A broad low pressure trough across the Central Caribbean extended northward into the Western Atlantic was helping to maintain a moist south to southeast wind flow across the region which combined with local effects and favorable upper level winds to generate scattered to numerous showers and strong thunderstorms over the north half and east sections of Puerto Rico during the afternoon. Several…
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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.
A broad low pressure trough across the Central Caribbean extended northward into the Western Atlantic was helping to maintain a moist south to southeast wind flow across the region which combined with local effects and favorable upper level winds to generate scattered to numerous showers and strong thunderstorms over the north half and east sections of Puerto Rico during the afternoon. Several municipalities were affected by heavy rains.
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 Jun 11, 11:25 AM AST, 2 hours 53 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JUAN PR 1125 AM AST THU JUN 11 2009 .UPDATE... A BROAD SURFACE TROUGH EXTENDING FROM THE CARIBBEAN BASIN INTO THE WEST ATLANTIC...AND HIGH PRESSURE EXTENDING FROM THE EAST CENTRAL ATLANTIC SOUTHWEST TO THE NORTHEAST CARIBBEAN WILL MAINTAIN A MOIST AND UNSTABLE SOUTHEAST WIND ACROSS THE NORTHEAST CARIBBEAN AT LEAST THROUGH SUNDAY.IN THE UPPER LEVELS...BROAD ANTICYCLONIC FLOW ACROSS THE LOCAL REGION...WITH AMPLIFYING TROUGH ACROSS THE WESTERN ATLANTIC WILL MAINTAIN UPPER LEVEL WESTERLIES ACROSS THE REGION OVER THE NEXT FEW DAYS. THE MOIST SOUTHEASTERLY WIND FLOW COMBINED WITH DAYTIME HEATING AND LOCAL EFFECTS...ALONG WITH FAVORABLE UPPER LEVEL CONDITIONS... WILL HELP GENERATE PERIODS OF SHOWERS AND ISOLATED THUNDERSTORMS WITH GUSTY WINDS ACROSS PARTS OF THE NORTHERN HALF OF PUERTO RICO..AS WELL AS OVER PARTS OF CULEBRA..VIEQUES AND THE U.S. VIRGIN ISLANDS THROUGH MUCH OF THE AFTERNOON HOURS. MADE SOME MINOR ADJUSTMENTS TO THE SHORT TERM GRIDS BASED ON LATEST GFS MODEL GUIDANCE AND PRESENT CONDITIONS...BUT OVERALL THE INHERITED FORECAST GRIDS LOOKS GOOD FOR NOW. && .AVIATION UPDATE...AREA OF SHOWERS AND ISOLATED THUNDERSTORMS CONTINUED TO MOVE WEST NORTHWEST ACROSS THE EASTERN CARIBBEAN AND AFFECT THE LOCAL ISLANDS. SOME OF THE SHOWERS AND STORMS REACHED PARTS OF THE U.S. VIRGIN ISLANDS AND THE EAST SECTIONS OF PUERTO RICO PRODUCING BRIEF MVFR/IFR CONDITIONS. DUE TO THE LIGHT SOUTHERLY WIND FLOW AFTERNOON CONVECTION WILL BE FOCUSED ACROSS THE NORTHERN HALF OF PUERTO RICO WITH TJNR...TJSJ...TJBQ AND TJMZ BEING INTERMITTENTLY AFFECTED WITH MVFR/IFR CONDITIONS BTWN 11/15Z-11/21Z. && .PREV DISCUSSION... /ISSUED 449 AM AST THU JUN 11 2009/ SYNOPSIS...SURFACE HIGH PRESSURE WILL CONTINUE TO EXTEND FROM THE EAST CENTRAL ATLANTIC SOUTHWEST TO THE NORTHEAST CARIBBEAN THROUGH AT LEAST SUNDAY. DISCUSSION...THE DOPPLER RADAR IS SHOWING AN INCREASE ON SHOWER COVERAGE ACROSS THE EASTERN CARIBBEAN WATERS. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS AFFECTED THE LOCAL ISLAND AND THE SOUTHEAST COAST OF PUERTO RICO. THE LATEST SATELLITE IMAGES ARE SHOWING A LARGE AREA OF SHOWERS AND THUNDERSTORMS SOUTH OF THE HISPANIOLA. THIS WEATHER ACTIVITY IS ASSOCIATED TO A UPPER LEVEL TROUGH THAT EXTENDS OVER THE NORTH CENTRAL CARIBBEAN WATERS. THE GFS MODEL IS SUGGESTING MOST OF THE WEATHER ACTIVITY MOVING NORTH ACROSS THE MONA PASSAGE BUT LATEST RUN OF THE NAM12 IS SUGGESTING THIS BOUNDARY MOVING SLIGHTLY MORE EAST...INCREASING SIGNIFICANTLY THE SHOWERS COVERAGE ACROSS THE LOCAL FORECAST AREA FOR THE NEXT 48 HOUR. SATELLITE IMAGES ARE ALREADY SHOWING A THIS BOUNDARY WITH A MORE EASTERLY MOVEMENT. THIS WEATHER FEATURE PROMISE A LARGE AMOUNT OF AVAILABLE MOISTURE ACROSS THE REGION THROUGH AT LEAST SATURDAY. THEREFORE EXPECT SHOWERS AFFECTING THE SOUTHERN AND EASTERN COAST OF PUERTO RICO IN THE OVERNIGHT HOURS AND AFTERNOON CONVECTION AFFECTING THE NORTHERN HALF OF PUERTO RICO. AVIATION...PASSING SHRA WITH ISO TSRA OVERNIGHT TO CONTINUE THROUGH 13Z AFFECTING PRIMARILY TIST AND TISX WITH TEMPO MVFR CIGS/VSBYS. AFTERWARDS...LIGHT SE FLOW EXPECTED AGAIN THIS AFTERNOON WITH CONVECTION FOCUSED OVER TJBQ WHERE TSRA IN MVFR CONDITIONS 18Z-21Z AND TEMPO IFR LIKELY. MARINE...TRANQUIL MARINE CONDITIONS WILL PREVAIL ACROSS ALL LOCAL WATERS THROUGH AT LEAST THE INCOMING WEEK. SEAS 3 TO 5 WILL BE AT AROUND 4 FEET AND WINDS WILL AT AROUND 10 KNOTS WITH HIGHER GUST ALONG THE COASTAL SECTIONS. && .PRELIMINARY POINT TEMPS/POPS... SJU 88 78 89 78 / 50 20 20 20 STT 88 76 86 76 / 70 20 20 20 && .SJU WATCHES/WARNINGS/ADVISORIES... PR...NONE. VI...NONE. && 09/37
HAZARDOUS WEATHER OUTLOOK FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS NATIONAL WEATHER SERVICE SAN JUAN PR 447 AM AST THU JUN 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- 447 AM AST THU JUN 11 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO AND THE ADJACENT COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT SHOWERS AND THUNDERSTORMS ARE EXPECTED TO REFORM OVER THE NORTHWEST AND WEST CENTRAL PORTIONS OF PUERTO RICO WITH HEAVY RAIN. SOME AREAS WILL EXPERIENCE URBAN AND SMALL STREAM FLOODING AND LARGER RIVERS OF THE NORTHWEST MAY COME NEAR MINOR FLOOD STAGE BY THIS EVENING. RAIN AMOUNTS WILL LIKELY EXCEED 4 INCHES IN THE AREAS WITH THE HEAVIEST RAIN. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY NO HAZARDOUS WEATHER EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... AMZ715-725-VIZ001-002-121000- ST. THOMAS ST. JOHN ADJACENT ISLANDS-ST CROIX- NEARSHORE ATLANTIC AND ADJACENT CARIBBEAN COASTAL WATERS- 447 AM AST THU JUN 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 EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY NO HAZARDOUS WEATHER EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT...
The San Juan radar (TJUA), 46 km away, was scanning. The volume nearest the first event began at 18:15 UTC.
3 heavy rain, 1 flash flood. Local standard time, as filed.
Urban and street flooding was reported at Barrio Fortuna, El Cerro sector, in the municipality of Luquillo. Road 983 was also reported flooded near the Catholic Church.
Urban flooding was reported along road 991, KM. 5.5, at Barrio Sabana in the municipality of Luquillo. A nearby elderly home reported a flooded room.
Highway 2 was reported flooded at the Espinoza sector in the municipality of Dorado.
River Cibuco was reported out of its banks in Sector Fatima of Vega Alta and was flooding over road 620.
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, June 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: 184334, 184332, 184344, 185876.