Baltimore, MD - Mike Masco
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Our computer forecast model guidance continues to indicate a strong storm will form between Virginia and Massachusetts Thursday night through Saturday as two storms phase together Thursday night into Friday.
The image below shows our water vapor imagery picking up on two pieces of energy over the northern and southern jet stream. As these two pieces of energy move east they will phase together Thursday night bringing rain to most of the Mid Atlantic by Friday.
Our simulation radar shows a wintry mix for areas north of I 70 Friday morning with rain showers developing south and east of Baltimore. Heavy rain will move in for most of Friday mid morning through the afternoon.
By Friday evening the storm will start to intensify. Our RPM model shows the storm much closer to the coast then most guidance with the heaviest sleet/snow developing over western Maryland. This would mean a heavy rain situation for most areas from Baltimore south and east and a battle of sleet and rain just north and west of the metro & I 70. Areas over Frederick county will stay a sleet situation for a while with a change over between rain and snow from time to time going into Friday evening.
By Friday night the storm will wrap cold air south and allow for the City and much of the mid atlantic to switch to sleet and snow before ending late Friday night. This storm will cause a MAJOR snow storm for New England and a moderate snowfall for NJ, NYC, and Long Island NY.
Our in house RPM model at ABC 2 shows a potential coating of snow at the end of the storm early Saturday morning for Baltimore metro. Again this storm will be a Rain/Sleet to heavy rain event. There maybe some moisture left over to bring a light coating of snow.
MAJOR snow will develop from NYC to Boston with some areas picking up over 2 feet of snow!
The new NAM model shows a historic 50" of snow falling on Boston!