Weekend snowstorm now looks likely
The National Weather Service forecasters out in Sterling have finally come around, raising the snow chances for Central Maryland to 80 percent for Saturday. They're still uncertain how much moisture, and therefore how much snow, the storm will produce here. But, apparently, snow it will. Winter weather advisories, or watches, could begin to appear in the forecast this afternoon.
UPDATE 5 p.m.: The National Weather Service has posted a Winter Storm Watch for all of Maryland, from late Friday night until late Saturday night. At least 5 inches of snow is expected, with more possible. AccuWeather.com is calling for 8 to 12 inches from Washington to Dover, Del. The earlier post resumes below.
Snow fans and school kids should check out Mr. Foot's forecast. He's talking about 8 to 12 inches, with some impact on school schedules on Monday.
As we've said, there will be plenty of cold air in place. There's a low-pressure system parked over Nova Scotia, and the counter-clockwise rotation around that low is pulling a steady stream of cold air around the western side and pumping it into the Northeast. That will make it cold enough for this storm to be all snow here, with a rain/snow line - this time- well to our south and east.
The real snow-maker will be the low that is cranking up over the Gulf of Mexico. It will track east, providing another drenching for the Deep South. Then it will emerge off the southeast Atlantic coast early Saturday and begin to head north and east.
Circulation around that low will begin to pump Gulf and Atlantic moisture our way. The main snow band on the AccuWeather.com maps (that's one possible scenario, above) runs from western North Carolina, straight up the I-95 corridor to Boston. Here's another from AccuWeather's Henry Margusity, showing that he believes 3 to 6 inches could fall here.
The snow is likely to start falling here in the wee hours of Saturday morning, if the forecast holds up. Highs on Saturday will hover near freezing, so we should see some snow all day, continuing into early Sunday morning.
It's supposed to stay cold early next week, and there is some chatter about a Christmas storm. Could we have a rare Baltimore white Christmas? Stay tuned.