Alert archive / Iowa / Severe Thunderstorm Warnings in 2022
Severe Thunderstorm Warning 74, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at May 30, 2022, 8:36 PM CDT for 6 counties in Iowa. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 30, 2022, 8:36 PM CDT (01:36 UTC)
- Expired
- May 30, 2022, 9:15 PM CDT
- In force
- 39 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Butler County, IA, Cerro Gordo County, IA, Franklin County, IA, Hamilton County, IA, Hardin County, IA, Wright County, IA
The radar
The Des Moines radar (KDMX), 110 km from the middle of the area, began a volume at 01:37 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 30, 5:23 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 1.6 hours before the alert went out and 243 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
- 1278 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 1827 m above ground
- 0-6 km bulk shear
- 79 kt
- 0-1 km storm-relative helicity
- 229 m²/s²
- 0-3 km storm-relative helicity
- 334 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 10.3
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Des Moines, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at May 30, 6:53 PM CDT, 1 hour 43 minutes earlier.
Area forecast discussion, May 30, 6:53 PM CDT, 1 hour 43 minutes before
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</html>Hazardous weather outlook, May 30, 4:20 PM CDT, 4 hours 16 minutes before
Hazardous Weather Outlook National Weather Service Des Moines IA 420 PM CDT Mon May 30 2022 IAZ004>007-015>017-023>028-033>039-044>049-057>060-070>073- 081>083-092-093-311100- Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun- Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene- Boone-Story-Marshall-Audubon-Guthrie-Dallas-Polk-Cass-Adair- Madison-Warren-Adams-Union-Clarke-Taylor-Ringgold- 420 PM CDT Mon May 30 2022 This Hazardous Weather Outlook is for portions of central, western, and northern Iowa. .DAY ONE...Tonight Scattered thunderstorms are expected this evening and later tonight. Severe storms with large hail, damaging winds, locally heavy rains, and a few tornadoes are possible. Strong, gusty south to southwest winds will also occur outside of thunderstorms early this evening. Gusts may reach 50 mph or more. A Wind Advisory is in effect for the area. Please refer to the National Weather Service website at weather.gov/desmoines for further details. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Thunderstorm chances return to the forecast next weekend. The severe weather potential will be better evaluated in the coming days. .SPOTTER INFORMATION STATEMENT... Spotter activation is possible through this evening. IAZ050-061-062-074-075-084>086-094>097-311100- Tama-Jasper-Poweshiek-Marion-Mahaska-Lucas-Monroe-Wapello-Decatur- Wayne-Appanoose-Davis- 420 PM CDT Mon May 30 2022 This Hazardous Weather Outlook is for portions of southeast Iowa. .DAY ONE...Tonight Scattered thunderstorms are expected tonight. A strong to severe storm is possible. Gusty winds will occur through early this evening with gusts to 40 mph possible. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday There is a slight risk for severe storms on Tuesday. Thunderstorm chances are also in the forecast for late Wednesday and again by next weekend. Severe weather is not expected midweek, with the weekend potential better evaluated in the coming days. .SPOTTER INFORMATION STATEMENT... Spotter activation is possible later tonight, and again into Tuesday. Small
In the hours before
Local storm report, May 30, 4:52 PM CDT, 3 hours 44 minutes before
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</html>Local storm report, May 30, 7:52 PM CDT, 44 minutes before
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</html>The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 7:55 PM CDT | Special Weather Statement | DMX | Franklin, Hamilton | 50 min |
| May 30, 10:50 PM CDT | Special Weather Statement | DMX | Adair, Adams, Dallas, Taylor, Union | 40 min |
| May 30, 11:43 PM CDT | Special Weather Statement | DMX | Clarke, Madison, Polk, Union, Warren | 47 min |
| May 31, 12:19 AM CDT | Special Weather Statement | DMX | Marshall, Story | 41 min |
| May 31, 12:23 AM CDT | Special Weather Statement | DMX | Clarke, Jasper, Lucas, Marion | 52 min |
| May 31, 12:54 AM CDT | Special Weather Statement | DMX | Tama | 51 min |
| May 31, 12:58 AM CDT | Special Weather Statement | DMX | Mahaska, Marion, Poweshiek | 47 min |
| May 31, 1:23 AM CDT | Special Weather Statement | DMX | Black Hawk, Bremer | 37 min |
| May 31, 1:46 AM CDT | Special Weather Statement | DMX | Clarke, Lucas | 44 min |
| May 31, 1:57 AM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Lucas, Wayne | 33 min |
| May 31, 2:29 AM CDT | Severe Thunderstorm Warning | DMX | Lucas, Mahaska, Marion, Monroe | 31 min |
| May 31, 2:54 AM CDT | Special Weather Statement | DMX | Mahaska, Wapello | 51 min |
| May 31, 3:08 AM CDT | Severe Thunderstorm Warning | DMX | Mahaska | 37 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2022Every severe thunderstorm warning 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.