Hazardous Weather Outlook
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
928 FLCA42 TJSJ 190811 HWOSJU Hazardous Weather Outlook National Weather Service San Juan PR 411 AM AST Tue Aug 19 2025 AMZ711>745-PRZ001>013-200815- 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- 411 AM AST Tue Aug 19 2025 This Hazardous Weather Outlook is for portions of Puerto Rico. .DAY ONE...Today and Tonight .Lightning...Isolated thunderstorms, particularly across northwestern PR. Stay alert and be prepared to take shelter if storms develop. .Excessive Rainfall...Flooding in urban areas, roads, small streams, and washes, particularly across northwestern PR. 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 anyone without effective cooling and/or adequate hydration, with those sensitive to heat at the highest risk. Impacts likely in some health systems, heat-sensitive industries and infrastructures. These conditions are most likely across all coastal and urban areas of the islands. .Marine Conditions...Small craft should exercise caution, particularly across the offshore Atlantic waters. .Rip Currents...Life-threatening rip currents are possible in the surf zone, particularly across Puerto Rico, Vieques and Culebra. Isolated stronger rip currents may occur elsewhere, especially near piers, jetties, and channels. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Hot conditions will continue across the islands 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 the weekend, increasing the potential for showers and thunderstorms, as well as gusty winds and hazardous marine and coastal conditions. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed. $$ AMZ716-726-VIZ001-002-200815- St. Thomas St. John adjacent Islands-St Croix- Nearshore Atlantic and adjacent Caribbean Coastal Waters- 411 AM AST Tue Aug 19 2025 This Hazardous Weather Outlook is for portions of USVI. .DAY ONE...Today and Tonight .Excessive Heat...This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Those extremely sensitive to heat face the highest risk. Some health systems and heat-sensitive industries could be affected. These conditions are most likely across all the U.S. Virgin Islands. .Rip Currents...Life-threatening rip currents are possible in the surf zone, particularly across the northern U.S. Virgin Islands Isolated stronger rip currents may occur elsewhere, especially near piers, jetties, and channels. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Hot conditions will return to the islands as cloudiness from Erin`s circulation departs. A tropical wave is being monitored by the National Hurricane Center. This wave could approach the islands by the weekend, increasing the potential for showers and thunderstorms, as well as gusty winds and hazardous marine and coastal conditions. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed. $$