Scattered to numerous showers and isolated thunderstorms developed over the western interior section of Puerto Rico during the afternoon. Some of these moved west northwest across the municipality of Anasco causing wind damage.
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.
Scattered to numerous showers and isolated thunderstorms developed over the western interior section of Puerto Rico during the afternoon. Some of these moved west northwest across the municipality of Anasco causing wind damage.
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 Jul 11, 10:44 AM AST, 3 hours 10 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JUAN PR 1044 AM AST SAT JUL 11 2009 .UPDATE...NO CHANGES WERE DONE TO THE PREVIOUS FORECAST REASONING. && .AVIATION...EXPECT PREVAILING VFR CONDITIONS ACROSS THE LOCAL ISLANDS AND AT ALL LOCAL TAF SITES THIS AFTERNOON. HOWEVER... BRIEF MVFR CONDITIONS AND LOCAL MOUNTAIN OBSCURATIONS ARE EXPECTED IN SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS...MAINLY OVER THE CENTRAL AND WESTERN INTERIOR AND WEST SECTIONS OF PUERTO RICO FROM 17Z THROUGH AT LEAST 22Z. && .PREV DISCUSSION... /ISSUED 454 AM AST SAT JUL 11 2009/ DISCUSSION...MAINLY FAIR AND HAZY WEATHER IS EXPECTED ACROSS THE LOCAL ISLANDS TODAY AS THE LATEST TROPICAL WAVE CONTINUES TO TRACK WEST OF THE LOCAL ISLANDS. IMPRESSIVE CONVECTIVE BLOWUP ASSOCIATED WITH THIS WAVE OVER EASTERN SECTIONS OF THE DOMINICAN REPUBLIC OVERNIGHT...BUT LITTLE EFFECT TO NOTE OVER THE LOCAL ISLANDS OR COASTAL WATERS. LATEST CIMMS IMAGERY INDICATES A MODERATE AREA OF SAL ENTERING THE EASTERN CARIBBEAN...WITH ANTIGUA REPORTING DUST LATE FRIDAY EVENING AS THE THIS AREA OF SAL WAS FIRST ENTERING THE CARIBBEAN. DO NOT EXPECT SIGNIFICANTLY REDUCED VISIBILITIES WITH THIS NEXT BATCH OF DUST...MAINLY JUST HAZY SKIES AND LIMITED SHOWER ACTIVITY. SOME DIURNALLY INDUCED CONVECTION OVER THE INTERIOR AND WESTERN SECTIONS OF PUERTO RICO CAN BE EXPECTED LATER IN THE DAY...BUT ONLY VERY ISOLATED SHOWER ACTIVITY IS EXPECTED ELSEWHERE. FOR THE REMAINDER OF THE WEEKEND INTO EARLY NEXT WEEK...EXPECT CONTINUED LIMITED SHOWER ACTIVITY ACROSS THE LOCAL ISLANDS EACH DAY WITH SOME DIURNALLY INDUCED SHOWERS EXPECTED OVER THE INTERIOR AND WESTERN SECTIONS OF PUERTO RICO BOTH SUNDAY AND MONDAY AFTERNOONS. A FAIRLY STRONG TUTT LOW IS FORECAST TO FORM OVER THE SOUTHERN BAHAMAS EARLY IN THE WEEK...BEFORE RETROGRADING WESTWARD...BUT LITTLE INFLUENCE IN THE LOCAL WEATHER IS EXPECT WITH THIS FEATURE AT THIS TIME. THE NEXT TROPICAL WAVE IS FORECAST BY THE GFS TO HAVE A MORE NORTHERLY IMPACT ON THE LOCAL ISLANDS...AND MAY BRING AN INCREASE IN SHOWER ACTIVITY TO THE ENTIRE FORECAST AREA ON TUESDAY. AVIATION...EXPECT PREVAILING VFR CONDITIONS ACROSS THE LOCAL ISLANDS AND AT ALL LOCAL TAF SITES TODAY THROUGH TONIGHT. HOWEVER... BRIEF MVFR CONDITIONS AND LOCAL MOUNTAIN OBSCURATIONS ARE EXPECTED IN SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS...MAINLY OVER THE CENTRAL AND WESTERN INTERIOR AND WEST SECTIONS OF PUERTO RICO FROM 17Z THROUGH AT LEAST 22Z. && .PRELIMINARY POINT TEMPS/POPS... SJU 89 78 89 78 / 20 20 40 40 STT 90 79 90 78 / 30 30 40 40 && .SJU WATCHES/WARNINGS/ADVISORIES... PR...NONE. VI...NONE. && 72/10
HAZARDOUS WEATHER OUTLOOK FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS NATIONAL WEATHER SERVICE SAN JUAN PR 522 AM AST SAT JUL 11 2009 AMZ710>745-PRZ001>013-121000- 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- 522 AM AST SAT JUL 11 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO 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. AMZ715-725-VIZ001-002-121000- ST. THOMAS ST. JOHN ADJACENT ISLANDS-ST CROIX- NEARSHORE ATLANTIC AND ADJACENT CARIBBEAN COASTAL WATERS- 522 AM AST SAT JUL 11 2009 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 San Juan radar (TJUA), 114 km away, was scanning. The volume nearest the first event began at 17:54 UTC.
1 thunderstorm wind. Local standard time, as filed.
Thunderstorm wind damage was reported by Univision TV meteorologist at Barrio Humatas, Sector Ajies. A home roof was damaged, fallen trees were reported along road 4403. Damage to plantain and banana crops.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Puerto Rico in 2009Every state in 2009This day in weather historyWarnings in Puerto Rico, July 2009
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: 188291.