Special Marine Warning for Terrebonne Bay; Barataria Bay; Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm +3 more
Official alert fields
What you need to know
- Applies to
- Barataria Bay, Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm, Coastal waters from Port Fourchon Louisiana to Lower Atchafalaya River LA from 20 to 60 NM, 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, Terrebonne Bay
- Effective
- Ended
- Official severity
- Severe
- Official urgency
- Immediate
- Official certainty
- Likely
What is happening
SMWLIX The National Weather Service in New Orleans has issued a * Special Marine Warning for... Barataria Bay... Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm... Coastal waters from Port Fourchon Louisiana to Lower Atchafalaya River LA from 20 to 60 NM... Coastal waters from Southwest...
What the bulletin says to do
Dangerous high winds and suddenly higher waves are expected! Seek shelter or move to safe harbor immediately! Boaters should seek safe harbor immediately until these storms pass. Wind gusts in excess of 50 knots, high waves, dangerous lightning, and heavy rain are possible with these storms. Frequent lightning is occurring with these storms. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects.
Full official description
Bulletin details
SMWLIX The National Weather Service in New Orleans has issued a * Special Marine Warning for... Barataria Bay... Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm... Coastal waters from Port Fourchon Louisiana to Lower Atchafalaya River LA from 20 to 60 NM... 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... Terrebonne Bay... * Until 1000 PM CDT. * At 825 PM CDT, a cluster of severe thunderstorms was located along a line extending from 6 nm north of Lower Atchafalaya River to 6 nm north of Dulac to 8 nm south of Chauvin to 7 nm west of Grand Isle to 8 nm southeast of Barataria Bay, moving south at 35 knots. HAZARD...Wind gusts in excess of 50 knots. SOURCE...Radar. IMPACT...Boats could suffer significant structural damage in high winds. Small craft could capsize in suddenly higher waves. * Locations impacted include... Caillou Bay, Terrebonne Bay, Grand Isle, Timbalier Island, Timbalier Bay, Isle Derniers, and Louisiana Offshore Oil Port.
Lifecycle record
Official revisions
- Alert
Special Marine Warning issued August 21 at 8:26PM CDT until August 21 at 10:00PM 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
- Alert
- Last collected