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A shelf cloud along the leading edge of a derecho in Minnesota A damage caused by a derecho in Barga, Italy. A derecho (/ ˈ d ɛ r ə tʃ oʊ /, from Spanish: derecho [deˈɾetʃo], 'straight') [1] is a widespread, long-lived, straight-line wind storm that is associated with a fast-moving group of severe thunderstorms known as a mesoscale ...
The derecho traveled more than 500 miles (800 km) before moving off the coast of Texas and Louisiana into the Gulf of Mexico and produced winds up to 78 mph (126 km/h) with hail up to 3.75 inches (9.5 cm) in diameter and a few tornadoes including a short-lived EF2 tornado north of Hochatown, Oklahoma that tossed two barges over 100 yd (91 m), a ...
The derecho maintained vigor as it continued eastward into Louisiana during the evening hours, fueled by continued transport of warm air from the south. [20] Isolated hurricane-force wind gusts were recorded, including an 84 mph (135 km/h) gust at the New Orleans Lakefront Airport .
The June 2012 Mid-Atlantic and Midwest derecho was one of the deadliest and most destructive fast-moving severe thunderstorm complexes in North American history. The progressive derecho tracked across a large section of the Midwestern United States and across the central Appalachians into the mid-Atlantic states on the afternoon and evening of ...
1991 West Virginia derecho; 1993 Storm of the Century; New York State Labor Day derechos; 2003 Mid-south derecho; 2004 Roanoke tornado; Tornado outbreak sequence of March 9–13, 2006; Tornado outbreak of April 2, 2006; Heat wave of 2006 derecho series; Tornado outbreak of October 17–19, 2007; 2009 Super Derecho; Derecho and tornado outbreak ...
The derecho began as a cluster of scattered thunderstorms that had formed during the previous night over south-central South Dakota. These storms tracked east along the South Dakota– Nebraska border and became better organized and coalesced, producing hail with diameters between 1–2 in (25–51 mm) and wind gusts between 60–70 mph (97 ...
Map of the 1991 West Virginia Derecho (courtesy of NOAA) The 1991 West Virginia derecho was a serial derecho (storm) that started in Arkansas in the early morning hours of April 9, 1991, and made its way northeast, finally dying out over Pennsylvania late that evening. It was the worst severe weather event for West Virginia since the 1974 Super ...
The June 2020 derecho was the first to impact the Pennsylvania–New Jersey region since June 2012, when a storm moved east from Iowa into southern Pennsylvania. [21] Four fatalities were associated with the derecho, making it the deadliest such storm in the region since 1950. [6]