Meteorologists call it a "dry slot" - an intrusion of clear, dry air, drawn into the swirling clouds around a spinning low pressure system. There's one over Central Maryland this morning. as the satellite image above shows quite well. And that dry slot is what's brought us this delightful sunny morning.

The low is centered over the Great Lakes. As it spins in a counter-clockwise direction, it is bringing winds here from the north and west. And that's going to mean more snow for the far western counties of Maryland., where the morning looks far different than ours at the moment. 

The National Weather Service forecast office in Pittsburgh has issued a Winter Weather Advisory for Garrett, from noon today through noon Wednesday. They're told to expect 4 to 6 inches of new snow before the storm tapers off tomorrow. Some higher elevations could see 8 inches.

Far western Allegany County, including the town of Frostburg, are also under a Winter Weather Advisory issued from Sterling. Lake effect snow showers are expected there from 11 a.m. today through 1 p.m. tomorrow. Accumulations of "up to 7 inches" are possible in some locations.

Looks like the snow is already falling at Deep Creek Lake. Here's a shot from the Taylor Made Vacation Rentals Web cam.

In the meantime, there's no dry slot over Ocean City, where it was gray and rainy this morning. Here's the Kite Loft Web cam.