Puerto Rico, 2010

Heavy Rain in Puerto Rico, September 30, 2010

September 30, 2010 · NWS SJU · 1 event in 1 county or zone

Scattered showers and isolated thunderstorms developed during the early afternoon between the municipalities of Aibonito and Barranquitas. The heavy rains inland over the central interior caused a sudden water surge down the Coamo river that overtook a couple riding a four track vehicle.

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
2
Property damage
None recorded
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.

Scattered showers and isolated thunderstorms developed during the early afternoon between the municipalities of Aibonito and Barranquitas. The heavy rains inland over the central interior caused a sudden water surge down the Coamo river that overtook a couple riding a four track vehicle. One of them managed to escape and reached the river bank, the other grabbed some bamboo trees, and was later rescued.

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 Sep 30, 10:38 AM AST, 3 hours 7 minutes earlier.

Area forecast discussion, Sep 30, 10:38 AM AST, 3 hours 7 minutes before
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Hazardous weather outlook, Sep 30, 6:42 AM AST, 7 hours 3 minutes before
HAZARDOUS WEATHER OUTLOOK FOR PUERTO RICO AND THE U.S. VIRGIN
ISLANDS
NATIONAL WEATHER SERVICE SAN JUAN PR
642 AM AST THU SEP 30 2010

AMZ710>745-PRZ001>013-011000-
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-
642 AM AST THU SEP 30 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO AND THE
ADJACENT COASTAL WATERS.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

A PAIR OF TROPICAL WAVES ACROSS THE CENTRAL ATLANTIC HAVE A LOW
CHANCE OF DEVELOPING INTO A TROPICAL CYCLONE OVER THE NEXT COUPLE
OF DAYS. REGARDLESS OF WHETHER THEY DEVELOP INTO TROPICAL CYCLONES
OR NOT...THESE TWO WEATHER SYSTEMS HAVE THE POTENTIAL TO PRODUCE
WIDESPREAD HEAVY RAINS ACROSS THE AREA EARLY NEXT WEEK THAT COULD
LAST FOR SEVERAL DAYS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

AMZ715-725-VIZ001-002-011000-
ST. THOMAS ST. JOHN ADJACENT ISLANDS-ST CROIX-
NEARSHORE ATLANTIC AND ADJACENT CARIBBEAN COASTAL WATERS-
642 AM AST THU SEP 30 2010

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.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

A PAIR OF TROPICAL WAVES ACROSS THE CENTRAL ATLANTIC HAVE A LOW
CHANCE OF DEVELOPING INTO A TROPICAL CYCLONE OVER THE NEXT COUPLE
OF DAYS. REGARDLESS OF WHETHER THEY DEVELOP INTO TROPICAL CYCLONES
OR NOT...THESE TWO WEATHER SYSTEMS HAVE THE POTENTIAL TO PRODUCE
WIDESPREAD HEAVY RAINS ACROSS THE AREA EARLY NEXT WEEK THAT COULD
LAST FOR SEVERAL DAYS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

The radar

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

Open the radar archive at this moment

Event by event

1 heavy rain. Local standard time, as filed.

Heavy Rain, Coamo

When
September 30, 1:45 PM AST to 4:45 PM AST
Where
Coamo County, 2.01 mi SW of Coamo
Injuries
2 direct, 0 indirect
Reported by
Newspaper
Coordinates
18.062, -66.374

Scattered showers and isolated thunderstorms inland between the municipalities of Aibonito and Barranquitas caused a rapid water rise along the Coamo River near road 153, two person riding a four track vehicle were overtaken by the surge, but were rescued later.

What these are

Heavy Rain
Rainfall totals unusual for the place and season that did not produce a flood.

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

The same day elsewhere

More

Every storm in Puerto Rico in 2010Every state in 2010This day in weather historyWarnings in Puerto Rico, September 2010

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 2026-10-01. Each event’s entry at NCEI: 255068.