Heat Advisory
* WHAT...This level of heat affect most individuals sensitive to
heat, especially those without effective cooling and/or adequate
hydration. Impacts possible in some health system and in
heat-sensitive industries.
* WHERE...All urban and coastal areas of Puerto Rico, as well as the
eastern interior of Puerto Rico, Vieques, Culebra, and the U.S.
Virgin Islands.
* WHEN...Until 5 PM AST this afternoon.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
From: Oct 30, 2025 18:19
Until: Oct 30, 2025 21:00
Rip Current Statement
* WHAT...High Rip Current Risk, life-threatening rip current.
* WHERE...Beaches from northwestern to northeastern Puerto Rico
and Culebra.
* WHEN...From this evening through late tonight.
* IMPACTS...Rip currents can sweep even the best swimmers away
from shore into deeper water, where it becomes difficult to
return to safety.
From: Oct 28, 2025 07:17
Until: Oct 28, 2025 15:30
High Surf Advisory
* WHAT...For the High Surf Advisory, large breaking waves of 6 to
11 feet. For the HIGH RIP CURRENT RISK, life-threatening rip
current.
* WHERE...For the High Surf Advisory, the most vulnerable areas
for high surf and beach erosion include Pinones along Road 187,
Parcelas Suarez, Villas del Mar, and Villa Christiana in Loiza;
Fortuna in Luquillo; Pueblo and Tamarindo in Aguadilla; Bario
Obrero, Pueblo and Jareaito in Arecibo; Las Boca in Barceloneta;
Machuca in Manati; Puerto Nuevo in Vega Baja; Ocean Park in San
Juan; and Barrio Espinal in Aguada. For the High Rip Current
Risk, beaches of northwestern to northeastern Puerto Rico.
* WHEN...For the High Surf Advisory from 6 AM to 6 PM AST Sunday.
For the High Rip Current Risk, remains through late Sunday
night.
* IMPACTS...For the High Surf Advisory, High waves that can wash
over jetties and sweep people and pets onto jagged rocks. Rough
surf may also knock you down. Large breaking waves will result
in localized beach/dune structure erosion and dangerous swimming
conditions. For the High Rip Current Risk, rip currents can
sweep even the best swimmers away from shore into deeper water,
where it becomes difficult to return to safety.
* ADDITIONAL DETAILS...A pulse of long-period northeasterly swell
from Major Hurricane Humberto will increase seas across the
local waters through the weekend, with breaking waves forecast
to build up to 10-12 feet. These hazardous and potentially life-
threatening conditions will gradually subside as the system
moves away, with coastal conditions improving on Monday.
From: Sep 27, 2025 20:23
Until: Sep 28, 2025 10:00
Rip Current Statement
* WHAT...For the High Surf Advisory, large breaking waves of 6 to
11 feet. For the HIGH RIP CURRENT RISK, life-threatening rip
current.
* WHERE...For the High Surf Advisory, the most vulnerable areas
for high surf and beach erosion include Pinones along Road 187,
Parcelas Suarez, Villas del Mar, and Villa Christiana in Loiza;
Fortuna in Luquillo; Pueblo and Tamarindo in Aguadilla; Bario
Obrero, Pueblo and Jareaito in Arecibo; Las Boca in Barceloneta;
Machuca in Manati; Puerto Nuevo in Vega Baja; Ocean Park in San
Juan; and Barrio Espinal in Aguada. For the High Rip Current
Risk, beaches of northwestern to northeastern Puerto Rico.
* WHEN...For the High Surf Advisory from 6 AM to 6 PM AST Sunday.
For the High Rip Current Risk, remains through late Sunday
night.
* IMPACTS...For the High Surf Advisory, High waves that can wash
over jetties and sweep people and pets onto jagged rocks. Rough
surf may also knock you down. Large breaking waves will result
in localized beach/dune structure erosion and dangerous swimming
conditions. For the High Rip Current Risk, rip currents can
sweep even the best swimmers away from shore into deeper water,
where it becomes difficult to return to safety.
* ADDITIONAL DETAILS...A pulse of long-period northeasterly swell
from Major Hurricane Humberto will increase seas across the
local waters through the weekend, with breaking waves forecast
to build up to 10-12 feet. These hazardous and potentially life-
threatening conditions will gradually subside as the system
moves away, with coastal conditions improving on Monday.
From: Sep 27, 2025 20:23
Until: Sep 28, 2025 10:00
Rip Current Statement
* WHAT...High Rip Current Risk, life-threatening rip currents.
* WHERE...North and east facing beaches of Puerto Rico.
* WHEN...From this afternoon through Sunday night.
* IMPACTS...Rip currents can sweep even the best swimmers away
from shore into deeper water, where it becomes difficult to
return to safety.
* ADDITIONAL DETAILS...A long period northeasterly swell generated
by Major Hurricane Humberto will gradually increase seas across
the Atlantic waters and passages through the weekend. This swell
will result in breaking waves around 6 feet and occasionally
higher with life-threatening rip currents from late this
afternoon along the northern beaches of PR. The high risk of rip
currents will spread across the rest of the islands on Sunday.
From: Sep 27, 2025 08:00
Until: Sep 27, 2025 22:00
Extreme Heat Warning
* WHAT...This level of heat affects anyone without effective cooling
and/or adequate hydration. Impacts likely in some health systems,
heat-sensitive industries and infrastructure.
* WHERE...Eastern Interior, Mayaguez and Vicinity, North Central,
Northeast, Northwest, Ponce and Vicinity, San Juan and Vicinity,
Southeast, and Southwest Counties.
* WHEN...From 10 AM this morning to 5 PM AST this afternoon.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.
From: Sep 27, 2025 06:44
Until: Sep 27, 2025 14:45
Hydrologic Outlook
ESFSJU
A strong tropical wave, designated as Invest 94L by the National
Hurricane Center, will approach the local islands as early as
Tuesday night, enhancing the chances of flooding through at least
late Thursday.
The first round of showers will reach the Virgin Islands on Tuesday
night and early Wednesday, with periods of moderate to heavy rain
anticipated. The rain will then spread across Vieques, Culebra, and
east and southeast Puerto Rico. This unsettled weather pattern is
expected to linger into at least Thursday. So far, the heaviest
activity should be focused along the vicinity of the Virgin Islands
and the eastern third of Puerto Rico.
The tropical wave appears to have a good structure in the low and
mid levels, and a big area of above than normal moisture content.
Also, previous rainfalls maintain soils saturated along portions of
the interior, western and the extreme east of Puerto Rico. Soils are
also saturated in portions of St.Croix and St. Thomas, according to
the National Moisture Soil Analysis. However, soils are not
saturated along the east-interior, and most of southern Puerto Rico.
U.S.Geological Survey sensors shows that most streams are running
near normal, but some rivers are running below normal in the
east-interior and southeast.
Although it is not expected to be raining all day long, or
everywhere at the same time, this wet period will increase the
likelihood of experiencing urban and small stream flooding,
landslides, rapid river rises, and isolated flash flood and rivers
reaching flood stage. It is worth mentioning, that even though
rivers are not as high in the east, these rivers tend to react
quickly. Across the Virgin Islands, water surges along drainage guts
are a concern as well.
The local guidance are in agreement that the territories will
observe these rains, but there is some uncertainty in the exact
amounts, timing and location. For now, the official forecast calls
for 2 to 4 inches and isolated amounts up to 6 inches through the
entire period (late Tuesday through late Thursday).
Residents and visitors are urged to stay away from rivers and flood
prone areas, and to stay tuned to any changes in the forecast and
flood products issued by the Weather Forecast Office.
From: Sep 23, 2025 14:06
Until: Sep 27, 2025 00:00
Hydrologic Outlook
ESFSJU
The active afternoons experienced in the past couple of days have
maintained saturated soils along a great portion of the interior and
west of Puerto Rico. These rains have also recharged must of the
stream channels in Puerto Rico, with the exceptions of a few river
in the eastern-interior and southeast.
The forecast for this week calls for a low level disturbance moving
in today, and a tropical wave coupled with an upper level low
arriving on Wednesday and Thursday.
With the disturbance reaching the islands today, the best chances of
heavy showers and thunderstorms are early for the Virgin Islands,
and then this activity will spread into Puerto Rico, reaching the
east, the San Juan metro area, the interior and west.
The wave moving in on Wednesday and Thursday looks stronger, and
will likely cause an increase in the coverage of showers and
thunderstorms in Puerto Rico and the Virgin Islands. So far, the
event is not expected to be a complete wash out, but the local
guidance are hinting on an upper and low level atmospheric pattern
favorable for rainfall production.
The main threats in Puerto Rico for most of the workweek will be the
risk of urban and isolated flash flooding, landslides, water surges
along rivers, and some rivers reaching flood stage. Rainfall
accumulation could range from 1-2 inches each day, with higher
isolated amounts, especially on Wednesday and Thursday.
The main threats in the Virgin Islands are water surges along
drainage guts, ponding of water in roadways and low-lying areas, and
isolated urban flood and landslides. Rainfall accumulation could
range from up to an inch each day, and very isolated higher amounts.
The users should continue to monitor the evolution of the forecast,
and stay tuned for any flood products issued by the National Weather
Service. This product will be updated again only if conditions
change.
From: Sep 15, 2025 07:18
Until: Sep 17, 2025 12:15
Special Weather Statement
At 220 PM AST, Doppler radar was tracking strong thunderstorms along
a line extending from Brenas to Coto Norte to near Ciales. Movement
was west at 15 mph.
HAZARD...Wind gusts up to 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
From: Sep 15, 2025 18:21
Until: Sep 15, 2025 19:00
Heat Advisory
* WHAT...This level of heat affect most individuals sensitive to
heat, especially those without effective cooling or adequate
hydration. Impacts possible in some health system and in
heat-sensitive industries.
* WHERE...All coastal and urban areas, as well as the valleys of the
eastern interior in Puerto Rico, Vieques, Culebra and all of the
Virgin Islands.
* WHEN...From 10 AM this morning to 3 PM AST this afternoon.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
From: Sep 13, 2025 06:43
Until: Sep 13, 2025 19:00
Flood Advisory
* WHAT...Urban and small stream flooding caused by excessive
rainfall is expected.
* WHERE...Northern Bayamon, Catano, Northern Guaynabo, Northern San
Juan and Toa Baja.
* WHEN...Until 415 PM AST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Water over roadways.
* ADDITIONAL DETAILS...
- At 216 PM AST, Doppler radar indicated heavy rain due to
thunderstorms. This will cause urban and small stream
flooding. Up to 1.5 inches of rain have fallen.
- Additional rainfall amounts of 1 to 2 inches are expected
over the area. This additional rain will result in minor
flooding.
- http://www.weather.gov/safety/flood
From: Sep 08, 2025 18:17
Until: Sep 08, 2025 20:15
Flood Advisory
* WHAT...Urban and small stream flooding caused by excessive
rainfall is expected.
* WHERE...Lares, Moca and San Sebastian.
* WHEN...Until 515 PM AST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
* ADDITIONAL DETAILS...
- At 204 PM AST, Doppler radar indicated heavy rain due to
thunderstorms. This will cause urban and small stream
flooding. Between 1 and 2 inches of rain have fallen.
- Additional rainfall amounts up to 1 inch are expected over
the area. This additional rain will result in minor flooding.
From: Sep 07, 2025 18:05
Until: Sep 07, 2025 21:15
Heat Advisory
* WHAT...This level of heat affect most individuals sensitive to
heat, especially those without effective cooling and/or adequate
hydration. Impacts possible in some health system and in
heat-sensitive industries.
* WHERE...Urban and coastal areas of Puerto Rico, as well as the
valleys of the eastern interior, and the U.S. Virgin Islands.
* WHEN...From 10 AM this morning to 4 PM AST this afternoon.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
* ADDITIONAL DETAILS...Although some showers are present in the
region, they are more isolated in nature and mostly confined to
the eastern third of the area. Cloud coverage is also less than
expected across the region, with mostly clear skies over western
Puerto Rico. This will increase heating, and in combination with
well above normal moisture, conditions will become much hotter
during the peak hours of the day, particularly across urban and
coastal areas. However, shower and thunderstorm development in the
afternoon should bring some relief to the heat threat in those
areas.
From: Sep 06, 2025 12:05
Until: Sep 06, 2025 20:00
Heat Advisory
* WHAT...This level of heat affect most individuals sensitive to
heat, especially those without effective cooling and/or adequate
hydration. Impacts possible in some health system and in
heat-sensitive industries.
* WHERE...Portions of Puerto Rico and Virgin Islands.
* WHEN...From 10 AM this morning to 4 PM AST this afternoon.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
From: Sep 05, 2025 07:52
Until: Sep 05, 2025 16:00
Heat Advisory
* WHAT...This level of heat affect most individuals sensitive to
heat, especially those without effective cooling and/or adequate
hydration. Impacts possible in some health system and in
heat-sensitive industries.
* WHERE...Portions of Puerto Rico and Virgin Islands.
* WHEN...From 10 AM this morning to 5 PM AST this afternoon.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
From: Sep 01, 2025 07:44
Until: Sep 03, 2025 21:00
Heat Advisory
* WHAT...This level of heat affect most individuals sensitive to
heat, especially those without effective cooling and/or adequate
hydration. Impacts possible in some health system and in
heat-sensitive industries.
* WHERE...Portions of Puerto Rico and Virgin Islands.
* WHEN...Until 5 PM AST this afternoon.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
From: Sep 02, 2025 14:26
Until: Sep 02, 2025 21:00
Extreme Heat Warning
* WHAT...This level of heat affects anyone without effective cooling
and/or adequate hydration. Impacts likely in some health systems,
heat-sensitive industries and infrastructure.
* WHERE...All coastal and urban areas of Puerto Rico, as well as the
valleys of the eastern interior. St. Thomas, St. John, St. Croix,
Vieques and Culebra.
* WHEN...From 10 AM this morning to 5 PM AST this afternoon.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.
From: Aug 31, 2025 08:55
Until: Aug 31, 2025 21:00
Extreme Heat Warning
* WHAT...This level of heat affects anyone without effective cooling
and/or adequate hydration. Impacts likely in some health systems,
heat-sensitive industries and infrastructure.
* WHERE...Mayaguez and Vicinity, North Central, Northeast,
Northwest, Ponce and Vicinity, San Juan and Vicinity, Southeast,
and Southwest Counties.
* WHEN...Until 5 PM AST this afternoon.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.
From: Aug 30, 2025 13:18
Until: Aug 30, 2025 21:00
Rip Current Statement
* WHAT...Life-threatening rip currents.
* WHERE...Beaches of northern and eastern Puerto Rico.
* WHEN...Through Saturday afternoon.
* IMPACTS...Rip currents can sweep even the best swimmers away
from shore into deeper water, where it becomes difficult to
return to safety.
From: Aug 22, 2025 20:43
Until: Aug 23, 2025 04:45
Rip Current Statement
* WHAT...Life-threatening rip currents.
* WHERE...Rip currents can sweep even the best swimmers away from
shore into deeper water, where it becomes difficult to return
to safety.
* WHEN...Through 6 PM AST this afternoon.
* IMPACTS...Rip currents can sweep even the best swimmers away
from shore into deeper water, where it becomes difficult to
return to safety.
From: Aug 18, 2025 14:15
Until: Aug 18, 2025 22:00
Flood Watch
As Hurricane Erin continues to move away from the islands, remnants
moisture will continue to bring showers and thunderstorms across the
islands. We are expecting 1 to 2 additional inches, with isolated
amounts up to 4 inches possible. Conditions will gradually improve
by tonight.
* WHAT...Flooding caused by excessive rainfall continues to be
possible.
* WHERE...All of Puerto Rico and the Virgin Islands.
* WHEN...Through this evening.
* IMPACTS...Flooding may occur in poor drainage and urban areas.
Low-water crossings may be flooded.
From: Aug 18, 2025 09:02
Until: Aug 18, 2025 20:00
Flood Watch
External rain bands from Hurricane Erin will reach the islands
starting Friday night and stretching into Monday. The rain will
mainly impact portions of northern and eastern Puerto Rico, as well
as the Virgin Islands Friday and Saturday. By Sunday and Monday, the
focus of rain will shift toward the southern coast of Puerto Rico,
while showers and thunderstorms will continue to stream across the
Virgin Islands.
* WHAT...Flooding caused by excessive rainfall continues to be
possible.
* WHERE...All of Puerto Rico and the Virgin Islands.
* WHEN...From midnight AST tonight through Monday evening.
* IMPACTS...Creeks and streams may rise out of their banks.
Low-water crossings may be flooded.
* ADDITIONAL DETAILS...
- Rainfall from Erin will affect the local area through early
next week. The heaviest rain is expected along southern and
eastern Puerto Rico, and the Virgin Islands, with
accumulations ranging from 2 to 4 inches, and isolated
amounts up to 6 inches through the entire period. The
northwestern quadrant of Puerto Rico will receive 1 to 2
inches, and isolated amounts up to 4 inches.
From: Aug 15, 2025 17:37
Until: Aug 16, 2025 10:15
Rip Current Statement
* WHAT...For the High Surf Advisory, large breaking waves of 10 to
14 feet. For the HIGH RIP CURRENT RISK, life-threatening rip
current.
* WHERE... For the HIGH SURF ADVISORY, the most vulnerable areas
for high surf and beach erosion include Pinones along Road 187,
Parcelas Suarez, Villas del Mar, and Villa Christiana in Loiza;
Fortuna in Luquillo; Pueblo and Tamarindo in Aguadilla; Bario
Obrero, Pueblo and Jareaito in Arecibo; Las Boca in Barceloneta;
Machuca in Manati; Puerto Nuevo in Vega Baja; Ocean Park in San
Juan; and Barrio Espinal in Aguada. For the HIGH RIP CURRENT
RISK, beaches of northern and eastern Puerto Rico, Culebra,
Vieques, and all the US Virgin Islands.
* WHEN...For the HIGH SURF ADVISORY, remains from 8 AM Saturday to
6 AM AST Monday. For the High Rip Current Risk remains from
Saturday morning through late Sunday night
* IMPACTS...For the HIGH SURF ADVISORY, High waves that can wash
over jetties and sweep people and pets onto jagged rocks. Rough
surf may also knock you down. Large breaking waves will result
in localized beach/dune structure erosion and dangerous swimming
conditions. For the HIGH RIP CURRENT RISK, rip currents can
sweep even the best swimmers away from shore into deeper water,
where it becomes difficult to return to safety.
From: Aug 15, 2025 21:29
Until: Aug 16, 2025 10:00
High Surf Advisory
* WHAT...For the High Surf Advisory, large breaking waves of 10 to
14 feet. For the HIGH RIP CURRENT RISK, life-threatening rip
current.
* WHERE... For the HIGH SURF ADVISORY, the most vulnerable areas
for high surf and beach erosion include Pinones along Road 187,
Parcelas Suarez, Villas del Mar, and Villa Christiana in Loiza;
Fortuna in Luquillo; Pueblo and Tamarindo in Aguadilla; Bario
Obrero, Pueblo and Jareaito in Arecibo; Las Boca in Barceloneta;
Machuca in Manati; Puerto Nuevo in Vega Baja; Ocean Park in San
Juan; and Barrio Espinal in Aguada. For the HIGH RIP CURRENT
RISK, beaches of northern and eastern Puerto Rico, Culebra,
Vieques, and all the US Virgin Islands.
* WHEN...For the HIGH SURF ADVISORY, remains from 8 AM Saturday to
6 AM AST Monday. For the High Rip Current Risk remains from
Saturday morning through late Sunday night
* IMPACTS...For the HIGH SURF ADVISORY, High waves that can wash
over jetties and sweep people and pets onto jagged rocks. Rough
surf may also knock you down. Large breaking waves will result
in localized beach/dune structure erosion and dangerous swimming
conditions. For the HIGH RIP CURRENT RISK, rip currents can
sweep even the best swimmers away from shore into deeper water,
where it becomes difficult to return to safety.
From: Aug 15, 2025 21:29
Until: Aug 16, 2025 10:00
Heat Advisory
* WHAT...This level of heat affect most individuals sensitive to
heat, especially those without effective cooling and/or adequate
hydration. Impacts possible in some health system and in
heat-sensitive industries.
* WHERE...All coastal and urban areas in Puerto Rico.
* WHEN...From 10 AM this morning to 5 PM AST this afternoon.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
From: Aug 08, 2025 07:07
Until: Aug 08, 2025 15:15
Heat Advisory
* WHAT...This level of heat affect most individuals sensitive to
heat, especially those without effective cooling and/or adequate
hydration. Impacts possible in some health system and in
heat-sensitive industries.
* WHERE...Eastern Interior, Mayaguez and Vicinity, North Central,
Northeast, Northwest, Ponce and Vicinity, San Juan and Vicinity,
Southeast, and Southwest Counties.
* WHEN...Until 5 PM AST this afternoon.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
From: Jul 10, 2025 14:23
Until: Jul 30, 2025 21:00
Heat Advisory
* WHAT...This level of heat affect most individuals sensitive to
heat, especially those without effective cooling and/or adequate
hydration. Impacts possible in some health system and in
heat-sensitive industries.
* WHERE...Eastern Interior, Mayaguez and Vicinity, North Central,
Northeast, Northwest, Ponce and Vicinity, San Juan and Vicinity,
Southeast, and Southwest Counties.
* WHEN...From 10 AM this morning to 5 PM AST this afternoon.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
From: Jul 30, 2025 07:17
Until: Jul 30, 2025 19:30
