Trailing moisture associated with the outer bands of tropical storm Tomas produced gusty winds and periods of moderate to heavy rainfall across the Caribbean waters. A generally unsettled weather pattern prevailed days after over the local islands due to the deep tropical moisture that was feeding into the storm.
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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.
Trailing moisture associated with the outer bands of tropical storm Tomas produced gusty winds and periods of moderate to heavy rainfall across the Caribbean waters. A generally unsettled weather pattern prevailed days after over the local islands due to the deep tropical moisture that was feeding into the storm. This unsettled weather was responsible for serious flooding mainly across the municipalities of the central interior,south and southwest sections 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 Nov 5, 3:43 PM AST, 6 hours 58 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JUAN PR 343 PM AST FRI NOV 5 2010 .SYNOPSIS...DEEP TROPICAL MOISTURE FEEDING INTO HURRICANE TOMAS WILL CONTINUE TO BRING OCCASIONAL SHOWERS AND THUNDERSTORMS ACROSS PARTS OF THE LOCAL ISLANDS AND COASTAL WATERS FOR THE NEXT SEVERAL DAYS. && .DISCUSSION...HURRICANE TOMAS CONTINUES TO INTENSIFY...PULLING DEEP TROPICAL MOISTURE ACROSS THE LOCAL FORECAST AREA. DUE TO THE TIGHT PRESSURE GRADIENT ACROSS THE LOCAL ISLANDS...BREEZY AND OCCASIONALLY GUSTY WINDS HAVE DEVELOPED ACROSS MUCH OF THE AREA TODAY. EXPECT THE PRESSURE GRADIENT TO RELAX A BIT OVERNIGHT AND THE WINDS TO BECOME MORE SOUTHERLY ON SATURDAY AS HURRICANE TOMAS MOVES INTO THE SOUTHWESTERN ATLANTIC. SIGNIFICANT CHANGES IN LATEST RUN OF GFS...BUT MAJORITY OF LATEST GUIDANCE TRACKS TAKE TOMAS WELL NORTH OF THE LOCAL ISLANDS OVER THE NEXT SEVERAL DAYS. THIS WOULD RESULT IN A CONTINUED RELATIVE UNSETTLED WEATHER PATTERN ACROSS THE LOCAL ISLANDS THROUGH THE MIDDLE OF NEXT WEEK...AND AS A RESULT OPTED TO KEEP INHERITED FORECAST LARGELY IN TACK. && .MARINE...INCREASING SEAS EXPECTED ACROSS THE LOCAL ATLANTIC WATERS AND CARIBBEAN PASSAGES NEXT WEEK AS SWELLS FROM HURRICANE TOMAS WILL CREATE ROUGH AND HAZARDOUS MARINE CONDITIONS ACROSS THE LOCAL WATERS BEGINNING SUNDAY NIGHT OR MONDAY. && .AVIATION...A MODERATE TO STRONG SOUTHEAST LOW LEVEL WIND FLOW CONTINUED TO TRANSPORT OCNL PATCHES OF LOW TO MID LEVEL CLOUDS WITH EMBEDDED SHRA AND ISOLD TSRA ACROSS MUCH OF THE FLYING AREA DURG THE AFTN. SOME OF THE QUICK PASSING SHOWERS WILL PRODUCE TEMPO MVFR IN LOW CIG/VSBY AT LEAST TIL 06/00Z. THEREAFTER PREVAILING VFR CONDS CAN BE EXPECTED TIL AT LEAST 06/02Z...WITH ANOTHER ROUND OF INTMT MVFR OVERNIGHT THROUGH 06/12Z IN PASSING SHRA ACROSS THE FLYING AREA. MTN TOP OBSCR PSBL ALONG PARTS OF THE CORDILLERA CENTRAL OF PR EXPECTED. && .PRELIMINARY POINT TEMPS/POPS... SJU 77 88 74 84 / 30 60 60 80 STT 78 86 76 84 / 50 50 70 80 && .SJU WATCHES/WARNINGS/ADVISORIES... PR...SMALL CRAFT ADVISORY AMZ710-715-722-725-732-735-741. VI...SMALL CRAFT ADVISORY AMZ710-715-722-725-732-735. && 09/04
HAZARDOUS WEATHER OUTLOOK FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS NATIONAL WEATHER SERVICE SAN JUAN PR 605 AM AST FRI NOV 5 2010 AMZ710>745-PRZ001>013-061015- 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- 605 AM AST FRI NOV 5 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO AND THE ADJACENT COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT FAST MOVING SHOWERS ARE POSSIBLE ACROSS PUERTO RICO THROUGH THE MORNING HOURS. DURING THE AFTERNOON...AN INCREASE IN SHOWER ACTIVITY IS EXPECTED MAINLY ACROSS THE WESTERN INTERIOR AND NORTHWEST SECTION OF PUERTO RICO. LOCALIZED HEAVY RAINS MAY PRODUCE URBAN AND SMALL STREAM FLOODING OVER THESE AREAS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY DEEP TROPICAL MOISTURE FLOWING INTO TROPICAL CYCLONE TOMAS NORTHWEST THEN NORTH OF THE AREA FRIDAY THROUGH TUESDAY MAY HAVE WIDESPREAD AND VERY HEAVY RAINFALL WHICH COULD GENERATE FLOODING ACROSS PUERTO RICO. .SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED TODAY. AMZ715-725-VIZ001-002-061015- ST. THOMAS ST. JOHN ADJACENT ISLANDS-ST CROIX- NEARSHORE ATLANTIC AND ADJACENT CARIBBEAN COASTAL WATERS- 605 AM AST FRI NOV 5 2010 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. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY RAINFALL IS EXPECTED TO BE ABOVE NORMAL SATURDAY THROUGH AT LEAST TUESDAY. LOCALIZED GUT FLOODING AND MUDSLIDES WILL BE POSSIBLE DURING THIS TIME. .SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY.
The San Juan radar (TJUA), 53 km away, was scanning. The volume nearest the first event began at 02:40 UTC.
6 flash flood. Local standard time, as filed.
U.S.G.S river sensor indicated Rio Cerrillos went out of its banks in the municipality of Ponce.
Rio de La Plata in Aibonito went out of its banks.
Rio de La Plata at Comerio went out of its banks.
Access to the airport at Mercedita was reported impassable.
Road 114 was reported flooded and impassable due to Rio Gunajibo out of its banks.
Road 14 and Las Americas avenue were reported flooded in the municipality of Ponce.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Puerto Rico in 2010Every state in 2010This day in weather historyWarnings in Puerto Rico, November 2010
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 2026-09-30. Each event’s entry at NCEI: 266959, 268044, 268045, 268046, 268047, 266527.