Storm Warning expanded, 5 to 10" expected

The Southern low that is driving this sprawling event is still expected to reach the coast and intensify, dropping temperatures across the region and triggering a new, more intense round of snowfall later this afternoon, and continuing into the night.

The Winter Storm Warnings now encompass all Maryland counties from Garrett to Prince Georges and Arundel, and the Upper Eastern Shore. They're all calling for 5 to 10 inches of snow before it all ends overnight. Only Southern Maryland and the Lower Shore remain under Winter Weather Advisories (less than 5 inches).

Here's the forecast discussion from Sterling: "THE SECOND WAVE OF THIS STRENGTHENING STORM SYSTEM WILL BE THE MAIN CONCERN FOR THE MID ATLANTIC REGION. UPPER LOW IN WESTERN NORTH CAROLINA/VIRGINIA AT THE MOMENT. THUNDER HAS BEEN NOTED IN THE VICINITY OF THE LOW ... INDICATING ENERGY INVOLVED.

"THE UPPER LOW WILL JUMP TO THE COAST BY LATE AFTERNOON AND UNDERGO
SIGNIFICANT INTENSIFICATION THIS EVNG. THE DYNAMIC COOLING WILL SUPPORT
MAINLY SNOW...EVEN IF SURFACE CONDITIONS MILD. THEREFORE PRECIP SHUD START AS
RAIN DC SOUTHEAST ...BUT CHANGE OVER QUICKLY. EXPECT BAND OF HEAVIER SNOWFALL...

"THE HEAVIER BANDS WILL BE PUSHING INTO THE I-95 CORRIDOR AND OVER
THE BAY NEAR MIDNIGHT. SNOW WILL END FAIRLY QUICKLY ALONG THE WESTERN EDGE
INTO THE EARLY MORNING HRS...AND BY 3-5AM THE LAST PORTION OF THE
BAND WILL BE ENDING OVER THE MD BAY...SLIDING EASTWARD OVER DELMARVA
AND TOWARD SOUTHERN NEW ENGLAND."

So far, the storm has dropped the most snow on the northern counties - especially Harford and Baltimore. Kingsville, in Harford County, reported 4 inches. Here are more totals from the CoCoRaHS Network.