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Posted at 04:40 PM ET, 12/06/2011

PM Update: Rainy, gradually turning colder; wet snow holds off until late Wed. night

* Update 11 p.m.: Evening models show no reason to change forecast below or accumulation map in Wes’ earlier post.

* Update 9 p.m.: Heavy rain likely Wednesday, Flood Watch in the afternoon and evening *

It was a dark, damp, gloomy day, but at least mild temperatures around 60 prevented it from being downright raw. That’s not the case tomorrow, as temperatures fall while rain increases in intensity. Flooding is even possible. Then snow enters the equation as Wednesday night wears on.

Through Tonight: Much like today, it’s cloudy and mild with occasional light rain. Thanks to south winds, temperatures fall just a touch, with lows in the low-to-mid 50s.

Wednesday and Wednesday night: Intermittent rain is guaranteed, and may be heavy at times, especially into the evening. Temperatures start the day in the low-to-mid 50s and gradually fall back into the 40s by sunset. No snow for the PM commute, but a driving rain may be developing.

After dark, heavy rain is likely along with falling temperatures. Rainfall amounts range from 1-2 inches, with locally higher amounts. Rain may begin transitioning to snow between 8 p.m. and 1 a.m. from northwest to southeast, with temperatures dipping back into the 30s. Any snow ends before the a.m. rush, with lows 30-35 (suburbs to city). See Wes Junker’s post from earlier for more detail and our accumulation outlook.

See Brian Jackson’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.

New NOAA weather satellite: NOAA activated a new geostationary satellite, known as GOES-15, effective today. GOES-15 will keep an eye on storm systems over the Pacific Ocean, replacing GOES-11, its predecessor. See some of the initial imagery from NOAA’s Environmental Visualization Laboratory.

By  |  04:40 PM ET, 12/06/2011

Categories:  Forecasts

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