Tornado Warning for Lyon, IA; O'Brien, IA; Osceola, IA +1 more
Official alert fields
What you need to know
- Effective
- Ended
- Official severity
- Extreme
- Official urgency
- Immediate
- Official certainty
- Observed
What is happening
The storm which prompted the warning has weakened below severe limits, and no longer appears capable of producing a tornado. Therefore, the warning will be allowed to expire. However, small hail and gusty winds are still possible with this thunderstorm. A Severe Thunderstorm Watch remains in effect until 500 AM CDT...
What the bulletin says to do
No separate action instruction was included in this NWS record. Read the complete official bulletin and follow local authorities.
Full official description
Bulletin details
The storm which prompted the warning has weakened below severe limits, and no longer appears capable of producing a tornado. Therefore, the warning will be allowed to expire. However, small hail and gusty winds are still possible with this thunderstorm. A Severe Thunderstorm Watch remains in effect until 500 AM CDT for northwestern Iowa. Remember, a Severe Thunderstorm Warning still remains in effect for eastern Lyon, northeastern Sioux, far northwestern O'Brien, and southeastern Osceola counties until 1045 PM CDT.
Lifecycle record
Official revisions
- Update
Tornado Warning issued September 1 at 10:27PM CDT until September 1 at 10:30PM CDT by NWS Sioux Falls SD
Official revision - Update
Tornado Warning issued September 1 at 10:18PM CDT until September 1 at 10:30PM CDT by NWS Sioux Falls SD
Official revision - Alert
Tornado Warning issued September 1 at 10:04PM CDT until September 1 at 10:30PM CDT by NWS Sioux Falls SD
Official revision
Source and limitations
Publisher: Weather Alert Watch. Primary source: NWS Sioux Falls SD. This page reorganizes official fields and does not add a forecast or expand the affected area.
- CAP status
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- Last collected