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Posted at 05:00 AM ET, 12/25/2012

D.C. area forecast: Dry today, but next storm arrives tomorrow; snow chance this weekend

* Winter Storm Watch for Loudoun and Frederick Co. & Blue Ridge | Christmas Eve snow totals *

EXPRESS FORECAST

Today: Variable skies, seasonable. 42-48. | Tonight: Increasing clouds. 30-36. | Tomorrow: Chance AM Mix, PM rain. 45-55. | Get Express Forecast by E-mail

TODAY'S DAILY DIGIT

A somewhat subjective rating of the day’s weather, on a scale of 0 to 10


While cloudy and foggy at start, not a bad holiday overall. Get the Digit on Twitter| Discuss on Facebook

SNOW POTENTIAL INDEX

A daily assessment of the potential for *accumulating* snow for the next week on a 0-10 scale. More info


SPI: 5 (→) - Latest storm track estimate for this weekend favors some snow for D.C.-area, but confidence still low on this track. Get the SPI on Twitter | Discuss on Facebook

FORECAST IN DETAIL


Christmas Day offers some atmospheric peace on our part of the earth with drier weather, some partial clearing, slightly milder than normal temperatures, and light winds. But we start seeing signs of the next big weathermaker by tonight as clouds roll back into the picture.

Tomorrow brings mostly rain, but look out for mixed precipitation in especially the far western to northwestern suburbs mainly in the morning. Slow clearing on Thursday and another break on Friday precede a potential weekend winter storm that has a better chance to deliver snow to the area (see below for more detail!).

Christmas Day (Today): Patchy fog, morning clouds, and some afternoon sky variability is expected with highs in the mid-to-upper 40s (except low 40s where there’s snow cover) along with light winds from the northwest at 5-10 mph. High pressure is drifting across to the north of our area to offer our brief holiday reprieve from inclement weather. Confidence: High

Tonight: Clouds march into the region in advance of the next storm system. Lows drop into the low-to-mid 30s, but if clouds arrive slower, some outlying areas could briefly dip into the 20s. Confidence: Medium

For related traffic news, check out Dr. Gridlock. Keep reading for the forecast through the weekend...

Tomorrow (Wednesday): A very juicy southern storm arrives during the day. The far western and northwestern suburbs run the risk of mixed precipitation (sleet/freezing rain/snow) in the morning hours. (Serious icing is possible in northwest Virginia with significant snow and ice inWest Va. and western Maryland). Rain should encompass most of the region by late morning or early afternoon. It gets heavy at times by late afternoon into the evening hours with even a risk of thunder and gusty winds. Highs should range from the middle 50s in the far southeast (by late in the day) to the low-to-mid 40s in the far northwest. Total rainfall could range between 1 and 2 inches (much needed!). Confidence: Low-Medium

Tomorrow night: Rain possibly mixing with or changing to snow showers toward dawn. Lows dropping back down and ranging through the 30s (or upper 20s well north/west of city). Breezier conditions toward early morning add to the wind chill. Confidence: Medium

A LOOK AHEAD

Thursday finds breezy conditions, a risk for morning rain or snow showers (30 percent chance), and temperatures working their way back up into the 40s under variable sky conditions. The best chance to see sunshine more frequently should be by afternoon. Thursday night is partly cloudy and colder with lows ranging from the mid-20s in the outer suburbs to the low 30s in the city. Confidence: Medium

Friday is a fair weather day with partly to mostly sunny skies and highs in the low-to-mid 40s. Friday night skies are partly cloudy with lows from the 20s to the low 30s. Confidence: Medium

The weekend delivers our next storm. Most guidance currently carries this system to our south and east, meaning it may be the best chance yet for more widespread snow accumulations this season. It is still very early, and the storm could stay so far to the south and east that it gives us very little of anything instead. Clouds increase on Saturday with the main precipitation risks that afternoon into night. It may linger into Sunday morning before clearing somewhat by afternoon as winds pick up again. Highs on Saturday range from the 30s into the 40s both days. Lows range through the 20s and 30s. Confidence: Low

By  |  05:00 AM ET, 12/25/2012

Categories:  Forecasts

 
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