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Posted at 10:30 PM ET, 01/23/2013

PM Update: Winter weather advisory tonight into Thursday AM, light accumulation possible

*Winter Weather Advisory midnight through 9 a.m.*

10:30 p.m. Update: Light snow has started in parts of the area, especially from near D.C./I-66/Rt. 50 and to the south. Let us know what you are seeing in the comments section below. And watch out for morning slick spots in areas that see some accumulation.

9:15 p.m. Update: A look at the latest information still supports our forecast from earlier today, which is for a possible dusting to approximately 1” of snow in the D.C. area tonight, mainly between 11 p.m. and 6 a.m. Best chance for amounts on the higher end is south of the District as shown in our accumulation map, with 1-2” not out of the question further south from around Stafford County and Fredericksburg east into lower Southern Maryland.

We should re-emphasize this is a weak system moving into very dry air. So for the immediate metro area it could turn out to be a hit-or-miss dusting to 1”. In other words, you should be prepared to wake up to anything from a fresh light coating of snow to as little as, well, bare ground.

From 4:20 p.m...

Coming off our coldest morning in almost four years, today’s high at or around 27 degrees in D.C. is as cold as, or colder, than we’ve seen in the last two winters. While the “deep freeze” presses on, a small clipper system is set to produce some light snow across the area tonight into early tomorrow. No big accumulation expected, but with temperatures as chilly as they are, anything that falls shouldn’t have trouble sticking.

Through Tonight: Clouds continue to thicken and lower as the clipper moves our way. Snow showers and areas of light snow should begin to move into the area in the period of late evening to around midnight, with precip chances then possibly lasting into morning. Most local spots should see between about a coating and 1”, with some heavier amounts nearing 2” possible, particularly south of the District. Lighter numbers may occur to the north. Lows reach the mid-teens to near 20.

Link: How to list your weather-related closings and delays

Tomorrow (Thursday): There’s a chance some light snow or snow showers linger into early morning, but they should be out of here quickly thereafter if so. Clouds should also break pretty rapidly as the day goes, leaving us mostly sunny for a majority of the time. Unfortunately, winds kick up a bit behind the system, with sustained winds near 20 mph at peak and gusts past 30 mph a good bet. That’ll make highs in the upper 20s to near 30 feel a good bit chillier.

See Dan Stillman’s 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.

Helping the homeless in the cold: Though area residents might be said to overreact to the cold, those who have no choice but to spend the time outside may need assistance. Mark Berman has compiled a list of numbers for you to call should you see a homeless person or anyone else in need of shelter during this cold spell.

By and  |  10:30 PM ET, 01/23/2013

Categories:  Forecasts

 
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