Alert archive / Iowa / Mesoscale Discussions in 2015

Mesoscale Discussion 1987

November 20, 201552 counties in Iowa; 4 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Nov 20, 2015, 1:51 PM CST for 52 counties in Iowa; 4 counties in Nebraska. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Nov 20, 2015, 1:51 PM CST (19:51 UTC)
Expired: Nov 20, 2015, 6:45 PM CST
In force: 5 hr
Issued by: the Storm Prediction Center

All 56 counties

Audubon County, IA, Benton County, IA, Black Hawk County, IA, Boone County, IA, Bremer County, IA, Buchanan County, IA, Buena Vista County, IA, Butler County, IA, Calhoun County, IA, Carroll County, IA, Cerro Gordo County, IA, Cherokee County, IA, Chickasaw County, IA, Clay County, IA, Crawford County, IA, Dallas County, IA, Delaware County, IA, Fayette County, IA, Floyd County, IA, Franklin 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, Iowa County, IA, Jasper County, IA, Johnson County, IA, Jones County, IA, Kossuth County, IA, Linn County, IA, Marion County, IA, Marshall County, IA, Monona County, IA, O'Brien County, IA, Palo Alto County, IA, Plymouth County, IA, Pocahontas County, IA, Polk County, IA, Poweshiek County, IA, Sac County, IA, Shelby County, IA, Story County, IA, Tama County, IA, Warren County, IA, Webster County, IA, Woodbury County, IA, Wright County, IA, Burt County, NE, Dakota County, NE, Dixon County, NE, Thurston County, NE

The radar

The Des Moines radar (KDMX), 52 km from the middle of the area, began a volume at 19:57 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
Nov 20, 9:00 AM CST	Mesoscale Discussion	SPC	Boone, Buena Vista, Calhoun, Carroll, Cherokee, Clay and 18 more	5 hr

Nearby

Mesoscale Discussions in Iowa, 2015 Mesoscale Discussions in Nebraska, 2015 Every mesoscale discussion in 2015

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.