From the ABC 7 Weather team

Snow timeline for the D.C. area

January 16, 2013 - 04:38 PM
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When will the snow start? How much by noon? How much be 5 p.m.? How will it affect tomorrow’s commute?

This storm continues to evolve as new model guidance comes out and the system approaches the D.C. area from the southwest. In reality, the main energy that will strengthen into Thursday's system is still located over the Deep South. Scattered showers will continue to be possible through tonight and we believe will still be the story for Thursday morning's commute.

Beyond that, there are some discrepancies. Rain is expected to change over to snow tomorrow late morning to early afternoon, with it occurring from northwest to southeast as colder air fills in at the surface. By Noon, the changeover should be occurring, and no accumulation is really expected by that time. The afternoon hours will be the primary time period for snow accumulation, with up to a couple of inches possible in parts of the area by the evening rush hour. This could make for a tricky commute home, especially if you live south of D.C., where heavier snow accumulations are forecast.

Snow forecast for Thursday

If you live north and west of the D.C. Metro, there is little to no snow in the forecast, with a trace possible in some locations and 2 to 4 inches still forecast for the D.C. Metro. We are not expecting Commuteageddon 2, which everyone recalls from 2 years ago when everyone got stuck heading home. That is not in the cards tomorrow. With that being said, snow will continue to be possible in the overnight hours before ending early Friday morning.

This will lead to the chance for more delays Friday morning as far as schools are concerned. Temperatures will be in the 20s by Friday morning so icy spots, particularly where heavier snow occurred, will be likely. Breezy winds and plenty of sunshine Friday should help dry out the roadways for the evening commute. Weekend temperatures will jump back into the mid 40s ahead of the next arctic plunge expected for Martin Luther King Jr. Day Monday.

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