A major winter storm will be impacting the region Sunday night through Monday morning with periods of snow changing to rain along the coast while a heavy snowstorm unfolds over the interior.  While rain is mostly expected along the coast, the threat of wind gusts over 40 mph and significant coastal flooding will be a concern.  

SUNDAY AFTERNOON

An initial band of snow will begin to lift through the region from 4 PM to 8 PM.  To the north and west of the I-95 corridor, this will be a band of heavy wet snow with some sleet mixing in as well.  Meanwhile, along the coast, an initial burst of snow and sleet will quickly change over to rain on the immediate coast and then push north and westwards through the evening.  Winds will increase from the east from 5 to 15 mph to 10 to 20 mph with gusts over 30 mph.  

SUNDAY EVENING

From 8 PM to 12 AM, periods of moderate to heavy snow will continue over northeastern Pennsylvania, northwest New Jersey, the Catskills, Hudson River Valley, and interior Connecticut.  Poor visibility can be expected with snow-covered and snow-packed roadways.  Meanwhile, the low-level cold air will gradually give way in the Delaware River Valley with sleet and freezing rain the primary concerns with some snow before changing over to rain by midnight.  Slick and icy roadways will remain a concern.  Periods of rain will continue along the coast with major ponding on roadways and areas of flash flooding.  Winds will increase to 15 to 30 mph sustained with gusts between 40 mph to 70 mph.  Coastal flooding will be a threat along with power outages.

EARLY MONDAY MORNING

From 12 AM to 4 AM, all wintry mix in zones 3, 4, and 5 will be rain, heavy at times.  Meanwhile, a mix of snow and sleet will continue in zones 1 and 2.  More sleet is expected in zone 2, which will hold down snowfall totals.  Meanwhile, there is a threat for intense mesoscale banding in zone 1 which could push snowfall totals up to 12".  Winds will begin to veer from the east to the southwest at 15 to 30 mph with gusts from 30 to 60 mph.  Coastal flooding and power outages will remain a threat.

MONDAY MORNING

From 4 AM to 8 AM, the storm will lift north into the central Hudson River Valley with heavy precipitation coming to an end.  Winds will be from west-southwest at 10 to 20 mph with gusts over 30 mph at times.  Temperatures will hold through the morning and then fall towards freezing with lingering rain and snow showers.