Alert archive / Iowa / Mesoscale Discussions in 2011

Mesoscale Discussion 2101

September 2, 20116 counties in Illinois; 32 counties in Iowa; 5 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Sep 2, 2011, 11:56 PM CDT for 6 counties in Illinois; 32 counties in Iowa; 5 counties in Wisconsin. It was in force for 94 min.

The area

The outline as issued.

The facts

Issued: Sep 2, 2011, 11:56 PM CDT (04:56 UTC)
Expired: Sep 3, 2011, 1:30 AM CDT
In force: 94 min
Issued by: the Storm Prediction Center

All 43 counties

Benton County, IA, Black Hawk County, IA, Boone County, IA, Buchanan County, IA, Cedar County, IA, Clayton County, IA, Clinton County, IA, Dallas County, IA, Delaware County, IA, Dubuque County, IA, Greene County, IA, Grundy County, IA, Hamilton County, IA, Hardin County, IA, Iowa County, IA, Jackson County, IA, Jasper County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Linn County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Muscatine County, IA, Polk County, IA, Poweshiek County, IA, Scott County, IA, Story County, IA, Tama County, IA, Warren County, IA, Carroll County, IL, Jo Daviess County, IL, Ogle County, IL, Stephenson County, IL, Whiteside County, IL, Winnebago County, IL, Grant County, WI, Green County, WI, Iowa County, WI, Lafayette County, WI, Rock County, WI

The radar

The Des Moines radar (KDMX), 122 km from the middle of the area, began a volume at 04:56 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 825Sep 3, 12:50 AM 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
Sep 3, 12:48 AM CDT	Severe Thunderstorm Watch	SPC	Boone, Jo Daviess, McHenry, Stephenson, Winnebago	6 hr
Sep 3, 12:24 PM CDT	Mesoscale Discussion	SPC	Bureau, Cook, DeKalb, DuPage, Ford, Grundy and 13 more	66 min
Sep 3, 3:05 PM CDT	Severe Thunderstorm Watch	SPC	Bureau, Cook, DuPage, Ford, Fulton, Grundy and 23 more	7 hr
Sep 3, 5:02 PM CDT	Mesoscale Discussion	SPC	Bureau, Cook, DuPage, Ford, Fulton, Grundy and 23 more	58 min
Sep 2, 10:04 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Audubon, Benton, Black Hawk, Boone and 22 more	86 min
Sep 2, 10:23 PM CDT	Severe Thunderstorm Watch	SPC	Adair, Benton, Black Hawk, Boone, Buchanan, Cass and 26 more	6 hr
Sep 3, 3:40 AM CDT	Mesoscale Discussion	SPC	Dane, Green, Iowa, Jefferson, Kenosha, Lafayette and 6 more	95 min

Nearby

Mesoscale Discussions in Iowa, 2011 Mesoscale Discussions in Illinois, 2011 Mesoscale Discussions in Wisconsin, 2011 Every mesoscale discussion in 2011

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.