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As the derecho failed to weaken over the mountains, the moderate risk was expanded eastward by the SPC at 9:00 p.m. EDT (0100 UTC) into the mid-Atlantic region. [10] At 10:10 p.m., the SPC issued the final severe thunderstorm watch for the derecho for all of Delaware , the remainder of Maryland, the remainder of eastern Virginia, southern New ...
The system was unique as surface dewpoints across the impacted region were in the 40s and low 50s, much lower than the typical high 60s and low 70s dewpoints seen during derecho events in the eastern US. [10] Heat wave of 1995 derecho series: July 11–15, 1995: 4 derechos occurred over 4 consecutive nights.
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 ...
An intense derecho -- a rapidly-moving thunderstorm complex that produces widespread wind damage -- cut power to nearly 1 million households and caused 11 deaths in the Canadian provinces of ...
The National Weather Service confirmed at least 21 tornadoes impacted four states in the central US on December 15, during an unprecedented storm that brought weather warnings to some 100 million ...
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At least seven people were killed by the storms, dubbed the Houston derecho by the National Weather Service, [7] which brought winds up to 100 miles per hour (160 km/h) along with four tornadoes. [ 8 ] [ 9 ] [ 10 ]
An early report from climatologist David Robinson inferred that the storm had traveled 350 miles (560 km) in 5 + 1 ⁄ 2 hours, which would have given it an average speed of 65 mph (105 km/h). [10] Derecho storms are also known for the characteristic bow-like shape of their radar profile [11] The SPC confirmed on the afternoon of June 3 that ...