Station Name: Grand Isle
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 16 feet

Sensor Depth: -4 feet

Nearest Address:
93 Aquasport Dr
Grand Isle, LA 70358
Jefferson County

GPS Coordinates: 29.263, -89.957

Nearby Water Temperatures

Small Craft Advisory issued July 23 at 3:50AM CDT until July 23 at 1:00PM CDT by NWS New Orleans LA

Effective: Thu July 23, 2026, 3:50 AM
Expires: Thu July 23, 2026, 1:00 PM

* WHAT...South winds 20 to 30 kt with gusts up to 35 kt and seas 7 to 12 ft. * WHERE...Barataria Bay, Coastal Waters from Southwest Pass of the Mississippi River to Port Fourchon LA out 20 nm and Coastal waters from Southwest Pass of the Mississippi River to Port Fourchon Louisiana from 20 to 60 NM. * WHEN...Until 1 PM CDT this afternoon. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.

Tropical Storm Warning issued July 23 at 12:42AM CDT by NWS New Orleans LA

Effective: Thu July 23, 2026, 12:42 AM
Expires: Thu July 23, 2026, 8:45 AM

* LOCATIONS AFFECTED - Grand Isle * WIND - LATEST LOCAL FORECAST: Below tropical storm force wind - Peak Wind Forecast: 25-35 mph with gusts to 40 mph - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for wind 39 to 57 mph - The wind threat has remained nearly steady from the previous assessment. - PLAN: Plan for hazardous wind of equivalent tropical storm force. - PREPARE: Last minute efforts to protect property should now be complete. The area remains subject to limited wind damage. - ACT: Now is the time to shelter from hazardous wind. - POTENTIAL IMPACTS: Unfolding - Potential impacts from the main wind event are unfolding. * STORM SURGE - LATEST LOCAL FORECAST: Not available at this time. To be updated shortly. - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Not available at this time. To be updated shortly. - POTENTIAL IMPACTS: Not available at this time. To be updated shortly. * FLOODING RAIN - LATEST LOCAL FORECAST: - Peak Rainfall Amounts: No additional significant rainfall forecast - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Little or no potential for flooding rain - The flooding rain threat has remained nearly steady from the previous assessment. - PLAN: There is little or no potential for flooding rain. - PREPARE: Little to no preparations are needed to protect against flooding rain at this time. - ACT: Monitor for changes to the forecast. - POTENTIAL IMPACTS: Little to None - Little to no potential impacts from flooding rain. * TORNADO - LATEST LOCAL FORECAST: - Situation is unfavorable for tornadoes - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Tornadoes not expected - The tornado threat has remained nearly steady from the previous assessment. - PLAN: Tornadoes are not expected. Showers and thunderstorms with gusty winds may still occur. - PREPARE: Little to no preparations needed to protect against tornadoes at this time. Keep informed of the latest tornado situation. - ACT: Listen for changes in the forecast. - POTENTIAL IMPACTS: Little to None - Little to no potential impacts from tornadoes. * FOR MORE INFORMATION: - https://gohsep.la.gov/emergency