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Posted at 5:00 AM ET, 01/22/2008

Forecast: Light Wintry Mix Today

By Matt Ross

Cold pattern tries to hang tough

***A Winter Weather Advisory is in effect for the entire metro area***

Before folks get too excited about snow in the forecast, understand this is not a major storm. Patchy light snow will probably develop over the area late this morning ahead of an approaching cold front. Snow should change to a wintry mix of freezing rain, sleet and perhaps plain old rain as the afternoon progresses before tapering off late this afternoon or evening. Only a very light accumulation of snow and ice, if any, is expected. However, given cold ground temperatures it won't take much for slick spots to develop, especially on untreated surfaces and north and west of the city. After today, it will remain cold for several days with another possibility of some light snow or flurries Thursday morning. By the weekend, temperatures should begin moderating.


A bit of light snow changing to ice and rain. Mid 30s. Here is what you need to know about today's wintry weather:

  • The start time for any light snow or flurries should be late morning to early afternoon.
  • By mid-afternoon, snow may mix with sleet and freezing rain.
  • The precipitation should end as a wintry mix or plain rain late this afternoon or early this evening.
  • As we have been under a very cold air mass for the last couple days, the cold air will be hard to scour out despite a mild southerly wind ahead of the front.
  • Precipitation will not last long and amounts will be light. A dusting to less than an inch of snow is possible as well as a light glaze of ice, particularly north and west of DC.
  • Areas north and west of DC may experience freezing/below freezing temperatures for much or all of the event. Ice is the greatest threat in these areas as warm air aloft is likely to change the snow over to sleet and freezing rain while temperatures at the surface remain at or below freezing.
  • Given the overall lack of moisture with this front, some areas may receive very little precipitation.

Overnight, skies will become partly cloudy with lows in the mid 20s.


Partly sunny, blustery. 35-40. Wednesday will be sunny, breezy and cold as some fresh arctic air settles over the region. Afternoon highs will be slightly below normal in the mid to upper 30s. Overnight, it will be partly cloudy and cold. Some flurries or snow showers are possible (20%) with a reinforcing shot of cold air. Lows will dip to the upper teens to low 20s.

Keep reading for the forecast through the weekend ...


Becoming cloudy, light snow? 30-35. Thursday will likely make our 5th consecutive day with below normal temperatures. A clipper, a fast moving weather disturbance originating in Canada, will bring a chance of light snow (20%) with temperatures only reaching the low to mid 30s. (The clipper may redevelop as a coastal storm Thursday, enhancing snow over the region, but that is a very low probability). Clear and very cold conditions overnight with lows in the teens.


On Friday it will be sunny and dry with temperatures remaining below normal in the mid 30s.

The weekend will feature gradually warming temperatures. It will be dry with highs near 40 on Saturday and mostly cloudy with a slight chance of rain on Sunday. Temperatures should reach the mid 40s.

By Matt Ross  | January 22, 2008; 5:00 AM ET
Categories:  Forecasts  
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