Snow accumulating 1 to 3 inches is forecast for Central Maryland starting late tonight, continuing tomorrow and possibly lingering through Tuesday, the National Weather Service said yesterday.
A winter storm approaching from the Deep South is expected to dump most of the snow south of Washington, where accumulations could reach 8 inches.
The storm also will bring markedly colder weather to Central Maryland.
Today's high in the Baltimore area probably won't get above 30, with tomorrow's top temperature in the mid-20s, the National Weather Service predicted.
"Snow is the ticket. The probability of precipitation is 90 percent," said Jose Marrero, a weather service meteorologist at Baltimore-Washington International Airport.
"It's just a matter of how much we get and how long it falls."
Mr. Marrero said the storm, which was near the border of Texas and Louisiana last night, would move toward the mid-Atlantic coast before turning northeast.
"It's a good chance we're going to miss it," Mr. Marrero said, meaning the worst of the storm.
But the forecaster didn't rule out the possibility of heavier accumulations for Central Maryland, either.
"The heavy snow line is just south of Washington, but there's not a lot of distance between us and Washington," he said.
"So the heavy snow line could easily shift."
Because of the low temperatures, the weather service predicted that all of the precipitation will be snow this time, in contrast to recent storms that have produced sleet and freezing rain.