Louisiana Severe Tropical Storm Warning | Effective 06/17/2026 08:06

* LOCATIONS AFFECTED - Johnson Bayou - Holly Beach - Hackberry * WIND - LATEST LOCAL FORECAST: Below tropical storm force wind - Peak Wind Forecast: 10-20 mph with gusts to 35 mph - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Wind less than 39 mph - The wind threat has remained nearly steady from the previous assessment. - PLAN: The sustained wind should remain less than tropical storm force. Conditions may still be gusty. - PREPARE: Listen for any instructions from local officials. - ACT: Ensure emergency readiness should the forecast change. - REALIZED IMPACTS: Being Assessed - Little to no additional wind impacts expected. Community officials are now assessing the extent of actual wind impacts accordingly. * STORM SURGE - LATEST LOCAL FORECAST: Life-threatening storm surge possible - Peak Storm Surge Inundation: The potential for 2-4 feet above ground somewhere within surge prone areas - Window of concern: Begins this morning - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for storm surge flooding greater than 3 feet above ground - The storm surge threat has remained nearly steady from the previous assessment. - PLAN: Plan for life-threatening storm surge flooding of greater than 3 feet above ground. - PREPARE: Storm surge flooding preparations should be underway. Assemble disaster supplies and know your evacuation route. - ACT: Leave if evacuation orders are given for your area. Failure to heed evacuation orders may result in the loss of your life. - POTENTIAL IMPACTS: Significant - Areas of inundation with storm surge flooding accentuated by waves. Damage to several buildings, mainly near the coast. - Sections of near-shore escape routes and secondary roads become weakened or washed out, especially in usually vulnerable low spots. - Major beach erosion with heavy surf breaching dunes. Strong and numerous rip currents. - Moderate damage to marinas, docks, boardwalks, and piers. Several small craft broken away from moorings, especially in unprotected anchorages. * FLOODING RAIN - LATEST LOCAL FORECAST: Flood Watch is in effect - Peak Rainfall Amounts: Additional 1-3 inches, with locally higher amounts - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for major flooding rain - The flooding rain threat has remained nearly steady from the previous assessment. - PLAN: Emergency plans should include the potential for major flooding from heavy rain. Evacuations and rescues are likely. - PREPARE: Strongly consider protective actions, especially if you are in an area vulnerable to flooding. - ACT: Heed any flood watches and warnings. Failure to take action will likely result in serious injury or loss of life. - POTENTIAL IMPACTS: Extensive - Major rainfall flooding may prompt many evacuations and rescues. - Rivers and tributaries may rapidly overflow their banks in multiple places. Small streams, creeks, canals, and ditches may become dangerous rivers. Flood control systems and barriers may become stressed. - Flood waters can enter many structures within multiple communities, some structures becoming uninhabitable or washed away. Many places where flood waters may cover escape routes. Streets and parking lots become rivers of moving water with underpasses submerged. Driving conditions become dangerous. Many road and bridge closures with some weakened or washed out. * TORNADO - LATEST LOCAL FORECAST: - Situation is somewhat favorable for tornadoes - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for a few tornadoes - The tornado threat has remained nearly steady from the previous assessment. - PLAN: Plans should still include the potential for a few tornadoes. - PREPARE: Keep informed should additional weather alerts be needed. - ACT: If a tornado warning is issued, be ready to shelter quickly. - POTENTIAL IMPACTS: Limited - The occurrence of isolated tornadoes can hinder the execution of emergency plans during tropical events. - A few places may experience tornado damage, along with power and communications disruptions. - Locations could realize roofs peeled off buildings, chimneys toppled, mobile homes pushed off foundations or overturned, large tree tops and branches snapped off, shallow-rooted trees knocked over, moving vehicles blown off roads, and boats pulled from moorings.