Alert archive / Illinois / Mesoscale Discussions in 2024

Mesoscale Discussion 939

May 24, 202421 counties in Illinois; Lake County, Indiana; 11 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at May 24, 2024, 4:46 PM CDT for 21 counties in Illinois; Lake County, Indiana; 11 counties in Wisconsin. It was in force for 119 min.

The area

The outline as issued.

The facts

Issued: May 24, 2024, 4:46 PM CDT (21:46 UTC)
Expired: May 24, 2024, 6:45 PM CDT
In force: 119 min
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch unlikely
Chance of a watch: 20%

All 33 counties

Boone County, IL, Bureau County, IL, Carroll County, IL, Cook County, IL, DeKalb County, IL, DuPage County, IL, Grundy County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Lake County, IL, LaSalle County, IL, Lee County, IL, Livingston County, IL, McHenry County, IL, Ogle County, IL, Putnam County, IL, Stephenson County, IL, Whiteside County, IL, Will County, IL, Winnebago County, IL, Lake County, IN, Dane County, WI, Dodge County, WI, Green County, WI, Jefferson County, WI, Kenosha County, WI, Milwaukee County, WI, Racine County, WI, Rock County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI

The radar

The Chicago radar (KLOT), 55 km from the middle of the area, began a volume at 21:47 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 24, 6:07 AM CDT	Severe Thunderstorm Watch	SPC	Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 33 more	9 hr
May 24, 8:44 AM CDT	Mesoscale Discussion	SPC	Boone, Bureau, Carroll, DeKalb, Jo Daviess, Kane and 9 more	2 hr
May 24, 11:57 AM CDT	Mesoscale Discussion	SPC	Adams, Brown, Calhoun, Cass, Greene, Hancock and 5 more	2 hr
May 24, 1:39 PM CDT	Mesoscale Discussion	SPC	Bond, Christian, Clark, Coles, Cumberland, Douglas and 12 more	2 hr
May 24, 2:39 PM CDT	Severe Thunderstorm Watch	SPC	Adams, Bond, Brown, Calhoun, Cass, Christian and 31 more	10 hr
May 24, 3:57 PM CDT	Mesoscale Discussion	SPC	Bond, Brown, Calhoun, Cass, Christian, Clay and 34 more	93 min
May 24, 6:19 PM CDT	Mesoscale Discussion	SPC	Bond, Calhoun, Christian, Clinton, Effingham, Fayette and 10 more	116 min
May 24, 3:19 PM CDT	Mesoscale Discussion	SPC	Boone, Carroll, Cass, Clinton, Elkhart, Fulton and 16 more	116 min

Nearby

Mesoscale Discussions in Illinois, 2024 Mesoscale Discussions in Wisconsin, 2024 Mesoscale Discussions in Indiana, 2024 Every mesoscale discussion in 2024

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.