Flash Flooding and Debris Flows in Puerto Rico, June 8 to 10, 2021

Name: Flash Flooding and Debris Flows in Puerto Rico, June 8 to 10, 2021
Start: 2021-06-08T17:00
End: 2021-06-10T13:00
Location: Puerto Rico

June 8 to 10, 2021 · NWS SJU · 46 events in 14 counties and zones

A mid and upper-level trough across the western Atlantic along with abundant moisture resulted in a favorable environment for multiple days of heavy rainfall activity across portions of the eastern half of Puerto Rico.

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: $14,000
Crop damage: None recorded
Events: 46

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.

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 Jun 8, 4:51 PM AST, 9 minutes earlier.

Area forecast discussion, Jun 8, 4:51 PM AST, 9 minutes before

Area Forecast Discussion
National Weather Service San Juan PR
451 PM AST Tue Jun 8 2021

.SYNOPSIS...

An unstable weather pattern will hold through the weekend as a
trough aloft couples with a tropical wave over the forecast area.
Therefore, the associated moisture is expected to continue
increasing cloudiness, shower and isolated thunderstorm activity
inland and across the local waters, mainly in the afternoons.
Choppy conditions are expected across the regional waters for the
next couple of days.

&&

.SHORT TERM...Tonight through Thursday...

The combination of the weak tropical wave south of the islands and
an upper- level trough over the Atlantic calls for moist and
unstable weather conditions through most of the short term period.
These features will increase low level moisture convergence
across the area. That combined with local effects and daytime
heating, will increase the potential for widespread showers and
isolated thunderstorm activity across the area during the
afternoons.

The main threat for these areas will be urban and small stream
flooding with the heaviest and most persistent rains. Some streamer-
like shower activity downwind from El Yunque cannot be ruled out and
therefore the San Juan metro area could also observe active weather
each afternoon. There is good potential for isolated thunderstorm
activity during the afternoons mainly due to daytime heating,
local forcing and the proximity of the amplifying upper- level
trough. However, cloudiness could delay surface heating and
decrease instability. Thus, some areas of the islands may not
reach the convective temperature needed for thunderstorm
development.

.LONG TERM...Friday through Tuesday...From Prev. Discussion...

A TUTT-low will promote a jet stream aloft through at least late
Saturday night. Although model guidance suggests the jet weakening
by Saturday night, the trough will linger over the region through
at least Tuesday. Meanwhile, at low levels, the upper-level
feature will induce a set of induced surface trough Friday through
Sunday, and moisture will pool over the islands through late
Saturday or Sunday. Then, a drier airmass with Suspended African
Dust would replace this moist airmass by late Saturday night into
early next week. At this time, there is some discrepancy in how
fast the atmosphere will dry out, but something is inevitable, and
it is that the unstable and wet pattern could last through at
least the upcoming weekend. Model guidance suggests a tropical
wave arriving at the local islands by late Monday night or early
Tuesday.

That said, expect unsettled weather conditions through at least
Saturday, with much less shower activity Sunday into Monday. The
potential to observe strong thunderstorms with downpours events
will remain possible Thursday and Friday. Therefore, if the short-
term rains saturated soils and increase river levels, the
possibility of observing flooding and even mudslides will remain
high for the end of the workweek. Then, hazy skies with much less
rain activity will be possible for the weekend and through
Monday. Then on Tuesday, if the dense and extensive dry air mass
with African Dust does not consume the tropical wave, a better
chance to observe wetting rains and thunderstorms will be possible
with the wave's arrival.

&&

.AVIATION...

VFR at all local terminals durg prd. The proximity of an upper level
trough, and a tropical wave crossing the E Caribbean will maintain
SCT-BKN lyrs nr FL022...FL050...FL100. BKN-OVC lyrs btw FL180-FL250
due to convective cloud debris across the flying area. SHRA/Isold
TSRA will continue ovr the local waters en route btw islands with
brief MVFR psbl. Mtn top obscr ovr the interior and eastern PR with
SHRA/Low CIG. VCSH/VCTS psbl at all local aerodromes til 08/23Z. Sfc
wnd fm ENE 15-20 kts w/ocnl hir gusts bcmg E-SE 10 kts or less aft
08/23Z.

&&

.MARINE...

An upper-level trough will promote thunderstorm development
throughout the week, especially each afternoon through early in
the evening. Choppy conditions are expected across the regional
waters. Seas are up to seas up to 6 feet across the offshore
Atlantic waters and up to 5 feet elsewhere. Easterly winds around
15 knots are also expected.

For the beachgoers, the moderate risk of rip currents will
continue across the beaches in the north, east, and southeast
coast of Puerto Rico, Vieques, Culebra, and the U.S. Virgin
Islands through at least tonight. Then, it's forecast to become
low at St Thomas and St John tomorrow, and the rest of the islands
by Thursday.

&&

.PRELIMINARY POINT TEMPS/POPS...
SJU  75  85  75  86 /  60  70  50  60
STT  75  86  75  87 /  70  70  80  60

&&

.SJU WATCHES/WARNINGS/ADVISORIES...
PR...None.
VI...None.
AM...None.
&&

SHORT TERM...DS
LONG TERM....FRG
PUBLIC DESK...GL

Hazardous weather outlook, Jun 8, 5:41 AM AST, 11 hours 19 minutes before

Perspectivas sobre Condiciones Peligrosas del Tiempo
Servicio Nacional de Meteorologia en San Juan PR
336 AM AST martes 8 de junio de 2021

AMZ710>745-PRZ001>013-090745-
San Juan y Vecindad-Noreste-Sureste-Este Interior-Norte Central-
Interior Central-Ponce y Vecindad-Noroeste-Oeste Interior-
Mayaguez y Vecindad-Suroeste-Culebra-Vieques-Las aguas costeras
cercanas y lejanas a la costa del Atlantico y Caribe-
336 AM AST martes 8 de junio de 2021

Esta perspectiva sobre las condiciones peligrosas del tiempo es para
Puerto Rico y las aguas costeras del Atlantico.

.Dia Uno...Hoy y esta noche

.Tronadas...Existe el potencial de tronadas con lluvias fuertes y
vientos en rafaga breves esta tarde a traves de Puerto Rico.

.Inundaciones...Lluvias fuertes pudieran resultar en inundaciones
urbanas y de riachuelos.

.Vientos...Se esperan vientos sostenidos en exceso de 20 MPH (17
nudos) a traves de las aguas del Atlantico.

.Oleaje...Se espera oleaje picado de hasta 6 pies a traves de las
aguas del Atlantico.

.Corrientes Marinas...Existe un riesgo moderado de corrientes
marinas para la mayoria de las playas locales.

.Dias dos hasta el siete...miercoles a lunes

Una vaguada en los niveles altos y un aumento en la humedad a traves
del area resultara en aguaceros y tronadas hasta el miercoles. Esto
aumentara la amenaza de inundaciones urbanas y de riachuelos. El
riesgo moderado de corrientes marinas continuara hasta finales de
semana.

.Comunicado sobre informacion reportada por observadores...

No se espera activacion amplia de observadores. Favor de reportar
cualquier informacion sobre inundaciones, oleaje y corrientes marinas
al Servicio Nacional de Meteorologia en San Juan mientras siguen las
indicaciones de las autoridades locales y estatales.

AMZ715-725-VIZ001-002-090745-
San Tomas, San John e Islas Adyacentes-Santa Cruz-
Aguas cercanas del Atlantico y aguas costeras adyacentes del Caribe-
336 AM AST martes 8 de junio de 2021

Esta perspectiva sobre las condiciones peligrosas del tiempo es para
Islas Virgenes Estadounidenses y las aguas costeras adyacentes.

.Dia Uno...Hoy y esta noche

.Tronadas...Existe la probabilidad de tronadas con lluvias fuertes y
rafagas de vientos esta tarde a traves de las Islas Virgenes
Americanas.

.Inundaciones...Lluvias de moderadas a fuertes pudieran resultar en
inundaciones urbanas y de riachuelos.

.Vientos...Se esperan vientos sostenidos en exceso de 20 MPH (17
nudos) a traves de las Aguas del Caribe.

.Oleaje...Se espera oleaje picado a traves de las aguas del
Atlantico y del Caribe.

.Corrientes Marinas...Existe un riesgo moderado de corrientes
marinas para la mayoria de las playas locales.

.Dias dos hasta el siete...miercoles a lunes

Una vaguada en los niveles altos y un aumento en la humedad a traves
del area local promoveran el desarrollo de aguaceros y tronadas
hasta el miercoles. Esto aumentara la amenaza de inundaciones
urbanas y de riachuelos. El riesgo moderado de corrientes marinas
continuara hasta finales de semana.

.Comunicado sobre informacion reportada por observadores...

No se espera activacion amplia de observadores. Favor de reportar
cualquier informacion sobre vientos, oleaje y corrientes marinas al
Servicio Nacional de Meteorologia en San Juan mientras siguen las
indicaciones de las autoridades locales y estatales.

The radar

The San Juan radar (TJUA), 12 km away, was scanning. The volume nearest the first event began at 21:00 UTC.

Open the radar archive at this moment

Event by event

17 flash flood, 16 flood, 11 debris flow, 1 heavy rain, 1 thunderstorm wind. Local standard time, as filed.

Debris Flow, Patillas

When: June 8, 5:00 PM AST
Where: Patillas County, 1.19 mi NW of Patillas to 0.81 mi N of Patillas
Cause: Heavy Rain
Reported by: Broadcast Media
Coordinates: 18.031, -66.014

Mudslide reported along Road PR-181 in Barrio Marin.

Debris Flow, Patillas

When: June 8, 5:00 PM AST
Where: Patillas County, 6.65 mi NNW of Patillas to 5.54 mi NNW of Patillas
Cause: Heavy Rain
Reported by: Broadcast Media
Coordinates: 18.102, -66.053

Mudslide reported along Road PR-184 in Sector Miraflores.

Flood, San Juan

When: June 8, 8:00 PM AST to 9:30 PM AST
Where: San Juan County, 2.6 mi NNW of San Juan to 2.58 mi NNW of San Juan
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.415, -66.065

Flooding reported in Calle Jose A.V. Canals.

Flash Flood, Bayamon

When: June 9, 2:05 PM AST to 4:15 PM AST
Where: Bayamon County, 1.91 mi E of Bayamon to 1.93 mi E of Bayamon
Cause: Heavy Rain
Property damage: $500
Reported by: 911 Call Center
Coordinates: 18.348, -66.141

Calle 4 was flooded with water entering into houses in Sector Villas de San Agustin.

Flash Flood, Bayamon

When: June 9, 2:15 PM AST to 4:15 PM AST
Where: Bayamon County, 1.79 mi E of Bayamon to 1.78 mi E of Bayamon
Cause: Heavy Rain
Property damage: $500
Reported by: Emergency Manager
Coordinates: 18.351, -66.143

Flooded roads in Urbanization Las Americas with water entering into some homes.

Debris Flow, Bayamon

When: June 9, 2:30 PM AST to 4:15 PM AST
Where: Bayamon County, 1.86 mi S of Bayamon to 1.82 mi SSE of Bayamon
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.323, -66.165

Mudslide reported along Road PR-830 Sector Santa Olaya.

Flood, Bayamon

When: June 9, 2:30 PM AST to 4:15 PM AST
Where: Bayamon County, 4.64 mi N of Bayamon to 4.3 mi N of Bayamon
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.417, -66.164

Road PR-167 near Residencial Brisas had minor flooding.

Flash Flood, Guaynabo

When: June 9, 2:30 PM AST to 4:15 PM AST
Where: Guaynabo County, 7.33 mi NW of Guaynabo to 7.08 mi NW of Guaynabo
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.406, -66.108

Flooding reporting along PR-20 near the WAPA TV station due to Quebrada margarita going out of its banks.

Debris Flow, Trujillo Alto

When: June 9, 2:40 PM AST to 4:15 PM AST
Where: Trujillo Alto County, 1.92 mi SE of Trujillo Alto to 1.85 mi SE of Trujillo Alto
Cause: Heavy Rain
Reported by: 911 Call Center
Coordinates: 18.313, -65.977

Mudslide reported in Calle 1 in Ramon C Colon Community.

Heavy Rain, Naguabo

When: June 9, 2:50 PM AST to 3:45 PM AST
Where: Naguabo County, 5.97 mi WNW of Naguabo to 4.57 mi WNW of Naguabo
Reported by: Emergency Manager
Coordinates: 18.268, -65.806

Four people, all tourists, were trapped due to a water surge near the Infinity pool recreation area near Rio Cubuy.

Flood, Manati

When: June 9, 3:25 PM AST to 4:00 PM AST
Where: Manati County, 1.08 mi NW of Manati to 1.02 mi NW of Manati
Cause: Heavy Rain
Reported by: 911 Call Center
Coordinates: 18.431, -66.492

Flooding reported along Road PR-2 near the AEE operations area.

Debris Flow, Trujillo Alto

When: June 9, 3:40 PM AST to 4:15 PM AST
Where: Trujillo Alto County, 1.19 mi WSW of Trujillo Alto to 1.13 mi W of Trujillo Alto
Cause: Heavy Rain
Reported by: 911 Call Center
Coordinates: 18.326, -66.018

Mudslide reported along Road PR-175 across from the Carraizo Reservoir.

Flood, Naguabo

When: June 9, 5:00 PM AST to 7:45 PM AST
Where: Naguabo County, 1.06 mi SW of Naguabo to 1.08 mi SW of Naguabo
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.209, -65.741

Flooding reported along Road PR-927 near Urbanization City Palace.

Flood, Naguabo

When: June 9, 5:00 PM AST to 7:45 PM AST
Where: Naguabo County, 1.44 mi SSW of Naguabo to 1.55 mi SSW of Naguabo
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.201, -65.740

Flooding reported along Urbanization Vistas de Naguabo.

Thunderstorm Wind, Naguabo

When: June 9, 5:00 PM AST
Where: Naguabo County, 1.9 mi NNE of Naguabo to 1.31 mi NE of Naguabo
Measured: 30 kt (35 mph) estimated gust
Property damage: $500
Reported by: Emergency Manager
Coordinates: 18.243, -65.715

Tree fell on Road PR-972 in Barrio Mariana.

Flood, Ceiba

When: June 9, 5:00 PM AST to 7:45 PM AST
Where: Ceiba County, 2.76 mi WSW of Ceiba to 2.52 mi WSW of Ceiba
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.234, -65.668

Flooding reported along Road PR-3 in Barrio Quebrada Seca.

Flood, Ceiba

When: June 9, 5:00 PM AST to 7:45 PM AST
Where: Ceiba County, 2.21 mi NNW of Ceiba to 2.19 mi NNW of Ceiba
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.277, -65.648

Flooding reported along the road that runs along Costa Esmeralda Condominum and Costa Brava.

Debris Flow, Luquillo

When: June 9, 5:00 PM AST to 7:45 PM AST
Where: Luquillo County, 1.52 mi SSE of Luquillo to 1.84 mi SE of Luquillo
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.331, -65.708

Mudslide reported along Road PR-9988 KM 2.6.

Debris Flow, Naguabo

When: June 9, 5:00 PM AST to 7:45 PM AST
Where: Naguabo County, 1.86 mi NNW of Naguabo to 1.17 mi NNW of Naguabo
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.244, -65.742

Mudslide reported along Road PR-971 in Barrio Duque, Sector Tablones.

Flash Flood, Naguabo

When: June 9, 5:00 PM AST to 7:45 PM AST
Where: Naguabo County, 2.66 mi E of Naguabo to 2.78 mi E of Naguabo
Cause: Heavy Rain
Property damage: $1,000
Reported by: Emergency Manager
Coordinates: 18.222, -65.689

Flooding reported on Road PR-3 in Barrio Daguao. Car had to be removed due to the flood waters.

Flood, Naguabo

When: June 9, 5:00 PM AST to 7:45 PM AST
Where: Naguabo County, 1.57 mi ESE of Naguabo to 1.71 mi ESE of Naguabo
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.210, -65.708

Flooding reported on Road PR-3 near Barrio Santiago y Lime.

Flood, Naguabo

When: June 9, 5:00 PM AST to 7:45 PM AST
Where: Naguabo County, 0.63 mi SW of Naguabo to 0.67 mi S of Naguabo
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.215, -65.738

Flooding reported along Road PR-31 across from Ralphs Supermarket as well as near Apartamentos Rodriguez.

Flood, Naguabo

When: June 9, 5:00 PM AST to 7:45 PM AST
Where: Naguabo County, 2.13 mi E of Naguabo to 2.12 mi E of Naguabo
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.224, -65.698

Flooding along Road PR-973 across from Urbanization Casas Bellas.

Flood, Naguabo

When: June 9, 5:00 PM AST to 7:45 PM AST
Where: Naguabo County, 0.09 mi WNW of Naguabo to 0.55 mi ENE of Naguabo
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.220, -65.731

Flooding along Road PR-971 below PR-53.

Flood, Naguabo

When: June 9, 5:00 PM AST to 7:45 PM AST
Where: Naguabo County, 0.55 mi SW of Naguabo to 0.59 mi SW of Naguabo
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.214, -65.736

Flooding reported along Calle Juan R. Garzot across from Medina Laboratory.

Flash Flood, Humacao

When: June 9, 5:20 PM AST to 8:15 PM AST
Where: Humacao County, 1.44 mi NNE of Humacao to 1.34 mi NNE of Humacao
Cause: Heavy Rain
Property damage: $1,000
Reported by: Emergency Manager
Coordinates: 18.149, -65.791

Flooding reported along Road PR-3 next to Rooms to Go store. People were trapped inside vehicles with water entering the vehicles.

Flash Flood, Carolina

When: June 10, 10:30 AM AST to 1:00 PM AST
Where: Carolina County, 1.59 mi E of Carolina to 1.61 mi E of Carolina
Cause: Heavy Rain
Property damage: $500
Reported by: 911 Call Center
Coordinates: 18.374, -65.926

Flooding reported along Calle Orquidea with water entering residences.

Flood, San Juan

When: June 10, 10:30 AM AST to 1:00 PM AST
Where: San Juan County, 5.48 mi NNW of San Juan to 5.26 mi NNW of San Juan
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.457, -66.071

Several roads were flooded in the area of Condado-Avenida Wilson, Calle Caribe, and across from the Mariott Hotel.

Flood, San Juan

When: June 10, 10:30 AM AST to 1:00 PM AST
Where: San Juan County, 5.19 mi N of San Juan to 4.8 mi N of San Juan
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.454, -66.060

Flooding reported across several roads in Ocean Park and in Punta Las Marias as well as in the area of Residencial Luis Llorens Torres.

Flood, Loiza

When: June 10, 10:30 AM AST to 1:00 PM AST
Where: Loiza County, 2.74 mi SE of Loiza to 3.22 mi SE of Loiza
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.389, -65.874

Flooding reported in several streets in the Urbanization of Villa Loiza.

Flash Flood, San Juan

When: June 10, 10:30 AM AST to 1:00 PM AST
Where: San Juan County, 4.62 mi N of San Juan to 4.41 mi N of San Juan
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.447, -66.052

Flooding reported along Calle Betances in Santurce with people trapped.

Flash Flood, San Juan

When: June 10, 10:30 AM AST to 1:00 PM AST
Where: San Juan County, 5.11 mi NNW of San Juan to 5.03 mi N of San Juan
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.452, -66.069

Significant flooding reported along Expresso Bardorioty near Tunel Minillas.

Flood, Carolina

When: June 10, 10:47 AM AST to 1:00 PM AST
Where: Carolina County, 7.02 mi NW of Carolina
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.440, -66.028

Flooding reported along Calle Hermanos Rodriguez Emma.

Flash Flood, San Juan

When: June 10, 10:48 AM AST to 1:00 PM AST
Where: San Juan County, 4.6 mi N of San Juan to 4.42 mi N of San Juan
Cause: Heavy Rain
Property damage: $500
Reported by: 911 Call Center
Coordinates: 18.447, -66.050

Flooding reported in Calle Palacios in Santurce flooding a house.

Flash Flood, Carolina

When: June 10, 10:48 AM AST to 1:00 PM AST
Where: Carolina County, 7.11 mi NW of Carolina to 7.13 mi NW of Carolina
Cause: Heavy Rain
Property damage: $500
Reported by: Emergency Manager
Coordinates: 18.441, -66.029

Flooding reported along Calle El Palmar Sur in the area of Isla Verde with water entering residences.

Flash Flood, Canovanas

When: June 10, 10:50 AM AST to 1:00 PM AST
Where: Canovanas County, 3.48 mi NNW of Canovanas to 3.42 mi N of Canovanas
Cause: Heavy Rain
Property damage: $1,000
Reported by: 911 Call Center
Coordinates: 18.379, -65.891

Flooding reported along the Marginal of Road PR-3 across from El Pilar Cemetery. Person was trapped inside vehicle.

Flash Flood, Rio Grande

When: June 10, 11:00 AM AST to 1:00 PM AST
Where: Rio Grande County, 2.03 mi ENE of Rio Grande to 2.17 mi ENE of Rio Grande
Cause: Heavy Rain
Property damage: $1,000
Reported by: Emergency Manager
Coordinates: 18.360, -65.771

Flooding reported along Road PR-191 in Sector La Vega. Water entered a residence causing some damages.

Debris Flow, Rio Grande

When: June 10, 11:00 AM AST to 1:00 PM AST
Where: Rio Grande County, 0.36 mi WSW of Rio Grande to 0.83 mi SW of Rio Grande
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.348, -65.805

Several mudslides reported along Road PR-966.

Flash Flood, Rio Grande

When: June 10, 11:00 AM AST to 1:00 PM AST
Where: Rio Grande County, 0.82 mi E of Rio Grande to 0.94 mi E of Rio Grande
Cause: Heavy Rain
Property damage: $2,000
Reported by: Emergency Manager
Coordinates: 18.352, -65.788

Flooding reported along Road PR-966 in Barrio Zarzal. Several home were flooded with some property damage reported.

Flash Flood, Rio Grande

When: June 10, 11:00 AM AST to 1:00 PM AST
Where: Rio Grande County, 1.1 mi NNW of Rio Grande to 0.64 mi NNW of Rio Grande
Cause: Heavy Rain
Property damage: $2,000
Reported by: Emergency Manager
Coordinates: 18.363, -65.809

Flooding reported along Road PR-967 in Barrio Las Tres T. Several home were flooded with some damages.

Flash Flood, Rio Grande

When: June 10, 11:00 AM AST to 1:00 PM AST
Where: Rio Grande County, 1.65 mi N of Rio Grande to 1.57 mi NNE of Rio Grande
Cause: Heavy Rain
Property damage: $1,000
Reported by: Emergency Manager
Coordinates: 18.374, -65.798

Flooding reported along Calle Zorzal. Water entered a residence causing some damages.

Flash Flood, Rio Grande

When: June 10, 11:00 AM AST to 1:00 PM AST
Where: Rio Grande County, 1.37 mi W of Rio Grande to 1.32 mi W of Rio Grande
Cause: Heavy Rain
Property damage: $1,000
Reported by: Emergency Manager
Coordinates: 18.351, -65.821

Flooding reported in Calle Higuey. Water entered a residence resulting in some damages.

Flash Flood, Rio Grande

When: June 10, 11:00 AM AST to 1:00 PM AST
Where: Rio Grande County, 4.99 mi WNW of Rio Grande
Cause: Heavy Rain
Property damage: $1,000
Reported by: Emergency Manager
Coordinates: 18.373, -65.872

Flooding reported in Calle Corozo. Water entered a couple of residences causing some damages.

Debris Flow, Rio Grande

When: June 10, 11:00 AM AST to 1:00 PM AST
Where: Rio Grande County, 1.89 mi WSW of Rio Grande to 2.62 mi SW of Rio Grande
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.344, -65.828

Several mudslides reported along Road PR-186.

Debris Flow, Rio Grande

When: June 10, 11:00 AM AST to 1:00 PM AST
Where: Rio Grande County, 5.09 mi WSW of Rio Grande
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.315, -65.868

Couple of mudslides reported along Road PR-957.

Debris Flow, Luquillo

When: June 10, 11:30 AM AST to 1:00 PM AST
Where: Luquillo County, 2.84 mi SW of Luquillo to 2.54 mi SW of Luquillo
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 18.320, -65.750

Mudslide reported along Road PR-988 KM 12.2.

What these are

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.
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.
Heavy Rain: Rainfall totals unusual for the place and season that did not produce a flood.
Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

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

The same day elsewhere

Every storm in Puerto Rico in 2021 Every state in 2021 This day in weather history Warnings in Puerto Rico, June 2021

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: 965198, 965199, 965200, 966049, 966052, 966053, 966054, 966056, 966057, 966058, 966324, 966328, 966333, 966336, 966338, 966359, 966378, 966379, 966380, 966381, 966382, 967166, 967168, 967169, 967170, 967171, 967286, 967287, 967288, 968802, 968804, 968805, 968807, 968808, 968809, 968810, 968820, 968822, 968834, 968835, and more.