Special Marine Warning for Terrebonne Bay; Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm
Official alert fields
What you need to know
- Applies to
- Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA 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... Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm... Terrebonne Bay... * Until 200 PM CDT. * At 100 PM CDT, a cluster of severe thunderstorms capable of producing waterspouts was located near...
What the bulletin says to do
Strong winds will be dangerous for boaters or anyone near the water. Boaters should avoid waterspouts and never try to navigate near them. Make sure all on board are wearing life jackets. Seek shelter or move to safe harbor until hazardous weather passes. Report severe weather to the Coast Guard or the National Weather Service.
Full official description
Bulletin details
SMWLIX The National Weather Service in New Orleans has issued a * Special Marine Warning for... Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm... Terrebonne Bay... * Until 200 PM CDT. * At 100 PM CDT, a cluster of severe thunderstorms capable of producing waterspouts was located near Terrebonne Bay, moving south at 15 knots. HAZARD...Waterspouts and wind gusts 34 knots or greater. SOURCE...Radar. 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... Terrebonne Bay and Isle Derniers.
Lifecycle record
Official revisions
- Alert
Special Marine Warning issued July 21 at 1:00PM CDT until July 21 at 2:00PM 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