Weather Alert WatchOfficial-source alert index
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Ended official alertUpdated

Severe Thunderstorm Warning for O'Brien, IA; Sioux, IA

This alert has ended.Kept for recent context. Do not use it as a current warning.

Official alert fields

What you need to know

Applies to
O'Brien, Sioux
Effective
Ended
Official severity
Severe
Official urgency
Immediate
Official certainty
Observed

What is happening

At 941 PM CDT, a severe thunderstorm was located over Alton, or near Orange City, moving east at 35 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. This severe thunderstorm will be near... Alton and Orange City around 945 PM CDT. Granville around 950 PM CDT.

What the bulletin says to do

Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing large hail.

Read official NWS bulletin

Lifecycle record

Official revisions

2 captured
  1. Update

    Severe Thunderstorm Warning issued October 8 at 9:41PM CDT until October 8 at 10:15PM CDT by NWS Sioux Falls SD

    Official revision
  2. Alert

    Severe Thunderstorm Warning issued October 8 at 9:24PM CDT until October 8 at 10:15PM 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
Actual
Message type
Update
Last collected
Methodology and corrections