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 Aug 20, 6:45 AM AST, 3 hours 13 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JUAN PR 645 AM AST SAT AUG 20 2005 .DISCUSSION... LOW LAT TROPICAL WAVE PASSING SOUTH OF PUERTO RICO ATTM...PRODUCING A MOIST SELY LOW TO MID LEVEL FLOW AND BROAD CONVERGENCE ACROSS THE NE CARIB. THIS HAS INTERACTED ALL NIGHT WITH A SMALL MID LEVEL VORT CENTER NORTH OF THE ISLAND THAT HAS TRAILED THE REMNANTS OF T.D. 10 BY A FEW DEGREES ALL THE WAY ACROSS THE ATLC. THIS MID LEVEL VORT CENTER IS NOW MOVING VERY SLOWLY W AND CONTINUES TO PRODUCE CONVERGENCE LEADING TO DEEP CONVECTIVE CLUSTERS TO ITS E AND SE...WITH ADDITIONAL LLVL MOISTURE UPSTREAM TO ADVECT INTO THE REGION TODAY. WESTERLIES ALOFT ABOVE THIS FEATURE...AND MILD DIVERGENCE WILL LEAD TO ACTIVE WEATHER TODAY. YESTERDAYS FORECAST WAS OVERDONE...AS DRIER LOW TO MID MID LEVEL AIR MOVED INTO THE AREA DURING THE DAY...AS DEPICTED BY TNCM 12Z SOUNDING. HOWEVER...THIS WILL NOT BE THE CASE TODAY...AND DEEPENING MOISTURE LOW THROUGH THE MID LEVELS IS EXPECTED...AND SHOULD LEAD TO WIDESPREAD COVERAGE OF RAINFALL ACROSS THE LOCAL ISLANDS AND WATERS. DOPPLER RADAR HAS ESTIMATED PERSISTENT BANDS OF THUNDERSTORMS ACROSS THE NW WATERS OVERNIGHT HAVE PRODUCED 8-10 INCHES. TJSJ OBSERVATION AT SUNRISE SHOWED 80 DEGREES...WITH LOCAL DEWPOINTS IN THE MID 70S...REFLECTING THE AVAILABLE MOISTURE. THUS HEAVY RAINFALL IS LIKELY ACROSS PORTIONS OF THE LOCAL AREA TODAY...LEADING TO URBAN AND STREAM FLOODING...AND ISOLATED AREAS OF FLASH FLOODING AND MUDSLIDES. SELY LLVL FLOW WOULD SUGGEST THE NORTHERN SLOPES AND NW INTERIOR OF THE ISLAND TO BE THE FOCUS OF HEAVY RAINS THIS AFTERNOON...WHILE ACTIVITY WILL BE MORE HIT AND MISS ACROSS THE VIRGIN ISLANDS IN PASSING SHOWERS AND TSTORMS. LLVL MOISTURE IS FORECAST TO PERSIST INTO THE EVENING HOURS BEFORE BEGINNING TO CLEAR OUT AROUND MIDNIGHT TONIGHT...WITH DRIER LOW TO MID LEVEL AIR IN THE FORM OF SAL ADVECTING INTO THE AREA SUNDAY DURING THE DAY...BUT WILL LIKELY BE TOO LATE TO INHIBIT DIURNAL CONVECTION ACROSS P.R. VERY GOOD LOOKING TROPICAL WAVE HAS EXITED AFRICA IN THE PAST 12 HOURS AND GLOBAL MODELS SEEM TO LIKE THIS WAVE TO VARYING DEGREES. THIS MAY BE ONE OF THE BEST WAVES OF THE SEASON THUS FAR...AND BEARS WATCHING FOR THE LOCAL AREA. MODELS BRING A TROPICAL LOW ASSOCIATED WITH THIS WAVE TO THE VICINITY OF THE NE CARIB FOR NEXT SUN-MON WITH ANOTHER WELL ORGANIZED WAVE OR LOW FOLLOWING NOT FAR BEHIND. THIS COMING WEEK MAY THEREFORE YIELD ANOTHER SPURT OF TROPICAL ACTIVITY ACROSS THE ATLANTIC BASIN. LETS ALL BE READY && .PRELIMINARY POINT TEMPS/POPS... SJU 88 80 88 80 / 70 40 40 30 STT 87 80 87 80 / 70 40 40 50 && .SJU WATCHES/WARNINGS/ADVISORIES... PR...NONE. VI...NONE. && 70
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN JUAN PR 600 AM AST SAT AUG 20 2005 PRZ001>013-AMZ710>750-211030- 600 AM AST SAT AUG 20 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO. .DAY ONE...TODAY AND TONIGHT FOR TODAY...A BROAD AREA OF CLOUDINESS ASSOCIATED WITH THE REMNANTS OF TROPICAL DEPRESSION TEN LOCATED JUST TO THE NORTH OF PUERTO RICO...IS EXPECTED TO MOVE WEST NORTHWEST DURING THE NEXT DAY OR SO. A HIGH SURFACE PRESSURE OVER THE CENTRAL ATLANTIC WILL BE BRINGING LOW LEVEL MOISTURE TO THE LOCAL AREA WITH A EAST SOUTHEASTERLY WIND FLOW. LOCAL ISLAND EFFECTS AND DAYTIME HEATING WILL INTERACT WITH THE UNSTABLE ATMOSPHERE OVER THE LOCAL AREA TO PRODUCE NUMEROUS SHOWERS AND SCATTERED THUNDERSTORMS ACROSS THE REGIONAL WATERS AND OVER LAND THIS AFTERNOON MAINLY FOR THE INTERIOR...WEST AND THE MUNICIPALITIES ALONG THE NORTH SHORES. THERE IS A GOOD POSSIBILITY FOR ISOLATED LOCAL FLOODING IN URBAN AREAS AND SMALL STREAM...STREETS...LOW LYING AREAS AND UNDERPASSES. .DAYS TWO THROUGH SEVEN... SCATTERED SHOWERS AND SCATTERED THUNDERSTORMS ARE POSSIBLE EACH DAY OF THE WEEKEND FOR THE INTERIOR AND WEST SECTIONS OF PUERTO RICO WITH THE RISK OF LOCAL FLOODING IN URBAN AREAS AND SMALL STREAM. A TROPICAL WAVE WILL BE PASSING ACROSS THE LOCAL AREA TODAY INTO SUNDAY AND THE COMBINATION OF THIS FEATURE WITH THE REMNANT OF TROPICAL DEPRESSION TEN WILL PRODUCE SHOWER AND THUNDERSTORM ACTIVITY ON SUNDAY...THEN A SLIGHT IMPROVEMENT IS LIKELY FOR SUNDAY NIGHT AND MONDAY. THEN...A MORE NORMAL WEATHER CONDITION PATTERN FOR THE SEASON WILL PREVAIL...WITH SHOWERS AND STORMS DEVELOPING DURING THE AFTERNOON HOURS DUE TO LOCAL EFFECTS AND DIURNAL HEATING. THE NEXT TROPICAL WAVE WILL APPROACH THE LOCAL AREA BY THE END OF THE WORK WEEK. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. VIZ001-002-AMZ720>730-211030- 600 AM AST SAT AUG 20 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE U.S. VIRGIN ISLANDS. .DAY ONE...TODAY AND TONIGHT FOR TODAY...UNSETTLED WEATHER CONDITIONS ARE EXPECTED FOR MOST OF THE LOCAL ISLANDS TODAY. A BROAD AREA OF CLOUDINESS ASSOCIATED WITH THE REMNANTS OF TROPICAL DEPRESSION TEN LOCATED NORTH OF THE LOCAL ISLANDS...IS EXPECTED TO MOVE WEST NORTHWEST DURING THE NEXT DAY OR SO. A HIGH SURFACE PRESSURE OVER THE CENTRAL ATLANTIC WILL BE BRINGING LOW LEVEL MOISTURE TO THE LOCAL AREA WITH A EAST SOUTHEASTERLY WIND FLOW. LOCAL ISLAND EFFECTS AND DAYTIME HEATING WILL INTERACT WITH THE UNSTABLE ATMOSPHERE OVER THE LOCAL AREA TO PRODUCE NUMEROUS SHOWERS AND SCATTERED THUNDERSTORMS ACROSS THE REGIONAL WATERS AND OVER THE ISLANDS THIS AFTERNOON. THE RISK OF ISOLATED LOCAL FLOODING IN URBAN AREAS AND GUTS IS POSSIBLE. .DAYS TWO THROUGH SEVEN... SCATTERED SHOWERS AND SCATTERED THUNDERSTORMS ARE POSSIBLE EACH DAY OF THE UPCOMING WEEK WITH THE RISK OF ISOLATED LOCAL FLOODING IN URBAN AREAS AND GUTS. A SLIGHT IMPROVEMENT ON THE WEATHER CONDITIONS ARE LIKELY TO HAPPEN SUNDAY EVENING INTO MONDAY. THEN...A MORE NORMAL WEATHER CONDITIONS PATTERN FOR THE SEASON WILL PREVAIL...WITH SHOWERS AND STORMS DEVELOPING DURING THE AFTERNOON HOURS DUE TO LOCAL EFFECTS...DIURNAL HEATING AND THE ADJACENT WARM WATERS. THE NEXT TROPICAL WAVE WILL APPROACH THE LOCAL ISLANDS BY THE END OF THE WORK WEEK. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. 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.
River Mameyes was reported out of its banks and flooding road 191. Persons were reported trapped inside a vehicle.
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, August 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: 5470560.