1 flash flood, as filed by the National Weather Service.
Every event with a place to put it. Tap one for its entry below.
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 Sep 27, 3:25 PM AST, 6 hours 35 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JUAN PR 325 PM AST TUE SEP 27 2005 .DISCUSSION...MOISTURE REMAINED ABUNDANT ACROSS THE LOCAL AREA. THE 12Z SOUNDING CAME IN WITH PRECIPITABLE WATER OF 2.04 INCHES AND LIFTED INDEX OF -7.2. WINDS WERE LIGHT FROM THE EAST SOUTHEAST AT LOW LEVELS...AND MAINLY NORTH FROM MID TO UPPER LEVELS. THE UPPER WINDS OF AROUND 30 KNOTS IS HELPING TO INCREASE THE UPPER LEVEL VENTILATION ACROSS THE ISLANDS. AS A RESULT...SHOWERS AND THUNDERSTORMS BEGAN TO DEVELOP OVER EL YUNQUE AREA AND ACROSS THE INTERIOR SECTIONS OF PUERTO RICO AROUND NOON. LATER...CIVIL DEFENSE OFFICIALS REPORTED HEAVY RAIN OVER MOROVIS AND OROCOVIS. WATER VAPOR IMAGERY SHOWS AN AMPLIFYING TROUGH ACROSS THE CENTRAL ATLANTIC...WITH ITS MEAN AXIS SOUTH ALONG 60 WEST. THIS UPPER TROUGH WILL MOVE TOWARDS THE LESSER ANTILLES WEDNESDAY THROUGH THURSDAY. SIMULTANEOUSLY...A TROUGH AND A VORTICITY MAX ARE OBSERVED AT MID LEVELS ACROSS THE LOCAL AREA WEDNESDAY MORNING. THE COMBINATION OF THESE TWO FEATURES WILL ENHANCE THE SHOWER AND THUNDERSTORM ACTIVITY OVER THE LOCAL ISLANDS BEGINNING TONIGHT. THE GFS IS ALSO SHOWING HUMIDITY VALUES GREATER THAN 80 PERCENT AT LOW LEVELS... WHILE SATELLITE PICTURES DEPICT AN AREA OF SHOWERS AND THUNDERSTORMS APPROACHING THE LEEWARD ISLANDS. WEATHER CONDITIONS WILL CONTINUE VERY HUMID AND UNSTABLE THURSDAY THROUGH SATURDAY AS A TROPICAL WAVE MOVES ACROSS THE LOCAL REGION. THE WAVE IS CURRENTLY ALONG 45 WEST. IT IS IN THE PROXIMITY OF AN UPPER LEVEL LOW TO THE NORTHWEST. SO...UPPER-LEVEL WINDS ARE EXPECTED TO INHIBIT ANY TROPICAL DEVELOPMENT OF THIS SYSTEM TO OCCUR DURING THE NEXT COUPLE OF DAYS. THE GFS MODEL IS ALSO SHOWING GOOD THETA-E AND OMEGA VALUES ASSOCIATED WITH THE PASSAGE OF THE TROPICAL WAVE OVER THE LOCAL AREA. THE SOUTHEAST WINDS BEHIND THE WAVE WILL ADVECT ABUNDANT TROPICAL MOISTURE OVER THE LOCAL ISLANDS MAINLY FRIDAY THROUGH SATURDAY. A DRIER AND MORE STABLE ATMOSPHERE WILL INVADE THE LOCAL AREA ON SUNDAY. && .MARINE...LONG PERIOD NORTH NORTHEAST...AND THEN NORTHEAST SWELLS GENERATED FROM A LARGE NON-TROPICAL AREA OF LOW PRESSURE THAT IS LOCATED SEVERAL HUNDRED MILES EAST OF BERMUDA BEGAN TO ARRIVE THIS MORNING...AND WILL PEAK ON WEDNESDAY. LOCAL SPOTTERS REPORTED SEA HEIGHTS OF 5 TO 6 ACROSS THE ATLANTIC NEAR SHORE WATERS. MARINERS SHOULD EXPECT WIND OF 15 KNOTS OR LESS AND SEAS OF 6 TO 7 FEET ACROSS THE ATLANTIC OFFSHORE WATERS AND THE CARIBBEAN PASSAGES. A HIGH SURF ADVISORY IS IN EFFECT ALONG THE NORTHWEST...NORTH... NORTHEAST COAST OF PUERTO RICO...CULEBRA...VIEQUES AND THE NORTHERN U.S. VIRGIN ISLANDS. ALSO...SMALL CRAFT ADVISORY IS IN EFFECT FOR THE ATLANTIC OFFSHORE WATERS UNTIL WEDNESDAY AFTERNOON. ELSEWHERE... MARINERS SHOULD EXERCISE CAUTION UNTIL SEAS SUBSIDE. .PRELIMINARY POINT TEMPS/POPS... SJU 78 88 78 88 / 50 50 50 50 STT 79 88 79 88 / 50 50 50 50 && .SJU WATCHES/WARNINGS/ADVISORIES... PR...HSA PRZ001-002-005-008-010-012-013. SCA AMZ710. VI...HSA VIZ001. && 24
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN JUAN PR 630 AM AST TUE SEP 27 2005 PRZ001>013-AMZ710>750-281030- 630 AM AST TUE SEP 27 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO. .DAY ONE...TODAY AND TONIGHT LINGERING MOISTURE WILL COMBINE WITH LOCAL EFFECTS TO PRODUCE ISOLATED AREAS OF THUNDERSTORMS WITH HEAVY RAINFALL...MAINLY ACROSS THE INTERIOR AND NORTHWEST SECTIONS OF PUERTO RICO. AS A RESULT SOME MINOR LOCALIZED FLOODING IS POSSIBLE. .DAYS TWO THROUGH SEVEN... OTHER THAN DIURNALLY INDUCED AFTERNOON SHOWERS AND THUNDERSTORMS IN ISOLATED AREAS. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED. VIZ001-002-AMZ710>730-281030- 630 AM AST TUE SEP 27 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE U.S. VIRGIN ISLANDS. .DAY ONE...TODAY AND TONIGHT LINGERING MOISTURE ASSOCIATED TO THIS WAVE WILL COMBINE WITH LOCAL EFFECTS TO PRODUCE ISOLATED AREAS OF THUNDERSTORMS WITH HEAVY RAINFALL...MAINLY ACROSS PARTS OF THE ISLANDS. HOWEVER...NO SIGNIFICANT FLOODING IS EXPECTED. .DAYS TWO THROUGH SEVEN... OTHER THAN DIURNALLY INDUCED AFTERNOON SHOWERS AND THUNDERSTORMS IN ISOLATED AREAS. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION IS NOT 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.
The national radar mosaic for the moment the first event began.
1 flash flood. Local standard time, as filed.
Minor flooding developed along the northern portion of road 418 and Madre Vieja bridge channel.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Puerto Rico in 2005Every state in 2005This day in weather historyWarnings in Puerto Rico, September 2005
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: 5475812.