Alert archive / Iowa / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 119, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 20, 2025, 5:19 AM CDT for 7 counties in Iowa. It was in force for 56 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
- Jun 20, 2025, 5:19 AM CDT (10:19 UTC)
- Expired
- Jun 20, 2025, 6:15 AM CDT
- In force
- 56 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Black Hawk County, IA, Grundy County, IA, Hamilton County, IA, Hardin County, IA, Marshall County, IA, Story County, IA, Tama County, IA
The radar
The Des Moines radar (KDMX), 83 km from the middle of the area, began a volume at 10:20 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
Minneapolis, MN (KMPX), launched 00:00Z, 10.3 hours before the alert went out and 292 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
- 1319 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 1988 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 111 m²/s²
- 0-3 km storm-relative helicity
- 337 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 10.0
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 Jun 20, 3:44 AM CDT, 1 hour 35 minutes earlier.
Area forecast discussion, Jun 20, 3:44 AM CDT, 1 hour 35 minutes before
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</html>Hazardous weather outlook, Jun 20, 5:02 AM CDT, 17 minutes before
Hazardous Weather Outlook National Weather Service Des Moines IA 502 AM CDT Fri Jun 20 2025 IAZ007-017-026>028-038-039-050-062-075-085-086-095>097-211600- Worth-Cerro Gordo-Franklin-Butler-Bremer-Grundy-Black Hawk-Tama- Poweshiek-Mahaska-Monroe-Wapello-Wayne-Appanoose-Davis- 502 AM CDT Fri Jun 20 2025 This Hazardous Weather Outlook is for portions of central Iowa. .DAY ONE...Today and tonight Scattered thunderstorms will affect the area early this morning. Severe weather is possible, with the primary threat being strong winds and the secondary threat being large hail. .DAYS TWO THROUGH SEVEN...Saturday through Thursday A Heat Advisory is in effect for the area from noon Saturday through Sunday evening. Please see our website at weather.gov/desmoines for additional details. Thunderstorm chances return to the forecast at intervals from late Sunday into next week. Severe weather chances will be better assessed in the coming days. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed early this morning. IAZ004-005-015-023-024-033>035-044>046-057-058-070-071-081-092- 211600- Emmet-Kossuth-Palo Alto-Pocahontas-Humboldt-Sac-Calhoun-Webster- Crawford-Carroll-Greene-Audubon-Guthrie-Cass-Adair-Adams-Taylor- 502 AM CDT Fri Jun 20 2025 This Hazardous Weather Outlook is for portions of central Iowa. .DAY ONE...Today and tonight Scattered thunderstorms will affect the area early this morning. Severe weather is possible, with the primary threats being strong winds and large hail. An Extreme Heat Warning is in effect beginning at noon today. Please see our website at weather.gov/desmoines for additional details. .DAYS TWO THROUGH SEVEN...Saturday through Thursday An Extreme Heat Warning is in effect for the area through Sunday evening. Please see our website at weather.gov/desmoines for additional details. Thunderstorm chances return to the forecast at intervals from late Sunday into next week. Severe weather chances will be better assessed in the coming days. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated. IAZ006-016-025-036-037-047>049-059>061-072>074-082>084-093-094- 211600- Winnebago-Hancock-Wright-Hamilton-Hardin-Boone-Story-Marshall- Dallas-Polk-Jasper-Madison-Warren-Marion-Union-Clarke-Lucas- Ringgold-Decatur- 502 AM CDT Fri Jun 20 2025 This Hazardous Weather Outlook is for portions of central Iowa. .DAY ONE...Today and tonight Scattered thunderstorms will affect the area early this morning. Severe weather is possible, with the primary threats being strong winds and large hail. An Heat Advisory is in effect beginning at noon today. Please see our website at weather.gov/desmoines for additional details. .DAYS TWO THROUGH SEVEN...Saturday through Thursday A Heat Advisory is in effect for the area through Sunday evening. Please see our website at weather.gov/desmoines for additional details. Thunderstorm chances return to the forecast at intervals from late Sunday into next week. Severe weather chances will be better assessed in the coming days. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated.
In the hours before
Local storm report, Jun 20, 2:38 AM CDT, 2 hours 41 minutes before
Preliminary Local Storm Report
National Weather Service Des Moines IA
238 AM CDT Fri Jun 20 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0226 AM Tstm Wnd Gst 2 WNW Gruver 43.41N 94.75W
06/20/2025 M59 MPH Emmet IA ASOS
measured at the Estherville airport.
&&
RDLocal storm report, Jun 20, 3:24 AM CDT, 1 hour 55 minutes before
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</html>Local storm report, Jun 20, 4:11 AM CDT, 1 hour 8 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 |
|---|---|---|---|---|
| Jun 20, 1:59 AM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth | 46 min |
| Jun 20, 2:26 AM CDT | Severe Thunderstorm Warning | DMX | Taylor | 49 min |
| Jun 20, 2:42 AM CDT | Severe Thunderstorm Warning | DMX | Emmet, Hancock, Kossuth, Palo Alto, Winnebago | 48 min |
| Jun 20, 3:16 AM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock, Humboldt, Kossuth, Winnebago, Wright | 44 min |
| Jun 20, 3:21 AM CDT | Heat Advisory | DMX | Appanoose, Black Hawk, Bremer, Butler, Cerro Gordo, Davis and 9 more | 4 days |
| Jun 20, 3:49 AM CDT | Severe Thunderstorm Warning | DMX | Franklin, Hamilton, Humboldt, Webster, Wright | 41 min |
| Jun 20, 4:01 AM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Franklin, Hancock, Wright | 44 min |
| Jun 20, 4:29 AM CDT | Severe Thunderstorm Warning | DMX | Franklin, Grundy, Hamilton, Hardin, Webster, Wright | 61 min |
| Jun 20, 4:43 AM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin, Grundy | 47 min |
| Jun 20, 5:59 AM CDT | Severe Thunderstorm Warning | DMX | Dallas, Guthrie | 31 min |
| Jun 20, 6:03 AM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Poweshiek, Story, Tama | 57 min |
| Jun 20, 6:09 AM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock, Winnebago, Worth | 51 min |
| Jun 20, 6:28 AM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Worth | 47 min |
| Jun 20, 8:19 AM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Grundy, Marshall, Tama | 41 min |
| Jun 20, 8:42 AM CDT | Flash Flood Warning | DMX | Black Hawk, Butler, Grundy | 3 hr |
| Jun 20, 8:58 AM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Poweshiek, Tama | 62 min |
| Jun 20, 10:26 AM CDT | Special Weather Statement | DMX | Jasper, Poweshiek | 49 min |
| Jun 20, 11:02 AM CDT | Special Weather Statement | DMX | Mahaska, Marion, Monroe, Wapello | 43 min |
| Jun 20, 11:45 AM CDT | Special Weather Statement | DMX | Appanoose, Davis, Monroe, Wapello | 45 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2025Every severe thunderstorm warning in 2025
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.