Frederick County should brace for heavy snow and sleet over the next 24 hours.
The National Weather Service has issued a winter storm warning for parts of north central and western Maryland from 7 a.m. Wednesday to 4 a.m. Thursday, including Frederick County.
The National Weather Service predicts heavy mixed precipitation, with snow and sleet accumulating between 6 and 12 inches east of the Blue Ridge Mountains. Near the mountains, expect a tenth of an inch of ice. Snow may accumulate 12 to 18 inches from the I-81 corridor westward and near the Mason-Dixon Line.
Snow should spread over 9 to 11 a.m., with the heaviest snow anticipated during the late afternoon and evening. Morning and evening commutes may be affected, with the weather making travel "very difficult to impossible," according to the weather service.
Those who must travel should carry a flashlight, water and food in their vehicles, the weather service advises.
In a Facebook post Tuesday, Frederick County Sheriff's Office asked motorists to stay off the roads during the storm. For those who have to travel, the sheriff's office reminded them to follow Maryland's Move Over law for passing emergency vehicles.
Frederick County government operations will close at noon in preparation for the storm, while courts will be closed all day. County TransIT will continue as long as buses can travel.