Power outages in Washington, DC area (satellite view)

power-outages-in-washington-dc-area-satellite-view

Extensive power outages in Washington, DC and Baltimore are visible in these images bellow posted by Earth Observatory on its website. Clouds obscure the lights of Philadelphia and other areas north and east of Baltimore. Of particular interest is the loss of light to the north and west of Washington, DC along the 270 and 66 interstate highways and Maryland route 267.

These before and after images from NASA’s Suomi National Polar-orbiting Partnership satellite show the power outages in the clear skies over Washington, DC and Baltimore that occurred as a result of a rare, fast-moving thunderstorm system on Friday, June 29th.

Known as a “derecho,” the storm combined intense lightning and rain with hurricane-force winds that were upwards of 60 miles per hour (~96.5 kilometers per hour). It killed 22 people and caused some 4.3 million households to lose power for days.

Derecho raced from west of Chicago across Illinois, Indiana, Ohio, West Virginia, Virginia, Maryland, and Washington, D.C.

According to the National Weather Service, the gigantic windstorms of a derecho are as powerful as tornadoes, but the winds don’t twist, instead driving in a straight line. To be classified as a derecho, the swath of wind damage must extend more than 240 miles and the storms are powered by hot, humid weather.

These images were taken with the day/night band of S-NPP’s Visible Infrared Imaging Radiometer Suite (VIIRS). 

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