Winter Weather Advisories are now in place for Carroll, Baltimore, Harford, and Cecil counties as low pressure from the upper Midwest transfers to the coast.Temperatures in most locations are above freezing so many of us may actually begin as a wintry mix or even just plain rain. Temperatures do look to cool as the day goes on creating that window of opportunity for accumulating snow. We anticipate this to be a mainly icy mix to snow event for most area with wet roads and a few slick spots the further north and east of the city you go into the evening hours.
The mixed bag of precipitation starts to move into the area this evening and turns heavy between 2am-6am Wednesday. Most locations will start as a mix as the system continues to track to the northeast. Precipitation will eventually transition to all snow north and east of Baltimore after 11pm thanks to evaporative cooling while remaining a mix to rain on the Eastern Shore. With road temperatures well above freezing given the high March sun angle, snow should have a difficult time accumulating, though some slick roads are possible especially north and east of the city. Temperatures though will be the biggest factor here in determining the precipitation type. Most of us will see readings steady in the 30s while others to our south touch 40 degrees.
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The PA/MD State Line will see the best chance of accumulating snow, especially Cecil, northern Baltimore, and northern Harford Counties. These areas could see anywhere from 2-4" of snow with localized pockets of 6" east of Cockeysville/Parkton and back over to Elkton/Cecilton.
Around Baltimore and I-95 we could see a quick thump of Dusting-2" with a little more as you head out toward Towson, Catonsville, White Marsh, and Bel Air. Annapolis over to Chestertown likely to see a quick dusting or nothing at all as more rain mixes in.
The highest elevations of Allegany and Garrett counties will see the least amount accumulating snow, this go around especially east of I-68. These areas could see anywhere from 1-3" of snow with a light glaze of ice.
The forecast remains active with another coastal storm in the forecast by the weekend ahead. Highs expected to be at or below average. A pattern more indicative of mid to late February.