... And what a snowstorm it could be...

To follow-up from Monday's post, the 12Z NAM model just finished and wow is it interesting! It quickly and nearly perfectly phases the two upper-level shortwave troughs, one currently over the Gulf of Mexico and the other currently over southwestern Canada, with the resulting long(er)-wave trough taking on a negative tilt. This forces strong and rapid surface cyclogenesis off the Outer Banks of NC, with a sub-984mb surface low hugging the coast by 12Z Saturday. This solution is also very precipitation-heavy, with copious amounts of liquid-equivalent extending from northern Georgia through all of Virginia and to the Delaware coast. I've attached the 24-hr precip total ending 00Z Sunday, which shows many areas predicted to receive 1"+ of liquid-equivalent. Using a standard 10-to-1 snow-to-liquid ratio, Annapolis would again receive over 10" of snow. We'll see what transpires; again, I've offered to drive a Midshipman to BWI at 5 p.m. on Saturday!