Weather Headlines for the Washington Region
Scattered snow showers will fall across the DC region tonight with one inch of snow accumulation possible. Some isolated locations could pick up locally 2". Temperatures will fall into the lower to middle 20s with slick conditions on area roadways.
A second clipper may produce some snow showers on Thursday afternoon.
Yes, the forecast was a complete bust. It happens. Nobody is perfect. The unrelenting warm air last night held strong later than anticipated and wasted over a quarter of an inch of liquid to fall as rain. If temperatures had been in the upper 20s to near 32 we would have squeezed out about 2 to 4″ of snow out of that by dawn. The second problem is tha the clipper transferred its energy to the coast robbing our area from steadier snow today.
Scattered snow showers will fall across the area this afternoon into the overnight hours producing a coating to one inch with some locations picking up 2 to 3.
Clipper System (tonight through Monday afternoon):
A mix of rain and snow will develop late this evening across northern Maryland, changing over to heavy snow during the overnight hours. Roads will become snow-covered making for difficult travel conditions.
A mix of rain and snow will develop across northern Virginia, DC, and central Maryland between 4 and 8 AM. The rain/snow mix should transition over to snow as the falling precipitation pulls down colder air aloft. Temperatures may be slower to fall below freezing from DC points south and east on Monday morning, preventing snow from accumulating until the afternoon/evening hours.
Nor’easter (Overnight Monday through Tuesday):
A Nor’easter will track close enough to the coast on Monday night to produce scattered snow squalls across the eastern half of the DC Region. During this time frame temperatures will be cold enough for every flake to stick. Some of these snow bands could easily drop one inch of snow per hour Monday night into Tuesday. For this reason, a Winter Storm Watch remains in effect for the counties in Maryland along the western shore of the Chesapeake Bay. An additional one to three inches of snow could fall Monday night across the DC Area with higher amounts (3″ +) possible to the east.
How quickly the forecast changes … out of nowhere we go from a clipper sliding to our south and off the coast to a full-blown Nor’easter rapidly deepening off of the Virginia coastline (Tuesday morning) and then crawling northeastward towards New England (Tuesday/Wednesday). Check out the latest snowfall forecasts from the GFS, NAM and ECMWF.
As it stands now the DC Area may receive 2 to 4″+ of snow with 4 to 6″+ across Northern Maryland and the foothills of West Virginia & Northwestern Virginia.
If this Nor’easter deepens even more rapidly than currently forecasted and tracks a bit closer to the coast, the 95 corridor here in the Washington Region may find itself on the western periphery of a powerful Nor’easter with back-lash snows on Tuesday.
A strong clipper will track out of the Midwest and across the Carolinas before emerging off of the Mid-Atlantic coastline where all indications are that it will bomb out into a Nor’easter likely slamming New England with Blizzard Conditions.
Winter Storm Watches may be issued by the National Weather Service for parts of our area as the potential exists for 4 or more inches of snow overnight Sunday into Monday.
Let’s take a look at the latest GFS (12z) showing how this clipper may track: