Hazardous Weather Outlook
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
418 FLCA42 TJSJ 170841 HWOSJU Hazardous Weather Outlook National Weather Service San Juan PR 441 AM AST Sat May 17 2025 AMZ711>745-PRZ001>013-181000- 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- 441 AM AST Sat May 17 2025 This Hazardous Weather Outlook is for portions of Puerto Rico. .DAY ONE...Today and Tonight .Lightning...Isolated to locally scattered thunderstorms. Stay alert and be prepared to take shelter if storms develop. .Excessive Rainfall...Flooding in urban areas, roads, small streams, and washes, particularly across eastern, central, and western to northwestern Puerto Rico, as well as portions of the San Juan metropolitan area. There is a low chance of isolated flash floods and landslides. Elsewhere, plan for water ponding on roads and in poorly drained areas. .DAYS TWO THROUGH SEVEN...Sunday through Friday The primary concern through the period will be excessive rainfall and frequent lightning, even on drier days with less favorable convective conditions. A limited to elevated risk is expected on Sunday, tapering to limited and localized impacts as the week progresses. Above-normal temperatures will continue, with a limited heat risk most afternoons, especially across northern and western Puerto Rico. By Thursday, as trade winds strengthen, expect a return of non-thunderstorm wind hazards and moderate rip current risk. .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. $$ AMZ716-726-VIZ001-002-181000- St. Thomas St. John adjacent Islands-St Croix- Nearshore Atlantic and adjacent Caribbean Coastal Waters- 441 AM AST Sat May 17 2025 This Hazardous Weather Outlook is for portions of USVI. .DAY ONE...Today and Tonight .Lightning...Isolated thunderstorms. Stay alert and be prepared to take shelter if storms develop. .Excessive Rainfall...Ponding of water in roads and poorly drained areas. There is a low chance of localized urban and small streams flooding. .Marine Conditions...Small craft should exercise caution, particularly across the Anegada Passage. .DAYS TWO THROUGH SEVEN...Sunday through Friday The primary concern through the period will be excessive rainfall and frequent lightning, particularly on Sunday. By Thursday, as trade winds strengthen, expect a return of non-thunderstorm wind hazards and moderate rip current risk. .SPOTTER INFORMATION STATEMENT... Spotter activation is encouraged. Please relay any information about flooding, winds, waves, and rip currents to the National Weather Service in San Juan. $$