wpostServer: http://css.washingtonpost.com/wpost

The Post Most: Local

Posted at 05:00 AM ET, 01/22/2013

D.C. area forecast: Winter works overtime with cold blast and Friday snow chance

EXPRESS FORECAST

Today: Sunny, very cold, windy. 23-30. | Tonight: Mostly clear. Bitter cold. 9-16. | Tomorrow: Mostly sunny, cold. 24-29. | 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


Blame the wind. It’ll make those cold 20s feel a whole lot worse.. 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 (↑) - Friday winter weather risk edges up, but still shaky details on precip type/amounts. Get the SPI on Twitter | Discuss on Facebook

FORECAST IN DETAIL


Well. Apparently winter is trying to seriously make up for lost time this week by hitting us hard with a strong Arctic air mass, whipping up the wind chills to a most unpleasant level, pushing overnight temperatures to levels not seen in at least two years, and even queuing up a possible winter weather maker for Friday.

The hard freeze this week is notable as most areas should stay below the freezing mark from today through Thursday or Friday, at least. Last year, we saw exactly zero days that accomplished such a feat. The weekend still looks cold, but should at least be dry and mostly sunny.

Today (Tuesday): The vicious wind of 15-20 mph with higher gusts is the main problem today as it drives the wind chill well down into the teens (single digits at times) even when we reach our high temperature range in the mid-to-upper 20s. The one saving offset is mostly sunny skies. This air mass is really dry too with very low dew points. You may want to run your humidifiers. Confidence: High

Tonight: Mostly clear with winds gradually calming from 10-15 mph in the evening toward just near 5 mph by dawn. Temperatures should take an impressive dive with single digit lows in the outer suburbs to the low to middle teens in the city. Confidence: High

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

Tomorrow (Wednesday): Mostly sunny skies and still cold, but at least the wind isn’t salting the wound. Highs should range through the 20s again. Light breezes. Confidence: High

Tomorrow night: Partly cloudy and not quite as cold. Lows from 15-20 with some colder readings in outlying western to northern areas. Confidence: High

A LOOK AHEAD

Thursday could see a few more clouds especially toward the afternoon and evening. Highs are still on the cold side with upper 20s to low 30s. Clouds increase Thursday night with lows in the 20s with some teens in the outer suburbs. Confidence: Medium-High

Friday brings our wintry weather risk with precipitation starting in thie morning and ending Friday night. The latest trends are back in the frozen direction with mostly snow, but there is also the risk of sleet, freezing rain, or just rain mixing in pending the final track of the storm system. If we stay all snow or mostly snow, we could see our first 1”+ accumulating snow of the season, but it’s too early to give better details yet. Highs are in the mid-20s to mid-30s, depending on storm track. Friday night’s lows drop down into the 20s - so even if we see mixed precipitation, everything should freeze back over again. Confidence: Low-Medium

The weekend continues the cold winter is back in action theme with partly to mostly sunny skies, highs in the 20s to middle 30s and lows in the teens to low 20s. Confidence: Low-Medium

By  |  05:00 AM ET, 01/22/2013

Categories:  Forecasts

 
Read what others are saying
     

    © 2011 The Washington Post Company