522
FLCA42 TJSJ 210806
HWOSJU

Hazardous Weather Outlook
National Weather Service San Juan PR
406 AM AST Thu Aug 21 2025

AMZ711>745-PRZ001>013-220815-
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-
406 AM AST Thu Aug 21 2025

This Hazardous Weather Outlook is for portions of Puerto Rico.

.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 all lower elevations of Puerto Rico, Culebra and Vieques.

.Marine Conditions...Small craft should exercise caution,
particularly across the offshore Atlantic waters.

.Rip Currents...Life-threatening rip currents are possible in the
surf zone, particularly across the northern and eastern beaches
of Puerto Rico, Culebra and Vieques. Isolated stronger rip
currents may occur elsewhere, especially near piers, jetties, and
channels.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

A strong tropical wave will increase the potential for showers
and thunderstorms from late FRiday through Saturday. Across the
Virgin Islands, ponding of water in roads is anticipated with
isolated urban flooding. For Puerto Rico, urban and small stream
flooding are likely along the interior and northwest, with ponding
of water elsewhere. Marine conditions will deteriorate by the end
of the week as a northerly swell associated with distant Hurricane
Erin. Beaches will be hazardous along the northern and western
coast of Puerto Rico, as well as for St. Thomas and St. John.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$

AMZ716-726-VIZ001-002-220815-
St. Thomas St. John adjacent Islands-St Croix-
Nearshore Atlantic and adjacent Caribbean Coastal Waters-
406 AM AST Thu Aug 21 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 all the local islands.

.Rip Currents...Life-threatening rip currents are possible in the
surf zone, particularly across the northern and eastern exposed
beaches of the islands. Isolated stronger rip currents may occur
elsewhere, especially near piers, jetties, and channels.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

A strong tropical wave will increase the potential for showers
and thunderstorms from late FRiday through Saturday. Across the
Virgin Islands, ponding of water in roads is anticipated with
isolated urban flooding. For Puerto Rico, urban and small stream
flooding are likely along the interior and northwest, with ponding
of water elsewhere. Marine conditions will deteriorate by the end
of the week as a northerly swell associated with distant Hurricane
Erin. Beaches will be hazardous along the northern and western
coast of Puerto Rico, as well as for St. Thomas and St. John.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$