Tropical Storm and Flash Flooding in Puerto Rico, August 21 to 23, 2011

Name: Tropical Storm and Flash Flooding in Puerto Rico, August 21 to 23, 2011
Start: 2011-08-21T22:29
End: 2011-08-23T23:15
Location: Puerto Rico

August 21 to 23, 2011 · NWS SJU · 48 events in 24 counties and zones

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

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The toll

Deaths: 1
Injuries: 0
Property damage: $4,000
Crop damage: None recorded
Events: 48

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.

Irene was a quite large and impressive tropical wave during most of its journey across the Atlantic Ocean during the week of August 14-20, 2011. For most of this time the wave was nearly surrounded by dry air and with enough vertical wind shear to ensure that any intensification would be slow. Its forward speed of 20 mph somewhat aided the shear in keeping it weak. Irene made landfall over mainland Puerto Rico at 125 am AST on August 22, near Punta Santiago then Luis Munoz Marin International Airport at San Juan recorded its highest wind gust of 59 mph at 218 am AST. At 300 am AST (0700 UTC) the center was estimated to be 10 miles southwest of San Juan with 70 mph sustained winds, mainly over the Atlantic waters north of the city.

By 500 am AST doppler radar had indicated winds sustained up to 72 knots (83 mph) only 500 to 600 feet above the water. Irene was then officially upgraded to a hurricane though a hurricane warning had already been issued for the region. With the hurricane center moving offshore about this time the strongest winds (north of the center) also moved away from shore. At 536 am AST the buoy near Arecibo recorded its highest wind gust of 37 knots (43 mph). At 900 am AST the center of Irene was directly north of the west coast of Puerto Rico but the hurricane force winds were well offshore with an obviously developing eye on radar.

Puerto Rico was under the effects of Tropical Cyclone Irene from early Sunday August 22 through late Wednesday August 24. Irene made landfall as a tropical storm during the early morning hours of Monday August 22, intensified overland and became a hurricane over northern Puerto Rico around 500 am Monday, before exiting into the Atlantic later that morning. Irene’s most siginificant impact was the heavy rainfall. The first rainbands entered eastern Puerto Rico early on Sunday and persisted through midnight on Wednesday, although additional rainfall was received across some of the east municipalities through Thursday morning August 25. Locations like Gurabo across eastern interior Puerto Rico experienced significant 48 hour rainfall accumulations, with an estimated return period of around 50 years.

Shortly after Irene’s center passed by San Juan on August 22 there were 800,000 homes without electric power and 118,000 without water service. The storm surge from Irene, as expected, was very minor. The highest surges measured were at Esperanza (Vieques) and Fajardo and reached 1.6 feet between 100 am and 200 am (0506z and 0530z respectively). This was during the time that the center of Irene was moving inland over Eastern Puerto Rico.

Damage from flooding was extensive across the region from Irene, however, though wind caused widespread damage it was relatively minor compared to a more significant hurricane. Numerous trees were blown down very early on Monday morning from Fajardo to San Juan Metro. Downed trees were reported to block highways in Gurabo, Adjuntas, Caguas while a down power pole lay on Highway PR-176 in Cupey.

On August 27 Puerto Rico had been declared a major disaster area, and by September 3 additional municipalities were added to provide aid to those impacted, and still more on September 13. In all, there were 29 municipalities approved for individual assistance to individuals and households while 37 municipalities were designated for public assistance to state and local governments and certain private nonprofit organizations for emergency work and the repair or replacement of disaster-damaged facilities.

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 Aug 21, 10:27 PM AST, 2 minutes earlier.

Area forecast discussion, Aug 21, 10:27 PM AST, 2 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE SAN JUAN PR
1027 PM AST SUN AUG 21 2011

.SYNOPSIS...TS IRENE CONTINUES TO STRENGTHEN THIS EVENING AND
EXPECTED TO MAKE LANDFALL IN SOUTHEAST PR OVERNIGHT.

&&

.DISCUSSION...IRENE CONTINUES TO INTENSIFY THIS EVENING AS SEEN ON
BASED VELOCITY DATA WITH 60 KT AT 6FT NEAR VIEQUES. CLOUD SHIELD
CONTINUES TO EXPAND THIS EVENING WITH A NICE CDO PATTERN. THIS ALL
SUGGESTS A WELL DEVELOPED AND INTENSIFYING CYCLONE. MOVEMENT HAS
SLOWED DOWN SIGNIFICANTLY PER REF ANIMATION BUT MORE RECENT RADAR
IMAGERY INDICATES THAT IRENE HAS RESUMED ITS MOTION. IMPACTS
REMAIN THE SAME WITH STRONG DAMAGING WINDS AND FLASH FLOODS.

&&

.AVIATION...TS CONDITIONS EXPECTED THROUGH MON MORNING.

&&

.MARINE...TS CONDITIONS WITH SEAS UP TO 14 FEET OBSERVED IN SOME BUOYS.

&&

.PRELIMINARY POINT TEMPS/POPS...
SJU  80  86  79  88 /  80  70  50  30
STT  80  88  80  87 /  90  70  50  20

&&

.SJU WATCHES/WARNINGS/ADVISORIES...
PR...HURRICANE WARNING FOR CENTRAL INTERIOR-CULEBRA-EASTERN INTERIOR-
     MAYAGUEZ AND VICINITY-NORTH CENTRAL-NORTHEAST-NORTHWEST-
     PONCE AND VICINITY-SAN JUAN AND VICINITY-SOUTHEAST-
     SOUTHWEST-VIEQUES-WESTERN INTERIOR.

     FLASH FLOOD WATCH THROUGH MONDAY AFTERNOON FOR CENTRAL INTERIOR-
     CULEBRA-EASTERN INTERIOR-MAYAGUEZ AND VICINITY-NORTH
     CENTRAL-NORTHEAST-NORTHWEST-PONCE AND VICINITY-SAN JUAN AND
     VICINITY-SOUTHEAST-SOUTHWEST-VIEQUES-WESTERN INTERIOR.

VI...FLASH FLOOD WATCH THROUGH MONDAY AFTERNOON FOR ST CROIX-ST.
     THOMAS/ST. JOHN/ADJACENT ISLANDS.

     HURRICANE WATCH FOR ST CROIX-ST. THOMAS/ST. JOHN/ADJACENT
     ISLANDS.

     TROPICAL STORM WARNING FOR ST CROIX-ST. THOMAS/ST. JOHN/ADJACENT
     ISLANDS.

&&

64/64

Hazardous weather outlook, Aug 20, 11:50 PM AST, 22 hours 39 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE SAN JUAN PR
1150 PM AST SAT AUG 20 2011

AMZ710>745-PRZ001>013-210500-
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-
1150 PM AST SAT AUG 20 2011

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

.DAY ONE...TONIGHT THROUGH MONDAY

A TROPICAL STORM WARNING CONTINUES FOR PUERTO RICO...CULEBRA AND
VIEQUES. PLEASE REFER TO ALL HURRICANE LOCAL STATEMENTS AND OTHER
LOCAL FORECAST PRODUCTS UNTIL FURTHER NOTICE.

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION WILL BE NEEDED
DURING THE PASSAGE OF TROPICAL STORM IRENE.

AMZ715-725-VIZ001-002-210500-
ST. THOMAS ST. JOHN ADJACENT ISLANDS-ST CROIX-
NEARSHORE ATLANTIC AND ADJACENT CARIBBEAN COASTAL WATERS-
1150 PM AST SAT AUG 20 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE U.S. VIRGIN ISLANDS AND THE
ADJACENT COASTAL WATERS.

.DAY ONE...TONIGHT THROUGH MONDAY

A TROPICAL STORM WARNING CONTINUES FOR ALL OF THE U.S. VIRGIN
ISLANDS. PLEASE REFER TO ALL HURRICANE LOCAL STATEMENTS AND OTHER
LOCAL FORECAST PRODUCTS UNTIL FURTHER NOTICE.

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION WILL BE NEEDED
DURING THE PASSAGE OF TROPICAL STORM IRENE.

The radar

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

Open the radar archive at this moment

Event by event

21 tropical storm, 18 flash flood, 7 debris flow, 2 flood. Local standard time, as filed.

Tropical Storm, Northeast

When: August 21, 10:29 PM AST to August 22, 2:00 PM AST
Where: Northeast forecast zone
Property damage: $4,000
Reported by: Newspaper

The roof from a residence was blown out in Barrio Isidro in Canovanas.

Flash Flood, Fajardo

When: August 22, 1:07 AM AST to 10:45 AM AST
Where: Fajardo County, 0.43 mi WNW of Fajardo to 0.44 mi NNW of Fajardo
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.322, -65.656

Rio Fajardo was reported out of its banks flooding road PR-3 with the intersection with highway PR-53.

Tropical Storm, Northeast

When: August 22, 2:22 AM AST to 2:00 PM AST
Where: Northeast forecast zone
Reported by: Newspaper

Tree branches were reported blocking road 30 in the municipality of Humacao.

Tropical Storm, San Juan and Vicinity

When: August 22, 2:32 AM AST to 2:00 PM AST
Where: San Juan and Vicinity forecast zone
Reported by: Newspaper

A big tree blocked three lanes of the Sabana Seca Avenue from east to west in the municipality of Levittown.

Tropical Storm, Eastern Interior

When: August 22, 2:35 AM AST to 2:00 PM AST
Where: Eastern Interior forecast zone
Reported by: Newspaper

Trees were blocking roads near Catalinas Mall in the municipality of Caguas.

Tropical Storm, Southeast

When: August 22, 2:40 AM AST to 2:00 PM AST
Where: Southeast forecast zone
Reported by: Emergency Manager

Many trees obstructed roadway 3 in route to Punta Santiago in the municipality of Humacao.

Tropical Storm, Northwest

When: August 22, 3:05 AM AST to 2:00 PM AST
Where: Northwest forecast zone
Reported by: Newspaper

A Bambu tree blocked road PR-2 in the municipality of Anasco.

Tropical Storm, Northwest

When: August 22, 5:23 AM AST to 2:00 PM AST
Where: Northwest forecast zone
Reported by: Emergency Manager

A tree was reported blocking road PR-2 near Pan Pepin store in the municipality of Aguadilla.

Tropical Storm, Southeast

When: August 22, 5:30 AM AST to 2:00 PM AST
Where: Southeast forecast zone
Reported by: Emergency Manager

Tree branches blocked road 184 between the municipality of Patillas and Guavate sector.

Tropical Storm, San Juan and Vicinity

When: August 22, 6:00 AM AST to 2:00 PM AST
Where: San Juan and Vicinity forecast zone
Reported by: Emergency Manager

Near 771 people were reported in shelters across 59 of Puerto Rico 78 municipalities. 800 thousand homes without service, 118 thousand customers without water service.

Tropical Storm, Central Interior

When: August 22, 6:19 AM AST to 2:00 PM AST
Where: Central Interior forecast zone
Reported by: Newspaper

A tree blocked road PR-150 between the municipalities of Villalba and Coamo.

Debris Flow, Ponce and Vicinity

When: August 22, 6:42 AM AST
Where: Ponce and Vicinity forecast zone
Reported by: Emergency Manager

A mudslide blocked road 128, km 22.0 in the municipality of Yauco.

Tropical Storm, Vieques

When: August 22, 7:38 AM AST to 2:00 PM AST
Where: Vieques forecast zone
Reported by: Newspaper

A big tree blocked road 997 and fell over power lines in the municipality of Vieques.

Tropical Storm, Eastern Interior

When: August 22, 7:42 AM AST to 2:00 PM AST
Where: Eastern Interior forecast zone
Reported by: Newspaper

A big tree blocked road PR-30 km 11.8 near the exit of road 185 in the municipality of Juncos.

Tropical Storm, Northeast

When: August 22, 8:00 AM AST to 2:00 PM AST
Where: Northeast forecast zone
Reported by: Emergency Manager

Downed trees were reported along road 193 and 983 in the municipality of Luquillo.

Tropical Storm, Western Interior

When: August 22, 8:00 AM AST to 2:00 PM AST
Where: Western Interior forecast zone
Reported by: Emergency Manager

Downed trees were blocking traffic along roads PR-123 Km 26.09, PR-135 Km 30.09 and PR-526 Km 2 in the municipality of Adjuntas.

Tropical Storm, Eastern Interior

When: August 22, 8:00 AM AST to 2:00 PM AST
Where: Eastern Interior forecast zone
Reported by: Emergency Manager

Large downed tree on PR 187 blocking ramp traffic from Caguas to Gurabo.

Tropical Storm, Eastern Interior

When: August 22, 8:00 AM AST to 2:00 PM AST
Where: Eastern Interior forecast zone
Reported by: Emergency Manager

Downed trees were reported along PR-52 Km 22.1 From Caguas to San Juan, PR-52 km 26.4 From Caguas to Cayey. Downed power cables in Bairoa,Caguas along PR-30.

Tropical Storm, Western Interior

When: August 22, 8:00 AM AST to 2:00 PM AST
Where: Western Interior forecast zone
Reported by: Emergency Manager

Downed tree blocking traffic along road PR-141 Km 19.1 in the municipality of Adjuntas.

Debris Flow, Western Interior

When: August 22, 8:00 AM AST
Where: Western Interior forecast zone
Reported by: Emergency Manager

A 6 meter landslide was reported along PR-611 in Utuado.

Tropical Storm, San Juan and Vicinity

When: August 22, 8:00 AM AST to 2:00 PM AST
Where: San Juan and Vicinity forecast zone
Reported by: Emergency Manager

Downed power pole with electric cables on roadway PR-176 in Cupey.

Flash Flood, Naguabo

When: August 22, 8:20 AM AST to 10:45 AM AST
Where: Naguabo County, Naguabo to 1.93 mi SSE of Naguabo
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.220, -65.730

PR-31 was reported flooded due to Rio Blanco out of its banks and PR-192 also flooded due to a creek out of its banks.

Flash Flood, Maunabo

When: August 22, 8:37 AM AST to 10:45 AM AST
Where: Maunabo County, Maunabo to 0.93 mi NW of Maunabo
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.000, -65.920

Rio Maunabo was reported out of its banks flooding road 759 and Barrio Tumbao, La Garona sector.

Debris Flow, San Juan and Vicinity

When: August 22, 10:04 AM AST
Where: San Juan and Vicinity forecast zone
Reported by: Newspaper

A landslide was reported at road 174 in the municipality of Guaynabo.

Tropical Storm, Vieques

When: August 22, 10:22 AM AST to 2:00 PM AST
Where: Vieques forecast zone
Reported by: Newspaper

Downed power lines blocked Buena Vista street, Barrio Ca on in the municipality of Vieques.

Flash Flood, Aibonito

When: August 22, 10:45 AM AST
Where: Aibonito County, 1.91 mi NW of Aibonito to 2.49 mi NW of Aibonito
Cause: Heavy Rain
Reported by: River/Stream Gage
Coordinates: 18.140, -66.270

The La Plata river USGS sensor in Aibonito indicated flood stage of 14.45 feet.

Debris Flow, Western Interior

When: August 22, 10:46 AM AST
Where: Western Interior forecast zone
Reported by: Newspaper

A lane of road PR-605 colapsed, isolating 300 families in Bibi Abajo community.

Flash Flood, Carolina

When: August 22, 12:12 PM AST to 2:00 PM AST
Where: Carolina County, 1.09 mi N of Carolina to 1.95 mi N of Carolina
Cause: Heavy Rain
Reported by: Newspaper
Coordinates: 18.386, -65.951

Roberto Clemente avenue was reported flooded near Autoridad Acueductos.

Flash Flood, Manati

When: August 22, 12:18 PM AST to 9:15 PM AST
Where: Manati County, 3.65 mi WNW of Manati to 5.54 mi WNW of Manati
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.432, -66.534

Rio Grande de Manati was reported out of its banks at highway PR-2, Cachete sector.

Tropical Storm, San Juan and Vicinity

When: August 22, 12:36 PM AST to 2:00 PM AST
Where: San Juan and Vicinity forecast zone
Reported by: Newspaper

Big tree blocked San Patricio Avenue, near Calvary Baptist Church in the municipality of Guaynabo.

Tropical Storm, Central Interior

When: August 22, 1:04 PM AST to 2:00 PM AST
Where: Central Interior forecast zone
Reported by: Newspaper

Road 141, Km 2.7 at Barrio Rio Grande was obstructed by trees in the municipality of Jayuya.

Flash Flood, Jayuya

When: August 22, 1:06 PM AST
Where: Jayuya County, 1.49 mi NNW of Jayuya to 1.17 mi NW of Jayuya
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.219, -66.591

Road 144 At Barrio Caricaboa was impassable due to a creek out of its banks.

Flash Flood, Luquillo

When: August 22, 1:13 PM AST
Where: Luquillo County, 2.39 mi NNW of Luquillo to 2.33 mi NNW of Luquillo
Cause: Heavy Rain
Reported by: Newspaper
Coordinates: 18.381, -65.736

Flooding was reported at road PR-3 near Luquillo Kiosks.

Flash Flood, Orocovis

When: August 22, 2:01 PM AST
Where: Orocovis County, 4.27 mi NNE of Orocovis to 2.68 mi NNE of Orocovis
Cause: Heavy Rain
Reported by: Newspaper
Coordinates: 18.280, -66.405

A creek was reported out of its banks flooding road 155, Los Sandovales sector. A couple of residents were trapped in their homes.

Flash Flood, Ciales

When: August 22, 2:08 PM AST to 9:15 PM AST
Where: Ciales County, 5.27 mi NE of Ciales to 5.97 mi NE of Ciales
Cause: Heavy Rain
Reported by: Newspaper
Coordinates: 18.337, -66.466

Families were removed from their homes due to Rio Grande de Manati out of its banks.

Flash Flood, Vega Alta

When: August 22, 2:40 PM AST to 11:45 PM AST
Where: Vega Alta County, 1.68 mi SW of Vega Alta to 2.21 mi SSW of Vega Alta
Cause: Heavy Rain
Reported by: Newspaper
Coordinates: 18.400, -66.345

Rio Cibuco was reported out of its banks at Fatima sector.

Flash Flood, Fajardo

When: August 22, 6:32 PM AST to August 23, 12:15 AM AST
Where: Fajardo County, 0.55 mi S of Fajardo to 1.18 mi SSW of Fajardo
Cause: Heavy Rain
Reported by: Newspaper
Coordinates: 18.312, -65.651

A car was stranded At PR-53 due to Rio Fajardo out of its banks. The person inside the car was rescued.

Debris Flow, Western Interior

When: August 22, 7:47 PM AST
Where: Western Interior forecast zone
Reported by: Department of Highways

A landslide was reported at PR-605,km 3.1 in the municipality of Utuado.

Debris Flow, Northeast

When: August 22, 11:15 PM AST
Where: Northeast forecast zone
Reported by: Newspaper

A big tree blocked road 30 near exit to University of Puerto Rico in Humacao.

Flash Flood, Carolina

When: August 23, 11:55 AM AST to 12:00 PM AST
Where: Carolina County, 6.06 mi NW of Carolina to 5.92 mi NW of Carolina
Cause: Heavy Rain
Reported by: Newspaper
Coordinates: 18.431, -66.016

The San Jose lagoon overflowed its banks near Villa Isla Verde apartments.

Flash Flood, Carolina

When: August 23, 12:00 PM AST
Where: Carolina County, 1.32 mi ESE of Carolina to 2.98 mi ESE of Carolina
Cause: Heavy Rain
Deaths: 1 direct, 0 indirect
Reported by: Newspaper
Coordinates: 18.364, -65.931

A 62 year old woman in her vehicle was overtaken by flood waters as she attempted to drive across a flooded roadway PR-857 in Barrio Canovanillas, Cohitre sector. The women was rescued by citizens and taken to a local hospital where she later died.

Flood, Vega Alta

When: August 23, 1:06 PM AST to 9:45 PM AST
Where: Vega Alta County, Vega Alta to 1.51 mi SE of Vega Alta
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.420, -66.330

PR-620 in Barrio Fatima, PR-647 at barrio Ojo de Agua and PR-675 and PR-676 at Barrio Bajuras were reported flooded due to Rio Cibuco out of its banks.

Flood, Manati

When: August 23, 1:13 PM AST to 9:15 PM AST
Where: Manati County, 2.53 mi W of Manati to 4.1 mi W of Manati
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.419, -66.519

Roads PR-666 and PR-667 were reported impassable due to Rio Grande de Manati out of its banks.

Debris Flow, North Central

When: August 23, 1:15 PM AST
Where: North Central forecast zone
Reported by: Newspaper

A lane of Road PR-123, Km 71.0 was obstructed by a tree in the municipality of Arecibo.

Flash Flood, Vega Baja

When: August 23, 1:21 PM AST to 9:15 PM AST
Where: Vega Baja County, Vega Baja to 1.37 mi ESE of Vega Baja
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.450, -66.380

Rio Indio was reported out of its banks flooding roads PR-160 with the intersection with road 4 at Barrio Arenales and road PR-155 at Barrio Colombo.

Flash Flood, Comerio

When: August 23, 1:27 PM AST to 9:00 PM AST
Where: Comerio County, 0.44 mi WNW of Comerio to 0.46 mi WNW of Comerio
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.222, -66.226

A 72 year old women was relocated from her home at Georgetti street in the urban area of Comerio due to flooding.

Flash Flood, Comerio

When: August 23, 1:55 PM AST to 5:00 PM AST
Where: Comerio County, Comerio to 0.66 mi S of Comerio
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.220, -66.220

Families were relocated from their homes due to flooding.

Flash Flood, Canovanas

When: August 23, 3:31 PM AST to 11:15 PM AST
Where: Canovanas County, Canovanas to 6 mi WNW of Canovanas
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.330, -65.880

Loiza Valley, Monte Verde sectors and Las Delicias at Barrio Isidro and Quintas in the municipality of Canovanas all were reported flooded.

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

Event	Date	Age	Sex	Where	Kind
Flash Flood, Carolina	2011-08-23	62	Female	Vehicle/Towed Trailer	Direct

What these are

Tropical Storm: A tropical cyclone with sustained winds of 34 to 63 knots (39 to 73 mph).
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.
Debris Flow: A fast-moving slurry of mud, rock and debris, usually on a slope soaked by heavy rain or stripped by a fire.
Flood: Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.

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

The same day elsewhere

Every storm in Puerto Rico in 2011 Every state in 2011 This day in weather history Warnings in Puerto Rico, August 2011 The 2011 hurricane season

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 2026-09-30. Each event’s entry at NCEI: 339754, 340486, 340196, 340197, 340198, 340200, 340202, 340203, 340205, 340024, 340452, 340453, 340454, 340455, 340013, 340014, 340015, 340017, 340018, 340019, 340021, 340456, 340457, 340458, 340459, 340023, 340460, 341385, 340461, 341386, 341387, 341388, 341391, 341393, 341397, 341400, 341404, 341405, 339760, 341406, and more.