Hazardous Weather Outlook
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
497 FLCA42 TJSJ 040848 HWOSJU Hazardous Weather Outlook National Weather Service San Juan PR 448 AM AST Mon Aug 4 2025 AMZ711>745-PRZ001>013-050900- 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- 448 AM AST Mon Aug 4 2025 This Hazardous Weather Outlook is for portions of Puerto Rico. .DAY ONE...Today and Tonight .Lightning...Isolated thunderstorms, particularly across western PR in the afternoon. 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 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 coastal and urban areas of PR. .Wind...Breezy conditions (18-22 kts | 21-25 mph). Unsecured items could blow around. .Rip Currents...Life-threatening rip currents are possible in the surf zone, particularly across northern and eastern PR. Isolated stronger rip currents may occur elsewhere, especially near piers, jetties, and channels. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday 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. 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 today. .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. $$ AMZ716-726-VIZ001-002-050900- St. Thomas St. John adjacent Islands-St Croix- Nearshore Atlantic and adjacent Caribbean Coastal Waters- 448 AM AST Mon Aug 4 2025 This Hazardous Weather Outlook is for portions of USVI. .DAY ONE...Today and Tonight .Excessive Heat...This level of heat affects primarily those individuals extremely sensitive to heat, especially when outdoors without effective cooling and/or adequate hydration. These conditions are most likely across the US Virgin Islands. .Wind...Breezy conditions (18-22 kts | 21-25 mph). Unsecured items could blow around. .Rip Currents...Life-threatening rip currents are possible in the surf zone, particularly across Saint Croix. Isolated stronger rip currents may occur elsewhere, especially near piers, jetties, and channels. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Excessive heat concerns will persist through much of the period. Increasing winds during the latter part of the workweek will raise marine and coastal hazards. Low to moderate Saharan dust concentrations will result in hazy skies and reduced air quality today. .SPOTTER INFORMATION STATEMENT... Spotter activation is encouraged. Please relay any information about flooding, winds, waves, and rip currents to the National Weather Service in San Juan. $$