Here We Go Again…

Click for larger image.

OK, it’s unlikely we’ll see 30+ inches in any location affected by this storm, but it’s another round of snow for much of the country, including the megalopolis from DC to NYC.  One system will slide out of Canada across the northern Plains while a panhandle hook will move out of the southern Rockies and across the southern Plains.  These two storms will merge together (or phase together) and create one storm that will move through the Ohio Valley and Great Lakes.  As it weakens, another coastal low is forecast develop to the east, bringing snow to the mid-Atlantic again.

Given the recent storm, the Pittsburgh and Baltimore/DC NWS offices have already issued a Winter Storm Watch even though the storm is still 48 hours away and total snow accumulation is hard to judge.  Back to the West, most of the warned areas in the middle of the country should see around 4-8 inches of snow as these storms move through today and tomorrow.  In the mid-Atlantic, the NWS watch mentions 5+ inches.  However, if the GFS (Global Forecast System computer model) precipitation forecast were to verify and remain all snow through the event, it’s possible the DC-Baltimore-Philly area could see another double-digit event.  Again, not 20+ inches, but a foot wouldn’t be out of the question.  Now, the GFS has a tendency to over-forecast precipitation, so maybe (hopefully?) this will be the case and these recently hard-hit areas will see just 5-7 inches.  Of course, I have no idea where they will put the snow.  They were taking it out of my neighborhood in dump trucks earlier today.

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