Alert archive / Iowa / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 71, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Apr 28, 2025, 8:51 AM CDT for Bremer County, Iowa. It was in force for 24 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
- Apr 28, 2025, 8:51 AM CDT (13:51 UTC)
- Expired
- Apr 28, 2025, 9:15 AM CDT
- In force
- 24 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Bremer County, IA
The radar
The La Crosse radar (KARX), 148 km from the middle of the area, began a volume at 13:55 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 12:00Z, 1.9 hours before the alert went out and 253 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 592 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 323 m²/s²
- 0-3 km storm-relative helicity
- 334 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
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 Apr 28, 6:25 AM CDT, 2 hours 26 minutes earlier.
Area forecast discussion, Apr 28, 6:25 AM CDT, 2 hours 26 minutes before
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</html>Hazardous weather outlook, Apr 28, 5:27 AM CDT, 3 hours 24 minutes before
Hazardous Weather Outlook National Weather Service Des Moines IA 527 AM CDT Mon Apr 28 2025 IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075- 081>086-092>097-291030- 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-Tama-Audubon-Guthrie-Dallas-Polk-Jasper- Poweshiek-Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-Union- Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne- Appanoose-Davis- 527 AM CDT Mon Apr 28 2025 This Hazardous Weather Outlook is for portions of central Iowa. .DAY ONE...Today and tonight Scattered storms this morning in northern Iowa could be strong to severe with hail up to 1 inch. Severe weather remains likely in the region this afternoon through evening with a level 4 of 5 risk for severe weather in northern Iowa and a level 3 of 5 conditional risk in much of the rest of Iowa. Damaging winds, very large hail, and tornadoes; some strong, are all possible. The highest chances are in northern Iowa, north of US-20 with more uncertainty in storm coverage farther south and west. Many locations will not see any storms today, but if/where storms develop, they have the potential to be extremely strong and dangerous. Today will also be windy with gusts up 45 mph. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Scattered non-severe storms return to the forecast Wednesday into Thursday. .SPOTTER INFORMATION STATEMENT... Spotter activation is likely this afternoon into evening.
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 28, 4:13 PM CDT | Severe Thunderstorm Warning | DMX | Emmet | 47 min |
| Apr 28, 4:56 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Palo Alto | 49 min |
| Apr 28, 5:03 PM CDT | Wind Advisory | DMX | Calhoun, Cerro Gordo, Emmet, Franklin, Hamilton, Hancock and 10 more | 3 hr |
| Apr 28, 5:40 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Palo Alto | 36 min |
| Apr 28, 5:43 PM CDT | Tornado Warning | DMX | Emmet, Palo Alto | 16 min |
| Apr 28, 5:55 PM CDT | Tornado Warning | DMX | Emmet, Kossuth | 22 min |
| Apr 28, 6:43 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth, Winnebago | 33 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.