2 heavy rain, as filed by the National Weather Service.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS San Juan, PR wrote its last area forecast discussion before the first event at Sep 8, 1:10 PM AST, 2 hours 50 minutes earlier.
PUERTO RICO AND U.S. VIRGIN ISLANDS FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE SAN JUAN PR
110 PM AST WED SEP 8 2004
EXPECT VARYING AMOUNTS OF CLOUDINESS ACROSS FA THIS AFTERNOON.
SCATTERED TO NUMEROUS SHOWERS AND ISOLATED TO SCATTERED
THUNDERSTORMS WILL DEVELOP...ESPECIALLY OVER THE CENTRAL AND WESTERN
INTERIOR AND WEST SECTIONS OF PUERTO RICO. INHERITED SHORT TERM
GRIDS AND ZFP HAD A PRETTY GOOD HANDLE ON EXPECTED CONDITIONS THIS
AFTERNOON...BUT SENT A QUICK UPDATE TO ALTER SKY COVER...WEATHER AND
POPS A BIT IN MOST ZONES AND PUT HEADLINE BACK INTO NECESSARY ZONES
FOR HIGH SURF ADVISORY AND COASTAL FLOOD WATCH FOR ALL SOUTHEAST
THROUGH SOUTH COASTS OF PUERTO RICO...VIEQUES AND ST CROIX.
SPEAKING OF MARINE CONDITIONS...EXPECT LONG PERIOD EAST SOUTHEAST
SWELLS TO CONTINUE TO BUILD ACROSS THE CARIBBEAN WATERS THIS
AFTERNOON AND THEN CONTINUE THROUGH TONIGHT AND INTO THURSDAY. AS
MENTIONED...A HIGH SURF ADVISORY AND COASTAL FLOOD WATCH HAVE BEEN
RE-ISSUED FOR THESE CONDITIONS. IN ADDITION...A SMALL CRAFT ADVISORY
IS IN EFFECT FOR ALL OF THE LOCAL CARIBBEAN WATERS./ BCS/BCD/RAM
REMAINDER BELOW UNCHANGED EXPECT FOR WATCH/WARNING/ADVISORY SECTION
.PREV DISCUSSION...ALTHOUGH THE CENTER OF HURRICANE IVAN WILL
REMAIN SOUTH OF THE LOCAL AREA...THERE WILL BE EFFECTS IN OUR LOCAL
WEATHER INDUCED BY IT. THE LOWER LEVELS WIND FLOW WILL BE STRONG
ENOUGH AS TO INHIBIT SEA BREEZE EFFECTS AND MOVE SHOWERS RAPIDLY.
GFS SUGGEST A TAIL WITH A VERY HIGH RH VALUES WHICH IMPLIES VERY
SATURATED AIR. LOW LEVEL WIND CONFLUENCE AND CONVERGENCE AND UPPER
LEVEL DIFFLUENCE AND DIVERGENCE THURSDAY AFTERNOON AND EVENING.
WINDS BECOMING STRONGLY FROM THE SOUTHEAST FRIDAY AND THE STRONG
SUBSIDENCE AROUND IVAN WILL ALLOW FOR VERY WARM TEMPERATURES
ESPECIALLY ALONG THE NORTH HALF OF PUERTO RICO. CLIMATE DICTATED
MAINLY BY LOCAL EFFECTS.
&&
.PREV MARINE...CHOPPY SEAS AND STRONG WIND GUSTS ARE EXPECTED
ESPECIALLY ALONG THE SOUTHERNMOST OF THE COASTAL WATERS OF PUERTO
RICO AND THE U.S. VIRGIN ISLANDS.
&&
.PREV AVIATION...WITH THE ADVENT OF IVAN INTO THE CARIBBEAN...IT IS
NOT SAFE TO FLY THROUGH THAT AREA UNTIL IVAN BE GONE. WATCH FOR
SEVERE TURBULENCE AND STORMY WEATHER.
&&
.SJU WATCHES/WARNINGS/ADVISORIES...
PR...SCA AMZ730-740. HSA AND CFW (WATCH) SOUTHEAST THROUGH SOUTH
COASTS OF PRZ002-003-007-011-013
VI...SCA AMZ730. HSA AND CFW (WATCH) SOUTHEAST THROUGH SOUTHWEST
COASTS OF VIZ002.
&&
RIVERAHAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN JUAN PR 600 AM AST WED SEP 8 2004 PRZ001>013-AMZ710>750-091000- 600 AM AST WED SEP 8 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO. .TODAY AND TONIGHT... STRONG WINDS DIVERGING FROM HURRICANE IVANS CIRCULATION ALOFT ARE SINKING OVER A BROAD AREA FROM THE CENTRAL TO THE NORTHEAST CARIBBEAN SEA THIS MORNING. THE RESULT OF THIS WIDESPREAD SINKING IS A SUBSTANTIALLY DRIER ATMOSPHERE OVER PUERTO RICO...COMPARED TO 24 HOURS AGO. THIS IS EVIDENCED BY A DRAMATIC DECREASE IN SHOWER ACTIVITY ACROSS THE LOCAL AREA...A TREND WHICH WILL CONTINUE THROUGHOUT THE DAY TODAY. EVEN THOUGH THERE WILL BE LITTLE PRECIPITATION IN MOST AREAS...SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS ARE STILL POSSIBLE OVER FROM THE WESTERN INTERIOR OF THE ISLAND TO OFFSHORE THE WEST COAST. IN THESE AREAS...THERE IS THE RISK OF URBAN AND SMALL STREAM FLOODING. HURRICANE IVANS PASSAGE THROUGH THE EASTERN CARIBBEAN SEA TODAY WILL BE ACCOMPANIED BY A LARGE AREA OF STRONG WINDS...SOME OF WHICH WILL EXTEND INTO THE CARIBBEAN OFFSHORE WATERS. THESE STRONG WINDS...IN TURN...WILL CREATE ROUGH AND CONFUSED SEAS BUILDING TO AS HIGH AS 10 FEET TODAY...AS WELL AS LARGE SOUTHEASTERLY SWELLS WHICH WILL ARRIVE ALONG THE SOUTH AND EAST FACING COASTS OF PUERTO RICO. A HIGH SURF ADVISORY MAY BE REQUIRED BY MIDDAY TODAY FOR THE ABOVE AREAS DUE TO THESE DEVELOPING...DANGEROUS MARINE CONDITIONS OVER THE CARIBBEAN NEAR SHORE WATERS. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY. .DAYS TWO THROUGH SEVEN... EFFECTS FROM HURRICANE IVAN WILL BEGIN TO DECREASE THURSDAY AS THE HURRICANE MOVES FROM THE EASTERN TO THE CENTRAL CARIBBEAN SEA. HIGH SEAS AND SOUTHERLY TO SOUTHWESTERLY SWELLS WILL RAPIDLY DECREASE DURING THE DAY OVER THE CARIBBEAN WATERS. AN INFLUX OF LOW LEVEL MOISTURE AND A BRISK LOW LEVEL SOUTHEASTERLY WIND WILL MEAN THAT SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS WILL BE POSSIBLE FROM THE CENTRAL INTERIOR TO THE NORTHWEST COAST DURING THE AFTERNOON. SOME OF THESE WILL BE CAPABLE OF PRODUCING HEAVY RAINS...AS WELL AS LOCALIZED URBAN AND SMALL STREAM FLOODING. NO OTHER SIGNIFICANT WEATHER HAZARDS ARE FORESEEN GOING INTO THE WEEKEND...OTHER THAN THE TYPICAL HAZARDS ASSOCIATED WITH AFTERNOON SHOWER AND THUNDERSTORM ACTIVITY OVER THE INTERIOR OF THE ISLAND. HOWEVER...A TROPICAL DISTURBANCE LOCATED OVER THE CENTRAL TROPICAL ATLANTIC THIS MORNING IS BEING MONITORED FOR SIGNS OF DEVELOPMENT BY THE NATIONAL HURRICANE CENTER. AT THE MOMENT THOUGH...THERE IS NO INDICATION THAT THIS WEATHER SYSTEM WILL IMPACT THE WEATHER OVER THE LOCAL AREA. VIZ001-002-AMZ710>730-091000- 600 AM AST WED SEP 8 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE U.S. VIRGIN ISLANDS. .TODAY AND TONIGHT... STRONG UPPER LEVEL WINDS DIVERGING FROM HURRICANE IVANS CIRCULATION ALOFT ARE SINKING OVER A BROAD AREA FROM THE CENTRAL TO THE NORTHEAST CARIBBEAN SEA THIS MORNING. THE RESULT OF THIS WIDESPREAD SINKING IS A SUBSTANTIALLY DRIER ATMOSPHERE OVER THE U.S. VIRGIN ISLANDS...COMPARED TO 24 HOURS AGO. THIS IS EVIDENCED BY A DRAMATIC DECREASE IN SHOWER ACTIVITY ACROSS THE LOCAL AREA...A TREND WHICH WILL CONTINUE INTO TODAY. FOR THAT REASON...ONLY ISOLATED SHOWERS ARE IN THE FORECAST. IVANS PASSAGE THROUGH THE EASTERN CARIBBEAN SEA TODAY WILL BE ACCOMPANIED BY A LARGE AREA OF STRONG WINDS...SOME OF WHICH WILL EXTEND INTO THE CARIBBEAN OFFSHORE WATERS. THESE STRONG WINDS...IN TURN...WILL CREATE ROUGH AND CONFUSED SEAS BUILDING TO AS HIGH AS 10 FEET TODAY...AS WELL AS LARGE SOUTHEASTERLY SWELLS WHICH WILL ARRIVE ALONG THE SOUTH AND EAST FACING COASTS OF SAINT CROIX. A HIGH SURF ADVISORY MAY BE REQUIRED BY MIDDAY TODAY THE SOUTHERNMOST U.S. VIRGIN ISLANDS DUE TO THE DEVELOPING...DANGEROUS MARINE CONDITIONS OVER THE CARIBBEAN NEAR SHORE WATERS. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. .DAYS TWO THROUGH SEVEN... EFFECTS FROM HURRICANE IVAN WILL BEGIN TO DECREASE THURSDAY AS THE HURRICANE MOVES FROM THE EASTERN TO THE CENTRAL CARIBBEAN SEA. THIS WILL MEAN THAT HIGH SEAS AND SOUTHERLY TO SOUTHWESTERLY SWELLS WILL RAPIDLY DECREASE DURING THE DAY OVER THE CARIBBEAN WATERS. SCATTERED SHOWERS WILL BE POSSIBLE OVER THE LOCAL ISLANDS AND THEIR ADJACENT WATERS...BUT NO ESPECIALLY HEAVY RAINS ARE FORECAST. NO OTHER SIGNIFICANT WEATHER HAZARDS ARE FORESEEN GOING INTO THE WEEKEND. HOWEVER...A TROPICAL DISTURBANCE LOCATED OVER THE CENTRAL TROPICAL ATLANTIC THIS MORNING IS BEING MONITORED FOR SIGNS OF DEVELOPMENT BY THE NATIONAL HURRICANE CENTER. AT THE MOMENT THOUGH ...THERE IS NO INDICATION THAT THIS WEATHER SYSTEM WILL IMPACT THE WEATHER OVER THE LOCAL AREA. STAY TUNED TO NOAA WEATHER RADIO AND OTHER LOCAL MEDIA FOR FURTHER DETAILS OR UPDATES. FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE WEB SITE FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS AT (ALL LOWERCASE LETTERS): HTTP://WWW.SRH.NOAA.GOV/SJU. KIMBERLAIN
2 heavy rain. Local standard time, as filed.
Several areas were reported flooded in the municipality of Hormigueros, road 319, the San Jose Lavandero community, road 114 at Valle Hermoso Sur. Around 4 inches of rain fell in Hormigueros during the afternoon. Landslides were reported at Parelas San Romulado Norte, Camino Oscar Barbosa, road 345.
Flooding was reported in Mayaguez, Del Carmen Street at Barrio Santurce, Barrio Rio Hondo, Wilson Street at Parcelas Castillo, Badiz and Nenadich Streets. Landslides were reported at Camino Rosa, road 348, and the bridge at Puente de Camino Juan Lebron was affected by the rains.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Puerto Rico in 2004Every state in 2004This day in weather historyWarnings in Puerto Rico, September 2004
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5423628, 5423685.