A fast-moving wave of low pressure will skirt to our south overnight producing a period of steady rain and snow. Snow shovels and plows will be needed across northern Maryland once again this Spring with some locations picking up more than four inches of snow.
Image below shows the latest High Resolution Rapid Refresh (HRRR) model simulating the future radar through 1 pm Wednesday.
Snow will pick up in intensity during the morning hours on Wednesday:
-Visibility will be reduced under a quarter of a mile as the Nor’easter rapidly deepens off of the Mid-Atlantic coastline.
-A deformation zone will likely develop right across the interstate 95 corridor allowing for enhanced lift as the atmosphere stretches. This enhanced lift in the atmosphere will cause snowfall rates to increase to one to two inches per hour along with rapidly deteriorating conditions on area roadways.
Models are trending slower and closer to the coast with the track of the Nor’easter that will wallop the Nation’s Capital with one of our biggest March snowfalls in recent memory.
Winter Storm Watches will likely be upgraded to Winter Storm Warnings with widespread closings tomorrow. As usual, National Airport will probably be the region’s biggest loser with about 6 to 8″ of snow due to the effect of idiots choosing to measure snow at a runway strip in south Arlington instead of measuring at the White House or Capitol Hill (oh and try to clear the snow board appropriately this time). Much higher accumulations can be expected across northwest Washington and the surrounding Metropolitan area.
The weight of the heavy, wet snow will cause power outages as winds begin to increase out of the northeast Tuesday night and Wednesday.
Expect major travel disruptions across the Northeast big cities of Washington, Baltimore Philadelphia and New York.