Alert archive / Iowa / Severe Thunderstorm Warnings in 2022
Severe Thunderstorm Warning 133, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jul 23, 2022, 9:05 PM CDT for Calhoun County, Sac County, Webster County, Iowa. It was in force for 40 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
- Jul 23, 2022, 9:05 PM CDT (02:05 UTC)
- Expired
- Jul 23, 2022, 9:45 PM CDT
- In force
- 40 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Hail
- 0.75 in
- Wind
- 70.0 mph
Counties Calhoun County, IA, Sac County, IA, Webster County, IA
The radar
The Des Moines radar (KDMX), 106 km from the middle of the area, began a volume at 02:06 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 |
|---|---|---|---|
| Jul 23, 8:55 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 2.1 hours before the alert went out and 187 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
- 2390 J/kg
- Mixed-layer CIN
- -145 J/kg
- Mixed-layer LCL
- 2218 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 152 m²/s²
- 0-3 km storm-relative helicity
- 348 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.1
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 Jul 23, 6:44 PM CDT, 2 hours 21 minutes earlier.
Area forecast discussion, Jul 23, 6:44 PM CDT, 2 hours 21 minutes before
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The site you requested is temporarily down for maintenance or an unexpected outage.
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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 |
|---|---|---|---|---|
| Jul 23, 8:49 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Sac, Webster | 41 min |
| Jul 23, 8:55 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Crawford, Sac | 50 min |
| Jul 23, 8:59 PM CDT | Severe Thunderstorm Warning | DMX | Audubon | 46 min |
| Jul 23, 9:15 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Carroll, Dallas, Greene, Guthrie | 30 min |
| Jul 23, 9:39 PM CDT | Special Weather Statement | DMX | Boone, Dallas, Hamilton, Polk, Story, Webster | 51 min |
| Jul 23, 9:48 PM CDT | Special Weather Statement | DMX | Audubon, Calhoun, Carroll, Greene, Guthrie, Humboldt and 3 more | 42 min |
| Jul 23, 9:55 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Pocahontas | 50 min |
| Jul 23, 10:07 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Greene, Hamilton, Story, Webster | 38 min |
| Jul 23, 11:09 PM CDT | Special Weather Statement | DMX | Black Hawk, Grundy, Jasper, Marshall, Poweshiek, Tama | 51 min |
| Jul 24, 12:46 AM CDT | Special Weather Statement | DMX | Hardin | 29 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.