Quick Moving Snowstorm Tomorrow Night


Winter continues to stick around as we head into early March. A coastal low will develop tomorrow evening, bringing plowable snow to the I-95 corridor. While this season has been besieged by multiple complex storm systems, tomorrow’s storm is a fairly standard nor’easter from a meteorological perspective.

Currently, our storm is moving across the Rockies into the Plains. By tomorrow morning, a large swath of snow will develop over the midwest. As the storm moves east, it will intensify and move off the coast. In the southeast, there is a high risk of severe storms. Areas north will be impacted by snow (rain in coastal regions):

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Without significant blocking to the north, this storm is a fast mover. Precipitation will commence in the Delaware Valley by 5 PM tomorrow and end by 3 AM Monday morning. The GIF below illustrates the storm’s quickness:

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In areas south of I-95, precipitation will mainly fall as a cold, nasty rain. Philadelphia will likely be a battleground between rain and snow. Areas north and west of the city should stay as all snow for a majority of the storm:

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Impacts

Monday’s rush hour will be impacted in the northern and western suburbs. When most people wake up on Monday morning, 4-6 inches of snow will be on the ground. Frigid air will follow the storm, which will slow down any melting until late next week.

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Next Week

One last arctic blast will plunge temperatures 20 degrees below normal next week. Unseasonably cold weather will continue into next weekend and into mid-March. Based on long-range model runs, we should return to normalcy by the end of the month.