The combination of an upper level trough and a tropical wave provided ample moisture which produced heavy rain across this area.
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 episode as NWS SJU wrote it up.
The combination of an upper level trough and a tropical wave provided ample moisture which produced heavy rain across this area.
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 23, 4:05 PM AST, 25 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JUAN PR 405 PM AST THU AUG 23 2007 .DISCUSSION...NELY FLOW OUT AHEAD OF APPROACHING SURFACE TROUGH EXTENDING NNW FROM THE LEEWARDS...IS COMBINING WITH DIURNAL FORCING AND SOME MILD UPPER INSTABILITY INDUCED BY TUTT NEARING THE REGION TO PRODUCE ISOLATED DEEP TOPS IN EXCESS OF 5OK FT ACROSS SW PR. TROUGH AND ASSOCIATED LLVL MOISTURE WILL MOVE W ACROSS THE AREA THIS EVENING THROUGH FRIDAY MORNING TO YIELD SCATTERED SHOWERS AND ISOLATED TSTORMS...SOME PRODUCING HEAVY RAINFALL. TUTT LOW NEAR 56W WILL CONTINUE TO DRIFT WSW NEXT SEVERAL DAYS AND THEN IS FORECAST TO BEGIN TO SLOWLY LIFT OUT TO THE NNW SUNDAY THROUGH TUESDAY. IT IS THUS DIFFICULT TO SAY EXACTLY HOW THIS WILL AFFECT OUR LOCAL UPPER STABILITY FROM SUNDAY ON AND WILL HAVE TO EVALUATE WITH FURTHER MODEL RUNS. WEAK HIGH SURFACE PRESSURE AND AN ESE SURFACE FLOW AND SELY LLVL FLOW...WITH MODEST MOISTURE ARE EXPECTED TO PREVAIL SUNDAY THROUGH MID WEEK FOR SCATTERED RAIN COVERAGE EACH DAY. NO SIGNIFICANT CHANGES TO RECENT SYNOPTIC REASONING. && .PRELIMINARY POINT TEMPS/POPS... SJU 78 89 78 89 / 40 40 20 30 STT 80 86 80 86 / 50 20 40 40 && .SJU WATCHES/WARNINGS/ADVISORIES... PR...NONE. VI...NONE. && 99/99
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN JUAN PR 600 AM AST THU AUG 23 2007 PRZ001>013-AMZ710>750-241000- 600 AM AST THU AUG 23 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO. .TODAY AND TONIGHT...A PASSING TROPICAL WAVE WILL YIELD AN INCREASE IN MOISTURE AND SHOWERS. SOME OF THESE STORMS COULD BE HEAVY AT TIMES...RESULTING IN URBAN AND SMALL STREAM FLOODING IN LOCAL AREAS...MAINLY IN INTERIOR AND WESTERN PORTIONS OF PUERTO RICO. SCATTERED THUNDERSTORMS ARE EXPECTED IN THESE SAME AREAS. .DAYS TWO THROUGH SEVEN...AFTERNOON THUNDERSTORMS IN THE WESTERN SECTIONS OF PUERTO RICO WILL POSE SOME RISK OF LOCALIZED URBAN AND SMALL STREAM FLOODING. NO OTHER HAZARDOUS WEATHER IS EXPECTED. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY. VIZ001-002-AMZ710>730-241000- 600 AM AST THU AUG 23 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE U.S. VIRGIN ISLANDS. .TODAY AND TONIGHT...ISOLATED THUNDERSTORMS ARE POSSIBLE DURING THE WAVE PASSAGE TODAY. NO OTHER HAZARDOUS WEATHER IS EXPECTED. .DAYS TWO THROUGH SEVEN...ISOLATED THUNDERSTORMS ARE EXPECTED FROM TIME TO TIME DURING THE PASSAGE OF MOIST BANDS. OTHERWISE NO OTHER HAZARDOUS WEATHER IS EXPECTED. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY. 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 FROM YOUR PDA/PHONE: HTTP://MOBILE.SRH.NOAA.GOV OR WWW.SRH.NOAA.GOV/WML SNELL
The national radar mosaic for the moment the first event began.
1 heavy rain. Local standard time, as filed.
Emergency Management reported Barrio Maraguez in Ponce flooded due to heavy rain.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Puerto Rico in 2007Every state in 2007This day in weather historyWarnings in Puerto Rico, August 2007
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: 54664.