Flash Flood, Northeast
- When
- May 13, 7:25 AM AST to 11:25 AM AST
- Where
- Northeast County, Humacao
- Reported by
- EMERGENCY MANAGER
Small stream Mariana was reported out of its banks along road 909.
Flash Flood in Puerto Rico, May 13, 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 13, 6:15 AM AST, 1 hour 10 minutes earlier.
Area forecast discussion, May 13, 6:15 AM AST, 1 hour 10 minutes before
PUERTO RICO AND U.S. VIRGIN ISLANDS FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JUAN PR 615 AM AST THU MAY 13 2004 .DISCUSSION... MID TO UPPER LEVEL TROUGH LYING NEARLY EAST TO WEST ALONG ABOUT 24-25 NORTH ACROSS THE SW ATLC WITH VORTS DIGGING WSW TOWARDS THE BAHAMAS COMBINING WITH SUBTROPICAL JET STREAKING ACROSS THE NORTHERN HALF OF THE CARIBBEAN TO PRODUCE EXCELLENT UPPER DIVERGENCE AND VENTILATION ACROSS THE LOCAL AREA AND ENHANCING CONVECTION ACROSS THE REGION ALL NIGHT. THESE DYNAMICS EXPECTED TO REMAIN IN PLACE THROUGHOUT THE DAY FOR VERY GOOD CONVECTIVE POTENTIAL LOCALLY. MOISTURE ASSOCIATED WITH THE REMNANTS OF OLD FRONTAL TROUGH STILL LINGERING ACROSS THE LOCAL CARIBBEAN WATERS EXTENDING EASTWARD ACROSS THE LEEWARDS AND WILL PROVIDE AMPLE MOISTURE ACROSS THE LOCAL AREA THROUGH SATURDAY. BEST DYNAMICS LOOK TO BE TODAY PER RECENT GUIDANCE THEN WAINING THROUGH THE WEEKEND...BUT WITH ZONAL FLOW ALOFT. LLVL MOISTURE FORECAST TO DECREASE SLOWLY TONIGHT THROUGH FRIDAY MORNING...THEN BEGIN TO INCREASE FRIDAY...PEAKING WITH COPIOUS MOISTURE ON SATURDAY. FOR THIS REASON...SATURDAY COULD TURN OUT TO BE A SIGNIFICANT RAIN AND FLOODING EVENT...EVEN FOR THE VIRGIN ISLANDS...AFTER RECENT RAINS... SATURATED SOILS...AND HIGH RIVER LEVELS. MAY CONTINUES TO COME IN LIKE A LION AND NO SIGNIFICANT DRYING TREND FORESEEN IN THE NEXT WEEK. && .MARINE... ATLANTIC HIGH PRESSURE RIDGE WILL DOMINATE THE WESTERN ATLANTIC AND NORTHERN CARIBBEAN FOR THE NEXT 5 TO 7 DAYS WITH FRESH TO STRONG TRADE WINDS AND ROUGH OFF SHORE SEAS. GFS/WWIII FORECASTING PEAK IN WIND AND SEAS MONDAY. && .HYDROLOGY... LOCAL SOILS REMAIN SATURATED AND RIVER LEVELS HIGH AND WILL RESPOND QUICKLY NEXT SEVERAL DAYS TO HEAVY RAINFALL. HAVE ISSUED A FLASH FLOOD WATCH FOR ALL BUT WEST AND SOUTHWEST P.R. THIS MORNING AND MAY BE EXPANDED THIS AFTERNOON. LOOK FOR RIVER PROBLEMS BY MID AFTERNOON ACROSS THE WATCH AREA...WITH N COASTAL AND NE RIVER SYSTEMS MOST SUSCEPTIBLE. && .PRELIMINARY POINT TEMPS/POPS... SJU 83 73 86 73 / 70 50 50 50 STT 82 73 85 73 / 50 50 50 70 && .SJU WATCHES/WARNINGS/ADVISORIES... PR...FFA PRZ001-006. SCA AMZ710. VI...SCA AMZ710. &&
Hazardous weather outlook, May 13, 6:10 AM AST, 1 hour 15 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN JUAN PR 610 AM AST THU MAY 13 2004 PRZ001>013-AMZ710>750-141000- 610 AM AST THU MAY 13 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>730-141000- 610 AM AST THU MAY 13 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
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
- Rip Current in Florida, May 13, 2004
- Rip Current in Florida, May 13, 2004
- Tornado and Flash Flooding in Texas, May 13, 2004
- Flash Flooding and Hail in Texas, May 13, 2004
- Tornado and Flash Flooding in Oklahoma, May 13, 2004
- Damaging Wind in New York, May 13, 2004
- Tornadoes and Flash Flooding in Texas, May 13, 2004
- Tornadoes and Flash Flooding in Texas, May 13 to 14, 2004
- Hail and Damaging Winds in Texas, May 13 to 14, 2004
- Damaging Wind in Texas, May 13, 2004
- Hail and Damaging Winds in Oklahoma, May 13, 2004
- Flash Flooding in Texas, May 13, 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: 5398393.