A TUTT low across the western Atlantic just north of the region affected the area producing some showers and thunderstorms. A weak tropical wave continued moving westward and away of the region.
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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 TUTT low across the western Atlantic just north of the region affected the area producing some showers and thunderstorms. A weak tropical wave continued moving westward and away of the region.
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 Sep 12, 2:37 PM AST, 17 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JUAN PR 237 PM AST FRI SEP 12 2014 .SYNOPSIS...TUTT LOW ACROSS THE WESTERN ATLANTIC JUST NORTH OF REGION WILL CONTINUE CLOSE TO THE REGION FOR THE NEXT COUPLE OF DAYS. WEAK TROPICAL WAVE WILL CONTINUE TO MOVE WESTWARD AND AWAY FROM THE REGION TONIGHT. SAHARAN AIR LAYER WILL ENCOMPASS THE REGION TONIGHT AND SATURDAY. && .DISCUSSION...CLEAR TO PARTLY CLOUDY SKIES WITH LIMITED SHOWER ACTIVITY WAS DETECTED OVER THE FORECAST AREA SO FAR THIS AFTERNOON. DOPPLER WEATHER RADAR DETECTED ONLY FEW SHOWERS ACROSS NORTH CENTRAL AND NORTHWEST SECTIONS OF PUERTO RICO. HOWEVER...UNDER AN EAST SOUTHEAST WIND FLOW SOME SHOWERS ARE STILL EXPECTED TO DEVELOP ACROSS NORTHWEST PUERTO RICO DURING THE REST OF THE AFTERNOON. AN UPPER LEVEL LOW JUST NORTH NORTHEAST OF PUERTO RICO WILL REMAINS AS THE MAIN WEATHER FEATURE ACROSS THE LOCAL ISLANDS FOR THE NEXT COUPLE OF DAYS. HOWEVER THE LIMITED MOISTURE CONTENT OF THE ATMOSPHERE IN COMBINATION WITH THE SAHARAN DUST IS EXPECTED TO INHIBIT THE DEVELOPMENT OF SHOWERS AND THUNDERSTORMS ACROSS THE REGION FOR THE NEXT COUPLE OF DAYS. && .AVIATION...MOSTLY VFR CONDITIONS AND ISOLATED SHRA WITH BRIEF PERIODS MVFR POSSIBLE ARE EXPECTED TONIGHT. SHRA/TSRA LIKELY FOR TJBQ AND TJMZ UNTIL 12/22Z AS DEVELOPMENT OCCURS OVER WESTERN PR. LATEST TJSJ SOUNDING INDICATED AN EAST SOUTHEAST WIND FLOW UP TO 20 KNOTS ALL THE WAY FROM THE SURFACE TO 20K FEET...BECOMING FROM THE NORTHWEST AND STRONGER ABOVE 30K FEET. && .MARINE...TRADES WILL STRENGTHEN THROUGH SATURDAY UP TO 20 KT THEN WEAKEN THROUGH MID NEXT WEEK. EAST SWELLS ASSOCIATED WITH TS EDOUARD ARE EXPECTED TO ARRIVE TUE AND WILL RAISE SEAS TO 5-6 FT. && .PRELIMINARY POINT TEMPS/POPS... SJU 79 89 79 90 / 20 20 30 30 STT 79 89 80 90 / 20 20 30 30 && .SJU WATCHES/WARNINGS/ADVISORIES... PR...NONE. VI...NONE. COASTAL WATERS...NONE. && 71/72
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN JUAN PR 601 AM AST FRI SEP 12 2014 AMZ710>745-PRZ001>013-131015- 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- 601 AM AST FRI SEP 12 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO AND THE ADJACENT ATLANTIC COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. AMZ715-725-VIZ001-002-131015- ST. THOMAS ST. JOHN ADJACENT ISLANDS-ST CROIX- NEARSHORE ATLANTIC AND ADJACENT CARIBBEAN COASTAL WATERS- 601 AM AST FRI SEP 12 2014 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...SATURDAY THROUGH THURSDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN JUAN PR 247 PM AST FRI SEP 12 2014 PRC003-011-117-121945- ANASCO PR-RINCON PR-AGUADA PR- 247 PM AST FRI SEP 12 2014 AT 244 PM AST...NATIONAL WEATHER SERVICE METEOROLOGIST DETECTED A STRONG THUNDERSTORM 2 MILES WEST OF LUYANDO...OR ABOUT OVER AGUADA... MOVING NORTHWEST AT 10 MPH. THIS STRONG THUNDERSTORM WILL CONTINUE TO PRODUCE VERY HEAVY RAIN AND FREQUENT LIGHTNING...AND MAY CONTAIN STRONG GUSTY WINDS AND SMALL HAIL. INTENSE LIGHTNING IS REPORTED WITH THIS STORM. IF OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES. FC
The San Juan radar (TJUA), 112 km away, was scanning. The volume nearest the first event began at 18:56 UTC.
1 thunderstorm wind, 1 hail. Local standard time, as filed.
Several trees and tree branches downed along road PR-2 between Aguada and Aguadilla municipalities.
Hail was reported in Barrio Angeles El Corcho sector.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Puerto Rico in 2014Every state in 2014This day in weather historyWarnings in Puerto Rico, September 2014
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: 541037, 541043.