Alert archive / Iowa / Mesoscale Discussions in 2013

Mesoscale Discussion 580

April 29, 201345 counties in Iowa; 5 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Apr 29, 2013, 7:26 PM CDT for 45 counties in Iowa; 5 counties in Nebraska. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Apr 29, 2013, 7:26 PM CDT (00:26 UTC)
Expired: Apr 29, 2013, 10:00 PM CDT
In force: 3 hr
Issued by: the Storm Prediction Center
Chance of a watch: 40%

All 50 counties

Adair County, IA, Adams County, IA, Audubon County, IA, Black Hawk County, IA, Boone County, IA, Bremer County, IA, Buena Vista County, IA, Butler County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Cerro Gordo County, IA, Crawford County, IA, Dallas County, IA, Floyd County, IA, Franklin County, IA, Fremont County, IA, Greene County, IA, Grundy County, IA, Guthrie County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Harrison County, IA, Humboldt County, IA, Ida County, IA, Jasper County, IA, Kossuth County, IA, Madison County, IA, Marshall County, IA, Mills County, IA, Monona County, IA, Montgomery County, IA, Palo Alto County, IA, Pocahontas County, IA, Polk County, IA, Pottawattamie County, IA, Sac County, IA, Shelby County, IA, Story County, IA, Tama County, IA, Warren County, IA, Webster County, IA, Winnebago County, IA, Wright County, IA, Cass County, NE, Douglas County, NE, Otoe County, NE, Sarpy County, NE, Washington County, NE

The radar

The Des Moines radar (KDMX), 77 km from the middle of the area, began a volume at 00:26 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 145Apr 29, 10:25 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 29, 9:00 PM CDT	Mesoscale Discussion	SPC	Allamakee, Buchanan, Clayton, Clinton, Delaware, Dubuque and 4 more	2 hr
Apr 29, 10:21 PM CDT	Severe Thunderstorm Watch	SPC	Adair, Adams, Allamakee, Audubon, Benton, Black Hawk and 62 more	5 hr
Apr 30, 1:05 AM CDT	Mesoscale Discussion	SPC	Allamakee, Black Hawk, Bremer, Buchanan, Butler, Chickasaw and 9 more	55 min
Apr 30, 4:01 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Cass, Dallas, Fremont, Guthrie and 7 more	119 min

Nearby

Mesoscale Discussions in Iowa, 2013 Mesoscale Discussions in Nebraska, 2013 Every mesoscale discussion in 2013

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.