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FLCA42 TJSJ 290926
HWOSJU

Hazardous Weather Outlook
National Weather Service San Juan PR
526 AM AST Fri Aug 29 2025

AMZ711>745-PRZ001>013-300930-
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-
526 AM AST Fri Aug 29 2025

This Hazardous Weather Outlook is for portions of Puerto Rico.

.DAY ONE...Today and Tonight

.Lightning...Isolated thunderstorms, particularly across west-
northwestern PR and metro area. Stay alert and be prepared to
take shelter if storms develop.

.Excessive Rainfall...Flooding in urban areas, roads, small
streams, and washes, particularly across west-northwestern PR and
metro area. 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 anyone without
effective cooling and/or adequate hydration, with those sensitive
to heat at the highest risk. Impacts likely in some health
systems, heat-sensitive industries and infrastructures. These
conditions are most likely across the urban and coastal areas of
Puerto Rico.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Heat threats will remain the primary concern throughout the
period, while the risk of localized flooding and lightning strikes
will persist each day (particularly during the afternoons). Low
marine and coastal risks are forecast through Wednesday.

.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-VIZ001-002-300930-
St. Thomas St. John adjacent Islands-St Croix-
Nearshore Atlantic and adjacent Caribbean Coastal Waters-
526 AM AST Fri Aug 29 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. These conditions are most likely
across Saint Thomas, Saint John, and Saint Croix.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Heat threats will remain the primary concern throughout the
period, while the risk of localized flooding and lightning strikes
will persist each day (particularly during the afternoons). Low
marine and coastal risks are forecast through Wednesday.

.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.

$$