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Wintry mix this weekend

The National Weather Service forecast is calling for snow, sleet and freezing rain overnight into Saturday morning. And Sunday isn't looking great either.

UPDATE 3 p.m.:  A winter weather advisory is in effect from 11 p.m. Friday to 1 p.m. Saturday calling for accumulations of 1-2 inches of sleet and snow and two-tenths inch of ice from freezing rain.


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Meteorologist Kevin Witt told The Baltimore Sun that the entire Baltimore area will be affected by the wintry mix, and the most precipitation will come between midnight Friday and noon Saturday.

"It's a wide system. We're going to see a little bit of everything," he said.

Witt said the precipitation will start with snow and then become a mix of snow, sleet and freezing rain.

"The onset will be this evening, and then we'll see the snow and sleet and then sleet and freezing rain," Witt said. "The brunt of it will be overnight and into tomorrow morning. Midnight to noon will be the worst time, and then it will tail off."

 Baltimore professional meteorologist Eric the Red's take:

"The models do have enough cold air initially holding firm east of the mountains and from Baltimore north to produce a period of accumulating sleet and snow late tonight.  The farther north you go, the better chance you have of seeing an inch or two of snow before it changes of to sleet and freezing rain.  So the updated outlook is for a brief period of snow late tonight, changing to sleet and freezing rain by morning in most locales.  Across [northern Maryland], snow may last long enough to accumulate 1 to 2 [inches] before changing over.  Everywhere else, an inch or less is expected."

As far as Sunday goes, the National Weather Service says there could be a second round of sleet, freezing rain and then rain Sunday and Sunday night, but not enough accumulation for a winter storm watch to be issued yet. Stay tuned.

1:55 p.m. UPDATE from Eric the Red: 

"Cold air is pushing into the region at the surface.  At the same time, moisture will come at us from the west and south.  Warmer air will also push into the region aloft, changing the snow to sleet ... and freezing rain. ...  So we're looking at a decent shot of snow and sleet tonight ... an inch of snow and sleet south of Baltimore is possible before changing to freezing rain and rain, while I'll go with 1 to 2 [inches] from Baltimore north, with potentially more (2-4 inches) as you head up toward the PA line, esp if the cold air holds longer than expected. 
Temps will struggle to get above freezing Saturday, and many locales north and west of town won't top freezing at all.  Arctic air pushes south back into the region at the surface Saturday night, setting the stage for a super dicey Sunday ... with freezing drizzle and ice grains possible."  

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