| Event | Severe Thunderstorm Warning |
| Severity | Severe |
| Urgency | Immediate |
| Certainty | Observed |
| Area | Harrison, IA; Shelby, IA |
| Effective | 9/6/2026, 3:51:00 PM CDT |
| Expires | 9/6/2026, 4:30:00 PM CDT |
Severe Thunderstorm Warning issued September 6 at 3:51PM CDT until September 6 at 4:30PM CDT by NWS Omaha/Valley NE
Details
SVROAX
The National Weather Service in Omaha has issued a
* Severe Thunderstorm Warning for…
Northeastern Harrison County in southwestern Iowa…
Shelby County in southwestern Iowa…
* Until 430 PM CDT.
* At 351 PM CDT, a severe thunderstorm was located over Defiance, or
11 miles north of Harlan, moving east at 30 mph.
HAZARD…60 mph wind gusts and quarter size hail.
SOURCE…Radar indicated.
IMPACT…Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* This severe thunderstorm will be near…
Defiance around 355 PM CDT.
Irwin around 400 PM CDT.
Instructions
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.
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