Upper level trough combined with daytime heating and orographic effects to produce scattered to numerous showers with strong thunderstorms affecting mainly north central and western sections of Puerto Rico.
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.
Upper level trough combined with daytime heating and orographic effects to produce scattered to numerous showers with strong thunderstorms affecting mainly north central and western sections 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 Nov 1, 2:55 PM AST, 1 hour 5 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JUAN PR 255 PM AST SUN NOV 1 2015 .SYNOPSIS...THE UPPER LEVEL TROUGH OVER WESTERN ATLANTIC WILL CONTINUE DIGGING SOUTH THROUGH MONDAY...RESULTING IN UNSTABLE CONDITIONS OVER PR AND USVI TODAY. A WEAK TROPICAL WAVE IS FORECAST TO MOVE ACROSS THE LOCAL AREA ON TUESDAY...BRINGING ADDITIONAL SHOWERS AND THUNDERSTORMS TO THE REGION. DRIER CONDITIONS EXPECTED THE REST OF THE WEEK. && .DISCUSSION...MOSTLY CLOUDY CONDITIONS PREVAIL ACROSS THE LOCAL FORECAST AREA TODAY. AT MID MORNING A BREAK OF CLOUDS HELPED SEA BREEZE TO DEVELOP AND QUICKLY A LINE OF SHOWERS AND THUNDERSTORMS DEVELOPED FROM EL YUNQUE. THESE SHOWERS AND THUNDERSTORMS QUCKLY DISSIPATED. DURING THE EARLY AFTERNOON HOURS CLUSTERS OF SHOWERS AND THUNDERSTORMS MOVING FROM THE EAST BEGAN TO AFFECT THE NORTHERN US VIRGIN ISLANDS AND EASTERN PORTIONS OF PUERTO RICO. THE LIMITING FACTOR FOR THE DEVELOPMENT OF CONVECTIVE ACTIVITY OVER THE LAND AREAS COULD BE THE DENSE CLOUD COVER OVER THE REGION. THE STRONGEST THUNDERSTORMS REMAINED OVER THE LOCAL WATERS. AT MID AFTERNOON SHOWERS AND THUNDERSTORMS ONCE GAIN DEVELOP AND AFFECTED THE EASTERN HALF OF PUERTO RICO...MAINLY THE NORTHEAST PORTIONS OF PUERTO RICO INCLUDING THE SAN JUAN METRO AREA. ALTHOUGH A DRIER AIR MASS IS FORECASTED TO MOVE OVER THE LOCAL FORECAST AREA...THE LOCAL REGION WILL CONTINUE TO BE DOMINATED BY AN UPPER LEVEL LOW...CURRENTLY OVER THE MONA PASSAGE. THIS UPPER LEVEL LOW WILL COMBINED WITH DAYTIME HEATING AND LOCAL EFFECT TO PRODUCE SCATTERED TO NUMEROUS SHOWERS WITH ISOLATED TO SCATTERED THUNDERSTORMS THIS AFTERNOON ACROSS THE CORDILLERA CENTRAL OF PUERTO RICO AND ACROSS THE COASTAL WATERS. A TROPICAL WAVE WILL MOVE ACROSS THE LOCAL AREA ON TUESDAY...THIS FEATURE WILL INCREASE AVAILABLE MOISTURE THROUGH AT LEAST WEDNESDAY MORNING. && .AVIATION... FM01/18Z-01/22Z...PRDS OF MVFR/PSBL IFR CONDS IN SHRA/TSRA AT ALL TAF SITES...ESPECIALLY TJSJ AND TIST BTWN 01/18Z- 21Z. MTN OBSCR LIKELY OVER THE INTERIOR AND CENTRAL PORTIONS OF PR. EAST WINDS AROUND 10-20 KT EXPECTED BLO FL200. NO OTHER CHG TO PREVIOUS AVN DISCUSSION. && .MARINE...SEAS UP TO 6 FEET AND WINDS UP TO 20 KNOTS ARE EXPECTED OVER THE COASTAL WATERS. SMALL CRAFT SHOULD EXERCISE CAUTION ACROSS MOST COASTAL WATERS. NUMEROUS SHOWERS AND THUNDERSTORMS WITH FREQUENT LIGHTNING AND STRONG GUSTY WINDS WILL CONTINUE TO MOVE ACROSS THE LOCAL WATERS TODYA AND TONIGHT. REFER TO MARINE WEATHER STATEMENT OR SPECIAL MARINE WARNINGS FOR LATEST CONDITIONS. && .PRELIMINARY POINT TEMPS/POPS... SJU 78 90 78 88 / 30 30 70 70 STT 78 90 79 88 / 50 50 70 70 && .SJU WATCHES/WARNINGS/ADVISORIES... PR...NONE. VI...NONE. AM...NONE. && 09/10
HAZARDOUS WEATHER OUTLOOK...CORRECTED NATIONAL WEATHER SERVICE SAN JUAN PR 433 AM AST SUN NOV 1 2015 AMZ710>745-PRZ001>013-020845- 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- 433 AM AST SUN NOV 1 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO AND THE ADJACENT ATLANTIC COASTAL WATERS. .DAY ONE...TONIGHT .THUNDERSTORMS...SCATTERED THUNDERSTORMS WITH HEAVY RAINFALL... FREQUENT LIGHTNING...SMALL HAIL AND STRONG GUSTY WINDS ARE LIKELY TODAY. .FLOODING...HEAVY RAINS COULD LEAD TO URBAN AND SMALL STREAM FLOODING MOSTLY ACROSS THE CENTRAL...INTERIOR AND WEST PORTIONS PUERTO RICO. HOWEVER...PORTIONS OF THE SAN JUAN METRO AREA MAY ALSO EXPERIENCE PERIODS OF LOCALLY HEAVY RAINS LATER TODAY...WHICH MAY LEAD TO MINOR URBAN FLOODING. RESIDENTS AND VISITORS TO THE LOCAL RIVERS AND SMALL STREAM ACROSS PUERTO RICO SHOULD ALSO REMAIN ALERT TODAY TO ANY QUICK WATER RISES IN RIVERS AND STREAMS.MUDSLIDES WILL ALSO BE POSSIBLE IN AREAS OF STEEP TERRAIN WHERE THE SOIL REMAIN SATURATED. .RIP CURRENTS...THERE IS A MODERATE RISK OF RIP CURRENTS FOR THE NORTH AND NORTHEAST FACING BEACHES OF PUERTO RICO TODAY. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY ANOTHER SURGE OF MOISTURE AND INSTABILITY IS EXPECTED ON TUESDAY WHEN A TROPICAL WAVE IS FORECAST TO CROSS THE LOCAL REGION. URBAN AND SMALL STREAM FLOODING ALSO POSSIBLE DURING THIS EVENT. .SPOTTER INFORMATION STATEMENT... WIDESPREAD SPOTTER ACTIVATION IS NOT ANTICIPATED, HOWEVER INDIVIDUAL SPOTTER ARE ENCOURAGED TO REPORT STRONG WINDS...HAIL...FLOODING... WATERSPOUT...RIP CURRENTS TO THE NATIONAL WEATHER SERVICE IN SAN JUAN. AMZ715-725-VIZ001-002-020845- ST. THOMAS ST. JOHN ADJACENT ISLANDS-ST CROIX- NEARSHORE ATLANTIC AND ADJACENT CARIBBEAN COASTAL WATERS- 433 AM AST SUN NOV 1 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE U.S. VIRGIN ISLANDS AND THE ADJACENT COASTAL WATERS. .DAY ONE...TONIGHT .THUNDERSTORMS...SCATTERED THUNDERSTORMS WITH HEAVY RAINFALL... FREQUENT LIGHTNING AND STRONG GUSTY WINDS ARE LIKELY TODAY. .FLOODING...HEAVY RAINS COULD LEAD TO URBAN AND GUT FLOODING ACROSS PORTIONS OF THE VIRGIN ISLANDS. .RIP CURRENTS...THERE IS A MODERATE RISK OF RIP CURRENTS FOR MOST OF THE BEACHES OF SAINT CROIX EXCEPT THE WEST COAST BEACHES. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY ANOTHER SURGE OF MOISTURE AND INSTABILITY IS EXPECTED ON TUESDAY WHEN A TROPICAL WAVE IS FORECAST TO CROSS THE LOCAL REGION. URBAN AND GUT FLOODING ALSO POSSIBLE DURING THIS EVENT. .SPOTTER INFORMATION STATEMENT... WIDESPREAD SPOTTER ACTIVATION IS NOT ANTICIPATED, HOWEVER INDIVIDUAL SPOTTER ARE ENCOURAGED TO REPORT STRONG WINDS...HAIL...FLOODING... WATERSPOUT...RIP CURRENTS TO THE NATIONAL WEATHER SERVICE IN SAN JUAN.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
311 PM AST SUN NOV 1 2015
PRZ001-005-012030-
NORTH CENTRAL-SAN JUAN AND VICINITY-
311 PM AST SUN NOV 1 2015
...A STRONG THUNDERSTORM WILL AFFECT TOA ALTA...VEGA BAJA...
BARCELONETA...FLORIDA...MANATI...COROZAL...VEGA ALTA...ARECIBO...
MOROVIS AND CIALES MUNICIPALITIES...
AT 305 PM AST...CLUSTERS OF STRONG THUNDERSTORMS CONTINUE TO QUICKLY
DEVELOP AND MOVE ACROSS THESE AREAS. THESE STORMS WERE MOVING WEST
NORTHWEST AT AROUND 15 MPH.
WINDS IN EXCESS OF 30 MPH ARE POSSIBLE WITH THESE STORMS...AS WELL
AS TORRENTIAL RAINFALL AND POSSIBLE HAIL. THESE STORMS WILL ALSO
CAUSE LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
LOCATIONS IMPACTED INCLUDE...
ARECIBO...VEGA ALTA...MANATI...FLORIDA...BARCELONETA...VEGA BAJA...
BAJADERO...LA ALIANZA...IMBERY...MIRANDA...LA LUISA...MONSERRATE...
COTO NORTE...PAJONAL...BUFALO...SABANA...TIERRAS NUEVAS PONIENTE...
TIBURONES...TIERRAS NUEVAS PON AND ANIMAS.
LAT...LON 1848 6659 1848 6653 1847 6647 1847 6645
1849 6644 1849 6640 1848 6635 1837 6630
1836 6639 1837 6640 1837 6641 1838 6642
1835 6652 1835 6672 1847 6674 1847 6670
1849 6667 1850 6663
TIME...MOT...LOC 1908Z 240DEG 49KT 1846 6643
JFIGUEROACOMUNICADO ESPECIAL SOBRE LAS CONDICIONES DEL TIEMPO SERVICIO NACIONAL DE METEOROLOGIA SAN JUAN PR 311 PM AST DOMINGO 1 DE NOVIEMBBRE DE 20155 PRZ001-005-012030- NORTE CENTRAL-SAN JUAN Y VECINDAD- 311 PM AST DOMINGO 1 DE NOVIEMBBRE DE 20155 ...UNA TRONADA FUERTE ESTARA AFECTANDO LOS MUNICIPIOS DE TOA ALTA...VEGA BAJA...BARCELONETA...FLORIDA...MANATI...COROZAL...VEGA ALTA...ARECIBO... MOROVIS Y CIALES... A LAS 3:05 PM AST...AREAS DE TRONADAS FUERTES CONTINUAN FORMANDOSE RAPIDAMENTE Y MOVIENDOSE A TRAVES DE ESTAS AREAS. ESTAS TRONADAS SE MOVIAN HACIA EL OESTE NOROESTE A ALREDEDOR DE 15 MPH. VIENTOS EN EXCESO DE 30 MPH SON POSIBLE CON ESTAS TRONADAS...LLUVIAS TORRENCIALES...Y POSIBLE GRANIZO. TAMBIEN SON POSIBLES INUNDACIONES LOCALES. NO INTENTE CRUZAR AREAS O CARRETERAS INUNDADAS CON SUS VEHICULOS. LOCALIDADES IMPACTADAS INCLUYEN... ARECIBO...VEGA ALTA...MANATI...FLORIDA...BARCELONETA...VEGA BAJA... BAJADERO...LA ALIANZA...IMBERY...MIRANDA...LA LUISA...MONSERRATE... COTO NORTE...PAJONAL...BUFALO...SABANA...TIERRAS NUEVAS PONIENTE... TIBURONES...TIERRAS NUEVAS PON Y ANIMAS. JFR/RVT
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
336 PM AST SUN NOV 1 2015
PRZ008-012045-
NORTHWEST-
336 PM AST SUN NOV 1 2015
...A STRONG THUNDERSTORM WILL AFFECT CAMUY...ISABELA...
QUEBRADILLAS...SAN SEBASTIAN...LARES AND HATILLO MUNICIPALITIES...
AT 330 PM AST...CLUSTERS OF STRONG THUNDERSTORMS CONTINUE TO QUICKLY
DEVELOP AND MOVE ACROSS THESE AREAS. THESE STORMS WERE MOVING WEST
AT AROUND 15 MPH.
WINDS IN EXCESS OF 30 MPH ARE POSSIBLE WITH THESE STORMS...AS WELL
AS TORRENTIAL RAINFALL AND POSSIBLE HAIL. THESE STORMS WILL ALSO
CAUSE LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
LOCATIONS IMPACTED INCLUDE...
CAMUY...HATILLO...QUEBRADILLAS...QUEBRADA...CACAO AND PIEDRA GORDA.
LAT...LON 1834 6679 1836 6688 1836 6690 1839 6693
1839 6694 1838 6694 1839 6697 1849 6699
1849 6693 1848 6692 1849 6680
TIME...MOT...LOC 1935Z 180DEG 0KT 1840 6687
JFIGUEROASPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
340 PM AST SUN NOV 1 2015
PRZ006-009-012030-
CENTRAL INTERIOR-WESTERN INTERIOR-
340 PM AST SUN NOV 1 2015
...AREAS OF STRONG THUNDERSTORM AFFECTING OROCOVIS...UTUADO...CIALES
AND JAYUYA MUNICIPALITIES...
AT 336 PM AST...DOPPLER WEATHER RADAR INDICATED AREAS OF STRONG
THUNDERSTORMS AFFECTING THESE MUNICIPALITIES. THESE T-STORMS ARE
CAPABLE OF PRODUCING FREQUENT LIGHTNING AND WINDS IN EXCESS OF 30
MPH.
TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY CAUSE
LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.
LAT...LON 1827 6638 1819 6640 1818 6656 1817 6664
1822 6668 1824 6675 1830 6682 1832 6676
1831 6669 1835 6649 1824 6646
TIME...MOT...LOC 1936Z 000DEG 0KT 1821 6659
23COMUNICADO ESPECIAL SOBRE LAS CONDICIONES DEL TIEMPO SERVICIO NACIONAL DE METEOROLOGIA SAN JUAN PR 336 PM AST DOMINGO 1 DE NOVIEMBBRE DE 20155 PRZ001-005-012030- NOROESTE- 336 PM AST DOMINGO 1 DE NOVIEMBBRE DE 20155 ...UNA TRONADA FUERTE ESTARA AFECTANDO LOS MUNICIPIOS DE CAMUY...ISABELA... QUEBRADILLAS...SAN SEBASTIAN...LARES Y HATILLO... A LAS 3:30 PM AST...AREAS DE TRONADAS FUERTES CONTINUAN FORMANDOSE RAPIDAMENTE Y MOVIENDOSE A TRAVES DE ESTAS AREAS. ESTAS TRONADAS SE MOVIAN HACIA EL OESTE A ALREDEDOR DE 15 MPH. VIENTOS EN EXCESO DE 30 MPH SON POSIBLE CON ESTAS TRONADAS...LLUVIAS TORRENCIALES...Y POSIBLE GRANIZO. TAMBIEN SON POSIBLES INUNDACIONES LOCALES. NO INTENTE CRUZAR AREAS O CARRETERAS INUNDADAS CON SUS VEHICULOS. LOCALIDADES IMPACTADAS INCLUYEN... CAMUY...HATILLO...QUEBRADILLAS...QUEBRADA...CACAO Y PIEDRA GORDA. JFR/RVT
COMUNICADO ESPECIAL SOBRE LAS CONDICIONES DEL TIEMPO SERVICIO NACIONAL DE METEOROLOGIA SAN JUAN PR 340 PM AST DOMINGO 1 DE NOVIEMBBRE DE 20155 PRZ006-009-012030- INTERIOR CENTRAL-OESTE INTERIOR- 340 PM AST DOMINGO 1 DE NOVIEMBBRE DE 20155 ...UNA TRONADA FUERTE AFECTA LOS MUNICIPIOS DE OROCOVIS...UTUADO...CIALES Y JAYUYA... A LAS 3:36 PM AST...EL RADAR DOPPLER DETECTO AREAS DE TRONADAS FUERTES AFECTANDO ESTOS MUNICIPIOS. ESTAS TRONADAS SON CAPACES DE PRODCURI RAYOS FRECUENTES Y VIENTOS EN EXCESO DE 30 MPH. LLUVIAS TORRENCIALES SON POSIBLES CON ESTA TORMENTA...Y PUDIERAN CAUSAR INUNDACIONES LOCALIZADAS. NUNCA MANEJE SU VEHICULO EN AREAS DONDE EL AGUA CUBRA LA CARRETERA. OM/RVT
The San Juan radar (TJUA), 86 km away, was scanning. The volume nearest the first event began at 19:57 UTC.
2 thunderstorm wind, 1 flood. Local standard time, as filed.
PR-2 in front of SAMS club in Hatillo was reported as impassable due to flooding.
Downed tree on road PR-2 after Mayaguez Resort.
Downed tree in Barrio Tierras Nuevas in Manati.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Puerto Rico in 2015Every state in 2015This day in weather historyWarnings in Puerto Rico, November 2015
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: 608837, 608838, 608839.