February 14, 2017

Heavy rains in the first part of February 2017 raised water levels in California's Oroville Reservoir past capacity, and erosion of the spillways led to evacuations for communities below the dam.

January 30, 2017

Tremendous rain and snow batter California during the month of January.

January 11, 2017

Lake effect snows like the events that buried parts of Michigan and New York in mid-December might actually become more common as the U.S. climate warms, at least for a while. This post explains the paradox.

December 29, 2016

As cold air filtered into the United States over the Great Lakes, the lake effect snow machine turned on burying nearby locations.

September 16, 2016

The Northwest Passage across the Canadian Arctic opened once again in 2016 as sea ice reached its second lowest extent on record.

2016 Arctic sea ice minimum extent overlain on globe
September 15, 2016

In September 2016, Arctic sea ice tied with 2007 for the second-lowest minimum extent in the satellite record, underscoring an ongoing trend of sea ice decline.

April 28, 2016

Every summer, Greenland's ice sheet melts when temperatures warm up. This year, however, saw the start of the ice melt season begin in April, much earlier than normal. 

March 11, 2016

For the third winter in a row, temperatures were well above normal for much of Alaska, leaving Alaskans to wonder, where's winter?

February 24, 2015

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.

February 26, 2014

Persistent cold temperatures in the Midwest this winter almost completely frozen over many of the Great Lakes. The Great Lakes Environmental Research Laboratory (GLERL) reported that 88 percent of the Great Lakes were frozen as of mid-February.

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