Alert archive / Illinois / Mesoscale Discussions in 2022

Mesoscale Discussion 993

May 31, 202220 counties in Illinois; 11 counties in Iowa; 11 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at May 31, 2022, 6:22 PM CDT for 20 counties in Illinois; 11 counties in Iowa; 11 counties in Missouri. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued: May 31, 2022, 6:22 PM CDT (23:22 UTC)
Expired: May 31, 2022, 7:45 PM CDT
In force: 83 min
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch possible
Chance of a watch: 40%

All 42 counties

Clinton County, IA, Davis County, IA, Des Moines County, IA, Henry County, IA, Jefferson County, IA, Lee County, IA, Louisa County, IA, Muscatine County, IA, Scott County, IA, Van Buren County, IA, Washington County, IA, Adams County, IL, Brown County, IL, Bureau County, IL, Carroll County, IL, Fulton County, IL, Hancock County, IL, Henderson County, IL, Henry County, IL, Knox County, IL, Lee County, IL, McDonough County, IL, Mercer County, IL, Ogle County, IL, Peoria County, IL, Pike County, IL, Rock Island County, IL, Schuyler County, IL, Stark County, IL, Warren County, IL, Whiteside County, IL, Adair County, MO, Clark County, MO, Knox County, MO, Lewis County, MO, Macon County, MO, Marion County, MO, Monroe County, MO, Ralls County, MO, Schuyler County, MO, Scotland County, MO, Shelby County, MO

The radar

The Quad Cities radar (KDVN), 92 km from the middle of the area, began a volume at 23:23 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 31, 3:40 PM CDT	Mesoscale Discussion	SPC	Adams, Brown, Bureau, Calhoun, Cass, Cook and 40 more	2 hr
May 30, 7:06 PM CDT	Severe Thunderstorm Watch	SPC	Chickasaw, Floyd, Howard, Mitchell	7 hr
May 30, 7:30 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Audubon, Boone, Calhoun, Carroll and 29 more	90 min
May 30, 9:39 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Audubon, Boone, Cass, Clarke and 15 more	66 min
May 30, 9:54 PM CDT	Severe Thunderstorm Watch	SPC	Adair, Adams, Audubon, Black Hawk, Boone, Bremer and 36 more	6 hr
May 30, 11:27 PM CDT	Mesoscale Discussion	SPC	Cerro Gordo, Chickasaw, Floyd, Howard, Mitchell, Winneshiek and 1 more	63 min
May 31, 1:22 AM CDT	Mesoscale Discussion	SPC	Andrew, Buchanan, Caldwell, Cass, Clay, Clinton and 7 more	83 min
May 31, 2:44 PM CDT	Mesoscale Discussion	SPC	Barry, Barton, Bates, Benton, Camden, Cedar and 14 more	2 hr

Nearby

Mesoscale Discussions in Illinois, 2022 Mesoscale Discussions in Iowa, 2022 Mesoscale Discussions in Missouri, 2022 Every mesoscale discussion in 2022

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.