Alert archive / Iowa / Mesoscale Discussions in 2022
Mesoscale Discussion 706
The Storm Prediction Center issued this mesoscale discussion at May 9, 2022, 9:44 PM CDT for 24 counties in Iowa; Harrison County, Mercer County, Worth County, Missouri. It was in force for 91 min.
The area
The outline as issued.
The facts
- Issued
- May 9, 2022, 9:44 PM CDT (02:44 UTC)
- Expired
- May 9, 2022, 11:15 PM CDT
- In force
- 91 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch unlikely
- Chance of a watch
- 20%
All 27 counties
Adams County, IA, Appanoose County, IA, Cedar County, IA, Clarke County, IA, Decatur County, IA, Iowa County, IA, Jasper County, IA, Jefferson County, IA, Johnson County, IA, Keokuk County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Monroe County, IA, Polk County, IA, Poweshiek County, IA, Ringgold County, IA, Taylor County, IA, Union County, IA, Wapello County, IA, Warren County, IA, Washington County, IA, Wayne County, IA, Harrison County, MO, Mercer County, MO, Worth County, MO
The radar
The Des Moines radar (KDMX), 88 km from the middle of the area, began a volume at 02:43 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 nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 2.7 hours before the alert went out and 235 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 997 J/kg
- Mixed-layer CIN
- -366 J/kg
- Mixed-layer LCL
- 1613 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 194 m²/s²
- 0-3 km storm-relative helicity
- 261 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 7:36 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Benton, Black Hawk, Boone, Bremer, Buchanan and 17 more | 5 hr |
| May 9, 9:05 PM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Chickasaw and 8 more | 85 min |
| May 9, 11:07 PM CDT | Mesoscale Discussion | SPC | Clayton | 113 min |
Nearby
Mesoscale Discussions in Iowa, 2022Mesoscale Discussions in Missouri, 2022Every mesoscale discussion in 2022
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.