Alert archive / Puerto Rico / Special Weather Statements in 2016

Special Weather Statement, NWS JSJ

July 27, 2016

NWS JSJ issued this special weather statement at Jul 27, 2016, 1:28 PM CDT. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 27, 2016, 1:28 PM CDT (18:28 UTC)
Expired: Jul 27, 2016, 2:15 PM CDT
In force: 47 min
Issued by: NWS JSJ

The radar

The San Juan radar (TJUA), 112 km from the middle of the area, began a volume at 18:29 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS JSJ wrote its last area forecast discussion before this special weather statement went out at Jul 27, 1:04 PM CDT, 24 minutes earlier.

Area forecast discussion, Jul 27, 1:04 PM CDT, 24 minutes before

Area Forecast Discussion
National Weather Service San Juan PR
204 PM AST WED JUL 27 2016

.SYNOPSIS...Saharan dust is creating hazy skies across the forecast
area. A TUTT to the northeast of the islands will move westward
and across the forecast area on Thursday. The next tropical wave
is expected to enter the eastern Caribbean on Sunday.

&&

.DISCUSSION...Hazy skies prevailed across the islands Today. This
limited the shower development across much of the forecast area.
However, locally induced showers and two isolated thunderstorms
developed during the last few hours. One briefly developed across
the Toa Baja/Dorado area and the doppler radar estimated between
1-2 inches. The other one developed over western PR, with intense
cloud to ground lightning observed across Mayaguez and Anasco.
Urban and small stream flooding is likely with this activity
during the next hour or so. Fair weather conditions are expected
overnight into early Thursday morning. However, during the
afternoon hours, TUTT will enhance showers and thunderstorms
across the mountain ranges of PR. This will result in periods of
heavy rainfall, gusty winds and cloud to ground lightning. Flash
flooding can't be ruled out due to saturated soils across western
PR.

During the weekend, a somewhat drier air mass is expected on
Saturday ahead of the next tropical wave. However, showers and
isolated thunderstorms can't be ruled out during the afternoon
hours. Moisture increases with the passage of the topical wave on
Sunday through Monday. This unstable environment will once again
enhance the development of scattered to numerous showers across
the regional waters and portions of the islands.

&&

.AVIATION...Mostly VFR conditions with a Saharan air mass,
which could reduce visibilities at the local islands are expected
during the next 24 hours. However, VCSH/ISOLD TSRA are likely at
TJBQ/TJMZ this afternoon thru 21z. Then aft 23z a few VCSH and
brief SHRA are possible over the Leewards, USVI and Eastern PR taf
sites. E-ESE winds will prevail at 10-15 KT. Winds are expected
to diminish at 10 knots or less overnight.

&&

.MARINE...Seas between 3-5 feet are expected through at least
Friday. Increasing between 4-6 feet during the weekend as a
tropical wave. Winds will continue mainly from the east between
10-20 knots.

&&

.PRELIMINARY POINT TEMPS/POPS...
SJU  81  90  80  89 /  40  40  30  30
STT  80  90  79  89 /  40  40  30  30

&&

.SJU Watches/Warnings/Advisories...
PR...None.
VI...None.
AM...None.
&&

27/13

Hazardous weather outlook, Jul 27, 5:08 AM CDT, 8 hours 20 minutes before

PERSPECTIVAS SOBRE CONDICIONES PELIGROSAS DEL TIEMPO
SERVICIO NACIONAL DE METEOROLOGIA SAN JUAN PR
504 AM AST MIERCOLES 27 DE JULIO DE 2016

AMZ710>745-PRZ001>013-280915-
SAN JUAN Y VECINDAD-NORESTE-SURESTE-INTERIOR ESTE-
CENTRAL NORTE-INTERIOR CENTRAL-PONCE Y VECINDAD-NOROESTE-
INTERIOR OESTE-MAYAGUEZ Y VECINDAD-SUROESTE-CULEBRA-VIEQUES-
AGUAS COSTERAS Y MAR AFUERA DEL ATLANTICO Y DEL CARIBE-
504 AM AST MIERCOLES 27 DE JULIO DE 2016

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 PROBABILIDAD DE TRONADAS CON LLUVIA FUERTE Y
RAFAGAS DE VIENTOS ESTA TARDE A TRAVES DEL OESTE Y NOROESTE  DE
PUERTO RICO.

.INUNDACIONES...LLUVIAS FUERTES PUDIERAN RESULTAR EN INUNDACIONES
URBANAS Y RIACHUELOS EN EL OESTE Y NOROESTE DE PUERTO RICO.

.VIENTO...SE ESPERAN VIENTOS SOSTENIDOS EN EXCESO DE 20 MPH (17
NUDOS) A TRAVES DE LAS AGUAS COSTERAS DE PUERTO RICO.

.CORRIENTES SUBMARINAS...EXISTE UN RIESGO MODERADO DE CORRIENTES
SUBMARINAS MAYORMENTE A TRAVES DE LA MAYOR PARTE DE LAS PLAYAS DE
PUERTO RICO INCLUYENDO CULEBRA Y VIEQUES.

.CALOR...INDICE DE CALOR DE 102 GRADOS O MAS ES POSIBLE MAYORMENTE
A TRAVES DE LAS AREAS COSTERAS DE PUERTO RICO Y VIEQUES.

.DIAS DOS HASTA SIETE...JUEVES A MARTES

CONDICIONES INESTABLES PUDIERAN REGRESAR A LAS ISLAS EL JUEVES YA
QUE UNA VAGUADA EN LOS NIVELES ALTOS SE RELOCALIZARA SOBRE LA
REGION. ESTO AUMENTARA LA ACTIVIDAD DE AGUACEROS Y TRONADAS TARDE EN
LA SEMANA. LUEGO...OTRA ONDA TROPICAL DEBE ALCANZAR LA REGION LOCAL
DURANTE EL FIN DE SEMANA. POR LO TANTO...UN PATRON DE TIEMPO HUMEDO
E INESTABLE ES POSIBLE DURANTE LA SEGUNDA PARTE DE LA SEMANA.

.COMUNICADO SOBRE INFORMACION REPORTADA POR OBSERVADORES...

NO SE ANTICIPA ACTIVACION AMPLIA DE OBSERVADORES...SIN EMBARGO...SE
LES EXHORTA A LOS OBSERVADORES INDIVIDUALES A REPORTAR INUNDACIONES
Y CORRIENTES SUBMARINAS AL SERVICIO NACIONAL DE METEOROLOGIA EN SAN
JUAN.

AMZ715-725-VIZ001-002-280915-
SAN TOMAS SAN JOHN E ISLAS ADYACENTES-
SANTA CRUZ-AGUAS CERCA DE LA COSTA DEL ATLANTICO Y AGUAS COSTERAS
ADYACENTES DEL CARIBE-
504 AM AST MIERCOLES 27 DE JULIO DE 2016

ESTA PERSPECTIVA SOBRE LAS CONDICIONES PELIGROSAS DEL TIEMPO ES
PARA LAS ISLAS VIRGENES AMERICANAS Y LAS AGUAS COSTERAS ADYACENTES.

.DIA UNO...HOY Y ESTA NOCHE

.CORRIENTES SUBMARINAS...EXISTE UN RIESGO MODERADO DE CORRIENTES
SUBMARINAS MAYORMENTE A LO LARGO DE LAS COSTAS DEL ESTE...SURESTE Y
NORTE DE SAN THOMAS Y SANTA CRUZ.

.CALOR...INDICES DE CALOR DE 102 GRADOS SON POSIBLES EN LAS
AREAS COSTERAS DE SANTA CRUZ.

.DIAS DOS A SIETE...JUEVES A MARTES

CONDICIONES INESTABLES PUDIERAN REGRESAR A LAS ISLAS EL JUEVES YA
QUE UNA VAGUADA EN LOS NIVELES ALTOS SE RELOCALIZARA SOBRE LA
REGION. ESTO AUMENTARA LA ACTIVIDAD DE AGUACEROS Y TRONADAS TARDE EN
LA SEMANA. LUEGO...OTRA ONDA TROPICAL DEBE ALCANZAR LA REGION LOCAL
DURANTE EL FIN DE SEMANA. POR LO TANTO...UN PATRON DE TIEMPO HUMEDO
E INESTABLE ES POSIBLE DURANTE LA SEGUNDA PARTE DE LA SEMANA.

.COMUNICADO SOBRE INFORMACION REPORTADA POR OBSERVADORES...

NO SE ANTICIPA LA ACTIVACION AMPLIA DE OBSERVADORES. SIN
EMBARGO...SE LES EXHORTA A LOS OBSERVADORES INDIVIDUALES A REPORTAR
CORRIENTES SUBMARINAS AL SERVICIO NACIONAL DE METEOROLOGIA EN SAN
JUAN.

In the hours before

Special weather statement, Jul 27, 1:28 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
228 PM AST WED JUL 27 2016

PRZ009-010-271915-
MAYAGUEZ AND VICINITY-WESTERN INTERIOR-
228 PM AST WED JUL 27 2016

...A STRONG THUNDERSTORM IS AFFECTING SAN SEBASTIAN...ANASCO...LAS
MARIAS...MAYAGUEZ AND MOCA MUNICIPALITIES...

AT 225 PM AST...A STRONG THUNDERSTORM WAS LOCATED OVER ANASCO. THE
STORM IS NEARLY STATIONARY. WIND GUSTS OF OVER 35 MPH ARE POSSIBLE
WITH THIS THUNDERSTORM. TORRENTIAL RAINFALL IS ALSO OCCURRING WITH
THIS STORM...AND MAY CAUSE LOCALIZED FLOODING.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

AN URBAN AND SMALL STREAM FLOOD ADVISORY IS IN EFFECT FOR THE AREA.
PLEASE MONITOR LOCAL MEDIA OUTLETS AND THE NATIONAL WEATHER SERVICE
FOR FURTHER STATEMENTS.

LAT...LON 1824 6700 1823 6717 1824 6717 1826 6719
      1828 6719 1829 6721 1830 6721 1831 6703
TIME...MOT...LOC 1825Z 000DEG 0KT 1828 6712

JJA

The office that day

Everything else NWS JSJ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 27, 12:57 PM CDT	Areal Flood Advisory	JSJ		3 hr
Jul 27, 1:57 PM CDT	Areal Flood Advisory	JSJ		3 hr

Nearby

Special Weather Statements in Puerto Rico, 2016 Every special weather statement in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.