Tuesday, December 10th, 2:30PM
The midday model runs have finished and most agree that late tonight, the rain we have will slowly transition to snow showers and bring a slushy coating to as much as 2″ on mostly grassy surfaces. In some areas, there may be some heavier bands of snow that may cover roadways, but for the majority of the area, road surfaces will probably not accumulate. However, temperatures are expected to fall into the low 30’s across the area so icy conditions are possible for the morning commute. Based on the most recent model runs, the NWS has issued Winter Weather Advisories for areas along and west of the Blue Ridge for overnight and tomorrow morning for up to 5″ of snow across the summits, and also advisories for the morning commute until 8AM for the western portions of the 95 corridor including northern Baltimore, western Howard, and western Montgomery counties. Here is the link to the NWS map.
For now, those advisories do not include the immediate 95 corridor, but if by 11PM this evening, the models are still showing the possibility of snowfall or near freezing temperatures for the morning commute along the corridor, I’d expect advisories would be expanded east to include the eastern portions of Baltimore, Howard, Montgomery and the rest of the counties to the bay.
I’ll update again tonight before going turning in.
The Weather Mill 