When was the last derecho storm to form in the United States?
A long-lived line of severe storms known as a “derecho” produced severe wind damage across portions of South Dakota, Nebraska, Iowa, Illinois, Wisconsin, Indiana, Michigan, and Ohio on Monday, August 10, 2020.
How many people died in the derecho storm?
Packing gusts as high as 91 mph near Fort Wayne, Ind., and 79 mph at Reston, Va., the derecho and related severe weather inflicted $3.3 billion in damage (in 2020 dollars) and led to at least 42 direct and indirect deaths, with power knocked out to more than 4 million customers.
What states did derecho storm hit?
On August 10–11, 2020, a powerful derecho swept across the Midwestern United States — predominantly eastern Nebraska, Iowa, Illinois, Wisconsin, and Indiana….August 2020 Midwest derecho.
| Flattened corn field near Adel, Iowa on evening of August 19, 2020. | |
|---|---|
| August 10 radar composite from 8am to 7pm CDT | |
| Largest hail | 2 in (5.1 cm) (Freeport, Illinois) |
What caused the derecho storm?
What causes a derecho? It all has to do with something called a downburst. When the wet air in a thunderstorm meets the drier air surrounding it, the water in the air evaporates. When water evaporates, it cools the air around it.
Is a derecho worse than a tornado?
Derecho damage A derecho can be as destructive as a tornado, but it is destructive in a decidedly different way. The strong, swirling winds of a tornado will cause debris to fall every which way, while a derecho’s straight-line winds are similar to a regular thunderstorm—but stronger.
Where did the derecho hit on June 29, 2012?
On June 29, 2012, a derecho of historic proportions struck the Ohio Valley and Mid-Atlantic states. The derecho traveled for 700 miles, impacting 10 states and Washington, D.C. The hardest hit states were Ohio, West Virginia, Virginia, and Maryland, as well as Washington, D.C.
When was the most destructive derecho in North America?
June 2012 North American derecho. The June 2012 Mid-Atlantic and Midwest derecho was one of the most destructive and deadly fast-moving severe thunderstorm complexes in North American history.
When did the thunderstorms start in June 2012?
LOADING… During the afternoon and evening of Friday June 29, 2012, an intense, long-lived line of thunderstorms raced eastward at nearly 60 mph from the Midwest to the Mid-Atlantic coast.
When do damaging winds occur in a derecho?
The first area of damaging winds is associated with the gust front. This front, which is on the leading edge of the derecho, typically races out ahead of the main part of the derecho. Damaging winds from passage of the gust front can occur but usually only for a brief time (less than 1 minute).