1 thunderstorm 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 Jul 22, 2:00 PM AST, 2 hours 30 minutes earlier.
PUERTO RICO AND U.S. VIRGIN ISLANDS FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JUAN PR 200 PM AST THU JUL 22 2004 .DISCUSSION...INFORMATION FROM 12Z SOUNDING INDICATED A LOW LEVEL EAST-SOUTHEAST WIND FLOW ACROSS THE LOCAL AREA. SATELLITE IMAGERY INDICATED MID TO UPPER LEVEL CLOUDS BEING BROUGHT BY THE UPPER LEVEL CIRCULATION NORTH TO SOUTH IN THE LEFT SIDE OF A LOW NORTHEAST OF PUERTO RICO. THIS CIRCULATION IS PRODUCING SPEED CONVERGENCE IN THE UPPER LEVELS PROMOTING AIR SUBSIDENCE OVER THE AREA. THIS PATTERN OF UPPER LEVEL CONVERGENCE NEXT 48 TO 72 HOURS. A TOP VIEW OF THE RH HUMIDITY FIELD SUGGEST A HIGH LEVEL OF SATURATION BUT AFTER A LOOK TO A CROSS SECTION MOST OF THE RH IS IN THE UPPER LEVELS AND THIS IS EVIDENT IN THE SOUNDING AND SATELLITE. GFS MODEL GUIDANCE SUGGEST A DRYING TREND UNTIL FRIDAY THEN SATURDAY EVENING BACK TO A WETTER TREND ASSOCIATED TO THE ARRIVAL OF A TROPICAL WAVE. SO FAR LOOKS LIKE WEATHER CONDITIONS ASSOCIATED TO IT WILL BE SATURDAY NIGHT INTO SUNDAY. THEN BACK TO A DRIER PATTERN SUNDAY NIGHT. ADJUSTED SOME GRIDS TO ACCOUNT FOR LATEST INFORMATION. && .PRELIMINARY POINT TEMPS/POPS... SJU 77 88 77 88 / 20 60 40 20 STT 77 90 76 90 / 20 20 30 20 && .SJU WATCHES/WARNINGS/ADVISORIES... PR...NONE. VI...NONE. && RIVERA
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN JUAN PR 600 AM AST THU JUL 22 2004 PRZ001>013-AMZ710>750-231000- 600 AM AST THU JUL 22 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO. .TODAY AND TONIGHT... A DRIER AND MORE STABLE WEATHER PATTERN WILL DEVELOP ACROSS THE NORTHEAST CARIBBEAN TODAY...WHICH WILL MEAN A REDUCTION IN SHOWER AND THUNDERSTORM ACTIVITY AND MORE SUNSHINE FOR THE LOCAL AREA. ISOLATED MORNING SHOWERS ARE POSSIBLE OVER THE EASTERN THIRD OF PUERTO RICO. BY AFTERNOON...SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS WILL BEGIN TO FORM FROM THE CENTRAL INTERIOR TO THE NORTHWEST COAST. SOME OF THESE COULD PRODUCE LOCALLY HEAVY RAINS...WHICH COULD LEAD TO ISOLATED AREAS OF URBAN AND SMALL STREAM FLOODING. FAIRLY TRANQUIL MARINE CONDITIONS ARE EXPECTED TO CONTINUE INTO TONIGHT. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY. .DAYS TWO THROUGH SEVEN... LITTLE CHANGE IS EXPECTED TO THE WEATHER PATTERN GOING INTO THE WEEKEND. THE NEXT TROPICAL WAVE SHOULD REACH THE LOCAL AREA SUNDAY AND CONTINUE TO AFFECT THE AREA INTO MONDAY. RAIN CHANCES AND WINDS WILL INCREASE IN ASSOCIATION WITH THIS WEATHER SYSTEM. TRANQUIL MARINE CONDITIONS ARE EXPECTED AT LEAST THROUGH SATURDAY...BEFORE THE ARRIVAL OF THE NEXT TROPICAL WAVE. VIZ001-002-AMZ710>730-221000- 600 AM AST THU JUL 22 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE U.S. VIRGIN ISLANDS. .TODAY AND TONIGHT... A DRIER AND MORE STABLE WEATHER PATTERN WILL DEVELOP ACROSS THE NORTHEAST CARIBBEAN TODAY...RESULTING IN A REDUCTION IN SHOWER AND THUNDERSTORM ACTIVITY AND MORE SUNSHINE ACROSS THE LOCAL AREA. ONLY ISOLATED SHOWERS ARE EXPECTED AREA WIDE TODAY. FAIRLY TRANQUIL MARINE CONDITIONS WILL CONTINUE INTO TONIGHT. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY. .DAYS TWO THROUGH SEVEN... LITTLE CHANGE IS EXPECTED GOING INTO THE WEEKEND. THE NEXT TROPICAL WAVE WILL REACH THE LOCAL AREA SOMETIME SUNDAY...INTRODUCING AN INCREASED CHANCE OF RAIN AND GUSTY WINDS. UNTIL THEN...TRANQUIL MARINE CONDITIONS WILL PERSIST. 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
1 thunderstorm wind. Local standard time, as filed.
Strong gusty winds were reported in southern Camuy. Downed power lines were reported as tree branches fell on them.
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, July 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: 5413773.