A generally fair and mainly dry weather pattern prevailed across Puerto Rico during most of the month. This pattern of limited low level moisture and stable conditions helped to suppress significant afternoon convection and provided conditions favorable for wild fires.
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 generally fair and mainly dry weather pattern prevailed across Puerto Rico during most of the month. This pattern of limited low level moisture and stable conditions helped to suppress significant afternoon convection and provided conditions favorable for wild fires.
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 27, 10:16 AM AST, 1 hour 29 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE SAN JUAN PR 1016 AM AST SUN FEB 27 2011 .SYNOPSIS...MID LEVEL HIGH PRES WILL BE FORCED WWD OVR THE NEXT SVRL DAYS AS POLAR TROF DEEPENS ACROSS ERN NOAM AND THE WRN ATLC. SFC HIGH PRES TO THE NORTH WILL MAINTAIN A FRESH TRADE WIND FLOW THRU MON WITH TRADES ABATING SIGNIFICANTLY ON TUE. && .DISCUSSION...STRATOCU SHOWING SIGNS OF MIXING OUT BASED ON LATEST VIS IMAGES. ANTICIPATE MAINLY SUNNY SKIES MOST AREAS DURING THE AFTERNOON. 12Z RAOB SHOWS A VERY STRONG SUBSIDENCE INVERSION AROUND 7KFT. STRONG WINDS WILL RESULT IN CONTINUED MIXING OF BDRY LYR AND THUS LOWERING OF SFC DEWPOINTS/RH. NO RAINFALL EXPECTED THIS AFTERNOON. && .AVIATION...IMPROVING CIGS REST OF THIS AFTERNOON AS STRATOCU MIXES OUT. WINDS WILL BE QUITE GUSTY WITH MAINLY EAST WINDS 16G25KT. && .MARINE...SEAS IN THE 6-8 FT RANGE ALL WATERS XCPT SOUTHWEST DUE TO EAST GENERATED WIND WAVES AND NNE SWELLS. CONDITIONS DO NOT IMPROVE UNTIL TUE WHEN WINDS SLACKEN SUBSTANTIALLY. && .FIRE WEATHER...NEAR CRITICAL TO CRITICAL FIRE WX CONDITIONS EXPECTED THIS AFTERNOON ACROSS THE SOUTH COAST AND ST. CROIX DUE TO FRESH TRADE WINDS...LOW RH AND FUEL MOISTURE VALUES. RECENT WILDLAND FIRE ACTIVITY IN NEAR THE VILLALBA/OROCOVIS (2300FT) AND ARROYO/PATILLAS COUNTY LINES YESTERDAY STRONGLY SUGGEST THAT VEGETATION HEALTH IS BECOMING MORE SUSCEPTIBLE TO BURNING EVEN AT THE HIGHER ELEVS. && .PRELIMINARY POINT TEMPS/POPS... SJU 82 72 82 72 / 10 40 40 20 STT 82 73 84 73 / 10 20 20 20 && .SJU WATCHES/WARNINGS/ADVISORIES... PR...NONE. VI...NONE. && 64/64
HAZARDOUS WEATHER OUTLOOK FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS...UPDATED NATIONAL WEATHER SERVICE SAN JUAN PR 959 AM AST SUN FEB 27 2011 AMZ710>745-PRZ001>013-281000- 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- 959 AM AST SUN FEB 27 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO AND THE ADJACENT ATLANTIC COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT NEAR CRITICAL FIRE WEATHER CONDITIONS EXPECTED THIS AFTERNOON ACROSS THE SOUTH COAST DUE TO STRONG WINDS...LOW RELATIVE HUMIDITIES AND LOW FUEL MOISTURE VALUES. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY NEAR CRITICAL FIRE WEATHER CONDITIONS EXPECTED ON MONDAY ACROSS THE SOUTH COAST DUE TO STRONG WINDS...LOW RELATIVE HUMIDITIES AND FUEL MOISTURE VALUES. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. AMZ715-725-VIZ001-002-281000- ST. THOMAS ST. JOHN ADJACENT ISLANDS-ST CROIX- NEARSHORE ATLANTIC AND ADJACENT CARIBBEAN COASTAL WATERS- 959 AM AST SUN FEB 27 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE U.S. VIRGIN ISLANDS AND THE ADJACENT COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT NEAR CRITICAL FIRE WEATHER CONDITIONS EXPECTED THIS AFTERNOON ESPECIALLY ACROSS SAINT CROIX DUE TO STRONG WINDS...LOW RELATIVE HUMIDITIES AND FUEL MOISTURE VALUES. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY NEAR CRITICAL FIRE WEATHER CONDITIONS EXPECTED ON MONDAY ESPECIALLY ACROSS SAINT CROIX DUE TO STRONG WINDS...LOW RELATIVE HUMIDITIES AND FUEL MOISTURE VALUES. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT.
1 wildfire. Local standard time, as filed.
One house was completed destroyed in the sector Ranchos between the Guayama and Salinas municipalities. Two families were forced to evacuate their homes.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Puerto Rico in 2011Every state in 2011This day in weather historyWarnings in Puerto Rico, February 2011
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: 275426.