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PM Update: Drying out tonight, clouds increase Wed.; parched Sierra Nevada

Clouds: Latest mid-Atlantic infrared satellite shows movement of clouds over past two hours. Refresh page to update. See more maps on our Weather Wall.

We’re in a fast-moving weather pattern. As quickly as clouds diminish tonight, they increase again tomorrow ahead of the next weather system. But, overall, the balance of Wednesday – unlike today – should be dry. Temperatures – slightly warmer than normal – are nothing to complain about.

Through Tonight: Partial clearing this evening, with partly cloudy to mostly clear skies for most of the night. Lows range from near 30 in the colder suburbs to the mid-30s downtown.

Tomorrow (Wednesday): I’d expect some sunshine in the morning, but clouds increase in the afternoon. The air mass following today’s weather system isn’t exactly polar. So we should manage enough sun to boost temperatures to 45-50 degrees. There’s a slight (20 percent) chance of light precipitation moving in by sunset, but – with temperatures that warm – it should take the form of sprinkles or light rain showers (except out towards the mountains).

There’s a slight (30-40 percent) chance of rain and/or snow (best snow chances in colder western suburbs) Wednesday night. For more information, see this post: In DC’s future: Up to 3 completely underwhelming snow events

See Matt Rogers’ forecast through the holiday weekend. And if you haven’t already, join us on Facebook and follow us on Twitter . For related traffic news, check out Dr. Gridlock.

Today’s rainfall totals: Amounts averaged around 0.25″. Reagan National picked up 0.35″, Dulles 0.17″, and BWI 0.28″

Excessively dry Sierra Nevada: California had its driest year on record in 2013, and 2014 has produced little precipitation. The Sierra Nevada mountain range, which often receives copious snowfall in the winter months, is close to barren. NOAA’s Environmental Visualization Laboratory created this side by side image of snow cover as seen via the Suomi NPP satellite on January 13, 2013 versus January 13, 2014:


Nice sunset today in D.C.: Skies were clearing just in time for today’s sunset around the region.  Here are a couple pics:

Jason is currently the Washington Post’s weather editor. A native Washingtonian, Jason has been a weather enthusiast since age 10.
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Jason Samenow · January 14, 2014

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