellfish harvesting bans, to reports of sick and dead ocean life. 

Hot and dry are the perfect ingredients for wildfires, and the recipe was on the menu across western North America in 2015.

A stagnant weather pattern and plenty of hot air were the necessary ingredients for a record-breaking heat wave in Europe.

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.

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