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FLCA42 TJSJ 250918
HWOSJU

Hazardous Weather Outlook
National Weather Service San Juan PR
518 AM AST Mon Aug 25 2025

AMZ711>745-PRZ001>013-261000-
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-
518 AM AST Mon Aug 25 2025

This Hazardous Weather Outlook is for portions of Puerto Rico.

.DAY ONE...Today and Tonight

.Lightning...Isolated thunderstorms, particularly across
western 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 western Puerto Rico. 
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 all coastal and urban areas of Puerto Rico, Vieques, and
Culebra.

.Wind...Breezy conditions (18-22 kts | 21-25 mph), particularly
across coastal exposed 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
most local waters. Small craft should exercise caution elsewhere 
across the local waters.

.Rip Currents...Life-threatening rip currents are likely in the
surf zone, particularly across western, northern, and eastern
Puerto Rico, Vieques, and Culebra. These life- threatening 
conditions are possible across southern Puerto Rico, with 
isolated stronger rip currents possible elsewhere, especially near
piers, jetties and channels. High Surf Advisory and Coastal Flood
Advisory also in effect for northern Puerto Rico and Culebra,
where beach erosion and minor coastal flooding are possible.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

The risk of localized flooding impacts will persist each 
day, while excessive heat remains a primary concern throughout the 
period. Moderate to fresh winds, combined with lingering northerly 
swells, will sustain hazardous marine conditions, including a high 
risk of life-threatening rip currents and potentially high surf that 
could cause localized beach erosion and dangerous swimming 
conditions over the next few days. A Saharan Air Layer (SAL) will 
continue to advance through Tuesday, bringing hazy skies, reduced 
visibility, and degraded air quality.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$

AMZ716-726-VIZ001-002-261000-
St. Thomas St. John adjacent Islands-St Croix-
Nearshore Atlantic and adjacent Caribbean Coastal Waters-
518 AM AST Mon Aug 25 2025

This Hazardous Weather Outlook is for portions of USVI.

.DAY ONE...Today and Tonight

.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. 

.Wind...Breezy conditions (18-22 kts | 21-25 mph), across all the
US Virgin Islands. Unsecured items could blow around.

.Marine Conditions...Hazardous conditions for small craft in
areas with seas of 7 feet or higher, particularly across
most local waters. Small craft should exercise caution elsewhere 
across the local waters.

.Rip Currents...Life-threatening rip currents are likely in the
surf zone of all the US Virgin Islands. Isolated stronger rip 
currents possible elsewhere, especially near piers, jetties and 
channels.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

The threat of excessive heat remains a primary concern 
throughout the period. Moderate to fresh winds, combined with 
lingering northerly swells, will sustain hazardous marine 
conditions, including a high risk of life-threatening rip currents 
and potentially high surf that could cause localized beach erosion 
and dangerous swimming conditions over the next few days. A Saharan 
Air Layer (SAL) will continue to advance through Tuesday, bringing 
hazy skies, reduced visibility, and degraded air quality. 

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$