The worst icing was in Carroll, Cass, Howard & Miami counties, where accretions of 1.75" were reported. On the evening of Friday, July 14, 1995, thunderstorms producing severe weather were occurring over Upper Michigan and adjacent portions of Ontario, Canada near Sault Saint Marie. Massachusetts 3. In many areas affected by the system, the severe gusts lasted 10 to 20 minutes before subsiding. The August derecho grew from a cluster of thunderstorms ranging from southeast South Dakota to Ohio. Cedar Rapids got the brunt of it, where more than 100,000 people were still without power for more than a week after the storm. By late evening the storms had evolved into a bowing line just northwest of the Mackinac Bridge in Michigan. During the late afternoon of Wednesday, July 12, 1995, thunderstorms formed over southeast Montana and began producing winds that damaged homes and barns and blew over a mobile home. As the day progressed, a serial derecho developed as the original bow echo raced northeast and expanded in scale, while an additional bow echo formed farther north. Two people were killed and 11 others were injured, mostly due to trees falling on homes or vehicles. These are likely straight-line winds that cause the damage and can be as bad, if not worse than tornado damage. The May 8, 2009 "Super Derecho" was one of the most intense and unusual derechos ever observed. The wind storm produced significant and often continuous damage over a broad swath from the high plains of western Kansas to the foothills of the Appalachians in eastern Kentucky. Dear Tom,I never heard the term derecho before Monday’s violent storms. In the worst derecho events, sometimes relief workers from other states are needed to aid in these efforts. Of these reports, 95 came from Colorado – by far the most severe wind reports ever from a single thunderstorm system. During the early morning of Tuesday, July 22, 2003, a derecho formed over north central Arkansas and moved rapidly east-southeast, reaching northern Alabama by mid-morning. (May 8, 2009 Super derecho details). Even in northern Jasper County, the 1.40" of liquid only added up to 0.1" of sleet & snow before falling as mainly freezing rain. On the evening of Monday, August 10, a weather complex known as a “derecho” sent intense winds and thunderstorms over a … The Commercial Appeal staff photo by Alan Spearman, used with permission. The destructive storms, with winds over 75 mph, are often compared to inland hurricanes. While the benefits of living in Texas far outweigh the cons, we do suffer from natural disasters quite a bit – a consequence of being in a tropical climate AND right on the coast. And now a derecho. The derecho caused notably high wind speeds of up to 126 mph recorded in Iowa, with post-damage assessments of up to 140 mph in some places. It became one of the most damaging North American derechos in history, destroying over 400 homes and … A mesoscale convective system on August 10th, 2020 producing derecho winds. The derecho began in South Dakota, tore through Iowa and slowed to a stop in Ohio, traveling 770 miles in 14 hours. The NCEI, which is part of the National Oceanic and Atmospheric Administration, says the current estimated total cost for the destructive line of storms stands around $7.5 billion. Author: Local 5 News August derecho named among top 5 worst severe storms in the US since 1980 The current estimated cost of the storm is around $7.5 billion, according to federal officials. Between 6 and 7 AM CDT Tuesday, the derecho passed through the Memphis, Tennessee metropolitan area, producing some of the most intense winds during its existence. However, ice accretion of up to 0.5" occurred viewing area-wide. As the system approached Fargo, ND during the early morning of July 13th, it became a well-defined bow echo storm with measured winds of 91 mph (146 km/h) at the Fargo airport. St. Patrick’s Day Floods, 1936 ... And was it not the WEIRDEST thing ever? Before I get into what they are, let’s discuss the current meteorological circumstances involving this derecho. On Tuesday, November 9, 1965 there was a major disruption in the power supply for the Northeast that left over 30 million people without power.This blackout lasted up to 13 hours and affected many areas of the Northeastern United States including: 1. Please Contact Us. Derecho is a long line of convective storms that produce widespread damaging wind gusts. New York 6. Animation showing the development and evolution of the 6-7 June 2020 western derecho. Many thousands of trees were damaged or blown down. Winds along this band exceeded 80 to 100 mph (129 to 161 km/h) at some points. ("The West Virginia Derecho of 1991" details). 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