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Ended official alertUpdated

Special Marine Warning for Coastal waters from the Southwest Pass of the Mississippi River to Port Fourchon Louisiana out 20 NM; Coastal waters from Southwest Pass of the Mississippi River to Port Fourchon Louisiana from 20 to 60 NM

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

Official alert fields

What you need to know

Effective
Ended
Official severity
Severe
Official urgency
Immediate
Official certainty
Likely

What is happening

For the following areas... Coastal waters from Southwest Pass of the Mississippi River to Port Fourchon Louisiana from 20 to 60 NM... Coastal waters from the Southwest Pass of the Mississippi River to Port Fourchon Louisiana out 20 NM... At 1134 AM CDT, a cluster of severe thunderstorms capable of producing...

What the bulletin says to do

Strong winds will be dangerous for boaters or anyone near the water. Make sure all on board are wearing life jackets. Seek shelter or move to safe harbor until hazardous weather passes.

Full official description

Bulletin details

For the following areas... Coastal waters from Southwest Pass of the Mississippi River to Port Fourchon Louisiana from 20 to 60 NM... Coastal waters from the Southwest Pass of the Mississippi River to Port Fourchon Louisiana out 20 NM... At 1134 AM CDT, a cluster of severe thunderstorms capable of producing waterspouts were located 17 nm southeast of Louisiana Offshore Oil Port, or 25 nm southwest of Southwest Pass Of the Mississippi River. The a cluster of severe thunderstorms were nearly stationary. HAZARD...Waterspouts and wind gusts 34 knots or greater. SOURCE...Radar indicated. IMPACT...Waterspouts can quickly form and capsize boats...damage vessels and oil rigs...and create suddenly higher waves. Small craft could be damaged in briefly higher winds and suddenly higher waves. Locations impacted include... Louisiana Offshore Oil Port.

Lifecycle record

Official revisions

2 captured
  1. Update

    Special Marine Warning issued August 21 at 11:34AM CDT until August 21 at 12:15PM CDT by NWS New Orleans LA

    Official revision
  2. Alert

    Special Marine Warning issued August 21 at 10:52AM CDT until August 21 at 12:15PM CDT by NWS New Orleans LA

    Official revision

Source and limitations

Publisher: Weather Alert Watch. Primary source: NWS New Orleans LA. 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