A wet weather system passing through the region Tuesday and Wednesday is expected to bring mostly rain but could also generate some wintry precipitation in northern and western Maryland, according to the National Weather Service.
The weather service's Baltimore/Washington forecast office predicts about three-fourths of an inch of rainfall from Tuesday morning through Wednesday morning. The forecast does not call for a wintry mix for downtown Baltimore, however. A high pressure system moving off the New England coast Tuesday is likely to be responsible for a lack of cold air over Maryland that would support snowfall, forecasters wrote.
Snow is only a slim possibility for extreme northern parts of the state along the Mason-Dixon Line, according to forecast maps from the weather service's Hydrometeorological Prediction Center. The chances are only 1-10 percent for at least an inch of snow early Wednesday, according to the graphics.
But freezing rain and sleet are likely across central and western Maryland, according to forecast maps. The map places strong chances of some form of frozen precipitation across central and western Maryland in the wee hours of Wednesday morning.
The local weather service forecast office suggests freezing rain is possibly along higher elevations of 1,500 feet or more.
In southern New England, 4-6 inches of snow are possible Wednesday. AccuWeather.com's Henry Margusity predicts snowfall across a stretch from the Mississippi Valley to southern New Englandfrom Monday night through Wednesday morning.