S. Virgin Islands during the night.
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.
The leading edge of a tropical wave moved across PR and the U.S. Virgin Islands during the night. Strong thunderstorms with torrential rainfall and gusty winds were observed over the western interior and northwest PR in the afternoon.
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 18, 2:16 PM AST, 3 hours 19 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JUAN PR 216 PM AST THU SEP 18 2014 .SYNOPSIS...LEADING EDGE OF TROPICAL WAVE WILL MOVE ACROSS PUERTO RICO AND THE U.S. VIRGIN ISLANDS TONIGHT. TROPICAL WAVE WILL MOVE ACROSS THE LOCAL AREA TOMORROW AND WILL EXIT THE REGION FRIDAY NIGHT. STRONG HIGH PRESSURE WILL EXIT THE EASTERN U.S. AND WILL MOVE ACROSS THE WESTERN NORTH ATLANTIC DURING THE WEEKEND. ANOTHER TROPICAL WAVE WILL MOVE ACROSS THE REGION MONDAY. && .DISCUSSION...ISOLATED SHOWERS WITH THUNDERSTORMS DEVELOPED THIS AFTERNOON OVER COAMO AND VILLALBA. REST OF PUERTO RICO AND THE U.S. VIRGIN ISLANDS WERE UNDER PARTLY CLOUDY TO SUNNY SKIES. LEADING EDGE OF TROPICAL WAVE WILL MOVE ACROSS PUERTO RICO AND THE U.S. VIRGIN ISLANDS TONIGHT. THEREFORE...AN INCREASE IN SHOWERS AND THUNDERSTORMS IS EXPECTED FROM EAST TO WEST. BETTER CHANCES FOR SHOWERS TONIGHT WILL BE OVER THE U.S. VIRGIN ISLANDS AND EASTERN PUERTO RICO. FOR TOMORROW...THE TROPICAL WAVE WILL MOVE ACROSS THE LOCAL ISLANDS. THE COMBINATION OF THE TROPICAL WAVE...WITH DAYTIME HEATING AND LOCAL EFFECTS PROMISE TO BRING A GOOD DEAL OF SHOWER AND THUNDERSTORM ACTIVITY ACROSS THE REGION...MAINLY IN THE AFTERNOON HOURS. PRECIPITABLE WATER VALUES ARE EXPECTED TO BE ABOVE 2.0 INCHES MOST OF THE DAY TOMORROW...WITH MOISTURE LINGERING THROUGH FRIDAY NIGHT. WEATHER CONDITIONS WILL IMPROVE QUICKLY...AS A DRIER AIR MASS MOVES ACROSS THE REGION BEHIND THE WAVE. SUNDAY LOOKS THE DRIEST DAY...WITH ANOTHER TROPICAL WAVE EXPECTED TO AFFECT THE REGION BY MONDAY AND TUESDAY NEXT WEEK. AS STRONG HIGH PRESSURE BUILDS NORTH OF THE AREA DURING THE WEEKEND...PRESSURE GRADIENT WILL TIGHTEN...WHICH WILL ALLOW TO AN INCREASE IN WINDS ACROSS THE AREA. && .AVIATION...VFR CONDS EXPECTED TO CONTINUE WITH VCSH/VCTS FOR ALMOST ALL TAF SITES THIS AFTERNOON AND TONIGHT AS TROPICAL WAVE APPROACHES FROM THE EAST. AS THE NIGHT PROGRESSES...MVFR CONDS ARE POSSIBLE FOR ISLANDS TAF SITES...TJSJ AND TJPS. WIND BLO FL150 FROM E TO SE 6-14 KTS BECOMING NW ABV FL300 AT GREATER THAN 25 KTS. && .MARINE...SEAS UP TO 4 FEET AND WINDS UP TO 16 KNOTS ARE EXPECTED ACROSS THE COASTAL WATERS. && .PRELIMINARY POINT TEMPS/POPS... SJU 78 88 79 88 / 60 60 10 20 STT 78 89 80 90 / 60 60 10 20 && .SJU WATCHES/WARNINGS/ADVISORIES... PR...NONE. VI...NONE. COASTAL WATERS...NONE. && 02/71
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN JUAN PR 539 AM AST THU SEP 18 2014 AMZ710>745-PRZ001>013-190945- 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- 539 AM AST THU SEP 18 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO AND THE ADJACENT ATLANTIC COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT SHOWERS AND THUNDERSTORMS MAY CAUSE A FEW AREAS OF URBAN AND SMALL STREAM FLOODING THIS AFTERNOON FOR THE INTERIOR AND WESTERN PART OF PUERTO RICO. FREQUENT DANGEROUS LIGHTNING MAY ALSO OCCUR. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY URBAN AND SMALL STREAM FLOODING IS POSSIBLE DURING AFTERNOON SHOWERS AND THUNDERSTORMS ALONG WITH DANGEROUS LIGHTNING IN STORMS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. AMZ715-725-VIZ001-002-190945- ST. THOMAS ST. JOHN ADJACENT ISLANDS-ST CROIX- NEARSHORE ATLANTIC AND ADJACENT CARIBBEAN COASTAL WATERS- 539 AM AST THU SEP 18 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...FRIDAY THROUGH WEDNESDAY 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 515 PM AST THU SEP 18 2014 PRC027-065-071-115-182200- HATILLO PR-ISABELA PR-CAMUY PR-QUEBRADILLAS PR- 515 PM AST THU SEP 18 2014 AT 510 PM AST...NATIONAL WEATHER SERVICE METEOROLOGIST DETECTED A STRONG THUNDERSTORM OVER QUEBRADILLAS...CAMUY AND HATILLO...NEAR STATIONARY. THIS STRONG THUNDERSTORM IS PRODUCING TORRENTIAL RAINFALL...FREQUENT LIGHTNING AND MAY PRODUCE GUSTY WINDS OF 25 TO 35 MPH. HEAVY RAINS MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS AS THEY MAY BE WASHED OUT. INTENSE LIGHTNING IS REPORTED WITH THIS STORM. IF OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF POSSIBLE. ER
COMUNICADO ESPECIAL SOBRE LAS CONDICIONES DEL TIEMPO SERVICIO NACIONAL DE METEOROLOGIA SAN JUAN PR 515 PM AST JUEVES 18 DE SEPTIEMBRE DE 2014 PRC027-065-071-115-182200- HATILLO PR-ISABELA PR-CAMUY PR-QUEBRADILLAS PR- 515 PM AST JUEVES 18 DE SEPTIEMBRE DE 2014 A LAS 5:10 PM AST...METEOROLOGOS DEL SERVICIO NACIONAL DE METEOROLOGIA DETECTARON UNA FUERTE TRONADA SOBRE QUEBRADILLAS...CAMUY Y HATILLO...CASI ESTACIONARIA. ESTA FUERTE TRONADA ESTA PRODUCIENDO LLUVIAS TORRENCIALES...RELAMPAGOS FRECUENTES...Y PODRIA PRODUCIR VIENTOS EN RAFAGAS DE 25 A 35 MPH. FUERTES LLUVIAS PUDIERAN INUNDAR AREAS BAJAS TALES COMO ZANJAS Y AREAS BAJO PUENTES. EVITE ESTAS AREAS Y NO CRUZE CARRETERAS INUNDADAS YA QUE ESTAS PUDIERAN ESTAR SOCAVADAS. RELAMPAGOS FUERTES SE HAN REPORTADO CON ESTAS TORMENTAS. SI ESTA AFUERA...MANTENGASE ALEJADO DE OBJETOS ALTOS COMO LOS ARBOLES. MUEVASE AL INTERIOR DE SER POSIBLE. ER/ACOTTO
The San Juan radar (TJUA), 99 km away, was scanning. The volume nearest the first event began at 21:32 UTC.
3 thunderstorm wind. Local standard time, as filed.
Tree and power lines downed along road PR-113 at Km 12.6 La Romana sector and at Km 4.2 Barrio San Antonio.
Tree downed over a power line on road PR-119, Km 12.1 in Quebradillas.
Trees and power lines downed in different sectors along the border between San Sebastian, Quebradillas and Isabela municipalities. Power outages reported in Sonador, Los Robles, Salto, and Cibao sectors.
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: 541054, 543609, 543610.