1 strong wind, 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 Aug 22, 11:00 AM AST, 4 hours earlier.
PUERTO RICO AND U.S. VIRGIN ISLANDS FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JUAN PR 1100 AM AST SUN AUG 22 2004 .UPDATE...MOSTLY CLEAR TO PARTLY CLOUDY AND HAZY SKIES PREVAILED OVER THE LOCAL REGION. ONLY HIGH CLOUDS COULD BE SEEN OVER THE ISLANDS. THE DOPPLER RADAR IS SHOWING A VERY LIMITED CLOUD DEVELOPMENT. NO CHANGES IN THE FORECAST PACKAGE. .PREVIOUS DISCUSSION... .SYNOPSIS...AT UPPER LEVELS...HIGH PRESSURE JUST NORTH OF THE DOMINICAN REPUBLIC WILL MERGE WITH ANOTHER HIGH SOUTH OF THE VIRGIN ISLANDS. HIGH PRESSURE OVER THE BAHAMAS ON MONDAY WILL SINK SOUTH ACROSS CUBA MONDAY NIGHT AND INTO THE CARIBBEAN SOUTH OF JAMAICA WEDNESDAY THROUGH THURSDAY. BEGINNING THIS AFTERNOON FLOW ALOFT WILL BECOME NORTHWEST 20 TO 25 KNOTS AND REMAIN NORTHWEST UNTIL TUESDAY. FLOW WILL THEN BECOME SOUTHWEST FOR THE REMAINDER OF THE WEEK. AT MID LEVELS...HIGH PRESSURE WILL CONTINUE OVER THE WESTERN ATLANTIC AND SOUTHEASTERN UNITED STATES. LOW PRESSURE NORTHEAST OF THE AREA MONDAY WILL DISSIPATE. AT LOW LEVELS...THE WAVE THAT MOVED SOUTH OF THE AREA YESTERDAY IS NOW WEST OF THE DOMINICAN REPUBLIC. A WEAK DISTURBANCE HAS MOVED AWAY FROM DANIELLE TOWARD THE AREA CHARACTERIZED BY A WAVE IN THE WIND PATTERN. THIS IS EXPECTED TO PASS ON TUESDAY. MODELS CONTINUE TO DEVELOP A STRONG WAVE MOVING OFF THE AFRICAN COAST AT THIS TIME BUT NOT THE SYSTEM AHEAD OF IT ALONG 10 NORTH WITH CONVECTION FROM 50 WEST TO 36 WEST. && .DISCUSSION...THE EVENING SOUNDING WAS MUCH DRIER TODAY AND SOMEWHAT MORE STABLE AT LOWER LEVELS. RADAR SHOWED VERY LITTLE ACTIVITY IN THE AREA ALTHOUGH ONE SMALL THUNDERSTORM DID DEVELOP IN THE SOUTHWEST CORNER OF ZONE 740 OVERNIGHT. WINDS AT 850 MB BECAME SOUTHEAST DURING THE DAY SATURDAY...BUT ARE EXPECTED TO RETURN TO THE NORTHEAST TODAY. NEVERTHELESS...THEY MAY NOT SHIFT SUFFICIENTLY IN TIME TO KEEP THE AREA FROM WARMING...AGAIN...TO ABOVE NORMAL LEVELS THIS AFTERNOON...ESPECIALLY UNDER THE MOSTLY SUNNY SKIES EXPECTED WITH THE ARRIVAL OF THE DRIER AIR FROM THE NORTHEAST LATER THIS AFTERNOON. MOISTURE FLUX DIVERGENCE WAS QUITE HIGH AGAIN OVER THE WESTERN PORTION OF PUERTO RICO AND STRONG CONVECTION IS EXPECTED THERE AGAIN THIS AFTERNOON. IT SHOULD DIE OUT AS QUICKLY AS IT ARISES AND MOST SHOWERS SHOULD BE OVER BY THE LATE AFTERNOON AS AN AREA OF VERY DRY AIR...AT LEAST DRY FOR HERE...WILL MOVE THROUGH FROM THE NORTHEAST BETWEEN 00Z TO 06Z MONDAY. MOISTURE WILL RECOVER SIGNIFICANTLY BY 12Z MONDAY AND SOME SHOWERS MAY TRY TO DEVELOP IN THE MORNING. MOISTURE FIELDS SHOW LITTLE PATTERN TO THE VARIATIONS FOR THE REMAINDER OF THE NEXT 72 HOURS. ANOTHER EXCEPTIONALLY DRY BAND OF AIR IS FORECAST TO PASS WEDNESDAY EVENING FOLLOWED BY AND AREA OF MOISTURE FRIDAY...BUT WAVE ACTIVITY APPEARS TO BE QUITE WEAK. THESE BANDS OF MOISTURE ARE NOT WELL FORECAST BY THE MODEL...SO WILL CONSIDER THAT MOSTLY SPECULATION UNTIL THEY CAN BE CONFIRMED BY THE SATELLITE 24 TO 36 HOURS AHEAD OF THEIR ARRIVAL. THE GFS SPINS UP THE WAVE MOVING OFF THE COAST OF AFRICA AT THE MOMENT AND BRINGS IT ACROSS 40 WEST ON THURSDAY MORNING. THE DISTURBANCE THEN MOVES NORTHWEST TO ABOVE 20 NORTH ON MONDAY 31 AUGUST AT ABOUT 50 DEGREES WEST LONGITUDE. PRESENT INDICATIONS ARE THAT IT SHOULD HAVE LITTLE EFFECT ON THE AREA...ALTHOUGH IT MAY CAUSE SOME SLACKENING OF THE WIND FIELD HERE IF MODELS VERIFY. AND THAT IS A BIG IF. THE LATEST RUN IS CONSIDERABLY WEAKER THAN THE PREVIOUS RUN AND THE TRACK IS ALSO SLOWER. LATER ITERATIONS MAY CONTINUE THIS TREND AS MOST SYSTEMS THAT DEVELOP NEAR THE COAST OF AFRICA TEND TO MOVE NORTHWEST BEFORE REACHING OUR AREA. && .MARINE...SEAS SHOULD BEGIN DIMINISHING AS WINDS BECOME QUIETER WITH THE PASSAGE OF THE WAVE TO OUR SOUTH YESTERDAY. HIGH PRESSURE FORMS OVER THE NORTHEAST ATLANTIC AT THE BEGINNING OF THE WEEK AND VARIOUS MODELS HAVE THE MAXIMUM PRESSURE REACHING BETWEEN 1032-1035 MB. THIS UNUSUALLY STRONG HIGH WILL BE JUST FAR ENOUGH AWAY TO LEAVE MODERATE BREEZES OVER THE AREA. WIND WILL INCREASE A LITTLE MID WEEK AS ANOTHER HIGH PRESSURE BUILDS IN THE WESTERN ATLANTIC OFF THE COAST OF NEW ENGLAND. GRADIENTS WILL WEAKEN THROUGH THE WEEKEND AND WINDS AND SEAS OVER THE LAST WEEKEND IN AUGUST SHOULD BE THE LIGHTEST OF NEARLY THE ENTIRE MONTH. && .AVIATION...THE BACK EDGE OF THE HAZE WAS SEEN EAST OF THE LESSER ANTILLES YESTERDAY AND ROUGH CALCULATIONS HAVE IT COMING THROUGH SOMETIME LATE SUNDAY AFTERNOON OR EARLY SUNDAY EVENING...VERY LIKELY COINCIDENT WITH THE ARRIVAL OF THE DRY AIR FROM THE HIGH PRESSURE SYSTEM TO OUR NORTHEAST. SKIES SHOULD REMAIN MOSTLY HAZE FREE FOR THE GREATER PART OF THE WEEK. CONSIDERABLE DUST HAS BEEN SEEN EXITING THE AFRICAN COAST WITH THIS LAST WAVE...BUT IT IS NOT CLEAR WHEN IT OR IF IT WILL ARRIVE HERE. && .PRELIMINARY POINT TEMPS/POPS... SJU 91 78 89 78 / 10 20 10 40 STT 90 79 90 78 / 10 30 10 40 && .SJU WATCHES/WARNINGS/ADVISORIES... PR...NONE. VI...NONE. && SNELL
HAZARDOUS WEATHER OUTLOOK...CORRECTED NATIONAL WEATHER SERVICE SAN JUAN PR 600 AM AST SUN AUG 22 2004 PRZ001>013-AMZ710>750-231000- 600 AM AST SUN AUG 22 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO. .TODAY AND TONIGHT... SLIGHTLY HAZY CONDITIONS CAUSED BY DISPERSED AREAS OF SAHARA DUST CAN BE EXPECTED ACROSS THE AREA TODAY. DUE TO LIMITED MOISTURE AVAILABILITY...SHOWERS AND POSSIBLY AN ISOLATED THUNDERSTORM MAY DEVELOP ACROSS THE WEST INTERIOR SECTIONS OF THE ISLAND DURING THE AFTERNOON. THESE SHOWERS MAY PRODUCE BRIEF HEAVY DOWNPOURS AND THEREFORE PRODUCE MINOR ROAD AND STREET FLOODING IN ISOLATED AREAS. NO OTHER SIGNIFICANT HAZARDS ARE EXPECTED. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. .DAYS TWO THROUGH SEVEN...NO SIGNIFICANT WEATHER HAZARDS EXPECTED AT LEAST THROUGH TUESDAY. A INCREASE IN MOISTURE IS EXPECTED WEDNESDAY THROUGH THURSDAY ASSOCIATED WITH A LOW LEVEL TROUGH WHICH WILL MOVE WEST ACROSS THE LOCAL AREA. AS A RESULT SOME ENHANCEMENT IN THE AFTERNOON SHOWERS AND ISOLATED THUNDERSTORM ACTIVITY CAN BE EXPECTED THEREFORE INCREASING THE RISK OF MINOR LOCALIZED FLOODING DURING THE AFTERNOONS. NO OTHER HAZARDS EXPECTED THEREAFTER. VIZ001-002-AMZ710>730-231000- 600 AM AST SUN AUG 22 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE U.S. VIRGIN ISLANDS. .TODAY AND TONIGHT...NO SIGNIFICANT WEATHER HAZARDS ARE EXPECTED. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. .DAYS TWO THROUGH SEVEN...NO SIGNIFICANT WEATHER HAZARDS EXPECTED AT LEAST THROUGH TUESDAY...HOWEVER AN INCREASE IN MOISTURE IS EXPECTED WEDNESDAY THROUGH THURSDAY ASSOCIATED WITH A LOW LEVEL TROUGH WHICH WILL MOVE WEST ACROSS THE LOCAL ISLANDS. AS A RESULT SOME ENHANCEMENT IN THE EARLY MORNING AND AFTERNOON SHOWER ACTIVITY CAN BE EXPECTED BUT NO SIGNIFICANT FLOODING HAZARDS ARE EXPECTED. 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.
1 strong wind. Local standard time, as filed.
A downed power line and tree were reported in the municipality of Cabo Rojo. Pea size hail was reported north of Cabo Rojo.
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, August 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: 5419954.