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However, derechos can occur at any time of the year. They are equally likely during day and night times. Various studies since the 1980s have shed light on the physical processes responsible for the production of widespread damaging winds by thunderstorms.
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 ...
Derecho over northwestern Lower Michigan, causing damage to trees at the Sleeping Bear Dunes National Lakeshore and cutting off power to many residents of Traverse City; also impacting the penultimate night of the Traverse City Film Festival, winds of 100 mph (160 km/h) occurred around Sleeping Bear Dunes and Glen Arbor, the largest hailstone ...
A derecho is a widespread thunderstorm complex, but its severity, distance and duration make this weather phenomenon stand out from the more typical spring and summer storms. The term "derecho" is ...
A derecho is a long-lived complex of thunderstorms that produces widespread wind gusts over 58 mph over an area at least 400 miles long. The Midwest is one of the areas of the United States where ...
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.
Regardless of whether a derecho occurs, by next week, rounds of gusty, drenching and potentially severe thunderstorms will dive from near the Canada border in the Central states to the Great Lakes ...
A warm weather phenomenon, derechos occur mostly in summer, especially June and July in the Northern Hemisphere. They can occur at any time of the year and occur as frequently at night as in the daylight hours. — Preceding unsigned comment added by JKshaw (talk • contribs) 04:03, 3 July 2012 (UTC)