940
FLCA42 TJSJ 110903
HWOSJU
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN JUAN PR
503 AM AST MON AUG 11 2025
AMZ711>745-PRZ001>013-120915-
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-
503 AM AST MON AUG 11 2025
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF PUERTO RICO.
DAY ONE
TODAY AND TONIGHT
LIGHTNING
ISOLATED THUNDERSTORMS, PARTICULARLY ACROSS
INTERIOR TO W-NW PR AND POSSIBLY DOWNWIND OF EL YUNQUE. STAY
ALERT AND BE PREPARED TO TAKE SHELTER IF STORMS DEVELOP.
EXCESSIVE RAINFALL
FLOODING IN URBAN AREAS, ROADS, SMALL
STREAMS, AND WASHES, PARTICULARLY ACROSS INTERIOR TO W-NW PR AND
POSSIBLY DOWNWIND OF EL YUNQUE. 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 URBAN AND COASTAL AREAS OF PR.
RIP CURRENTS
LIFE-THREATENING RIP CURRENTS ARE POSSIBLE IN THE
SURF ZONE, PARTICULARLY ACROSS NORTHERN TO EASTERN PR AND CULEBRA.
ISOLATED STRONGER RIP CURRENTS MAY OCCUR ELSEWHERE, ESPECIALLY
NEAR PIERS, JETTIES, AND CHANNELS.
DAYS TWO THROUGH SEVEN
TUESDAY THROUGH SUNDAY
EXCESSIVE HEAT AND EXCESSIVE RAINFALL CONCERNS ARE EXPECTED TO
PERSIST THROUGHOUT THE FORECAST PERIOD. HOWEVER, EXCESSIVE
RAINFALL HAZARD RISKS WILL LIKELY INCREASE TONIGHT INTO TUESDAY,
AS TRAILING MOISTURE FROM INVEST 96L HEIGHTEN THE POTENTIAL FOR
SHOWERS AND THUNDERSTORMS, THEREBY RAISING THE RISK OF FLOODING. A
MODERATE RISK OF RIP CURRENTS WILL CONTINUE, POSSIBLY BECOMING
HIGH ON SATURDAY AND SUNDAY. BY LATE TONIGHT THROUGH AT LEAST
EARLY THURSDAY, A SAHARAN AIR LAYER (SAL) WITH MODERATE TO HIGH
CONCENTRATIONS OF SAHARAN DUST WILL MOVE OVER THE REGION,
PROMOTING HAZY SKIES AND DETERIORATING AIR QUALITY. INVEST 97L
OVER THE EASTERN TROPICAL ATLANTIC CURRENTLY HAS A HIGH CYCLONIC
FORMATION CHANCE DURING THE NEXT 2 TO 7 DAYS. RESIDENTS AND
VISITORS SHOULD MONITOR THE DEVELOPMENT OF THIS TROPICAL WAVE AS
THE SYSTEM MOVES ACROSS A FAVORABLE AREA OF FORMATION.
SPOTTER INFORMATION STATEMENT
SPOTTER ACTIVATION WILL NOT BE NEEDED.
AMZ716-726-VIZ001-002-120915-
ST. THOMAS ST. JOHN ADJACENT ISLANDS-ST CROIX-
NEARSHORE ATLANTIC AND ADJACENT CARIBBEAN COASTAL WATERS-
503 AM AST MON AUG 11 2025
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF USVI.
DAY ONE
TODAY AND TONIGHT
EXCESSIVE RAINFALL
PONDING OF WATER IN ROADS AND POORLY
DRAINED AREAS. THERE IS A LOW CHANCE OF LOCALIZED URBAN AND SMALL
STREAMS FLOODING.
EXCESSIVE HEAT
THIS LEVEL OF HEAT AFFECTS PRIMARILY THOSE
INDIVIDUALS EXTREMELY SENSITIVE TO HEAT, ESPECIALLY WHEN OUTDOORS
WITHOUT EFFECTIVE COOLING AND/OR ADEQUATE HYDRATION.
RIP CURRENTS
LIFE-THREATENING RIP CURRENTS ARE POSSIBLE IN THE
SURF ZONE, PARTICULARLY ACROSS BEACHES OF ST. THOMAS AND ST. JOHN.
ISOLATED STRONGER RIP CURRENTS MAY OCCUR ELSEWHERE, ESPECIALLY
NEAR PIERS, JETTIES, AND CHANNELS.
DAYS TWO THROUGH SEVEN
TUESDAY THROUGH SUNDAY
EXCESSIVE HEAT CONCERNS ARE EXPECTED TO PERSIST THROUGHOUT THE
FORECAST PERIOD. HOWEVER, EXCESSIVE RAINFALL HAZARD RISKS WILL
LIKELY INCREASE TONIGHT INTO TUESDAY, AS TRAILING MOISTURE FROM
INVEST 96L HEIGHTEN THE POTENTIAL FOR SHOWERS AND THUNDERSTORMS,
THEREBY RAISING THE RISK OF FLOODING. A MODERATE RISK OF RIP
CURRENTS WILL CONTINUE, POSSIBLY BECOMING HIGH ON SATURDAY AND
SUNDAY. BY LATE TONIGHT THROUGH AT LEAST EARLY THURSDAY, A SAHARAN
AIR LAYER (SAL) WITH MODERATE TO HIGH CONCENTRATIONS OF SAHARAN
DUST WILL MOVE OVER THE REGION, PROMOTING HAZY SKIES AND
DETERIORATING AIR QUALITY. INVEST 97L OVER THE EASTERN TROPICAL
ATLANTIC CURRENTLY HAS A HIGH CYCLONIC FORMATION CHANCE DURING THE
NEXT 2 TO 7 DAYS. RESIDENTS AND VISITORS SHOULD MONITOR THE
DEVELOPMENT OF THIS TROPICAL WAVE AS THE SYSTEM MOVES ACROSS A
FAVORABLE AREA OF FORMATION.
SPOTTER INFORMATION STATEMENT
SPOTTER ACTIVATION WILL NOT BE NEEDED.
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