GOES-13 Satellite Movie of the Derecho (the storm that left 3 million without power around DC)
News release:
NASA satellites examine powerful summer derecho
As a powerful summertime derecho moved from Illinois to the Mid-Atlantic states on June 29, expanding and bringing destruction with it, NASA and other satellites provided a look at various factors involved in the event, its progression and its aftermath.
According to NOAA's Storm Prediction Center web site, a derecho (pronounced "deh-REY-cho"
is a widespread, long-lived wind storm that is associated with a band of rapidly moving showers or thunderstorms. Damage from a derecho is usually in one direction along a relatively straight track. By definition an event is classified a derecho if the wind damage swath extends more than 240 miles (about 400 kilometers) and includes wind gusts of at least 58 mph (93 km/h) or greater along most of its length.
These storms are most common in the United States during the late spring and summer, with more than three quarters occurring between April and August. They either extend from the upper Mississippi Valley southeast into the Ohio Valley, or from the southern Plains northeast into the mid-Mississippi Valley....
More text at: http://www.eurekalert.org/pub_releases/2012-07/nsfc-nse070512.php
Video page:
http://www.eurekalert.org/multimedia/pub/45274.php?from=216265
