Hazardous Weather Outlook
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
783 FLCA42 TJSJ 290853 HWOSJU Hazardous Weather Outlook National Weather Service San Juan PR 453 AM AST Mon Sep 29 2025 AMZ711>745-PRZ001>013-300900- San Juan and Vicinity-Northeast-Southeast-Eastern Interior- North Central-Central Interior-Ponce and Vicinity-Northwest- Western Interior-Mayaguez and Vicinity-Southwest-Culebra-Vieques- The nearshore and off shore Atlantic and Caribbean Coastal Waters- 453 AM AST Mon Sep 29 2025 This Hazardous Weather Outlook is for portions of Puerto Rico. .DAY ONE...Today and Tonight .Lightning...Isolated thunderstorms, particularly across northwestern and southeastern Puerto Rico. Stay alert and be prepared to take shelter if storms develop. .Excessive Rainfall...Ponding of water in roads and poorly drained areas, particularly across northwestern and southeastern Puerto Rico. There is a low chance of localized urban and small streams flooding. .Excessive Heat...This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Those extremely sensitive to heat face the highest risk. Some health systems and heat-sensitive industries could be affected. These conditions are most likely across all coastal and urban areas, including Caguas, Culebra, and Vieques. .Marine Conditions...Small craft should exercise caution, particularly across the Mona Passage and offshore Atlantic waters. .Rip Currents...Life-threatening rip currents are possible in the surf zone, particularly across north facing beaches of the islands. Isolated stronger rip currents may occur elsewhere, especially near piers, jetties, and channels. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday The heat risk will remain elevated through the workweek. Extreme Heat Warning conditions are possible once again on Wednesday across most urban areas of the lower elevations of the islands. Afternoon thunderstorms could lead to urban and small stream flooding each day over portions of northern and western PR. A large, long period northerly swell will promote hazardous seas and life-threatening rip currents from late Thursday through Sunday. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed. $$ AMZ716-726-VIZ001-002-300900- St. Thomas St. John adjacent Islands-St Croix- Nearshore Atlantic and adjacent Caribbean Coastal Waters- 453 AM AST Mon Sep 29 2025 This Hazardous Weather Outlook is for portions of USVI. .DAY ONE...Today and Tonight .Excessive Heat...This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Those extremely sensitive to heat face the highest risk. Some health systems and heat-sensitive industries could be affected. These conditions are most likely across all the U.S. Virgin Islands. .Rip Currents...Life-threatening rip currents are possible in the surf zone, particularly across north facing beaches of the islands. Isolated stronger rip currents may occur elsewhere, especially near piers, jetties, and channels. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday The heat risk will remain elevated through the workweek. Extreme Heat Warning conditions are possible once again on Wednesday across most urban areas of the lower elevations of the islands. A large, long period northerly swell will promote hazardous seas and life-threatening rip currents from late Thursday through Sunday. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed. $$