PM Update: Raw rains to gradually diminish
Variably cloudy, breezy & cool Friday
* Winter outlook: Details | Methodology | FAQS | Related links *
* Live Q&A transcript from winter outlook lead author Matt Ross *
* Tomas taking rains to Haiti | Hurricane Tracking Center *
* Outside now? Radar, temps, clouds & more: Weather Wall *
Light to moderate rain has fallen almost continuously today with amounts generally around 0.75". Overcast skies have held temperatures in the upper 40s to low 50s. Steady rains should continue into the late afternoon or early evening.
Through Tonight: Rains decrease or end from southwest to northeast during the evening commute. But scattered showers remain a possibility through dawn. Temperatures slowly fall back into the low-to-mid 40s.
Tomorrow (Friday): Considerable clouds probably linger through mid-morning with an outside chance of a lingering shower (20-30%). By afternoon, skies are variably cloudy with sunshine emerging at times. Winds from the west and northwest at 10-20 mph keep it chilly, with highs in the mid-50s.
Snow big deal in Allegany: About 130 miles northwest of D.C., in the mountains of Western Maryland, a few inches of snow just doesn't cause the same ruckus it does in and around Washington. With that in mind, the National Weather Service has now raised the threshold for placing Allegany County, as well as several counties in West Virginia, under a Winter Weather Advisory or Winter Storm Watch. A Winter Weather Advisory now requires a forecast of 3" in 12 hours instead of 2". A Winter Storm Warning now requires at least a 50% chance of 6" in 12 hours instead of 5", or 8" in 24 hours instead of 7". "...this criteria should better fit what constitutes a nuisance and a life threatening event out there," said NWS warning coordination meteorologist Chris Strong in a Maryland Weather Blog story. See here for all watch, warning and advisory definitions (specific to the area covered by the NWS Baltimore/Washington Forecast Office).
| November 4, 2010; 3:40 PM ET
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