2 debris flow, 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 May 14, 5:20 PM AST, 2 hours 10 minutes earlier.
PUERTO RICO AND U.S. VIRGIN ISLANDS FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JUAN PR 520 PM AST FRI MAY 14 2004 .DISCUSSION... UPPER TROUGH WITH VORT CENTER SHIFTING SLIGHTLY WWD INTO CENTRAL BAHAMAS CHANNELING SUB TROPICAL JET STREAM ACROSS THE NE CARIBBEAN TODAY AND PRODUCING GOOD DIVERGENCE ALOFT AND HAS COMBINED WITH THE ONSET OF INCREASING LLVL MOISTURE TO PRODUCE ACTIVE WEATHER ACROSS THE REGION AND SOME SIGNIFICANT RAINFALL TOTALS ACROSS PUERTO RICO. THIS MORNING...HEAVY RAINS AFFECTED THE EAST SECTIONS AND THE SAN JUAN METRO AREA WHERE FLOODING OCCURRED BY 11 AM...WITH AFTERNOON ACTIVITY SHIFTING WEST THEN SOUTHWEST...WHERE SOME 4 INCH RAIN TOTALS WERE ESTIMATED BY NWS DOPPLER RADAR. JET EXPECTED TO CONTINUE TO PRODUCE GOOD DIVERGENCE ALOFT THROUGH THIS EVENING...BEFORE UPPER FLOW BECOMES MORE ZONAL TONIGHT AND SATURDAY...AND STILL FAVORABLE FOR GOOD VENTILATION ALOFT. MEANWHILE AT THE LOWER LEVELS... INCREASING LLVL MOISTURE EXPECTED TONIGHT THROUGH LATE SATURDAY FOR VERY GOOD RAIN CHANCES. THIS COMBINATION OF JET DYNAMICS AND INCREASING MOISTURE WILL MAINTAIN HEAVY RAIN POTENTIAL ACROSS P.R. AND THE U.S.V.I. GFS INDICATING BEST MOISTURE THIS EVENING THROUGH SATURDAY NIGHT...WHILE UKMET CONTINUES TO FORECAST MUCH LESS MOISTURE THROUGH THIS ENTIRE EVENT. CIRRUS CLOUD SHIELD ACROSS THE LEEWARDS AND NE CARIB MASKING LLVL MOISTURE FIELD...BUT FEEL MORE CONFIDENT IN GFS PERFORMANCE. LINGERING MOISTURE AND INSTABILITY WILL PERSIST INTO SUNDAY BEFORE A DRYING TREND ENSUES. && .MARINE... FRESH TRADE WINDS AND VERY CHOPPY SEAS TO PERSIST WITH GFS AND WWIII FORECASTING MAX WIND AND SEAS SUNDAY THROUGH MONDAY...AND FORECAST GRAPHICS WILL NEED TO BE ALTERED SLIGHTLY TO MORE ACCURATELY REFLECT THIS. && .HYDROLOGY... ANTECEDENT SOIL CONDITIONS AND INTERMITTENT RAINS OF RECENT PRODUCING CONDITIONS RIPE FOR FLASH FLOODING AND RIVER FLOODING ACROSS PUERTO RICO NEXT 36 HOURS...AND FLASH FLOOD WATCH TO CONTINUE IN EFFECT FOR MUCH OF THE EASTERN TWO-THIRDS OF P.R. DYNAMICS AND LLVL MOISTURE FORECAST ACROSS THE VI WILL GIVE THEN REASONABLE CHANCE FOR VERY HEAVY RAIN AND GUT/LOW LYING AREA FLOODING AS WELL. && .PRELIMINARY POINT TEMPS/POPS... SJU 73 82 72 85 / 80 80 80 50 STT 73 81 72 84 / 80 70 60 50 && .SJU WATCHES/ADVISORIES... PR...FFA PRZ001>006-009. SCA AMZ 710. VI...SCA AMZ 710. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN JUAN PR 610 AM AST FRI MAY 14 2004 PRZ001>013-AMZ710>750-151000- 610 AM AST FRI MAY 14 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO. .TODAY...THE LOCAL AIRMASS STILL MOIST AND UNSTABLE. RAINFALL AMOUNTS EVEN IN SMALL QUANTITIES MAY BE SIGNIFICANT SINCE SOILS ARE VERY SATURATED ESPECIALLY OVER THE NORTH HALF. RIVERS AND STREAMS LEVELS ARE VERY HIGH AND THESE WILL FLOOD WITH LESSER AMOUNTS OF RAIN OVER THEIR BASINS. LANDSLIDES ARE LIKELY OVER STEEP TERRAIN. MARINE CONDITIONS WILL CONTINUE ROUGH AND CHOPPY ALONG OFF SHORE ATLANTIC WATERS. ELSEWHERE SMALL CRAFT SHOULD EXERCISE CAUTION ELSEWHERE EXCEPT THE WEST WATERS. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED. .DAYS TWO THROUGH SEVEN... ALTHOUGH THE POTENTIAL FOR HEAVY PRECIPITATION AND CHANCES FOR FLASH FLOODING WILL REMAIN HIGH THROUGH THE WEEK SATURDAY COULD BE THE MOST SIGNIFICANT DAY AND THE PRECIPITATION MAY BE EXTREME MAINLY OVER VIEQUES...CULEBRA AND THE EAST HALF OF PUERTO RICO. WEATHER THIS DAY WILL BE SEVERE. LANDSLIDES ARE LIKELY OVER STEEP TERRAIN. A MODERATE TO FRESH WIND FLOW AND CHOPPY SEAS WILL PREVAIL ACROSS THE LOCAL WATERS THROUGH NEXT WEEK. VIZ001-002-AMZ710>730-151000- 610 AM AST FRI MAY 14 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE U.S. VIRGIN ISLANDS. .TODAY...CONTINUOUS MODERATE TO HEAVY PASSING SHOWERS WILL LEAD TO URBAN FLOODING AND POSSIBLE FLASH FLOODING. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. .DAYS TWO THROUGH SEVEN... CHANCES FOR PRECIPITATION WILL REMAIN HIGH BUT FROM EARLY SATURDAY TO EVENING THE PRECIPITATION MAY BE VERY HEAVY PRODUCING HIGHER CHANCES FOR FLASH FLOODING. 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. RIVERA
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
208 PM AST FRI MAY 14 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
1145 AM FLASH FLOOD GUAYNABO 18.39N 66.11W
05/14/2004 GUAYNABO PR PUBLIC
FLOODED ROADS IN FORT BUCHANAN AREA. CARS STALLED IN UP
TO 2 FEET OF WATER
&&
PCPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
613 PM AST FRI MAY 14 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0500 PM FLASH FLOOD NARANJITO 18.31N 66.25W
05/14/2004 NARANJITO PR AIRPLANE PILOT
A MUDSLIDE BLOCKED HIGHWAY 152.
&&
WLSPRELIMINARY LOCAL STORM REPORT ... CORRECTION
NATIONAL WEATHER SERVICE SAN JUAN PR
616 PM AST FRI MAY 14 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0500 PM FLASH FLOOD NARANJITO 18.31N 66.25W
05/14/2004 NARANJITO PR BROADCAST MEDIA
A MUDSLIDE BLOCKED HIGHWAY 152.
&&
WLS2 debris flow. Local standard time, as filed.
Major road damage was reported along roads 173 and 816 in the municipality of Aguas Buenas as various lanes collapsed due to erosion.
A landslide was reported along highway 149 from the municipality of Ciales to Jayuya.
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, May 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: 5398474, 5398475.