A weak cold front moved across Puerto Rico which resulted in cloudiness and showers. In addition, light low level winds allowed sea breeze cycle to establish,which enhanced the development of showers mainly along the north coast 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.
A weak cold front moved across Puerto Rico which resulted in cloudiness and showers. In addition, light low level winds allowed sea breeze cycle to establish,which enhanced the development of showers mainly along the north coast 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 Feb 13, 4:07 PM AST, 5 hours 23 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
407 PM AST MON FEB 13 2012
.SYNOPSIS...POLAR TROUGH WILL CONTINUE TO PROPAGATE ACROSS THE
CNTRL ATLC WITH MID-UPPER LEVEL RIDGE EXPECTED TO BUILD ACROSS THE
NORTHEAST CARIB BY EARLY NEXT WEEK. SFC FRONT TO THE NORTHWEST
WILL BECOME STATIONARY TONIGHT AND DISSIPATE BY WED.
&&
.DISCUSSION...LOW CLOUDS HAVE MOVED IN AHEAD OF SFC FRONT TO THE
NORTHWEST OF THE AREA. EXPECT THESE TO PERSIST THROUGH AT LEAST MIDDAY
TOMORROW WITH LIGHT SHOWERS OR DRIZZLE ACROSS THE ATLC COASTAL
WATERS AND AREAS NORTH OF THE CORDILLERA ON NORTHEAST UPSLOPE
WINDS. EXPECT LOW CLOUDS TO BE SLOW TO MIX OUT TOMORROW WHICH
COULD HAVE A SIGNIFICANT IMPACT ON TEMPS AND THUS POTENTIAL FOR
AFTERNOON CONVECTION. DESPITE THE INCREASE IN LOW LEVEL MOISTURE
GLOBAL AND HI-RES MODELS ARE NOT TOO ENTHUSIASTIC IN GENERATING
CONVECTIVE PRECIP TOMORROW. EXPECT WILL SEE BETTER CHANCES OF
PRECIP WED AS THERE SHOULD BE MORE HEATING WITH PLENTY OF LOW
LEVEL MOISTURE AVAILABLE.
THINGS BEGIN TO DRY OUT THU BUT THERE MIGHT BE JUST ENOUGH LOW
LEVEL MOISTURE TO GENERATE A FEW SHOWERS ACROSS THE SOUTH. THINGS
REALLY DRY OUT FOR THE WEEKEND AS AREA BECOMES UNDER UPPER
CONFLUENCE. MID-UPPER LEVEL HIGH PRES THEN BUILDS OVERHEAD OVR THE
WEEKEND PUTTING A STRONG LID ON CONVECTION. EXTENDED GRIDS ARE
LIKELY TOO PESIMISTIC IN RAINFALL CHANCES AND WILL LIKELY NEED TO
BE SCALED BACK SIGNIFICANTLY OVER THE NEXT SVRL DAYS.
&&
.AVIATION...HI-RES MODELS DO NOT SHOW CIGS DROPPING BELOW 3KFT AT
ANY OF THE TAF SITES TONIGHT OR TOMORROW SO HAVE KEPT CIGS IN VFR
CATEGORY BUT EXPECT BKN-OVC050. WINDS WILL BE LIGHT AND VARIABLE.
&&
.MARINE...SEAS WILL BUILD RAPIDLY THIS EVENING TO 10-12 FEET
IN NORTHWEST SWELLS ACROSS THE ATLC COASTAL WATERS. THIS RAPID
INCREASE IN SEAS WILL COINCIDE WITH HIGH TIDE EARLY TUE MORNING
WHICH COULD CAUSE SOME MINOR FLOODING. SMALL CRAFT OPERATORS SHOULD
RETURN TO SAFE HARBOR BEFORE SUNSET AND REMAIN IN PORT THROUGH
TOMORROW. PEOPLE ARE STRONGLY ENCOURAGED TO STAY OUT OF THE WATER
TONIGHT AND TUE DUE TO STRONG RIP CURRENTS. REFER TO COASTAL FLOOD
HAZARD MESSAGES FOR MORE DETAILS.
&&
.PRELIMINARY POINT TEMPS/POPS...
SJU 71 81 71 80 / 0 10 30 30
STT 73 82 73 82 / 0 0 20 20
&&
.SJU WATCHES/WARNINGS/ADVISORIES...
PR...HIGH SURF ADVISORY UNTIL 6 AM AST WEDNESDAY FOR CULEBRA-MAYAGUEZ
AND VICINITY-NORTH CENTRAL-NORTHEAST-NORTHWEST-SAN JUAN AND
VICINITY-WESTERN INTERIOR.
COASTAL FLOOD ADVISORY FROM 8 PM THIS EVENING TO 8 AM AST
TUESDAY FOR CULEBRA-MAYAGUEZ AND VICINITY-NORTH CENTRAL-
NORTHEAST-NORTHWEST-SAN JUAN AND VICINITY-WESTERN INTERIOR.
HIGH SURF ADVISORY FROM MIDNIGHT TONIGHT TO 6 AM AST WEDNESDAY
FOR VIEQUES.
VI...HIGH SURF ADVISORY UNTIL 6 AM AST WEDNESDAY FOR ST. THOMAS/ST.
JOHN/ADJACENT ISLANDS.
COASTAL FLOOD ADVISORY FROM 8 PM THIS EVENING TO 8 AM AST
TUESDAY FOR ST. THOMAS/ST. JOHN/ADJACENT ISLANDS.
HIGH SURF ADVISORY FROM MIDNIGHT TONIGHT TO 6 AM AST WEDNESDAY
FOR ST CROIX.
COASTAL WATERS...
SMALL CRAFT ADVISORY FROM MIDNIGHT TONIGHT TO 9 AM AST THURSDAY
FOR ANEGADA PASSAGE SOUTHWARD TO 17N.
SMALL CRAFT ADVISORY FROM MIDNIGHT TONIGHT TO 9 AM AST WEDNESDAY
FOR CARIBBEAN WATERS OF PUERTO RICO FROM 10 NM TO 17N-
COASTAL WATERS OF NORTHERN USVI AND CULEBRA OUT 10 NM-
COASTAL WATERS OF SOUTHERN USVI VIEQUES AND EASTERN PUERTO
RICO OUT 10 NM.
SMALL CRAFT ADVISORY FROM MIDNIGHT TONIGHT TO NOON AST TUESDAY
FOR COASTAL WATERS OF SOUTHERN PUERTO RICO OUT 10 NM.
SMALL CRAFT ADVISORY UNTIL MIDNIGHT AST TUESDAY NIGHT FOR
COASTAL WATERS OF SOUTHWESTERN PUERTO RICO OUT 10 NM.
SMALL CRAFT ADVISORY UNTIL 9 AM AST WEDNESDAY FOR COASTAL WATERS
OF NORTHERN PUERTO RICO OUT 10 NM-COASTAL WATERS OF
NORTHWESTERN PUERTO RICO OUT 10 NM-MONA PASSAGE SOUTHWARD
TO 17N.
SMALL CRAFT ADVISORY UNTIL 9 AM AST THURSDAY FOR ATLC WATERS OF
PUERTO RICO AND USVI FROM 10NM TO 19.5N.
&&
ROSAHAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN JUAN PR 641 AM AST MON FEB 13 2012 AMZ710>745-PRZ001>013-141045- 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- 641 AM AST MON FEB 13 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO AND THE ADJACENT ATLANTIC COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT FIRE DANGER WILL CONTINUE TO BE ELEVATED DUE TO FUELS WHICH REMAIN VERY DRY ACROSS MUCH OF THE SOUTHERN SLOPES. LARGE SWELL WILL MOVE INTO THE AREA'S NORTHERN WATERS TODAY THROUGH TUESDAY...BRINGING HIGH SURF AND DANGEROUS RIP CURRENTS TO NORTHERN EXPOSED COASTS OF PUERTO RICO. THERE IS ALSO A COASTAL FLOOD WATCH FOR THE NORTH COAST OF PUERTO RICO. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY HIGH SURF AND DANGEROUS RIP CURRENTS ARE STILL EXPECTED UNTIL AT LEAST TUESDAY ACROSS THE NORTHERN EXPOSED COASTS OF PUERTO RICO. .SPOTTER INFORMATION STATEMENT... ANY SURF OR COASTAL FLOODING REPORTS WILL BE APPRECIATED. AMZ715-725-VIZ001-002-141045- ST. THOMAS ST. JOHN ADJACENT ISLANDS-ST CROIX- NEARSHORE ATLANTIC AND ADJACENT CARIBBEAN COASTAL WATERS- 641 AM AST MON FEB 13 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE U.S. VIRGIN ISLANDS AND THE ADJACENT COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT LARGE SWELL WILL MOVE INTO THE AREA'S NORTHERN WATERS TODAY THROUGH TUESDAY...BRINGING HIGH SURF AND DANGEROUS RIP CURRENTS TO NORTHERN EXPOSED COASTS OF THE U.S. VIRGIN ISLANDS. THERE IS ALSO A COASTAL FLOOD WATCH FOR THE NORTH COAST OF SAINT THOMAS AND SAINT JOHN. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY HIGH SURF AND DANGEROUS RIP CURRENTS ARE STILL EXPECTED UNTIL AT LEAST TUESDAY ACROSS THE NORTHERN EXPOSED COASTS OF THE U.S. VIRGIN ISLANDS. .SPOTTER INFORMATION STATEMENT... ANY SURF OR COASTAL FLOODING REPORTS WILL BE APPRECIATED.
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
Fatima sector and road 620 were reported flooded.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Puerto Rico in 2012Every state in 2012This day in weather historyWarnings in Puerto Rico, February 2012
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: 362605.