Alert archive / Illinois / Mesoscale Discussions in 2008

Mesoscale Discussion 1978

July 31, 200818 counties in Illinois; 5 counties in Indiana; 5 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Jul 31, 2008, 1:51 PM CDT for 18 counties in Illinois; 5 counties in Indiana; 5 counties in Wisconsin. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued: Jul 31, 2008, 1:51 PM CDT (18:51 UTC)
Expired: Jul 31, 2008, 3:15 PM CDT
In force: 84 min
Issued by: the Storm Prediction Center

All 28 counties

Boone County, IL, Cook County, IL, DeKalb County, IL, DuPage County, IL, Ford County, IL, Grundy County, IL, Iroquois 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, Will County, IL, Winnebago County, IL, Benton County, IN, Jasper County, IN, Lake County, IN, Newton County, IN, Porter County, IN, Dane County, WI, Green County, WI, Kenosha County, WI, Rock County, WI, Walworth County, WI

The radar

The Chicago radar (KLOT), 21 km from the middle of the area, began a volume at 18:54 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, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 30, 7:33 PM CDT	Mesoscale Discussion	SPC	Alexander, Clay, Clinton, Edwards, Franklin, Gallatin and 22 more	87 min
Jul 31, 7:18 AM CDT	Severe Thunderstorm Watch	SPC	Carroll, Jo Daviess, Stephenson	6 hr
Jul 31, 11:59 AM CDT	Severe Thunderstorm Watch	SPC	Boone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more	5 hr
Jul 31, 3:51 PM CDT	Mesoscale Discussion	SPC	Boone, Bureau, Carroll, Champaign, Cook, DeKalb and 25 more	84 min
Jul 31, 6:30 PM CDT	Mesoscale Discussion	SPC	Henderson, Mercer, Rock Island	90 min
Jul 31, 6:50 AM CDT	Mesoscale Discussion	SPC	Buffalo, Crawford, Grant, Iowa, La Crosse, Pierce and 3 more	85 min
Jul 31, 8:03 AM CDT	Mesoscale Discussion	SPC	Buffalo, Crawford, Grant, Pepin, Pierce	87 min
Jul 31, 10:28 AM CDT	Mesoscale Discussion	SPC	Buffalo, Crawford, Grant, Pepin, Pierce	92 min

Nearby

Mesoscale Discussions in Illinois, 2008 Mesoscale Discussions in Indiana, 2008 Mesoscale Discussions in Wisconsin, 2008 Every mesoscale discussion in 2008

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.