The combination of an upper level low with an induced surface trough produced scattered to numerous showers mainly across the eastern half 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.
The combination of an upper level low with an induced surface trough produced scattered to numerous showers mainly across the eastern half 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 Dec 24, 5:53 AM AST, 2 hours 17 minutes earlier.
AREA FORECAST DISCUSSION...CORRECTED
NATIONAL WEATHER SERVICE SAN JUAN PR
553 AM AST TUE DEC 24 2013
.SYNOPSIS...UPPER LEVEL TROUGH WILL LINGER ACROSS THE AREA THROUGH
THURSDAY. SURFACE TROUGH WILL MOVE ACROSS THE AREA LATE TONIGHT
INTO WEDNESDAY. ACTIVE WEATHER WITH SCATTERED TO NUMEROUS
SHOWERS WITH ISOLATED STRONG THUNDERSTORMS WILL CONTINUE TO
AFFECT THE LOCAL ISLANDS THROUGH THURSDAY.
&&
.DISCUSSION...DEEP UPPER LEVEL TROUGH IS THE MAIN WEATHER FEATURE
AFFECTING THE LOCAL WEATHER CONDITIONS. LATEST SATELITE AND RADAR
IMAGES ARE SHOWING AN EXTENSIVE AREA OF SHOWERS AND THUNDERSTORMS
OVER PUERTO RICO...WHICH EXTEND SEVERAL HUNDREDS MILES TO THE NORTH
AND NORTHEAST OF THE AREA. THIS AREA OF ACTIVE WEATHER IS FORECAST
TO LINGER ACROSS THE AREA THROUGH AT LEAST THURSDAY...AS THE UPPER
LEVEL TROUGH MEANDER NEAR THE REGION. THIS UPPER LEVEL TROUGH WILL
INTERACT WITH A SURFACE TROUGH WHICH WILL MOVE ACROSS THE LOCAL
AREA TONIGHT INTO WEDNESDAY. BOTH FEATURES PROMISE TO MAINTAIN
ACTIVE WEATHER ACROSS THE REGION THROUGH AT LEAST THURSDAY. IN
ADDITION...SURFACE WINDS ARE EXPECTED TO SHIFT SOUTHEASTERLY AND
EVEN SOUTHERLY THROUGH THE END OF THE WEEK. THIS WIND FLOW WILL
TRANSPORT DEEP TROPICAL MOISTURE ACROSS THE AREA...AND WILL
ENHANCE THE SHOWER AND THUNDERSTORM ACTIVITY MAINLY IN THE
AFTERNOON HOURS.
ISOLATED STRONG THUNDERSTORMS CAN BE EXPECTED ONCE AGAIN TODAY AND
WEDNESDAY AS COLD AIR AT MID LEVEL OF THE ATMOSPHERE CONTINUE TO
PROMOTE UNSTABLE ENVIRONMENT. THEREFORE...SOME OF THESE STORMS
COULD PRODUCE TORRENTIAL RAINFALL...FREQUENT LIGHTING AND STRONG
GUSTY WINDS. SMALL HAIL IS ALSO POSSIBLE DUE TO LOWER THAN NORMAL
TEMPERATURES AT MID LEVELS TODAY AND WEDNESDAY. WEATHER CONDITIONS
ARE EXPECTED TO IMPROVE BY THE WEEKEND AS UPPER LEVEL RIDGE BUILDS
ACROSS THE REGION.
&&
.AVIATION...PERIODS OF MVFR CONDITIONS AND MOUNTAIN OBSCURATIONS WILL
REMAIN POSSIBLE AT ALL TAF SITES DURING THE FORECAST PERIOD AS UPPER
LEVEL LOW CONTINUES TO ENHANCE SHOWER AND THUNDERSTORM ACTIVITY
ACROSS THE FLYING AREA. EASTERLY WINDS EXPECTED THROUGH AT LEAST
TOMORROW MORNING BECOMING SOUTHERLY THIS AFTERNOON.
&&
.MARINE...DUE TO LATEST BUOY OBSERVATIONS AS WELL AS CURRENT
MODEL GUIDANCE...THE SMALL CRAFT ADVISORY WAS EXTENDED THROUGH
MIDNIGHT TONIGHT AS HAZARDOUS MARINE CONDITIONS WILL CONTINUE.
SEAS UP TO 9 FEET AND WINDS UP TO 21 KNOTS ARE EXPECTED. PLEASE REFER
TO THE LATEST COASTAL WATERS FORECAST AND MARINE WEATHER MESSAGE
ISSUED BY THE NATIONAL WEATHER SERVICE WFO SAN JUAN OFFICE.
&&
.PRELIMINARY POINT TEMPS/POPS...
SJU 84 74 81 73 / 70 30 60 20
STT 83 73 84 75 / 70 40 60 20
&&
.SJU WATCHES/WARNINGS/ADVISORIES...
PR...NONE.
VI...NONE.
COASTAL WATERS...SMALL CRAFT ADVISORY UNTIL MIDNIGHT AST TONIGHT FOR ANEGADA
PASSAGE SOUTHWARD TO 17N-ATLC WATERS OF PUERTO RICO AND
USVI FROM 10NM TO 19.5N-CARIBBEAN WATERS OF PUERTO RICO
FROM 10 NM TO 17N-COASTAL WATERS OF NORTHERN PUERTO RICO
OUT 10 NM-COASTAL WATERS OF NORTHERN USVI AND CULEBRA OUT
10 NM-COASTAL WATERS OF SOUTHERN USVI VIEQUES AND EASTERN
PUERTO RICO OUT 10 NM-MONA PASSAGE SOUTHWARD TO 17N.
&&
11/71HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN JUAN PR 608 AM AST TUE DEC 24 2013 AMZ710>745-PRZ001>013-251015- 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- 608 AM AST TUE DEC 24 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO AND THE ADJACENT ATLANTIC COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT UPPER LEVEL LOW ALOFT WILL CONTINUE TO PROMOTE AN UNSTABLE ENVIRONMENT ACROSS THE LOCAL ISLAND THROUGH AT LEAST MIDWEEK. AS A RESULT...THE RISK OF SHOWERS AND THUNDERSTORMS REMAIN HIGH OVER THE NEXT 24 HOURS. STRONG THUNDERSTORMS CAPABLE OF PRODUCING VERY HEAVY RAINFALL... FREQUENT LIGHTNING AND STRONG GUSTY AS WELL AS SMALL HAIL ARE ALSO POSSIBLE ACROSS THE FORECAST AREA TODAY. HEAVY RAINS COULD ALSO LEAD TO URBAN AND SMALL STREAM FLOODING ACROSS PORTIONS OF THE LOCAL ISLANDS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY UNSETTLED PATTERN WILL PREVAIL THROUGH AT LEAST WEDNESDAY...KEEPING THE RISK OF SHOWERS AND THUNDERSTORMS FAIRLY HIGH. AS A RESULT...URBAN AND SMALL STREAM FLOODING IS POSSIBLE ACROSS PORTIONS OF THE LOCAL ISLANDS. .SPOTTER INFORMATION STATEMENT... REPORTS OF FLOODING OR ANY OTHER SIGNIFICANT WEATHER RELATED EVENT WOULD BE APPRECIATED. AMZ715-725-VIZ001-002-251015- ST. THOMAS ST. JOHN ADJACENT ISLANDS-ST CROIX- NEARSHORE ATLANTIC AND ADJACENT CARIBBEAN COASTAL WATERS- 608 AM AST TUE DEC 24 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE U.S. VIRGIN ISLANDS AND THE ADJACENT COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT UPPER LEVEL LOW ALOFT WILL CONTINUE TO PROMOTE AN UNSTABLE ENVIRONMENT ACROSS THE LOCAL ISLAND THROUGH AT LEAST MIDWEEK. AS A RESULT...THE RISK OF SHOWERS AND THUNDERSTORMS REMAIN HIGH OVER THE NEXT 24 HOURS. STRONG THUNDERSTORMS CAPABLE OF PRODUCING VERY HEAVY RAINFALL... FREQUENT LIGHTNING AND STRONG GUSTY ARE ALSO POSSIBLE ACROSS THE FORECAST AREA TODAY. HEAVY RAINS COULD ALSO LEAD TO URBAN AND GUT FLOODING ACROSS PORTIONS OF THE LOCAL ISLANDS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY UNSETTLED PATTERN WILL PREVAIL THROUGH AT LEAST WEDNESDAY...KEEPING THE RISK OF SHOWERS AND THUNDERSTORMS FAIRLY HIGH. AS A RESULT...URBAN AND GUT FLOODING IS POSSIBLE ACROSS PORTIONS OF THE LOCAL ISLANDS. .SPOTTER INFORMATION STATEMENT... REPORTS OF FLOODING OR ANY OTHER SIGNIFICANT WEATHER RELATED EVENT WOULD BE APPRECIATED.
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
Portions of Rd #3 and Highway 53 were closed due to Rio Fajardo out of its banks.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Puerto Rico in 2013Every state in 2013This day in weather historyWarnings in Puerto Rico, December 2013
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: 488059.