Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 892, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Sep 15, 2026, 4:28 PM CDT for Alfalfa County, Oklahoma. It was in force for 32 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
- Sep 15, 2026, 4:28 PM CDT (21:28 UTC)
- Expired
- Sep 15, 2026, 5:00 PM CDT
- In force
- 32 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
County Alfalfa County, OK
The radar
The Vance AFB radar (KVNX), 18 km from the middle of the area, began a volume at 21:28 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
Norman, OK (KOUN), launched 12:00Z, 9.5 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
- 579 J/kg
- Mixed-layer CIN
- -173 J/kg
- Mixed-layer LCL
- 1385 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 104 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 15, 11:45 AM CDT | Heat Advisory | OUN | Atoka, Bryan, Carter, Coal, Hughes, Johnston and 3 more | 31 hr |
| Sep 15, 2:43 PM CDT | Special Weather Statement | OUN | Grant | 32 min |
| Sep 15, 3:45 PM CDT | Special Weather Statement | OUN | Alfalfa | 30 min |
| Sep 15, 4:25 PM CDT | Special Weather Statement | OUN | Alfalfa | 35 min |
| Sep 15, 4:58 PM CDT | Special Weather Statement | OUN | Alfalfa | 32 min |
| Sep 15, 5:16 PM CDT | Special Weather Statement | OUN | Ellis | 29 min |
| Sep 15, 5:28 PM CDT | Special Weather Statement | OUN | Woodward | 32 min |
| Sep 15, 5:30 PM CDT | Special Weather Statement | OUN | Woods | 30 min |
| Sep 15, 5:44 PM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Woods | 31 min |
| Sep 15, 5:45 PM CDT | Special Weather Statement | OUN | Ellis | 30 min |
| Sep 15, 5:48 PM CDT | Severe Thunderstorm Warning | OUN | Harper, Woodward | 42 min |
| Sep 15, 5:50 PM CDT | Severe Thunderstorm Warning | OUN | Woodward | 40 min |
| Sep 15, 6:00 PM CDT | Severe Thunderstorm Warning | OUN | Dewey, Ellis, Woodward | 45 min |
| Sep 15, 6:02 PM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Woods | 28 min |
| Sep 15, 6:12 PM CDT | Special Weather Statement | OUN | Roger Mills | 33 min |
| Sep 15, 6:29 PM CDT | Severe Thunderstorm Warning | OUN | Harper, Woods, Woodward | 46 min |
| Sep 15, 6:45 PM CDT | Special Weather Statement | OUN | Ellis | 30 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2026Every severe thunderstorm warning in 2026
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.