Winter Isn’t Quite Done Yet Despite the Official Start of Spring Next Week

(Sunrise over the National Mall – courtesy Gary W. House/Flickr) Get ready for a nice little reprieve from the clouds as sunshine is back in the forecast on Monday and Tuesday in the Washington Region. A late week warm up is in store as well as the potential for thunderstorms on Friday. The official start of Spring is now less than ten days away with the Equinox occurring on 20 March but are we done with the cold and snow?

Will we add to the seasonal snowfall totals across the northeast? I am ready for Spring but there are snow-lovers from Philadelphia to Boston who feel ripped off this winter as much of the precipitation has fallen in the form of rain. While D.C. has received slightly above normal snowfall (16.6″ unofficially through February at Reagan National Airport), Boston is running a thirty-inch snowfall deficit.

The latest European (ECMWF) Ensemble model (image below courtesy WxBell) shows a ridge of High Pressure building across the western United States as we head into the middle portion of next week, forcing a trough to establish itself across the eastern United States. If this trough develops, below-average temperatures and additional chances for snow would increase across the Mid-Atlantic and New England.

The image below from the European Prediction System (Ensemble Model) courtesy WxBell, shows a clustering of red “Ls” off of the Mid-Atlantic coastline on Wednesday, 20-March.  I will be watching this time frame closely to see if a coastal storm system develops and is able to phase with any upper-level energy.