Big Changes Possible Late Week as Powerful Nor’easter May Threaten Mid-Atlantic Coast

Last week I warned that the upper-level pattern was showing signs of becoming blocked and a pattern change to below- average temperatures is likely the second half of April across much of the eastern United States.

Potent Nor’easter May Impact Mid-Atlantic and New England Friday and Saturday

A very potent upper-level low pressure system depicted in the forecast model above (courtesy pivotal weather) will slide across the northern Mid-Atlantic states on Thursday, likely spawning the development of a coastal storm (Nor’easter) on Friday.

Depending upon the exact track of this system wet snow may accumulate in spots from the Alleghenies to the Poconos with a cold rain, gusty winds, and temperatures running twenty degrees below average (or more) for the lower elevations.

The latest European Operational Forecast Model

I will be watching a coastal low forecast to develop off the Delaware and New Jersey coastline on Friday morning and then slowly wobble offshore bringing a plethora of precipitation types (rain, sleet, and snow) across the Mid-Atlantic and New England.

The exact storm track will ultimately determine specific outcomes in precipitation types and amounts.

High temperatures in DC on Friday may hold in the lower to middle 50s, but if rain falls for much of the day we may not get out of the upper 40s. Our average high in mid April in DC is in the middle 60s.

For those of you in Snowshoe, WV northward to Garrett county Maryland, accumulating wet snow can’t be ruled out on Friday!