Mild conditions are in place this afternoon, but this mild break will end abruptly tonight with temperatures crashing into the 10s and 20s by morning. This cold air mass will set the stage for another winter storm that will invade by Thursday.
An area of low pressure will develop in the Gulf of Mexico tomorrow morning and begin lifting north towards the Tennessee River Valley through tomorrow evening. This low-pressure system will begin to redevelop towards the Delmarva Peninsula by tomorrow night.
By Thursday morning, snow showers will begin to develop from south to north from 6 AM to 10 AM. The snow showers will feature near-immediate snow accumulation as temperatures will be in the 20s to lower 30s throughout the region.
As the low-pressure system slowly tracks towards the New Jersey coastal waters, periods of snow will expand north and west towards the Poconos and Catskills on Thursday evening. Meanwhile, warm air from the coastal waters will produce areas of mixing of sleet in zone 3 and a mix of sleet and rain in zones 4, 5, and 6. On Thursday evening, there will also be an increased potential for moderate to heavy snowfall, especially in zones 2 and 3.
The low-pressure system will exit on Friday morning with the wintry mix changing back over to snow from west to east. The precipitation will exit from 11 AM to 2 PM on Friday.
The exact track of this storm will have an influence on snowfall totals and there is a chance this low-pressure system is stronger which may produce heavier snowfall and thus more snowfall. However, at this time, a weak low-pressure system is expected.