A Wind Advisory was in effect for PR and the USVI from Tuesday afternoon to Thursday morning. This was due to the interaction of a surface high-pressure north of the area and a strong low-pressure system northeast of the Caribbean resulting in windy conditions over the local area.
Every event with a place to put it. Tap one for its entry below.
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.
The episode as NWS SJU wrote it up.
A Wind Advisory was in effect for PR and the USVI from Tuesday afternoon to Thursday morning. This was due to the interaction of a surface high-pressure north of the area and a strong low-pressure system northeast of the Caribbean resulting in windy conditions over the local area. Sustained winds at 20 to 30 mph with frequent gusts around 35 to 45 mph were forecast.
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 Dec 13, 4:30 PM AST, 1 hour 30 minutes earlier.
Area Forecast Discussion
National Weather Service San Juan PR
430 PM AST Wed Dec 13 2023
.SYNOPSIS...
Once again, the interaction of a surface high-pressure north of
the area and a strong low-pressure system northeast of the
Caribbean will continue to promote fresh to strong trade winds
with locally higher gusts over the local area through at least
Friday. Therefore, a Wind Advisory remains in effect until
Thursday with winds continue to peak during the rest of today.
Sustained winds at 20 to 30 mph with frequent gusts around 35 to 45
mph are expected. By the end of the workweek, a frontal boundary
will linger to the north of the area and early in the weekend
another high pressure system will position over the western Atlantic.
&&
.SHORT TERM...Tonight through Friday...
Breezy to windy easterly winds continued to strengthen across the
region and brought an increase of passing showers this morning and
afternoon. No heavy rain has been observed, yet frequent showers
have provided almost an inch across a few sections of eastern PR.
Temperature wise, they stayed in the 80s along the coastal areas,
while across the interior and mountainous areas they ranged between
the 70s to low 80s.
The rest of today, seems to be the window with the strongest winds
as a broad surface ridge interacts with a low to it's south and
really tightens the pressure gradient across the western central
Atlantic. Therefore, winds are foreseen to remain windy to very
windy in localized areas through at least Thursday. Tonight a wind
advisory remains in place for all of the local islands as sustained
winds of 20 to 30 mph with frequent gusts around 35 to 45 mph are
possible. Impacts can be but are not limited to outdoor unsecured
objects blowing around or becoming damaged. Equipment operators may
experience safety risk with high baskets or ladder extensions. Wind
speeds will still be quite strong at times over the next few days as
similar conditions prevail. However, from Thursday into the end of
the workweek, we forecast a gradual decrease in wind speeds.
By Friday, we forecast an increase of precipitable water values as
moist air from the south begins to rise into the northeastern
Caribbean. This will bring a further increase of passing showers,
being frequent at times, especially across eastern sections. There
may be areas that could experience ponding of water at times with
consecutive showers. Throughout this short-term period the marine
and coastal conditions remain the greatest hazard. For that reason,
we urge people to exercise caution when spending time around or out
on the ocean.
&&
.LONG TERM...Saturday through Wednesday...FROM previous
discussion...
The synoptic features influencing the long-term forecast have
remained relatively consistent, with the main alteration being the
timing of their effects. Above-normal moisture levels are expected
to persist on Saturday but are anticipated to decrease by Sunday,
remaining at near-normal levels. Ridging aloft will keep 500 mb
temperatures relatively warmer than the climatological normal with
250 mb height fields higher than usual. Consequently, the
atmospheric dynamics do not appear conducive for deep convective
development. However, despite this, there will be enough moisture
for shallow convective activity, leading to showery weather reaching
windward coastal sections during late evenings and morning hours,
especially on Saturday. Breezy wind conditions will continue, but
they are anticipated to be considerably less pronounced compared to
the short-term forecast.
The remainder of the long-term forecast will depend on a
strengthening area of low pressure that models continue to develop
over the south to southeast Gulf of Mexico. According to model
guidance, this robust low-pressure system is expected to move across
Florida by the upcoming weekend and then progress northward over the
western Atlantic. As this occurs, an elongated frontal boundary
associated with the low-pressure system is projected to envelop
the local area by early next week, with Tuesday anticipated to be
the wettest day in the long-term forecast.
This scenario will lead to southerly winds drawing abundant columnar
moisture, fostering increased moisture convergence across the
northeastern Caribbean. Additionally, atmospheric conditions aloft
appear to become conducive for deep convection. However, it's
crucial to note that the timing and positioning of these features
remain subject to change with varying models and each subsequent
model cycle, which have not been consistent in the last day or so.
Despite this inconsistency, there is an indication that the latter
portion of the long-term forecast, which corresponds to mid-week of
next week, will transition towards a more unsettled and wet
weather pattern.
&&
.AVIATION... Mostly VFR conditions will persist for most
of the TAF sites. However, brief SHRA might lower the ceiling over
east-located sites (TJSJ, TISX, TIST & TJPS). Windy conditions will
persist with winds from the E- NE at 20-25 knots and higher gusty
winds from 25 to 35 knot. -RA to SHRA will persist for most of the
eastern sites for most o the period.
&&
.MARINE...Winds are expected to increase throughout the rest of
today, and seas will become rough around 12 feet and occasionally
higher across Atlantic offshore waters. East to east- northeast
winds will also increase up to 25 knots with gusts up to 45 knots.
Therefore, Small Craft Advisories are in effect through at least
Sunday. Please refer to the latest Marine Weather Message (MWWSJU)
for more information.
&&
.BEACH...Nearshore Atlantic buoys are around 8-10 feet.
Nonetheless, they will continue to increase gradually as winds
continue peak and conditions remain windy to very windy (25-30
mph) with occasional gust up to 45 mph. Therefore, a Wind Advisory,
a High Surf Advisory, and multiple High Rip Current Risk are in
effect. Please refer to the latest Coastal Hazard Message (CFWSJU)
for more information.
&&
.SJU WATCHES/WARNINGS/ADVISORIES...
PR...High Rip Current Risk through Sunday morning for Prz005-002-005-
008-010-012.
High Surf Advisory until 6 AM AST Thursday for Prz005-002-005-
008-012.
Wind Advisory until 9 AM AST Thursday for Prz005>013.
High Rip Current Risk through Thursday afternoon for Prz005.
High Rip Current Risk through Friday afternoon for Pros.
VI...High Rip Current Risk through Sunday morning for VIZ001-002.
High Surf Advisory until 6 AM AST Thursday for VIZ001.
Wind Advisory until 9 AM AST Thursday for VIZ001-002.
AM...Small Craft Advisory until 8 PM AST Sunday for AMZ711-712-716-
723-741.
Small Craft Advisory until 2 PM AST Friday for AMZ726-742.
Small Craft Advisory until 6 PM AST Saturday for AMZ733.
Small Craft Advisory until 8 AM AST Thursday for AMZ735.
Small Craft Advisory until 6 AM AST Thursday for AMZ745.
&&
SHORT TERM...RC/MMC
LONG TERM....MMC
AVIATION...LIS
MARINE...MMC
BEACH...MMCPerspectiva sobre las Condiciones Peligrosas del Tiempo Servicio Nacional de Meteorologia San Juan PR 455 AM AST miércoles 13 de diciembre de 2023 AMZ711>745-PRZ001>013-140900- San Juan y Vecindad-Noreste-Sureste-Este Interior- Norte Central-Central Interior-Ponce y Vecindad-Noroeste- Oeste Interior-Mayagüez y Vecindad-Suroeste-Culebra-Vieques- Las aguas cercanas y fuera de la costa del Atlántico y del Caribe- 455 AM AST miércoles 13 de diciembre de 2023 Esta perspectiva sobre las condiciones peligrosas del tiempo es para sectores de Puerto Rico. .DÍA UNO...Hoy y esta noche .Lluvia Excesiva...Acumulación de agua en carreteras y áreas mal drenadas a través del norte y este de Puerto Rico, Culebra y Vieques. .Viento...Condiciones ventosas. Los artículos al aire libre podrían salir volando o dañarse. .Condiciones Marítimas...Oleaje igual o mayor de 10 pies a través de todas las aguas del Atlántico y pasajes locales. Condiciones peligrosas para embarcaciones pequeñas. En otros lugares Oleaje igual a o mayor de 7 pies. Condiciones peligrosas para embarcaciones pequeñas. . Corrientes Marinas...Las corrientes marinas amenazantes a la vida son probables a través de las playas locales. . DÍAS DOS A SIETE...jueves a martes Los vientos alisios muy ventosos continuarán al menos hasta el jueves. Esto resultará en un tiempo lluvioso a lo largo de las secciones del norte y este de las islas, y se moverá aún más tierra adentro, especialmente mañana y el jueves. Por lo tanto, el estanque de agua en las carreteras y en áreas de drenaje pobre será posible. Las condiciones de brisa a ventosas serán probablemente a lo largo de la semana, y cualquier objeto pequeño suelto o no asegurado podría volarse o dañarse. Las condiciones marinas y costeras permanecerán peligrosas debido a las condiciones esperadas de vientos frescos a fuertes. .COMUNICADO SOBRE INFORMACIÓN REPORTADA POR OBSERVADORES... Se les exhorta a los observadores a reportar. Favor de reportar cualquier información sobre inundaciones, vientos, olas y corrientes marinas al Servicio Nacional de Meteorologia en San Juan. AMZ716-726-VIZ001-002-140900- San Thomas San John e islas adyacentes-Santa Cruz- Aguas cercanas a la costa del Atlántico y aguas costeras adyacentes del Caribe- 455 AM AST miércoles 13 de diciembre de 2023 Esta Perspectiva sobre las Condiciones Peligrosas del Tiempo es para sectores de las Islas Vírgenes Americanas. .DÍA UNO...Hoy y esta noche .Viento...Condiciones ventosas. Los artículos al aire libre podrían salir volando o dañarse. .Condiciones Marítimas...Oleaje igual o mayor de 10 pies a través de todas las aguas del Atlántico y pasajes locales. Condiciones peligrosas para embarcaciones pequeñas. En otros lugares Oleaje igual a o mayor de 7 pies. Condiciones peligrosas para embarcaciones pequeñas. .Corrientes Marinas...Las corrientes marinas amenazantes a la vida son probables a través de las playas locales. .DÍAS DOS A SIETE...jueves a martes Los vientos alisios muy ventosos continuarán al menos hasta el jueves. Esto resultará en un tiempo lluvioso a lo largo de las secciones del norte y este de las islas, y se moverá aún más tierra adentro, especialmente mañana y el jueves. Por lo tanto, el estanque de agua en las carreteras y en áreas de drenaje pobre será posible. Las condiciones de brisa a ventosas serán probablemente a lo largo de la semana, y cualquier objeto pequeño suelto o no asegurado podría volarse o dañarse. Las condiciones marinas y costeras permanecerán peligrosas debido a las condiciones esperadas de vientos frescos a fuertes. .COMUNICADO SOBRE INFORMACIÓN REPORTADA POR OBSERVADORES... Se les exhorta a los observadores a reportar. Favor de reportar cualquier información sobre inundaciones, vientos, olas y corrientes marinas al Servicio Nacional de Meteorologia en San Juan.
The San Juan radar (TJUA), 58 km away, was scanning. The volume nearest the first event began at 21:58 UTC.
1 thunderstorm wind. Local standard time, as filed.
Based on a local weather broadcasters social media page, we received a report on a fallen tree due to windy trades at Pajonal Neighborhood in the Florida municipality.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Puerto Rico in 2023Every state in 2023This day in weather historyWarnings in Puerto Rico, December 2023
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: 1151385.