Alert archive / Iowa / Mesoscale Discussions in 2004

Mesoscale Discussion 357

April 17, 200436 counties in Iowa; 5 counties in Minnesota

The Storm Prediction Center issued this mesoscale discussion at Apr 17, 2004, 5:03 PM CDT for 36 counties in Iowa; 5 counties in Minnesota. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Apr 17, 2004, 5:03 PM CDT (22:03 UTC)
Expired: Apr 17, 2004, 7:30 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 41 counties

Boone County, IA, Buena Vista County, IA, Butler County, IA, Calhoun County, IA, Carroll County, IA, Cerro Gordo County, IA, Cherokee County, IA, Clay County, IA, Crawford County, IA, Dickinson County, IA, Emmet County, IA, Floyd County, IA, Franklin County, IA, Greene County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Humboldt County, IA, Ida County, IA, Kossuth County, IA, Lyon County, IA, Mitchell County, IA, Monona County, IA, O'Brien County, IA, Osceola County, IA, Palo Alto County, IA, Plymouth County, IA, Pocahontas County, IA, Sac County, IA, Sioux County, IA, Story County, IA, Webster County, IA, Winnebago County, IA, Woodbury County, IA, Worth County, IA, Wright County, IA, Faribault County, MN, Freeborn County, MN, Jackson County, MN, Martin County, MN, Nobles County, MN

The radar

The Des Moines radar (KDMX), 145 km from the middle of the area, began a volume at 22:06 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 77Apr 17, 7:45 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
Apr 16, 7:17 PM CDT	Mesoscale Discussion	SPC	Audubon, Black Hawk, Boone, Bremer, Buena Vista, Butler and 29 more	88 min
Apr 16, 9:45 PM CDT	Severe Thunderstorm Watch	SPC	Benton, Black Hawk, Buchanan, Cedar, Delaware, Grundy and 11 more	4 hr

Nearby

Mesoscale Discussions in Iowa, 2004 Mesoscale Discussions in Minnesota, 2004 Every mesoscale discussion in 2004

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.