Alert archive / Illinois / Mesoscale Discussions in 2003

Mesoscale Discussion 2399

September 23, 200317 counties in Illinois; Benton County, Lake County, Newton County, Indiana

The Storm Prediction Center issued this mesoscale discussion at Sep 23, 2003, 11:41 PM CDT for 17 counties in Illinois; Benton County, Lake County, Newton County, Indiana. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Sep 23, 2003, 11:41 PM CDT (04:41 UTC)
Expired: Sep 24, 2003, 1:45 AM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

Counties Bureau County, IL, DeKalb County, IL, DuPage County, IL, Ford County, IL, Grundy County, IL, Iroquois County, IL, Kankakee County, IL, Kendall County, IL, LaSalle County, IL, Lee County, IL, Livingston County, IL, Marshall County, IL, Ogle County, IL, Putnam County, IL, Tazewell County, IL, Will County, IL, Woodford County, IL, Benton County, IN, Lake County, IN, Newton County, IN

The radar

The Chicago radar (KLOT), 78 km from the middle of the area, began a volume at 04:45 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
Sep 24, 12:41 PM CDT	Mesoscale Discussion	SPC	Bond, Cass, Champaign, Christian, Clinton, Coles and 40 more	2 hr
Sep 24, 3:26 PM CDT	Mesoscale Discussion	SPC	Bond, Champaign, Christian, Clark, Clay, Clinton and 33 more	94 min
Sep 24, 1:20 PM CDT	Severe Thunderstorm Watch	SPC	Adams, Allen, Cass, DeKalb, Elkhart, Fulton and 17 more	7 hr
Sep 24, 2:58 PM CDT	Mesoscale Discussion	SPC	Elkhart, LaGrange, LaPorte, Saint Joseph, Steuben	62 min
Sep 24, 5:37 PM CDT	Mesoscale Discussion	SPC	Allen, Cass, DeKalb, Elkhart, Fulton, Huntington and 16 more	83 min

Nearby

Mesoscale Discussions in Illinois, 2003 Mesoscale Discussions in Indiana, 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.