


Hazardous Weather Outlook
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
639 FLCA42 TJSJ 030840 HWOSJU Hazardous Weather Outlook National Weather Service San Juan PR 440 AM AST Sun Aug 3 2025 AMZ711>745-PRZ001>013-040845- 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- 440 AM AST Sun Aug 3 2025 This Hazardous Weather Outlook is for portions of Puerto Rico. .DAY ONE...Today and Tonight .Lightning...Isolated thunderstorms, particularly across the regional waters and northwestern Puerto Rico. 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 Puerto Rico. There is a low chance of isolated flash floods. Elsewhere, plan for water ponding on roads and in poorly drained areas, particularly across eastern portions of Puerto Rico. .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. .Marine Conditions...Small craft should exercise caution, particularly across offshore Atlantic waters. .Rip Currents...Life-threatening rip currents are possible in the surf zone, particularly across northern and eastern Puerto Rico and Culebra. Isolated stronger rip currents may occur elsewhere, especially near piers, jetties, and channels. .DAYS TWO THROUGH SEVEN...Monday through Saturday Excessive heat concerns will persist through much of the period. Daily afternoon showers and isolated thunderstorms will generally have limited to localized elevated impacts. Locally breezy conditions may offer little relief along exposed areas but will support a moderate rip current risk, especially along northern and eastern Puerto Rico and Culebra on Monday. Winds will increase again late week into the weekend, raising marine and coastal hazard risks. Low to moderate Saharan dust concentrations will result in hazy skies and reduced air quality on Monday. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed. $$ AMZ716-726-VIZ001-002-040845- St. Thomas St. John adjacent Islands-St Croix- Nearshore Atlantic and adjacent Caribbean Coastal Waters- 440 AM AST Sun Aug 3 2025 This Hazardous Weather Outlook is for portions of USVI. .DAY ONE...Today and Tonight .Lightning...Isolated thunderstorms. Stay alert and be prepared to take shelter if storms develop. .Excessive Heat...This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Those extremely sensitive to heat face the highest risk. Some health systems and heat-sensitive industries could be affected. These conditions are most likely across all the islands. .Marine Conditions...Small craft should exercise caution, particularly across offshore Atlantic waters. .Rip Currents...Life-threatening rip currents are possible in the surf zone, particularly across St. Croix. Isolated stronger rip currents may occur elsewhere, especially near piers, jetties, and channels. .DAYS TWO THROUGH SEVEN...Monday through Saturday Excessive heat concerns will persist through much of the period. Increasing winds during the latter part of the workweek will raise marine and coastal hazards. Low to moderate Saharan dust concentrations will result in hazy skies and reduced air quality on Monday. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed. $$