Flash Flood Warning 89, NWS JSJ

178 
WGCA72 TJSJ 142217
FFSSJU

Flash Flood Statement
National Weather Service San Juan PR
617 PM AST Wed Aug 14 2024

PRC007-061-127-142227-
/O.EXP.TJSJ.FF.W.0089.000000T0000Z-240814T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Aguas Buenas PR-Guaynabo PR-San Juan PR-
617 PM AST Wed Aug 14 2024

...FLASH FLOOD WARNING HAS EXPIRED FOR AGUAS BUENAS, GUAYNABO AND 
SAN JUAN COUNTIES...

The heavy rain has ended. Please continue to heed remaining road 
closures.

A Flash Flood Watch remains in effect until 800 AM AST Thursday for 
portions of Puerto Rico and the US Virgin Islands.

&&

LAT...LON 1838 6612 1842 6613 1847 6605 1847 6604
      1844 6602 1844 6604 1840 6599 1837 6603
      1830 6605 1830 6606 1826 6608 1821 6613
      1821 6615 1823 6615 1822 6616 1823 6617
      1826 6619 1828 6617 1828 6614 1838 6613

$$

DS

Area Forecast Discussion
National Weather Service San Juan PR
402 PM AST Wed Aug 14 2024

.SYNOPSIS...At 2 PM AST Tropical Storm Ernesto was 225 miles
northwest of San Juan and moving northwest at 16 mph. The tail of
Ernesto is pulling across western Puerto Rico and our western
Atlantic waters with scattered showers elsewhere. Some
thunderstorms linger. Conditions will improve but southerly flow
will cause excessive heat into the weekend. Moisture will return
to normal or slightly above normal levels beginning on Friday.

&&

.SHORT TERM...Tonight through Friday...

Tropical storm Ernesto will continue to be the dominant influence
on the weather through Thursday. The tail of Ernesto will pull
across western Puerto Rico and the local western Atlantic waters
this evening, but the GFS shows moisture retreating with the storm
to the north northwest except for isolated convection later
tonight and Thursday. Moisture at 850 mb drops off rapidly tonight
and at higher levels on Thursday. Considerable drying will be
seen on Friday up through 300 mb. As the convergence into TS
Ernesto moves with the storm to the northwest, a ridge from the
surface to 700 mb will move in over the area to reinforce drying
and subsidence. This will also greatly decrease the amount of
rainfall expected Thursday and Friday. At upper levels a very weak
ridge of high pressure will develop over and just north of the
area between TS Ernesto and another low pressure currently
negatively tilted over 52 west longitude to our east.

.LONG TERM...Saturday through Thursday...

A surface high ridging over the area and the northeastern
Caribbean on Saturday will shift northwest into the Bahama Islands
by Monday from a quasi stationary high over the Azores. An
easterly wave near 35 west on Saturday will move toward the area
to about 55 west on Tuesday. At this time it is not carrying a
significant amount of additional moisture and will travel well
south of Puerto Rico. Better moisture will move into the area
behind a weaker wave closely following that will bring showers to
the area. Since precipitable water values will continue during the
long-term period in the range of 1.4 to 2.0 inches and flow will
be mostly southeast over the weekend and turning more easterly
during the week, a more typical weather patter will prevail for
Puerto Rico and the U.S. Virgin Islands with bands of better
moisture even if excessive heat persists early in the period.
This will mean early morning showers in eastern Puerto Rico
followed by afternoon showers and thunderstorms in western and
interior parts of the island. For the U.S. Virgin Islands only
isolated to scattered showers are expected with limited amounts of
rainfall occurring. Some lines of convection are likely during
this period extending with the flow to the west northwest or west
of Culebra, Vieques and the U.S. Virgin Islands.

&&

.AVIATION...

(18z)

IFR/MVFR conditions are forecast to prevail across TJBQ until at
least 14/21z as the rainbands from Hurricane Ernesto move out. For
the rest of the PR TAF sites, mainly VFR conds, at times MVFR, will
prevail with brief SHRA/TSRA and low CIG thru 14/22z, while USVI TAF
sites can expect mostly VFR conds with VCSH.  Mostly VFR conds for
all TAF sites aft 15/00Z. Winds will remain mainly from the S-SE up
to 15 knots and gusty winds up to 28 kts, a more SE wind flow is
forecast at around 15/03Z.

&&

.MARINE...Hazardous seas will slowly retreat with TS Ernesto and
small craft advisories are not expected after Thursday at 6 PM
AST through Thursday of next week. Nevertheless subsiding swell
from TS Ernesto will continue to arrive in the local area now
through Tuesday. Showers and thunderstorms will continue--
especially in the northern waters--through Thursday also with
diminishing frequency.

&&

.BEACH FORECAST...Rip current risk will remain moderate to high
over all beaches tonight and moderate on Thursday. Due to the
swell returning from TS Ernesto, which is forecast to become a
hurricane in the next 24 hours, the rip current risk over the
weekend will remain moderate on some northern beaches on Friday.

&&

.HYDROLOGY...Many rivers across Puerto Rico are in flood stage and
some in western Puerto Rico will rise further. The Flash Flood
watch has been extended through 8 AM AST. All rivers, if they
have not done so by now, should crest soon or overnight.

&&

.SJU WATCHES/WARNINGS/ADVISORIES...
PR...Coastal Flood Advisory until 6 PM AST this evening for
     PRZ001>003-012-013.

     Flood Watch through Thursday morning for PRZ001>013.

     High Rip Current Risk through late tonight for PRZ001>003-005-
     008-010-012-013.

     High Surf Advisory until 6 PM AST this evening for PRZ001>003-
     005-008-012-013.

VI...Coastal Flood Advisory until 6 PM AST this evening for VIZ001-
     002.

     Flood Watch through Thursday morning for VIZ001-002.

     High Rip Current Risk through late tonight for VIZ001-002.

     High Surf Advisory until 6 PM AST this evening for VIZ001-002.

AM...Tropical Storm Warning for AMZ711.

     Small Craft Advisory until 8 AM AST Thursday for AMZ711.

     Small Craft Advisory until 8 AM AST Thursday for AMZ712-716-723-
     726-733-735-741-742-745.

&&

SHORT TERM/MARINE...WS
LONG TERM....WS
AVIATION...CVB
TROPICAL...OM
PUBLIC...ERG/DS/RVT/MMC
UPPER AIR...RVT/GRS

Preliminary Local Storm Report
National Weather Service San Juan PR
206 PM AST Wed Aug 14 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0930 AM     Flash Flood      1 ESE Yauco             18.03N 66.84W
08/14/2024                   Yauco              PR   Emergency Mngr

            Emergency managers reported PR-335
            impassable by Planta de Tratamiento de Yauco
            due to Berrenchin Creek out of its banks.

&&

CVB

Preliminary Local Storm Report
National Weather Service San Juan PR
215 PM AST Wed Aug 14 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0130 PM     Flash Flood      1 NNE Rio Lajas         18.41N 66.26W
08/14/2024                   Dorado             PR   Broadcast Media

            Broadcast media through tv news reported
            Puente Virgencita in PR-2 completely flooded
            making PR-2 impassable. This was due to
            waters from Rio La Plata over topping the
            bridge.

&&

CVB

Preliminary Local Storm Report
National Weather Service San Juan PR
321 PM AST Wed Aug 14 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0300 PM     Flash Flood      3 NW Barahona           18.38N 66.48W
08/14/2024                   Manati             PR   Emergency Mngr

            The emergency manager reported that road
            6685 in Manati near K-feina Coffee Shop is
            closed due to the river being out of its
            bank.

&&

MMC

Preliminary Local Storm Report
National Weather Service San Juan PR
327 PM AST Wed Aug 14 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1159 AM     Tropical Cyclone 1 N Campo Rico          18.35N 65.90W
08/14/2024                   Canovanas          PR   911 Call Center

            911 Call Center reported a fallen tree at
            PR-185 obstructing the road. The report also
            said that electrical post was down.

&&

CVB

Preliminary Local Storm Report
National Weather Service San Juan PR
332 PM AST Wed Aug 14 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0300 PM     Flash Flood      1 W Manati              18.43N 66.50W
08/14/2024                   Manati             PR   Emergency Mngr

            The emergency manager reported that Sector
            California (a residential area near PR-2) is
            being affected by flooding, and the river is
            out of its bank. Currently, families are
            being rescued from their houses.

&&

MMC

Preliminary Local Storm Report
National Weather Service San Juan PR
338 PM AST Wed Aug 14 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0144 PM     Flash Flood      2 WSW Capitanejo        18.01N 66.56W
08/14/2024                   Ponce              PR   911 Call Center

            911 Call Center reported that a person was
            holding into a post due to flash flooding in
            PR-1, by Tiendita Holsum.

&&

CVB