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Posted at 05:54 PM ET, 01/17/2012

PM Update: Windy front plows through, turning much colder

The latest in our unending series of turbulent weather swings transforms conditions from unseasonably mild to blustery, literally overnight. A brief shower is possible early this evening then we dry out. Temperatures tomorrow fall 15-20 degrees compared to today and the winds whip.

Through Tonight: There’s a 20% chance of evening showers (mainly just south of Fredericksburg) as the cold front drives through the region. Mild evening temperatures well into the 50s probably don’t take a big hit until after midnight when the cooler air starts streaming in. Lows range from 35-40. Winds are gusty from the south at 10-20 mph (gusting higher) and then shift to out of the northwest.

Wednesday: Skies are mostly sunny as cold high pressure drifts in from the northwest. Winds from that direction are sustained at 15-25 mph with some gusts over 30 mph possible. Highs are in the low 40s, but feel significantly colder.

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

Upcoming snow chances?: For snow lovers, models continue to hint at a chance of light snow or flurries for a brief time Thursday night. Any accumulation would probably be a dusting or less.

The other opportunity for wintry weather is Saturday morning. Here’s what Wes Junker emailed me:

Some of the models were previously hinting at a period of snow or mixed precipitation Saturday but now they mainly suggest that the atmosphere will warm enough for the precipitation to be rain. A few of thee earlier model runs suggested the position of the surface high to our north would favor damming to hold low level cold air over the area. Most models have backed off the damming, so it seems the best chance of a period of snow or mixed precipitation would be well west and northwest of D.C. However, as some uncertainty remains, it’s too early to give a definitive forecast for the storm.

By  |  05:54 PM ET, 01/17/2012

Categories:  Forecasts

 
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