Alert archive / Iowa / Mesoscale Discussions in 2020

Mesoscale Discussion 1684

September 7, 20205 counties in Illinois; 13 counties in Iowa; 5 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Sep 7, 2020, 7:14 PM CDT for 5 counties in Illinois; 13 counties in Iowa; 5 counties in Missouri. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Sep 7, 2020, 7:14 PM CDT (00:14 UTC)
Expired: Sep 7, 2020, 9:15 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch unlikely
Chance of a watch: 5%

All 23 counties

Appanoose County, IA, Clarke County, IA, Davis County, IA, Decatur County, IA, Des Moines County, IA, Henry County, IA, Jefferson County, IA, Lee County, IA, Lucas County, IA, Monroe County, IA, Van Buren County, IA, Wapello County, IA, Wayne County, IA, Fulton County, IL, Hancock County, IL, Henderson County, IL, McDonough County, IL, Warren County, IL, Clark County, MO, Mercer County, MO, Putnam County, MO, Schuyler County, MO, Scotland County, MO

The radar

The Des Moines radar (KDMX), 147 km from the middle of the area, began a volume at 00:17 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 8, 3:01 PM CDT	Mesoscale Discussion	SPC	Calhoun, Christian, Greene, Jersey, Macoupin, Madison and 3 more	119 min

Nearby

Mesoscale Discussions in Iowa, 2020 Mesoscale Discussions in Illinois, 2020 Mesoscale Discussions in Missouri, 2020 Every mesoscale discussion in 2020

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.