Alert archive / Nebraska / Mesoscale Discussions in 2015

Mesoscale Discussion 1814

September 18, 201510 counties in Iowa; Atchison County, Nodaway County, Worth County, Missouri; 23 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Sep 18, 2015, 9:25 AM CDT for 10 counties in Iowa; Atchison County, Nodaway County, Worth County, Missouri; 23 counties in Nebraska. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued: Sep 18, 2015, 9:25 AM CDT (14:25 UTC)
Expired: Sep 18, 2015, 10:30 AM CDT
In force: 65 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

All 36 counties

Adams County, IA, Cass County, IA, Fremont County, IA, Mills County, IA, Montgomery County, IA, Page County, IA, Pottawattamie County, IA, Ringgold County, IA, Taylor County, IA, Union County, IA, Atchison County, MO, Nodaway County, MO, Worth County, MO, Adams County, NE, Butler County, NE, Cass County, NE, Clay County, NE, Douglas County, NE, Fillmore County, NE, Gage County, NE, Hall County, NE, Hamilton County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Merrick County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Polk County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Thayer County, NE, York County, NE

The radar

The Omaha radar (KOAX), 69 km from the middle of the area, began a volume at 14:25 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
Sep 17, 7:54 PM CDT	Mesoscale Discussion	SPC	Des Moines, Henry, Jefferson, Lee, Louisa, Van Buren	66 min
Sep 17, 10:12 PM CDT	Mesoscale Discussion	SPC	Appanoose, Clarke, Decatur, Lucas, Monroe, Ringgold and 1 more	63 min
Sep 18, 5:20 PM CDT	Mesoscale Discussion	SPC	Davis, Des Moines, Henry, Lee, Van Buren	2 hr

Nearby

Mesoscale Discussions in Nebraska, 2015 Mesoscale Discussions in Iowa, 2015 Mesoscale Discussions in Missouri, 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.