Flash Flood in Puerto Rico, March 28, 2004

Name: Flash Flood in Puerto Rico, March 28, 2004
Start: 2004-03-28T19:43
End: 2004-03-28T22:43
Location: Puerto Rico

March 28, 2004 · NWS SJU · 1 event in 1 county or zone

1 flash flood, as filed by the National Weather Service.

The toll

Deaths: 0
Injuries: 0
Property damage: $7,000
Crop damage: None recorded
Events: 1

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.

What forecasters said that day

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 Mar 28, 4:51 PM AST, 2 hours 52 minutes earlier.

Area forecast discussion, Mar 28, 4:51 PM AST, 2 hours 52 minutes before

PUERTO RICO AND U.S. VIRGIN ISLANDS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
451 PM AST SUN MAR 28 2004

.DISCUSSION...AN UNSETTLED WEATHER PATTERN SHOULD CONTINUE LOCALLY
FOR AT LEAST THE NEXT FEW DAYS...AS MOIST...LOW LEVEL NORTHEAST FLOW
CONTINUES THROUGH MONDAY NIGHT...FOLLOWED BY A SERIES OF LOW LEVEL
DISTURBANCES THAT WILL AFFECT THE LOCAL ISLANDS LATE MONDAY NIGHT
INTO AT LEAST WEDNESDAY. AT THE SAME TIME...MID TO UPPER LEVEL
TROUGH WILL REMAIN LOCATED NORTHWEST OF THE LOCAL AREA...WITH
WESTERLIES CONTINUING ACROSS LOCAL ISLANDS AND A SERIES OR SHORT
WAVES EXPECTED TO AT LEAST CLIP THE FA. WE WILL NEED TO WATCH JUST
HOW FAR SOUTH AND EAST...DEEP UPSTREAM 500 MB LOW/TROUGH CURRENTLY
OFF THE U.S. MID ATLANTIC COAST...ACTUALLY MAKES IT BEFORE BEING
KICKED OUT TO THE EAST. ALL IN ALL...EXPECT VARYING AMOUNTS OF
CLOUDINESS WITH SCATTERED TO NUMEROUS SHOWERS AND EVEN A COUPLE OF
THUNDERSTORMS ACROSS LOCAL ISLANDS FOR THE NEXT COUPLE OF DAYS AND
PROBABLY BEYOND.

&&

.MARINE...NORTH NORTHEAST SWELLS WILL CONTINUE TO SUBSIDE THROUGH
MONDAY. HAVE LEFT SMALL CRAFT ADVISORY AND HIGH SURF ADVISORY IN
EFFECT THROUGH AT LEAST THIS EVENING...FOR THE SAME AREAS AS THEY
WERE BEFORE.

&&

.HYDROLOGY...BANDS OF SHOWERS AND ISOLATED THUNDERSTORMS CONTINUE TO
AFFECT THE NORTHERN TWO-THIRDS OF PUERTO RICO AND CONTINUE TO SLOWLY
SATURATE LOCAL SOILS AND CAUSE RIVER LEVELS TO RISE. STILL EXPECT AT
LOCALIZED URBAN AND RIVER FLOODING TO CONTINUE TO BECOME A PROBLEM
OVER THE NEXT COUPLE OF DAYS...AND THIS WILL NEED TO BE MONITORED
CLOSELY.

&&

.PRELIMINARY POINT TEMPS/POPS...
SJU  72  84  73  84 /  60  40  50  40
STT  72  83  73  83 /  60  40  40  40

&&

.SJU WATCHES/WARNINGS/ADVISORIES...
PR...SCA AMZ710-720 AND PARTS OF AMZ730-740. HSA N COASTS OF
     PRZ001-002-005-008-012.
VI...SCA AMZ710-720 AND PARTS OF AMZ730. HSA N COASTS OF
     VIZ001-002.

&&

SEELEY

Hazardous weather outlook, Mar 28, 6:30 AM AST, 13 hours 13 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN JUAN PR
630 AM AST SUN MAR 28 2004

PRZ001>013-AMZ710>750-291000-
630 AM AST SUN MAR 28 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO.

.TODAY AND TONIGHT...SCATTERED TO NUMEROUS SHOWERS...OF MODERATE
INTENSITY...ARE EXPECTED ACROSS PUERTO RICO...MAINLY DURING THE
EARLY MORNING AND LATE AFTERNOON HOURS. THERE IS STILL A RISK OF OF
AN ISOLATED THUNDERSTORM OR TWO DURING THE AFTERNOON. SOME AREAS MAY
RECEIVE MODERATE TO HEAVY AMOUNTS OF RAIN...BETWEEN ONE AND TWO
INCHES. THIS COULD THEREFORE LEAD TO MINOR FLOODING OF
STREETS...SMALL STREAMS AND POOR DRAINAGE AREAS. A SMALL CRAFT
ADVISORY...AND HIGH SURF ADVISORY ARE IN EFFECT FOR THE LOCAL
ATLANTIC WATERS AND COASTS DUE TO LARGE NORTH NORTHEAST SWELLS.
SWELLS OF 8 TO 10 FEET ARE LIKELY TODAY BUT WILL CONTINUE TO SLOWLY
SUBSIDE TONIGHT. PLEASE REFER TO LATEST MARINE STATEMENTS ISSUED BY
THE NATIONAL WEATHER SERVICE SAN JUAN FOR UPDATES.

.SPOTTER CALL TO ACTION STATEMENT...
MARINE SPOTTER ACTIVATION IS REQUESTED TODAY.

.MONDAY THROUGH SATURDAY...WET AND MARGINALLY UNSTABLE WEATHER
CONDITIONS WILL CONTINUE ACROSS MOST OF THE LOCAL ISLANDS AT LEAST
THROUGH MONDAY...WITH CONDITIONS GRADUALLY IMPROVING THEREAFTER.
THEREFORE...OCCASIONAL CLOUDINESS AND SHOWER ACTIVITY...AND THE
POTENTIAL FOR ISOLATED AREAS OF MODERATE TO HEAVY RAINFALL CAN BE
EXPECTED THROUGH MONDAY. THIS ACTIVITY WILL BE MAINLY DURING THE
EARLY MORNING HOURS AND LATE AFTERNOON. LARGE AND LONG PERIOD SWELLS
FROM THE NORTHEAST WILL AFFECT OUR ATLANTIC COASTAL WATERS THROUGH
WEDNESDAY. THIS WILL PRODUCE VERY DANGEROUS SEA/SURF CONDITIONS.

VIZ001-002-AMZ710>730-291000-
630 AM AST SUN MAR 28 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE U.S. VIRGIN ISLANDS.

.TODAY AND TONIGHT...SCATTERED TO NUMEROUS SHOWERS...OF MODERATE
INTENSITY...ARE EXPECTED ACROSS PORTIONS OF THE ISLANDS TODAY...
MAINLY DURING THE EARLY MORNING AND AFTERNOON HOURS. SOME AREAS MAY
RECEIVE MODERATE TO HEAVY AMOUNTS OF RAIN AT TIMES WHICH MAY CAUSE
MINOR FLOODING OF STREETS...GUTS AND POOR DRAINAGE AREAS.
A SMALL CRAFT ADVISORY...AND HIGH SURF ADVISORY ARE IN EFFECT FOR
THE LOCAL ATLANTIC WATERS AND COASTS DUE TO LARGE NORTH NORTHEAST
SWELLS. SWELLS OF 8 TO 10 FEET ARE LIKELY TODAY BUT WILL CONTINUE TO
SLOWLY SUBSIDE TONIGHT.

.SPOTTER CALL TO ACTION STATEMENT...
MARINE SPOTTER ACTIVATION IS REQUESTED TODAY.

.MONDAY THROUGH SATURDAY...WET AND MARGINALLY UNSTABLE WEATHER
CONDITIONS WILL CONTINUE ACROSS MOST OF THE LOCAL ISLANDS AT LEAST
THROUGH MONDAY...WITH CONDITIONS GRADUALLY IMPROVING THEREAFTER.
THEREFORE...OCCASIONAL CLOUDINESS AND SHOWER ACTIVITY...AND THE
POTENTIAL FOR ISOLATED AREAS OF MODERATE TO HEAVY RAINFALL CAN BE
EXPECTED THROUGH MONDAY. THIS ACTIVITY WILL BE MAINLY DURING THE
EARLY MORNING HOURS AND LATE AFTERNOON. LARGE AND LONG PERIOD SWELLS
FROM THE NORTHEAST WILL AFFECT OUR ATLANTIC COASTAL WATERS THROUGH
WEDNESDAY. THIS WILL PRODUCE VERY DANGEROUS SEA/SURF CONDITIONS.

FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE WEB
SITE FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS AT (ALL LOWERCASE
LETTERS): HTTP://WWW.SRH.NOAA.GOV/SJU.

In the hours before

Local storm report, Mar 28, 4:19 PM AST, 3 hours 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
419 PM AST SUN MAR 28 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

0417 PM     FLOOD            CAGUAS                  18.23N 66.04W
03/28/2004                   CAGUAS             PR   EMERGENCY MNGR

            URBAN FLOODING WAS REPORTED AT BARRIO CANABONCITO IN
            CAGUAS

&&

RM

Local storm report, Mar 28, 4:24 PM AST, 3 hours 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
424 PM AST SUN MAR 28 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

0417 PM     FLOOD            AGUAS BUENAS            18.26N 66.11W
03/28/2004                   AGUAS BUENAS       PR   AIRPLANE PILOT

            A SMALL STREAM WAS REPORTED OUT OF ITS BANKS ALONG ROAD
            794 FROM THE MUNICIPALITY OF AGUAS BUENAS TO BAYAMON,
            NEAR BARRIO BAYAMONCITO.

0417 PM     FLOOD            AGUAS BUENAS            18.26N 66.11W
03/28/2004                   AGUAS BUENAS       PR   EMERGENCY MNGR

            A SMALL STREAM WAS REPORTED OUT OF ITS BANKS ALONG ROAD
            794 FROM THE MUNICIPALITY OF AGUAS BUENAS TO BAYAMON,
            NEAR BARRIO BAYAMONCITO.

0417 PM     FLOOD            AGUAS BUENAS            18.26N 66.11W
03/28/2004                   AGUAS BUENAS       PR   EMERGENCY MNGR

            A SMALL STREAM WAS REPORTED OUT OF ITS BANKS ALONG ROAD
            794 FROM THE MUNICIPALITY OF AGUAS BUENAS TO BAYAMON,
            NEAR BARRIO BAYAMONCITO.

&&

RM

Event by event

1 flash flood. Local standard time, as filed.

Flash Flood, Northeast

When: March 28, 7:43 PM AST to 10:43 PM AST
Where: Northeast County, Naguabo
Property damage: $7,000
Reported by: EMERGENCY MANAGER

A car was reported flooded by River Rio Blanco along road 31.

What these are

Flash Flood: Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Puerto Rico in 2004 Every state in 2004 This day in weather history Warnings in Puerto Rico, March 2004

Sources

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: 5389359.