Snow showers reached the Baltimore area Thursday night and left about half an inch of snow in the region, according to the National Weather Service.
Other areas in Howard, Montgomery and Prince George’s counties reported preliminary snowfalls totaling more than an inch.
School districts in Baltimore city and Baltimore, Anne Arundel, Carroll, Harford and Howard counties announced their schools would open two hours later Friday morning.
Baltimore’s Department of Transportation advised motorists to drive slowly and to watch out for slick roadways, especially bridges and overpasses.
Baltimore-Washington International Thurgood Marshall Airport tweeted at 4:08 a.m. that conditions were normal.
For the weekend, a storm is likely to bring a mix of ice, rain and snow to the Baltimore area.
Weather service forecasters said precipitation could arrive across Maryland by early Saturday afternoon and start as a wintry mix, with mostly cold air over the region but a layer of warmer air creeping in overhead.
By Saturday evening, it’s expected to transition to rain for most of the region, though a period of freezing rain is also possible if cold air lingers close to the ground. As much as an inch of rain could fall, potentially causing some flooding because the ground is frozen and some snowpack remains from last weekend’s snowfall.
Western Maryland faces the highest risks of significant ice accumulation. Garrett, Allegany and Washington counties are under a winter storm watch, warned that as much as a quarter of an inch of ice could accumulate.
Frigid air is expected to move in behind the storm. Temperatures are forecast to plummet to the single digits late Sunday night into early Monday morning.
The storm is forecast to be a massive system, dumping snow from the Midwest into New England and potentially causing flash flooding across parts of the Southeast. AccuWeather.com warned of blizzard conditions and feet of snow possible across the interior Northeast, from Pennsylvania to Maine. Mixed precipitation is likely to stretch along the I-95 corridor from Washington to Boston.
AccuWeather.com forecasters cautioned that any southward shift in the storm’s track could increase ice accumulations for the I-95 corridor. But they otherwise agreed that the biggest threat for downed tree limbs, power outages and travel disruptions in Maryland is expected in western portions of the state.