Breaking: Squall Line of Showers Rapidly Approaching DC Area with Damaging Winds in Excess of 60mph

 Breaking: Incoming Squall Line

A line of showers and thunderstorms (image below courtesy pivotal weather) is currently racing southeast out of the Alleghenies mountains.

This squall line is the secondary cold front getting ready to race across the DC area between 4 and 6PM (height of rush hour) with the potential for widespread wind gusts in excess of 60 mph!

If you haven’t left for home yet, you might want to consider as these showers could cause tree branches to fall as well as power lines … snarling the afternoon rush hour especially in wooded residential areas.

High Resolution HRRR model shows damaging winds with line of showers….

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Strong Cold Front to Usher in Damaging Winds Friday

Scattered Showers and Storms for Evening Rush, Squall Line Likely Overnight, High Winds Friday

A strong cold front will approach the mountains of West Virginia this afternoon touching off isolated showers and thunderstorms across the DC Metropolitan Area during the afternoon rush hour.

Notice the squall line in the above image (courtesy pivotal weather) pushing through the DC Region between 11pm and 2am.  This line of storms will be accompanied by the actual cold front and will likely contain gusty winds.

High Winds Friday, Much Colder

High winds will develop on Friday afternoon as mixing in the atmosphere increases. Sustained winds of 25 to 35 mph with gusts over 55 mph are likely across the immediate Washington Area. I wouldn’t be surprised to see High Wind Warnings and Wind Advisories raised for much of northern Virginia, DC and Maryland.

Timing the Gusty Winds on Friday

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Damaging Wind Gusts Sunday Evening through Monday Afternoon

A powerful cold front will cross the Washington Region this afternoon ushering in gusty winds in its wake.  Winds could occasionally gust over 55 MPH in locations across the higher elevations of the Potomac Highlands, Catoctins, Blue Ridge and near/across the Chesapeake Bay.

The image above (courtesy weathermodels.com) from the North American Model (NAM) shows potential peak wind gusts from 7pm Sunday through 5pm Monday.  The gusty winds coupled with saturated soil from the recent soaking rain increase the risk of downed trees.