Alert archive / Illinois / Mesoscale Discussions in 2003

Mesoscale Discussion 2043

August 1, 200326 counties in Illinois; 4 counties in Iowa

The Storm Prediction Center issued this mesoscale discussion at Aug 1, 2003, 10:59 AM CDT for 26 counties in Illinois; 4 counties in Iowa. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Aug 1, 2003, 10:59 AM CDT (15:59 UTC)
Expired: Aug 1, 2003, 1:00 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 30 counties

Des Moines County, IA, Henry County, IA, Louisa County, IA, Muscatine County, IA, Bureau County, IL, DeKalb County, IL, Ford County, IL, Fulton County, IL, Grundy County, IL, Henderson County, IL, Henry County, IL, Iroquois County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Knox County, IL, LaSalle County, IL, Lee County, IL, Livingston County, IL, Marshall County, IL, McLean County, IL, Mercer County, IL, Peoria County, IL, Putnam County, IL, Rock Island County, IL, Stark County, IL, Tazewell County, IL, Warren County, IL, Will County, IL, Woodford County, IL

The radar

The Quad Cities radar (KDVN), 79 km from the middle of the area, began a volume at 16:01 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 824Aug 1, 2:00 PM CDT

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 31, 8:19 PM CDT	Mesoscale Discussion	SPC	Boone, Carroll, Jo Daviess, Ogle, Stephenson, Winnebago	116 min
Aug 1, 2:00 PM CDT	Severe Thunderstorm Watch	SPC	Adams, Boone, Brown, Bureau, Cass, DeKalb and 35 more	6 hr
Aug 1, 2:58 PM CDT	Mesoscale Discussion	SPC	Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 13 more	2 hr
Aug 1, 3:20 PM CDT	Severe Thunderstorm Watch	SPC	Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 13 more	6 hr
Aug 1, 5:49 PM CDT	Mesoscale Discussion	SPC	Boone, Brown, Bureau, Cass, DeKalb, Fulton and 29 more	86 min
Jul 31, 11:14 PM CDT	Mesoscale Discussion	SPC	Benton, Black Hawk, Boone, Bremer, Buchanan, Butler and 13 more	2 hr

Nearby

Mesoscale Discussions in Illinois, 2003 Mesoscale Discussions in Iowa, 2003 Every mesoscale discussion in 2003

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.