Squall line will deliver 1-2″ of heavy rain Sunday evening

A powerful cold front will push through the Washington Area on Sunday evening. A Squall Line (strong line of thunderstorms with very heavy rain and gusty winds) will likely be accompanied with the passage of the cold front.

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Temperature Roller Coaster Alert for Sunday

A backdoor cold front will slide through the Washington area on Sunday morning.  A backdoor cold front is given the term “backdoor” because the cooler air mass moves from northeast to southwest, off of the cold, waters of the Atlantic Ocean.  Typically cooler air masses arrive from the north and west and push south and eastward.

Check out the animation below of surface temperatures plummeting during the morning hours on Sunday. The Fredericksburg Area and lower-southern Maryland may be the only locations that can hold onto the warmth before the cold front slides through our area from the west on Sunday evening.