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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 weakened considerably when the July 2011 Iowa-Illinois-Michigan-Ohio derecho sucked the instability and moisture from the storm over Lake Michigan. The derecho traveled more than 400 miles (640 km) and produced nine tornadoes in North Dakota and Western Minnesota. July 2011 Iowa-Illinois-Michigan-Ohio derecho: July 11, 2011 [32]
On July 18, Granada was in a tense atmosphere; the military governor, General Campins, condemned the uprising in Morocco, while Popular Front organizations demonstrated throughout the day. [31] Campins held a meeting at the civilian government with the local Republican authorities, telling them that he had full confidence in the officers under ...
June 29, 2012, is a difficult day for those in and around Washington, D.C., to forget. On that day, an intense line of extremely gusty thunderstorms taught millions of people a new word: derecho.
As the derecho moved through Ohio, a second storm developed in Iowa and tracked into northern Illinois. The earlier derecho had used up most of the convective energy in the atmosphere, so this second storm did not become another derecho. Nonetheless, a small MCS with a bow echo developed and became severe as it moved along this track.
The essential cause of a derecho is a storm that produces many downbursts which eventually merge into a single windstream. The type of MSC that can produce these multiple downbursts is one where there is little shear through the atmosphere. With shear, the result is tornadic. Without, a derecho. Tmangray 22:16, 4 July 2012 (UTC) MSC?
On December 15, 2021, a rapidly-deepening low-pressure area contributed to a historic expanse of inclement weather across the Great Plains and Midwestern United States, resulting in an unprecedented [5] December derecho and tornado outbreak across portions of the Northern United States, a region normally affected by snow and cold weather during this time of year.
The May 2022 Canadian derecho was a high-impact derecho [5] event that affected the Quebec City-Windsor Corridor, Canada's most densely populated region, on May 21, 2022.. Described by meteorologists as a historic derecho and one of the most impactful thunderstorms in Canadian history, [6] [7] winds up to 190 km/h (120 mph) as well as around four tornadoes caused widespread and extensive ...