8:00 PM Monday March 13 – The winter storm on the way is still in two separate parts. Below is the latest radar simulation to track the snow/rain line and compare to my final call for snowfall. As I have been showing for the past few days, the joining of forces over the Mid Atlantic tonight and tomorrow will lead to snow developing and becoming very heavy before daybreak. A classic set up for our region is the influence of the warm water from the Chesapeake Bay and Atlantic Ocean. The developing blizzard along the coast will bring the snow/rain line right up along I-95. Any adjustment by 50 miles at this point could change the results for millions.

Brief Timeline:

Tonight: Snow. Heavy snow after midnight

Morning:

  • Mix with sleet and rain before sunrise from south to north. Mix gets close to Baltimore.
  • All snow north and west
  • Rain south and east

By Noon – Snow and cold air fill back in from the west

In my earlier posts, some people commented this would be a ‘bust’ if they were in an area that will mix over to rain, but it won’t stay that way.  There will be colder air wrapping in to bring back the snow during the morning.  Also keep in mind that just north of Baltimore and Washington will stay all snow and likely get over 12 inches. This is a major storm and will have a big impact for Tuesday and maybe Wednesday. Here is the latest radar simulation  showing how that snow/ice/rain line will be along I-95 and through the cities. But there is a little wiggle room and that is the hardest area to pin down. More notes below

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Freezing Line Right Through Baltimore

 

Snow Gets Pulled Back In with Cold Air

My Final Call For Snowfall – Staying the same from this morning

Also See

Winter Storm Q and A and NWS Snow Maps

 

Will this be a record storm?

See my report on March Snowstorm History In Baltimore

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