


Hazardous Weather Outlook
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
792 FLCA42 TJSJ 200700 HWOSJU Hazardous Weather Outlook National Weather Service San Juan PR 300 AM AST Sun Apr 20 2025 AMZ711>745-PRZ001>013-211000- 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- 300 AM AST Sun Apr 20 2025 This Hazardous Weather Outlook is for portions of Puerto Rico. .DAY ONE...Today and Tonight .Lightning...Isolated thunderstorms, particularly across northern Puerto Rico, Vieques, and Culebra, this morning. Stay alert and be prepared to take shelter if storms develop. .Excessive Rainfall...Flooding in urban areas, roads, small streams, and washes, particularly across northern Puerto Rico this morning. There is a low chance of isolated flash floods. Elsewhere, plan for water ponding on roads and in poorly drained areas, particularly across northern and eastern Puerto Rico, Vieques, and Culebra. .Wind...Breezy conditions (18-22 kts | 21-25 mph), particularly across coastal areas of Puerto Rico, Vieques, and Culebra. Unsecured items could blow around. .Marine Conditions...Hazardous conditions for small craft in areas with seas of 7 feet or higher, particularly across the offshore Atlantic waters, coastal waters of northern and northwestern Puerto Rico, and Mona Passage. Small craft should exercise caution elsewhere across the local waters. .Rip Currents...Life-threatening rip currents are likely in the surf zone, particularly across northern Puerto Rico. These life- threatening conditions are possible across southwestern Puerto Rico and Vieques, with isolated stronger rip currents possible elsewhere, especially near piers, jetties and channels. .DAYS TWO THROUGH SEVEN...Monday through Saturday Moderate to fresh winds will persist on Monday, maintaining breezy conditions that could lead to wind-related hazards, particularly along coastal areas. Hazardous marine conditions are expected to continue through Tuesday, driven by these winds and a weak northerly swell. The high risk of life-threatening rip currents will also extend into early next week. By the end of the workweek, warmer temperatures are forecast to return, along with an increased risk of flooding and lightning. However, these hazards will likely become more localized, primarily driven by afternoon convection resulting from sea breeze interactions and diurnal heating. .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. $$ AMZ716-726-VIZ001-002-211000- St. Thomas St. John adjacent Islands-St Croix- Nearshore Atlantic and adjacent Caribbean Coastal Waters- 300 AM AST Sun Apr 20 2025 This Hazardous Weather Outlook is for portions of USVI. .DAY ONE...Today and Tonight .Lightning...Isolated thunderstorms, particularly this morning. Stay alert and be prepared to take shelter if storms develop. .Excessive Rainfall...Ponding of water in roads and poorly drained areas. There is a low chance of localized urban and small streams flooding. .Wind...Breezy to Windy conditions (23-33 kts | 26-38 mph), with the greatest risk. Outdoor items could blow around or be damaged. .Marine Conditions...Hazardous conditions for small craft in areas with seas of 7 feet or higher, particularly across the offshore Atlantic waters. Small craft should exercise caution elsewhere across the local waters. .Rip Currents...Life-threatening rip currents are possible in the surf zone. Isolated stronger rip currents may occur elsewhere, especially near piers, jetties, and channels. .DAYS TWO THROUGH SEVEN...Monday through Saturday Moderate to fresh winds will persist on Monday, maintaining breezy conditions that could lead to wind-related hazards, particularly along coastal areas. Hazardous marine conditions are expected to continue through Tuesday, driven by these winds and a weak northerly swell. The high risk of life-threatening rip currents will also extend into early next week. By the end of the workweek, warmer temperatures are forecast to return. .SPOTTER INFORMATION STATEMENT... Spotter activation is encouraged. Please relay any information about flooding, winds, waves, and rip currents to the National Weather Service in San Juan. $$