February 11 – The first of two arctic blasts is already here. You will feel it today, and the wind chill will be the focus. The second blast this weekend will be the one that one that could challenge record cold on Valentines Day. While I already wrote about multiple snow chances, the chance of snow on Presidents Day should not be a surprise to any of us. I still want to highlight that the storm next week still has not formed yet. In fact, as I have been paying most of my attention to the GFS Model it continues to prove my theory true. The track keeps shifting west. At some point it will lock in, but an extreme cold air mass usually hangs on longer than forecast. So we need to consider not the rain or snow lines showing up on forecast maps now, but that ice might be a factor Tuesday.
Arctic Blast: Snow Squalls
The arrival of the arctic air and approach of the Polar Vortex towards New England, will bring a push of snow. First it will be with the air mass itself. Then the long stream snow bands that develop off of the Great Lake. The upper air pattern supports the survival of snow showers into central Maryland and Delmarva into Saturday afternoon.