A very dynamic upper level pattern will energize a storm off the Virginia Capes into a monster as it travels just offshore tonight and Sunday Morning. BOMBOGENESIS will be occurring.
BOMBOGENESIS....A rapidly intensifying storm that drops at least 24 millibars(sea level pressure in a storm) in 24 hours. This storm will drop 42 millibars in 24 hours! From 1002mb= 29.59" at 7pm tonight down to an amazing 960mb = 28.33" at 7pm tomorrow night. Snow lovers if this track was 100 to 150 miles farther West it would be a blizzard for the NYC area (map below.)
The Western snow shield of this monster will graze the NJ coast and NYC with snow showers tonight. Heading East through Long Island a steadier snow is possible. Eastern Long Island and Southeastern CT, will most likely see an accumulating snow. Winds will increase later tonight, making for blowing snow and low visibility.
A light to moderate accumulation is expected for Eastern Suffolk County and Southeast CT. The snow will taper off by mid morning Sunday over the twin forks of Long Island.
This will become a nowcasting situation with radar trends through the night, this amounts may have to be adjusted up or down.