Climate Research   

This study takes a look at how climate projections show weakened zonal flow across the Northwest under enhanced greenhouse forcing, which could be connected with a decline in mountain precipitation.


This Week in Climate News

Let It Snow, Let It Snow, Let It Snow: U.S. Sets Benchmark

Fingerprints of Arctic Warming Seen Throughout Region

Is this West's Dry Spell Really a Megadrought?

Sea-Level and Risk of Flooding Rising Rapidly in Mid-Atlantic


From NASA

This video of the sun shows the wide range of wavelengths - invisible to the naked eye - that NASA's Solar Dynamics Observatory telescope can view.


From NOAA

"The global November numbers are in. November 2013 is now the warmest November on record, globally." Click here to read more.

Our Coverage:
Toasty November Vaults 2013 Into Top 5 Warmest Years


Tweetable Fact

See how winter precip trends have been changing in the http://bit.ly/



Climate Matters is on Facebook



The Archives

Click here to see past issues for each participating market.



For More Information

Contact Us: climatematters@climatecentral.org

Story Highlights

  • Since 1970, the biggest changes in winter precipitation trends have been across the Southeast and Northwest - both of which experienced a decrease.

  • The Southeast saw a decrease of .182" of winter precipitation per decade. The Northwest saw a decrease of .136" per decade.

  • The largest regional increases are across the West at .081" per decade and the Ohio Valley at .067" per decade.

Click below for a high-res version
WITH a title - WITHOUT a title

The Winter Solstice is this Saturday, marking a headlong plunge into winter. Two weeks ago, we shared winter temperature trends for the U.S. and your region. This week, we’re diving into another part of the climate equation - winter precipitation trends.

While every region of the country has seen a rise in winter temperatures since 1970, precipitation trends paint a more varied picture. Some regions have seen an increase in winter precipitation, while others have seen a decrease.

The biggest changes in winter precipitation trends since 1970 come from opposite corners of the country - the Southeast and the Northwest. The Southeast is down .182" per decade, with Georgia and South Carolina showing the starkest drying trend. The Northwest is down .136" per decade, with the largest decreases along the immediate coast and the crest of the Cascade Mountains. Lighter snowpack in the Cascades is bad news for skiers, as well as the region’s hydropower generators, which account for 40 percent of the nation’s hydropower generation.

The Northeast and the Northern Rockies round out the list of regions experiencing a decrease in winter precipitation, though the trends there are minimal compared to other areas.

Meanwhile, a large chunk of land from California to Ohio has seen an uptick in winter precipitation since 1970. The largest regional increases are across the West at .081" per decade and the Ohio Valley at .067" per decade. Within those areas, northern California has had the biggest local increase, though Californians might have a hard time believing it this year as 2013 is on target to be one of the state’s driest years on record.

Though the Southwest is getting drier annually, it bucks that trend in the winter. Since 1970, the Southwest has experienced a rise in winter precipitation at .037" per decade. The Upper Midwest (+.03") and South (+.05") are also trending upward with winter precipitation.

This year's meteorological winter is already off to a big start for precipitation, and mostly in the form of snow. As of December 15, 53 percent of the country had snow on the ground. That’s the largest snowpack for the U.S. in a decade.



Click below for a high-res version
WITH a title - WITHOUT a title




View this email in your browser | Unsubscribe from this list