Alert archive / Illinois / Mesoscale Discussions in 2018

Mesoscale Discussion 1660

November 25, 201816 counties in Illinois; 9 counties in Iowa

The Storm Prediction Center issued this mesoscale discussion at Nov 25, 2018, 11:54 AM CST for 16 counties in Illinois; 9 counties in Iowa. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Nov 25, 2018, 11:54 AM CST (17:54 UTC)
Expired: Nov 25, 2018, 6:00 PM CST
In force: 6 hr
Issued by: the Storm Prediction Center

All 25 counties

Cedar County, IA, Clinton County, IA, Iowa County, IA, Jackson County, IA, Johnson County, IA, Louisa County, IA, Muscatine County, IA, Scott County, IA, Washington County, IA, Boone County, IL, Bureau County, IL, Carroll County, IL, Cook County, IL, DeKalb County, IL, DuPage County, IL, Henry County, IL, Kane County, IL, Kendall County, IL, Lake County, IL, Lee County, IL, McHenry County, IL, Ogle County, IL, Rock Island County, IL, Whiteside County, IL, Winnebago County, IL

The radar

The Quad Cities radar (KDVN), 33 km from the middle of the area, began a volume at 17:54 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
Nov 25, 3:57 PM CST	Mesoscale Discussion	SPC	Adams, Brown, Cass, Fulton, Hancock, Henderson and 12 more	4 hr
Nov 25, 4:36 PM CST	Mesoscale Discussion	SPC	Calhoun, Greene, Jersey, Macoupin, Madison, Montgomery and 2 more	84 min
Nov 25, 3:54 AM CST	Mesoscale Discussion	SPC	Adams, Clarke, Decatur, Fremont, Lucas, Marion and 8 more	6 hr
Nov 25, 10:59 AM CST	Mesoscale Discussion	SPC	Adams, Appanoose, Clarke, Davis, Decatur, Fremont and 9 more	5 hr

Nearby

Mesoscale Discussions in Illinois, 2018 Mesoscale Discussions in Iowa, 2018 Every mesoscale discussion in 2018

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.