Flash Flood Warning 2, NWS JSJ

055 
WGCA72 TJSJ 300007
FFSSJU

Flash Flood Statement
National Weather Service San Juan PR
807 PM AST WED MAR 29 2017

PRC043-300016-
/O.EXP.TJSJ.FF.W.0002.000000T0000Z-170330T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Coamo PR-
807 PM AST WED MAR 29 2017

...THE FLASH FLOOD WARNING FOR COAMO MUNICIPALITY WILL EXPIRE AT 815
PM AST...

Flood waters have receded. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.

LAT...LON 1802 6634 1804 6636 1804 6643 1815 6642
      1817 6643 1817 6642 1816 6640 1817 6637
      1817 6633 1813 6632 1808 6626 1805 6630
      1803 6631 1802 6633

$$

13

Area Forecast Discussion...CORRECTED
National Weather Service San Juan PR
410 PM AST Wed Mar 29 2017

.SYNOPSIS...Shower and thunder development still possible across
the eastern interior and southern slopes through the early evening
hours. A generally fair weather pattern will prevail Thu and
Fri with some locally induced afternoon showers across west and
southwest Puerto Rico. Moisture advection is expected the upcoming
weekend.

&&

.SHORT TERM...Tonight through Sat Morning...
Shower and thunder development still possible through the early
evening hours across the eastern interior and southern slopes of
Puerto Rico. With the heaviest showers ponding of water on
roadways and in low lying areas is expected with some rises along
small stream and rivers.

As a surface low across the north central Atlantic moves east
northeast, a surface high will build north of the area. Therefore
low level winds are expected to become more east northeast Friday
and east to east southeast late Saturday and into Sunday. At upper
levels, a mid level ridge will build from the west and hold much of
the upcoming week. Precipitable water will continue to erode under
the prevailing northerly winds. As the low level winds becomes
easterly to east southeast the upcoming weekend, moisture is
expected to advect once again across the forecast area. Therefore,
tonight through Friday mainly fair weather conditions are expected
to prevail with a few locally induced showers across the west and
southwest Puerto Rico. As the moisture increases the upcoming
weekend, the chance for showers will increase, although under a
building ridge there will be hostile environment for thunderstorm
development. As a result, expect passing showers across the USVI and
E PR Saturday morning with showers developing over and west of the
Cordillera Saturday afternoon.

.LONG TERM...Sat thru Wed/issued 353 AM AST Wed Mar 29 2017/
A weak surface high pressure is expected to develop across the
central Atlantic early in the weekend to maintain an easterly
trade wind flow across the local islands Saturday and Sunday. At
the same time a surface low emerging across the northeastern
United States seaboard will push the surface high eastward while
weakening. As this happens patches of moisture associated with a
frontal remnants will combine with local effects both days to
produce an increase in cloudiness and shower activity across
Puerto Rico and the U.S. Virgin Islands during the weekend, but at
this time not widespread or significant precipitation is expected
during this period.

As the aforementioned surface low and associated frontal boundary
moves northeastward toward the north central Atlantic, another
stronger surface high is expected to develop and drift across the
western Atlantic. This feature will bring an east northeast trade
wind flow across the forecast area late Monday through at least
Wednesday. An upper level ridge is expected to build and
strengthening over the northeast Caribbean during the weekend and
is expected to persist over the region through at least Wednesday.
This feature will inhibit the development of widespread or deep
convection across the local islands during the forecast period,
but moisture embedded in the trades will continue to combine with
local effects to produce some shower activity across western and
interior Puerto Rico each day.

&&

.AVIATION...Mostly VFR conds expected to prevail at all TAF sites
through the forecast period. VCTS expected at JPS/JSJ through
29/22z. Light northerly winds tonight and overnight becoming more
easterly by tomorrow.

&&

.MARINE...Tranquil marine weather conditions will persist tonight
with seas below 5 feet and northerly winds at less than 15 knots.
A northerly swell is expected to reach the islands by Thursday.
Therefore the risk of rip currents is expected to increase along
the north facing beaches of PR and the USVI.

&&

.PRELIMINARY POINT TEMPS/POPS...
SJU  75  84  74  84 /  30  30  20  20
STT  74  85  73  85 /  30  30  20  20

&&

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

SHORT TERM...OMS
AVIATION...CAM

Perspectivas sobre condiciones peligrosas del tiempo
Servicio Nacional de Meteorologia San Juan PR
1251 PM AST miercoles 29 de marzo de 2017

AMZ710>745-PRZ001>013-300500-
San Juan y Vecindad-Noreste-Sureste-Este Interior-
Norte Central-Interior Central-Ponce y Vecindad-Noroeste-
Oeste Interior-Mayaguez y Vecindad-Suroeste-Culebra-Vieques-
Aguas cercanas y aguas mar afuera del Atlantico y aguas costeras
del Caribe-
1251 PM AST miercoles 29 de marzo de 2017

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

.Dia uno...Hoy y esta noche

.Tronadas...Existe una posibilidad de tronadas con lluvias fuertes
y breves vientos en rafagas esta tarde a lo largo y al sur de la
Cordillera Central.

.Inundaciones...Lluvias fuertes pudieran resultar en acumulacion de
agua en las carreteras y en areas de pobre drenaje, al igual que
inundaciones urbanas y de riachuelos pequenos mayormente a traves
del interior este.

.Corrientes submarinas...Existe un riesgo moderado de corrientes
marinas a traves de la mayoria de las playas locales.

.Dias dos a siete...jueves a martes

Un riesgo moderado de corrientes submarinas continuara prevaleciendo
a traves de la mayoria de las playas loacales durante los proximos
dias.

.Comunicado sobre informacion reportada por observadores...

No se anticipa activacion amplia de observadores, sin embargo se les
exhorta a observadores a reportar corrientes submarians e
inundaciones al Servicio Nacional de Meteorologia en San Juan.

AMZ715-725-VIZ001-002-300500-
San Tomas, San John e islas adyacentes-
Santa Cruz-Aguas cercanas del Atlantico y aguas costeras adyacentes
del Caribe-
1251 PM AST miercoles 29 de marzo de 2017

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

.Dia uno...Hoy y esta noche

.Corrientes submarinas...Existe un riesgo bajo de corrientes
submarinas a traves de las playas locales de todas las islas.

.Dias dos a siete...jueves a martes

Un riesgo moderado de corrientes submarinas se espera a traves de
algunas areas durante los proximos dias.

.Comunicado sobre informacion reportada por observadores...

No se anticipa activacion amplia de observadores, sin embargo se les
exhorta a observadores a reportar corrientes submarians al Servicio
Nacional de Meteorologia en San Juan.