Flash Flood, North Central
- When
- May 9, 8:30 PM AST to 11:30 PM AST
- Where
- North Central County, Vega Baja
- Reported by
- EMERGENCY MANAGER
Several cars were rescued from highway 2 flood waters.
Flash Flood in Puerto Rico, May 9, 2004
1 flash flood, as filed by the National Weather Service.
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 1
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.
What forecasters said that day
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 9, 5:00 AM AST, 15 hours 30 minutes earlier.
Area forecast discussion, May 9, 5:00 AM AST, 15 hours 30 minutes before
PUERTO RICO AND U.S. VIRGIN ISLANDS FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JUAN PR 500 AM AST SUN MAY 9 2004 .DISCUSSION...IN THE SHORT TERM...RIVER LEVELS ALONG THE NORTH CENTRAL REMAIN ABOVE FLOOD STAGE IN CAMUY AND MANATI. NO PROBLEMS I CAMUY AND ONLY ROAD FLOODING IN MANATI. ARECIBO RIVERS ABOVE ACTION STAGE BUT HAVE GONE BELOW FLOOD STAGE. LOW LEVEL EAST NORTHEAST WIND ADVECTING MOISTURE. REMNANTS OF FRONTAL BOUNDARY STILL LINGERING ACROSS THE NORTHEAST CARIBBEAN AT 850 AND 700 MB. ALTHOUGH DYNAMICS FOR A SITUATION SIMILAR TO SATURDAYS AFTERNOON RAINFALL HAVE ALREADY PROGRESSED EAST WITH 500 MB SHORT WAVE TROUGH. ENOUGH LOW LEVEL MOISTURE AND INSTABILITY REMAINS FOR THE LOW LEVEL EAST TO SOUTHEAST WINDS TO TRIGGER SHOWERS AND THUNDERSTORMS OVER THE WEST HALF OF PUERTO RICO THIS AFTERNOON WITH POTENTIAL FOR LOCALIZED FLASH FLOODING OR RIVER FLOODING. HIGH PRESSURE OVER THE WEST ATLANTIC TO BUILD EAST AND SOUTHEAST BEHIND COLD FRONT TO PUSH LOW LEVEL CONVERGENCE EAST TO THE LEEWARD ISLANDS TODAY AND ALLOW FOR AN EAST TO NORTHEAST FLOW MONDAY THROUGH TUESDAY. SINE WE ARE IN THE MONTH OF MAY...WOULD EXPECT PATTERN OF SCATTERED TO NUMEROUS AFTERNOON SHOWERS TO CONTINUE THROUGH THE WEEK. MODELS BRING ANOTHER MID TO UPPER TROUGH BY TUESDAY TO THE NORTHEAST WITH PLENTY OF MID LEVEL MOISTURE TO ADVECT INTO THE AREA FROM THE WEST FROM TUESDAY NIGHT INTO FRIDAY. && .MARINE...A GENTLE TO MODERATE LOW LEVEL FLOW WILL PREVAIL ACROSS THE LOCAL WATERS THROUGH TODAY...THEN MODERATE TO FRESH TONIGHT THROUGH WEDNESDAY. SEAS MOSTLY 5-6 FEET OR THROUGH THE PERIOD IN NORTHEAST SWELLS. && .PRELIMINARY POINT TEMPS/POPS... SJU 86 73 86 73 / 40 50 40 40 STT 83 74 82 74 / 40 40 40 40 && .SJU WATCHES/WARNINGS/ADVISORIES... PR...FLW NORTH CENTRAL TIL 630 AM. VI...NONE. && RM
Hazardous weather outlook, May 9, 6:10 AM AST, 14 hours 20 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN JUAN PR 610 AM AST SUN MAY 9 2004 PRZ001>013-AMZ710>750-101000- 610 AM AST SUN MAY 9 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO. .TODAY...MOISTURE ASSOCIATED WITH THE REMNANTS OF A COLD FRONTAL BOUNDARY...WILL COMBINE WITH THE LOCAL EFFECTS TO PRODUCE SCATTERED TO NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS...MAINLY ACROSS THE INTERIOR AND WEST PART OF PUERTO RICO DURING THE AFTERNOON HOURS. A FEW LOCATIONS WILL AGAIN RECEIVE ENOUGH RAINFALL TO RESULT IN SOME URBAN AND SMALL STREAM FLOODING...WITH THE POTENTIAL FOR LOCALIZED FLASH OR RIVER FLOODING. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED. .DAYS TWO THROUGH SEVEN... EXPECT SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS. ASSOCIATED RAINFALL COULD RESULT IN AT LEAST SOME URBAN AND SMALL STREAM FLOODING. A MODERATE TO FRESH WIND FLOW AND CHOPPY SEAS WILL PREVAIL ACROSS THE LOCAL WATERS UNTIL WEDNESDAY. VIZ001-002-AMZ710>730-101000- 610 AM AST SUN MAY 9 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE U.S. VIRGIN ISLANDS. .TODAY...SCATTERED SHOWERS WILL OCCUR ACROSS MOST OF THE ISLANDS TODAY. ASSOCIATED RAINFALL COULD RESULT IN SOME URBAN AND GUT FLOODING. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. .DAYS TWO THROUGH SEVEN... SCATTERED SHOWERS WILL OCCUR ACROSS THE U.S. VIRGIN ISLANDS DURING THE NEXT SEVERAL DAYS. NO HAZARDOUS WEATHER CONDITIONS IS EXPECTED. A MODERATE TO FRESH WIND FLOW AND CHOPPY SEAS WILL PREVAIL ACROSS THE LOCAL WATERS UNTIL WEDNESDAY. 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.
Event by event
1 flash flood. Local standard time, as filed.
What these are
- Flash Flood
- Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Flash Flood in Pennsylvania, May 9 to 10, 2004
- Tornadoes and Hail in Minnesota, May 9, 2004
- Hail and Damaging Winds in Michigan, May 9 to 10, 2004
- Hail and Damaging Winds in Nebraska, May 9, 2004
- Hail and Damaging Wind in Georgia, May 9, 2004
- Lightning Strike in North Carolina, May 9, 2004
- Tornado in Minnesota, May 9, 2004
- Flash Flooding and Flood in Michigan, May 9 to 10, 2004
- Hail in Nebraska, May 9, 2004
- Hail and Damaging Wind in Maryland, May 9, 2004
- Hail and Damaging Winds in Wisconsin, May 9, 2004
- Marine Thunderstorm Winds in Lake Michigan, May 9, 2004
More
Every storm in Puerto Rico in 2004Every state in 2004This day in weather historyWarnings in Puerto Rico, May 2004
Sources
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: 5398712.