Nearly 2 million people are under severe weather alerts as a line of dangerous thunderstorms races through the Midwest.
A life-threatening severe weather outbreak is unfolding across the Midwest, with severe thunderstorms producing hundreds of damage reports across the region, and the FOX Weather Center calling the event a derecho.
Millions of Americans are being impacted by these severe thunderstorms that are producing large hail, damaging wind gusts and possible tornadoes. Destructive winds were reported in half a dozen states, with areas in the Ohio and Tennessee valleys under threat Thursday evening.
The first video was shot in the town of Charleston, while the second video was shot in nearby Mattoon. June 29, 2023.
A spotter reported a gust of 90 mph in Adrian, Illinois, just after 11 a.m. CDT from their home weather station, with an estimated gust of 100 mph, according to a National Weather Service storm report. Nearby, another spotter in Adrian reported a full-size barn was destroyed, and full-size trees were blown to the east.
The Springfield, Illinois, Fire Department warned residents to stay in their homes as wind damage was reported throughout the area, with trees down.
The Indianapolis International Airport reported a wind gust of 70 mph as the line of storms moved through.
Power outages mount
As of Thursday evening, more than 500,000 power outages were reported from Iowa through Tennessee, with Illinois being the hardest hit with more than 200,000 outages being reported.
CenterPoint Energy, a utility provider for many communities in the Hoosier State, said many of its crews were assessing damages but warned that estimated restoration times may be unavailable due to the storms.
(FOX Weather)
Thursday's severe weather threat
The SPC has issued Severe Thunderstorm Watches for portions of the Midwest, Ohio Valley and central Tennessee that are in effect until Thursday afternoon.
Swaths of damaging winds of 60-80 mph, large hail and a couple of tornadoes are expected Thursday.
Additionally, a Tornado Watch has been issued for eastern Wyoming, western Nebraska and Colorado through 9 p.m. MDT.
The watch box does include the Denver metro for the threat of supercells that will develop during the evening.
(FOX Weather)
Thursday's severe weather outbreak classified as a derecho
A large ridge of high pressure parked across the central U.S. has storms moving along its periphery, laying the foundation for the derecho. This phenomenon is frequently referred to as the "ring of fire."
For meteorologists to classify a system as a derecho, a swath of straight-line wind damage must cover a distance of at least 400 miles and include wind gusts over 58 mph along most of its path, according to NOAA's Storm Prediction Center.
Thursday's event is believed to have started around Omaha, Nebraska, and pushed more than 500 miles into the Ohio Valley, producing damaging winds along the way.
The SPC received more than 500 reports of severe weather, with many damaging wind gusts reported in Illinois, Missouri and Indiana.
Meteorologist Andrew Pritchard tracked the storms through the Prairie State and said damage was widespread but not as extensive as the infamous August 2020 Midwest derecho.
"This was not necessarily the same thing that we saw in August 2020, where we had the derecho show come through Iowa and Illinois," Pritchard said. "That was in an entire league of its own where we had those, in some cases, 100-plus-mph winds that lasted for half an hour or more and just really wears down the crops, the trees, and the infrastructure there … Now, the significant winds that I experienced in Farmer City and that we've seen across a lot of central Illinois, they've been much more quick passing."
Pritchard was hopeful that in many cases where crops are laying on the ground now, they'll be able to snap back to life with the help of some calm weather days.
Satellite animation of the derecho moving through the Midwest on June 29, 2023
(CIRA/NOAA / FOX Weather)
Good news from the derecho?
Communities that saw gusty winds and rainfall associated with the derecho event also experienced a clearing of the air from smoke created by Candaian wildfires.
For the last two days, the Great Lakes region was plagued by smoke-filled and poor air qualities with high Air Quality Index values.
Juliet, Illinois, started the day with an AQI value of over 200, which was considered very unhealthy but by the afternoon the value had fallen to around 100.
Indianapolis reported a drop of nearly 200 once the thunderstorms pushed through the Hoosier State.
Derecho versus smoke in the Midwest
(FOX Weather)
Communities that did not see relief in the form of rain or gusty winds were stuck with smoke-filled skies well into the evening.
Air observations were considered to be very unhealthy across many communities in western Pennsylvania on Thursday evening.
Friday's severe weather threat
There is a risk of severe thunderstorms over portions of the Ohio and Tennessee valleys and the central and southern Appalachians on Friday.
Similar to Thursday's event thunderstorms will develop over the Plains and work eastward putting cities like Kansas City, Missouri; Springfield, Illinois; Louisville, Kentucky; and Knoxville, Tennessee at risk.
According to the FOX Forecast Center, damaging wind gusts and large hail will be the greatest threat from Friday's storms, which could last into the late evening across parts the Appalachians.
(FOX Weather)
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June 29, 2023 at 10:49PM
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Chicago, Midwest under threat of severe weather as 'ring-of-fire' pattern fuels stormy stretch - Fox Weather
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