Alert archive / Iowa / Mesoscale Discussions in 2016

Mesoscale Discussion 1657

September 7, 201612 counties in Iowa; 11 counties in Missouri; 8 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Sep 7, 2016, 2:47 PM CDT for 12 counties in Iowa; 11 counties in Missouri; 8 counties in Nebraska. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Sep 7, 2016, 2:47 PM CDT (19:47 UTC)
Expired: Sep 7, 2016, 5:15 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center
Chance of a watch: 20%

All 31 counties

Adams County, IA, Appanoose County, IA, Clarke County, IA, Decatur County, IA, Fremont County, IA, Mills County, IA, Montgomery County, IA, Page County, IA, Ringgold County, IA, Taylor County, IA, Union County, IA, Wayne County, IA, Adair County, MO, Atchison County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Mercer County, MO, Nodaway County, MO, Putnam County, MO, Sullivan County, MO, Worth County, MO, Cass County, NE, Johnson County, NE, Lancaster County, NE, Nemaha County, NE, Otoe County, NE, Richardson County, NE, Sarpy County, NE, Saunders County, NE

The radar

The Des Moines radar (KDMX), 147 km from the middle of the area, began a volume at 19:46 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.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 6, 7:00 PM CDT	Severe Thunderstorm Watch	SPC	Adair, Adams, Audubon, Black Hawk, Boone, Bremer and 30 more	7 hr
Sep 6, 8:16 PM CDT	Mesoscale Discussion	SPC	Allamakee, Winneshiek	89 min
Sep 6, 10:45 PM CDT	Mesoscale Discussion	SPC	Buena Vista, Calhoun, Carroll, Cerro Gordo, Cherokee, Crawford and 15 more	60 min
Sep 7, 1:00 PM CDT	Mesoscale Discussion	SPC	Cedar, Clinton, Des Moines, Dubuque, Henry, Jackson and 9 more	3 hr

Nearby

Mesoscale Discussions in Iowa, 2016 Mesoscale Discussions in Missouri, 2016 Mesoscale Discussions in Nebraska, 2016 Every mesoscale discussion in 2016

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.