Hazardous Weather Outlook
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
110 FLCA42 TJSJ 190851 HWOSJU Hazardous Weather Outlook National Weather Service San Juan PR 451 AM AST Sat Jul 19 2025 AMZ711>745-PRZ001>013-200900- 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- 451 AM AST Sat Jul 19 2025 This Hazardous Weather Outlook is for portions of Puerto Rico. .DAY ONE...Today and Tonight .Lightning...Isolated to scattered thunderstorms, particularly across the interior and western sections. Be prepared to stop all outdoor activities and seek shelter if storms develop. .Excessive Rainfall...Flooding in urban areas, roads, small streams, and washes, particularly across the interior and western sections. 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 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 urban and coastal areas. .DAYS TWO THROUGH SEVEN...Sunday through Friday A limited to elevated excessive heat threat will continue through most of the period. Expect breezy conditions from Tuesday or Wednesday onward. The moderate risk of rip currents will return by around mid week. A wet and unstable weather pattern will increase the risk of flooding and thunderstorms by Friday. .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. $$ AMZ716-726-VIZ001-002-200900- St. Thomas St. John adjacent Islands-St Croix- Nearshore Atlantic and adjacent Caribbean Coastal Waters- 451 AM AST Sat Jul 19 2025 This Hazardous Weather Outlook is for portions of USVI. .DAY ONE...Today and Tonight .Lightning...Isolated thunderstorms. Stay alert and be prepared to take shelter if storms develop. .Excessive Rainfall...Ponding of water in roads and poorly drained areas. There is a low chance of localized urban and small streams flooding. .Excessive Heat...This level of heat affects primarily those individuals extremely sensitive to heat, especially when outdoors without effective cooling and/or adequate hydration. These conditions are most likely across urban and coastal areas. .DAYS TWO THROUGH SEVEN...Sunday through Friday A limited excessive heat threat will continue through most of the period. Expect breezy conditions from Tuesday or Wednesday onward. The moderate risk of rip currents will return by around mid week. A wet and unstable weather pattern will increase the risk of flooding and thunderstorms by Friday. .SPOTTER INFORMATION STATEMENT... Spotter activation is encouraged. Please relay any information about flooding, winds, waves, and rip currents to the National Weather Service in San Juan. $$