Puerto Rico, 2006

Flash Flood in Puerto Rico, April 1, 2006

April 1, 2006 · NWS SJU · 1 event in 1 county or zone

Frontal trough that extended from just south of Dominican Republic northeast across the Mona Passage and then continued northeast into the central Atlantic was responsible for the moderate to heavy rains that affected parts of Puerto Rico from mid afternoon Friday March 31 through the early morning of Saturday April 1.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
$3.0 million
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 happened

The episode as NWS SJU wrote it up.

Frontal trough that extended from just south of Dominican Republic northeast across the Mona Passage and then continued northeast into the central Atlantic was responsible for the moderate to heavy rains that affected parts of Puerto Rico from mid afternoon Friday March 31 through the early morning of Saturday April 1.

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 31, 11:54 PM AST, 1 hour 6 minutes earlier.

Area forecast discussion, Mar 31, 11:54 PM AST, 1 hour 6 minutes before
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Hazardous weather outlook, Mar 31, 6:30 AM AST, 18 hours 30 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN JUAN PR
630 AM AST FRI MAR 31 2006

PRZ001>013-AMZ710>750-011000-
630 AM AST FRI MAR 31 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO.

.TODAY AND TONIGHT...AN OLD FRONTAL BOUNDARY IN THE VICINITY OF
PUERTO RICO WILL CONTINUE TO ENHANCE LOCAL SHOWER AND THUNDERSTORM
ACTIVITY THROUGH TONIGHT. SOME OF THE SHOWERS MAY PRODUCE LOCALLY
HEAVY RAINFALL THAT COULD LEAD TO URBAN AND SMALL STREAM FLOODING.

LONG PERIOD NORTHERLY SWELLS WILL CONTINUE TO AFFECT THE LOCAL
ATLANTIC COASTAL WATERS AND PASSAGES INTO THE CARIBBEAN. SMALL CRAFT
ADVISORIES REMAIN IN EFFECT FOR THE ATLANTIC WATERS. A HIGH SURF
ADVISORY IS ALSO IN EFFECT FOR THE NORTH COAST OF PUERTO RICO UNTIL
11 AM THIS MORNING.

.DAYS TWO THROUGH SEVEN...THE FRONTAL BOUNDARY WILL MEANDER ACROSS
THE LOCAL AREA THROUGH THE WEEKEND PRODUCING PERIODS OF SHOWERS AND
THUNDERSTORMS. ISOLATED THUNDERSTORMS AND LOCALLY HEAVY RAIN CAN
BE EXPECTED ACROSS THE FORECAST AREA...WHICH MAY LEAD TO URBAN AND
SMALL STREAM FLOODING.

.SPOTTER CALL TO ACTION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED.

VIZ001-002-AMZ710>730-011000-
630 AM AST FRI MAR 31 2006

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

.TODAY AND TONIGHT...A FRONTAL BOUNDARY IN THE VICINITY OF THE U.S.
VIRGIN ISLANDS WILL CONTINUE TO ENHANCE LOCAL SHOWER AND
THUNDERSTORM ACTIVITY THROUGH TONIGHT.

LONG PERIOD NORTHERLY SWELLS WILL CONTINUE TO AFFECT THE LOCAL
ATLANTIC COASTAL WATERS AND PASSAGES INTO THE CARIBBEAN. SMALL CRAFT
ADVISORIES REMAIN IN EFFECT FOR THE ATLANTIC WATERS. A HIGH SURF
ADVISORY IS ALSO IN EFFECT FOR THE NORTH COASTS OF THE NORTHERN U.S.
VIRGIN ISLANDS UNTIL 11 AM THIS MORNING.

.DAYS TWO THROUGH SEVEN...THE FRONTAL BOUNDARY WILL MEANDER ACROSS
THE LOCAL AREA THROUGH THE WEEKEND PRODUCING PERIODS OF SHOWERS AND
THUNDERSTORMS. ISOLATED THUNDERSTORMS AND LOCALLY HEAVY RAIN CAN
BE EXPECTED ACROSS THE FORECAST AREA...WHICH MAY LEAD TO URBAN AND
GUT FLOODING.

.SPOTTER CALL TO ACTION STATEMENT...

SPOTTER ACTIVATION IS MAY BE REQUIRED.

STAY TUNED TO NOAA WEATHER RADIO AND OTHER LOCAL MEDIA FOR FURTHER
DETAILS OR UPDATES.

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.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

1 flash flood. Local standard time, as filed.

Flash Flood, Northwest

When
April 1, 1:00 AM AST to 3:30 AM AST
Where
Northwest County, Aguadilla
Property damage
$3.0 million
Reported by
NEWSPAPER
Coordinates
18.467, -67.117

Flash flooding forced several families to evacuate their homes in Barrio Borinquen and Camaseyes of Aguadilla. At least 10 families lost all their personal belongings and other 90 suffered partial losses. Roads 459, 467, and 468 reported damage as well as Marina Street and Parterre.

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

More

Every storm in Puerto Rico in 2006Every state in 2006This day in weather historyWarnings in Puerto Rico, April 2006

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: 5503539.