Residual moisture associated with Tropical Storm Gabriell, combined with a southeasterly wind flow at the surface, produced showers and thunderstorms over the southern slopes of Puerto Rico.
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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.
Residual moisture associated with Tropical Storm Gabriell, combined with a southeasterly wind flow at the surface, produced showers and thunderstorms over the southern slopes of Puerto Rico.
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 7, 9:53 PM AST, 1 hour 7 minutes earlier.
AREA FORECAST DISCUSSION...CORRECTED NATIONAL WEATHER SERVICE SAN JUAN PR 953 PM AST SAT SEP 7 2013 .UPDATE...IR SATELLITE IMAGERY HAVE INDICATED AREAS OF SHOWERS AND THUNDERSTORMS ASSOCIATED WITH THE REMNANTS OF GABRIELLE...ACROSS THE MONA PASSAGE AND THE CARIBBEAN WATERS. AN AREA OF LOW PRESSURE NORTH OF THE HISPANOLA IS PULLING ALL OF THIS REMNANTS NORTHWARD ACROSS THE NORTHEAST CARIBBEAN ISLANDS. IN THE LAST FEW HOURS... DOPPLER RADAR IMAGERY HAVE SHOWED SOME FEEDING BAND DEVELOPING ACROSS THE MONA PASSAGE AND THE COASTAL WATERS OF SOUTHERN PUERTO RICO. ATTM...THE BEST MOISTURE CONVERGENCE IS OCCURRING ALONG THE MONA PASSAGE. IT APPEARS THAT SOME OF THESE SHOWERS AND THUNDERSTORMS COULD AFFECT PORTIONS OF SOUTHERN AND WESTERN PUERTO RICO DURING OVERNIGHT HOURS AND EARLY SUNDAY MORNING. SOME CHANGES WERE MADE TO THE SHORT TERM FORECAST GRIDS TO ACCOMMODATED THE FORECAST WITH ONGOING SITUATION. && .AVIATION...SCT-BKN LAYERS OF CLOUDINESS EXPECTED TO ENCOMPASS THE LOCAL FLYING REGION THROUGH THE ENTIRE PRD AS THE REMNANTS OF GABRIELLE PULLS FURTHER NORTH OF THE AREA. ISOLD-SCT SHRA/ISOLD TSRA WILL MOVE ACROSS THE LOCAL WATERS AND ONLY BRIEFLY AFFECT PARTS OF THE EAST COASTAL SECTIONS OF PR AND PARTS OF THE USVI. MOSTLY VFR CONDS EXPECTED AT ALL TAF SITE EXCEPT FOR BRIEF PASSING SHRA NR TJNR..TJSJ...TIST...TISX AND NRN LEEWARDS THIS MAY LEAD TO BRIEF PDS OF MVFR. MTN TOP OBSCR DUE TO LOW SCUD CLDS AND -RA PSBL OVR ERN PR.SOUTHERLY VEERING WINDS OF 10-15 KTS BLO FL200 BCMG WESTERLY 10 TO 15 KTS ABV AND UP TO FL 350. && .MARINE...MODERATE WINDS AND SEAS OF 3-5 FEET WILL PREVAIL OVER THE NEXT SEVERAL DAYS. THE MAIN HAZARD TONIGHT AND EARLY SUNDAY WILL BE THE THUNDERSTORM ACTIVITY OVER THE MONA PASSAGE AND THE CARIBBEAN WATERS. && .PREV DISCUSSION... /ISSUED 253 PM AST SAT SEP 7 2013/ SYNOPSIS...LINGERING MOISTURE ASSOCIATED WITH THE REMNANTS OF GABRIELLE WILL CONTINUE TO PRODUCE SHOWERS AND THUNDERSTORMS ACROSS THE SURROUNDING WATERS AND PARTS OF THE LOCAL ISLANDS UNTIL SUNDAY. WEATHER CONDITIONS ARE EXPECTED TO IMPROVE LATE SUNDAY AND EARLY NEXT WEEK. TUTT LOW ACROSS THE CENTRAL ATLANTIC WILL MOVE OVER THE REGION BY WEDNESDAY. DISCUSSION...LATEST SATELLITES IMAGES THIS AFTERNOON DEPICTED A LARGE AREA OF CLOUDINESS ACROSS THE LOCAL ISLANDS AND THE SURROUNDING WATERS. THIS MOISTURE WAS ASSOCIATED WITH THE REMNANTS OF TROPICAL STORM GABRIELLE. THIS CLOUDINESS INHIBITED THE DEVELOPMENT OF SHOWERS AND THUNDERSTORMS ACROSS THE LOCAL ISLANDS SO FAR THIS AFTERNOON. HOWEVER...THE DOPPLER WEATHER RADAR DETECTED SHOWERS AND THUNDERSTORMS MAINLY ACROSS THE SURROUNDING COASTAL WATERS WITH SOME OF THEM AFFECTING THE EASTERN HALF OF PUERTO RICO AS WELL AS VIEQUES...CULEBRA AND THE U.S.V.I LATE IN THE MORNING AND EARLY THIS AFTERNOON. THE GFS MODEL GUIDANCE SUGGESTS THAT LINGERING MOISTURE WILL CONTINUE ACROSS THE REGION THIS EVENING AND THRU EARLY SUNDAY AS THE REMNANTS OF GABRIELLE CONTINUE TO MOVE SLOWLY TO THE NORTH NORTHWEST FOR THE NEXT FEW DAYS. AS THE LOCAL WIND FLOW TURN MORE FROM THE EAST...EARLY NEXT WEEK...A DRY TREND IS EXPECTED TO ENCOMPASS THE REGION FROM THE EAST. THE CHANGE IN WIND DIRECTION...WILL INDUCE A RETURN TO THE TYPICAL OR NORMAL SUMMER WEATHER PATTERN OF AFTERNOON SHOWERS AND THUNDERSTORMS OVER WESTERN AND INTERIOR SECTIONS OF PUERTO RICO. AVIATION...DESPITE CLDS...VFR DOMINATE AT LOCAL TAF SITES ALTHO WITH SOME SCT SHRA/TSRA ACROSS THE REGION...XPCT BRIEF PDS OF MVFR AND IFR PSBL WI LO VSBYS. S TO SE WINDS SFC-FL100 5-15 KT TODAY AND TONITE. MARINE...RATHER QUIET MARINE CONDITIONS WILL CONTINUE ACROSS THE REGION TONIGHT AND SUNDAY WITH WINDS OF 16 KNOTS OR LESS AND SEAS OF 4 FEET OR LESS. && .PRELIMINARY POINT TEMPS/POPS... SJU 78 86 78 91 / 20 30 0 20 STT 78 88 79 90 / 30 30 20 20 && .SJU WATCHES/WARNINGS/ADVISORIES... PR...NONE. VI...NONE. COASTAL WATERS...NONE. && 09/11
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN JUAN PR 527 AM AST SAT SEP 7 2013 AMZ710>745-PRZ001>013-080930- SAN JUAN AND VICINITY-NORTHEAST-SOUTHEAST-EASTERN INTERIOR- NORTH CENTRAL-CENTRAL INTERIOR-PONCE AND VICINITY-NORTHWEST- WESTERN INTERIOR-MAYAGUEZ AND VICINITY-SOUTHWEST-CULEBRA-VIEQUES- THE NEARSHORE AND OFF SHORE ATLANTIC AND CARIBBEAN COASTAL WATERS- 527 AM AST SAT SEP 7 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO AND THE ADJACENT ATLANTIC COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. AMZ715-725-VIZ001-002-080930- ST. THOMAS ST. JOHN ADJACENT ISLANDS-ST CROIX- NEARSHORE ATLANTIC AND ADJACENT CARIBBEAN COASTAL WATERS- 527 AM AST SAT SEP 7 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE U.S. VIRGIN ISLANDS AND THE ADJACENT COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
Ponce emergency managers reported street flooding across the city of Ponce.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Puerto Rico in 2013Every state in 2013This day in weather historyWarnings in Puerto Rico, September 2013
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: 478663.