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A shelf cloud along the leading edge of a derecho in Minnesota 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 ...
A second derecho formed right behind the first one and again brought damaging winds across Northern Illinois. It hit Chicago just 3 hours after the first one bringing 80 mph winds. It continued into Northern Indiana bringing 100 mph winds to Lake County before it began to weaken. It dissipated over Ohio at 4 am EDT. Two people were killed in ...
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 ...
An intense thunderstorm complex known as a derecho developed over the central United States on Monday, causing significant damage and widespread power outages as it blitzed eastward covering a ...
Intense thunderstorms packing wind gusts over 100 mph blasted across the Midwest Monday afternoon into Monday night, snapping trees and damaging buildings during an extreme weather event known as ...
Downbursts can occur over large areas. In the extreme case, a series of continuing downbursts results in a derecho , which covers huge areas of more than 320 km (200 mi) wide and over 1,600 km (1,000 mi) long, persisting for 12 hours or more, and which is associated with some of the most intense straight-line winds.
Tornadoes can occur along waves within a line echo wave pattern (LEWP), where mesoscale low-pressure areas are present. Some bow echoes can grow to become derechos as they move swiftly across a large area. On the back edge of the rainband associated with mature squall lines, a wake low can be present, on very rare occasions associated with a ...
A gust of 65 mph (102 km/h) was reported at the automatic station of Angliers. There was also a tremendous amount of lightning associated with this derecho, with around 6,000 lightning strikes per hour. Another person in this derecho was killed at Val-des-Lacs (V on the map) when a tree fell on the victim. A woman was injured when a tree ...