Hazardous Weather Outlook
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
729 FLCA42 TJSJ 180828 HWOSJU Hazardous Weather Outlook National Weather Service San Juan PR 428 AM AST Mon Aug 18 2025 AMZ711>745-PRZ001>013-190830- 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- 428 AM AST Mon Aug 18 2025 This Hazardous Weather Outlook is for portions of Puerto Rico. .DAY ONE...Today and Tonight .Lightning...Isolated thunderstorms. Stay alert and be prepared to take shelter if storms develop. .Excessive Rainfall...Flooding in urban areas, roads, small streams, and washes. There is a low chance of isolated flash floods. Elsewhere, plan for water ponding on roads and in poorly drained areas. .Excessive Heat...This level of heat affects primarily those individuals extremely sensitive to heat, especially when outdoors without effective cooling and/or adequate hydration. .Wind...Breezy conditions (18-22 kts | 21-25 mph). Unsecured items could blow around. .Marine Conditions...Hazardous conditions for small craft in areas with seas of 7 feet or higher. Small craft should exercise caution elsewhere across the local waters. .Rip Currents...Life-threatening rip currents will develop in the surf zone. These life- threatening conditions are likely across the north and west-facing beaches, with isolated stronger rip currents elsewhere, especially near piers, jetties and channels. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Hot conditions will return to the islands as cloudiness from Erin`s circulation departs. A tropical wave is being monitored by the National Hurricane Center. This wave could approach the islands by Friday or Saturday, increasing the potential for showers and thunderstorms, as well as gusty winds and hazardous marine and coastal conditions. .SPOTTER INFORMATION STATEMENT... Spotter activation is encouraged. Please relay any information about flooding, winds, waves, and rip currents to the National Weather Service in San Juan. $$ AMZ716-726-VIZ001-002-190830- St. Thomas St. John adjacent Islands-St Croix- Nearshore Atlantic and adjacent Caribbean Coastal Waters- 428 AM AST Mon Aug 18 2025 This Hazardous Weather Outlook is for portions of USVI. .DAY ONE...Today and Tonight .Lightning...Isolated thunderstorms. Stay alert and be prepared to take shelter if storms develop. .Excessive Rainfall...Ponding of water in roads and poorly drained areas. There is a low chance of localized urban and small streams flooding. .Excessive Heat...This level of heat affects primarily those individuals extremely sensitive to heat, especially when outdoors without effective cooling and/or adequate hydration. .Wind...Breezy conditions (18-22 kts | 21-25 mph). Unsecured items could blow around. .Marine Conditions...Small craft should exercise caution .Rip Currents...Occasional life-threatening rip currents will develop along the surf zone. Isolated stronger rip currents will occur elsewhere, especially near piers, jetties, and channels. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Hot conditions will return to the islands as cloudiness from Erin`s circulation departs. A tropical wave is being monitored by the National Hurricane Center. This wave could approach the islands by Friday or Saturday, increasing the potential for showers and thunderstorms, as well as gusty winds and hazardous marine and coastal conditions. .SPOTTER INFORMATION STATEMENT... Spotter activation is encouraged. Please relay any information about flooding, winds, waves, and rip currents to the National Weather Service in San Juan. $$