Alert archive / Iowa / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 404, NWS Omaha, NE
NWS Omaha, NE issued this severe thunderstorm warning at Aug 29, 2024, 4:31 PM CDT for Burt County, Nebraska; Harrison County, Monona County, Iowa. It was in force for 29 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
- Aug 29, 2024, 4:31 PM CDT (21:31 UTC)
- Expired
- Aug 29, 2024, 5:00 PM CDT
- In force
- 29 min
- Issued by
- NWS Omaha, NE
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Harrison County, IA, Monona County, IA, Burt County, NE
The radar
The Omaha radar (KOAX), 66 km from the middle of the area, began a volume at 21:32 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
Omaha, NE (KOAX), launched 12:00Z, 9.5 hours before the alert went out and 66 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
- 1295 J/kg
- Mixed-layer CIN
- -128 J/kg
- Mixed-layer LCL
- 1592 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 122 m²/s²
- 0-3 km storm-relative helicity
- 88 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 2:24 PM CDT | Severe Thunderstorm Warning | OAX | Antelope, Boone, Madison | 36 min |
| Aug 29, 3:01 PM CDT | Severe Thunderstorm Warning | OAX | Boone, Madison, Platte | 44 min |
| Aug 29, 3:37 PM CDT | Special Weather Statement | OAX | Butler, Colfax, Cuming, Dodge, Lancaster, Saline and 3 more | 38 min |
| Aug 29, 3:48 PM CDT | Areal Flood Advisory | OAX | Wayne | 3 hr |
| Aug 29, 4:12 PM CDT | Special Weather Statement | OAX | Burt, Cass, Dodge, Douglas, Lancaster, Sarpy and 2 more | 48 min |
| Aug 29, 4:45 PM CDT | Severe Thunderstorm Warning | OAX | Burt, Washington | 45 min |
| Aug 29, 4:53 PM CDT | Special Weather Statement | OAX | Cass, Douglas, Otoe, Sarpy | 37 min |
| Aug 29, 2:51 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 24 min |
| Aug 29, 4:55 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 35 min |
| Aug 29, 5:58 PM CDT | Special Weather Statement | OAX | Pottawattamie, Shelby | 47 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2024Severe Thunderstorm Warnings in Nebraska, 2024Every severe thunderstorm warning in 2024
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.