One to 3 inches of snow should fall in the central part of the state by tonight while up to 4 inches could accumulate in counties north of the city and in Western Maryland as winter refuses to defer to the start of spring, eight days away.
In a revised forecast reducing the expected accumulation, the National Weather Service at Baltimore-Washington International Airport said one to 3 inches of snow will fall in the city and through the central part of the state. Residents of Baltimore, Harford and Carroll counties should see 2 to 4 inches of snow, with higher amounts in northern sections.
An inch or less is anticipated for the southern portion of Maryland and intermittent snow and rain for the Eastern Shore.
Last year on this date, the weather also was contrary. The high temperature was 92 degrees.
Today's relatively warm ground was melting the initial snowfall but was expected to cool later in the day.
The storm will move out of the state by tomorrow morning, the weather service said.
The snow started to fall shortly after 9 a.m. in the city and was expected to continue through the night into tomorrow morning, said Bob Melrose, a weather service forecaster.
Mixed precipitation was expected south and east of the city. Temperatures were expected to be in the low to mid-30s through the day and overnight.
Two separate fronts moving from the west and south are responsible for forming the storm.
A swirling low-pressure front that moved through the Midwest stalled for a time at the Appalachian Mountains before it picked up again and started its slow approach to the East Coast.
That storm met a moisture-laden system moving up from the South, triggering the collision of a cold front and a system of warm, moist air that moved up from Florida.
Today's temperatures in the mid-30s were expected to drop only a few degrees overnight because of the cloud cover, Melrose said.
Today's snow comes a day after Baltimore school officials announced a new policy that provides the option of delaying the opening of school until 10 a.m. in case of bad weather.
Classes were held on a normal schedule today.