The moisture field of a tropical wave that was approaching the islands from the southeast and a low-level jet promoted wet and unstable conditions. Before midday, activity intensified and cloudiness increased resulting in an active day with multiple flood advisories and flash flood warnings due to a strong severe thunderstorm that|moved into the southeast bringing periods of heavy rain and wind…
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.
The moisture field of a tropical wave that was approaching the islands from the southeast and a low-level jet promoted wet and unstable conditions. Before midday, activity intensified and cloudiness increased resulting in an active day with multiple flood advisories and flash flood warnings due to a strong severe thunderstorm that|moved into the southeast bringing periods of heavy rain and wind gusts. In Guayama and Yabucoa, wind gusts of 50 and 48 mph respectively were recorded. Municipalities of the eastern and southeastern quadrants of Puerto Rico received the greatest accumulations from 3 to 5.5 inches.
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 Jun 2, 5:00 AM AST, 6 hours 15 minutes earlier.
Area Forecast Discussion
National Weather Service San Juan PR
500 AM AST Sun Jun 2 2024
.SYNOPSIS...
A mixture of hazy skies along with an increase in moisture is
expected today. We anticipate the typical afternoon across
western Puerto Rico. Wet and unstable conditions are expected
early next week due to an approaching tropical wave. Improving
conditions are foreseen from next Friday onwards.
&&
.SHORT TERM...Today through Tuesday...
As a tropical wave approaches the islands from the southeast and a
broad surface trough develops west of the region, we can expect a
gradual increase in moisture content for the rest of the short-term
period. According to the latest model guidance, the precipitable
water content will rise to above-normal levels, approximately 2.20
to 2.50 inches, by late today into Monday due to the synoptic
scenario and a moist southeast wind flow. This will heighten the
risk of flooding rains across most of the forecast area, potentially
leading to flooding in urban areas, roads, and small streams, as
well as isolated flash floods in the upcoming week. It is advisable
for residents and visitors to avoid activities near small streams
and waterfalls due to the risk of sudden water rises in the area's
rivers. Thunderstorms today could produce frequent cloud to ground
lightning.
Additionally, a weak Saharan Air Layer remains over the area,
leading to a combination of haze and increasing humidity. This
weather pattern will contribute to warm to hot temperatures, and
heat indices are expected to reach heat advisory criteria along the
southern, western, and northern coastal and urban areas of Puerto
Rico and St. Croix. Therefore, a Heat Advisory (NPWSJU) is in effect
for these areas.
&&
.LONG TERM...Wednesday through Sunday...
Most recent model guidance suggests Precipitable Water(PW) values
ranging from the 75th percentile (above normal values) to above
the 2-standard deviation for this time of the year as lingering
moisture from a departing tropical wave continues to promote
showers and thunderstorm activity across Puerto Rico and the U.S.
Virgin Islands. We forecast the thunderstorm activity to be
stronger over western PR, particularly by the afternoon hours.
However, the stronger or more convective part of the tropical wave
will remain well to the south of the islands. The persistent mid-
to upper-level trough across the northwestern Caribbean will
favor periods of heavy rainfall and thunderstorms near the
forecast area, particularly over the Hispaniola, and potentially
reach some areas of western Puerto Rico through mid-week. At this
time, models suggest Wednesday as the most unstable day of the
long-term period. Therefore, the risk of flooding rains will stay
elevated across all the islands.
As this pattern unfolds, a deep layered ridge will build and hold
just east of the Leeward Islands. The interactions of these
weather features will promote divergence aloft and south-to-
southwesterly wind flow at the surface. That being said, we
foresee warm to hot conditions across the islands. However, it
will depend on how much cloud cover and rainfall materialize over
the islands.
A drying trend is still expected by the end of the workweek into the
weekend as a broad surface ridge becomes the dominant weather
feature.
&&
.AVIATION...
(06z TAFs)
A tropical wave will likely bring VCSH/VCTS across the local area
today. Therefore, areas of MVFR conds and mtn tops obscd can be
expected as the day progresses. Winds will prevail from the east to
southeast at 10-15 kts with higher gusts and sea breeze variations.
&&
.MARINE...
Moderate to fresh easterly winds will prevail today. The rest of the
week expect a dominant southerly to southeasterly component. A
wetter pattern is anticipated from today through at least mid-week
as a tropical wave approaches the region from the southeast
increasing moisture, seas, and winds.
&&
.BEACH FORECAST...
A moderate risk is expected across most of the beaches in Puerto
Rico and the U.S. Virgin Islands. While, a low risk is anticipated
for western and south central Puerto Rico. The risk of rip
currents is expected to remain between low and moderate through at
least midweek, then return to low by the end of next week.
&&
.SJU WATCHES/WARNINGS/ADVISORIES...
PR...Heat Advisory from 10 AM this morning to 5 PM AST this afternoon
for PRZ001-003-005-007-008-010-011.
VI...Heat Advisory from 10 AM this morning to 5 PM AST this afternoon
for VIZ002.
AM...None.
&&
SHORT TERM/AVIATION...DS
LONG TERM/MARINE/BEACH FORECAST...MMCPerspectiva sobre las Condiciones Peligrosas del Tiempo Servicio Nacional de Meteorología San Juan PR 456 AM AST domingo 2 de junio de 2024 AMZ711>745-PRZ001>013-030900- 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- 456 AM AST domingo 2 de junio de 2024 Esta perspectiva sobre las condiciones peligrosas del tiempo es para sectores de Puerto Rico. .DÍA UNO...Hoy y esta noche .Rayos...Las tormentas eléctricas aisladas son posibles a través de las islas. Esté atento a las tormentas eléctricas en su área y esté preparado para buscar refugio. .Lluvia Excesiva...Inundaciones en áreas urbanas, carreteras, riachuelos y lavados. Inundaciones repentinas aisladas posibles. .Calor Excesivo...Este nivel de calor afecta a la mayoría de los individuos sensibles al calor, especialmente aquellos sin enfriamiento efectivo y/o hidratación adecuada. Impactos posibles en algunos sistemas de salud y en industrias sensibles al calor. .Viento...Condiciones de brisa. Los artículos no asegurados podrían salir volando. .Condiciones Marítimas...Las embarcaciones pequeñas deben ejercer precaución a través de la mayoría de las aguas locales. .Corrientes Marinas...Corrientes marinas amenazantes a la vida son posibles en la zona de olas particularmente a través de todas las playas de Puerto Rico, Vieques y Culebra. .DÍAS DOS A SIETE...lunes a sábado Se espera que una onda tropical aumente la humedad y el potencial de inundaciones urbanas y de riachuelos hasta el lunes. Se pronostica un patrón meteorológico húmedo e inestable hasta mediados de la semana a medida que una vaguada amplia se desarrolle al oeste del área y humedad tropical abundante se mueva sobre la región bajo vientos del sur. .COMUNICADO SOBRE INFORMACIÓN DE 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 Meteorología en San Juan. AMZ716-726-VIZ001-002-030900- San Thomas San John e islas adyacentes-Santa Cruz- Aguas cercanas a la costa del Atlántico y aguas costeras adyacentes del Caribe- 456 AM AST domingo 2 de junio de 2024 Esta Perspectiva sobre las Condiciones Peligrosas del Tiempo es para sectores de las Islas Vírgenes Americanas. .DÍA UNO...Hoy y esta noche .Rayos...Tormentas eléctricas aisladas posibles a través de las aguas entre las Islas Vírgenes Estadounidenses y sobre las islas a veces. Esté atento a las tormentas eléctricas en su área y esté preparado para buscar refugio. .Lluvia Excesiva...Inundaciones en áreas urbanas, carreteras, riachuelos y lavados. .Calor Excesivo...Este nivel de calor afecta a la mayoría de los individuos sensibles al calor, especialmente aquellos sin enfriamiento efectivo y/o hidratación adecuada. Impactos posibles en algunos sistemas de salud y en industrias sensibles al calor. .Viento...Condiciones de brisa. Los artículos no asegurados podrían salir volando. .Condiciones Marítimas...Las embarcaciones pequeñas deben ejercer precaución a través de la mayoría de las aguas locales. .Corrientes Marinas...Las corrientes marinas amenazantes a la vida son posibles en la zona de olas particularmente a través de la mayoría de las playas de Santa Cruz. .DÍAS DOS A SIETE...lunes a sábado Se espera que una onda tropical aumente la humedad y el potencial de inundaciones urbanas y de riachuelos hasta el lunes. Se pronostica un patrón meteorológico húmedo e inestable hasta mediados de la semana a medida que una vaguada amplia se desarrolle al oeste del área y humedad tropical abundante se mueva sobre la región bajo vientos del sur. .COMUNICADO SOBRE INFORMACIÓN DE 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 Meteorología en San Juan.
The San Juan radar (TJUA), 45 km away, was scanning. The volume nearest the first event began at 15:14 UTC.
10 flash flood, 2 thunderstorm wind, 2 flood. Local standard time, as filed.
The 911 Call center reported that a woman was trapped inside a car by CLL D, Costa Dorado, close to the Airbnb Villa Atlantico.
Emergency managers reported flood waters from Rio Blanco affecting roads PR-31 and PR-191. Both roads were impassable. A USGS river gauge upstream reported a max height of around 8.5 feet.
Emergency managers reported at least four people were rescued from four different cars due to flood waters from Rio Blanco on roads PR-31 and PR-191. Both roads were impassable.
Flood waters from poor drainage along road PR-54 near the intersection with Calle Principal Sur next to Hospital Episcopal San Lucas had a few lanes impassable.
Mesonet station XMRS Las Mareas reported a wind gust of 50 mph.
Emergency managers reported several flooded houses. Emergency managers were in the process of evacuating several people in both sectors Herradura and Las 20 in Ba. Guayabota.
Mesonet station XYAB Yabucoa-El Negro reported a wind gust of 44 mph.
Emergency managers reported that the river was out of its banks along PR-759 in sector Gorona. The flood waters affected several neighborhoods, such as Tumbao, Palo Seco, Matuyas, and Lizas.
The 911 Call center reported of a person trapped inside a car by Gautier Benitez Ave, in front of Centro Piezas Plus.
The 911 Call center reported a flooded residential home. One person was trapped inside. This residential home was located by C2 CLL Julian Rivera, Villa Ana Juncos.
The 911 Call Center reported a flooded residential home Cll 14, close to Bio Nova Home llc.
The 911 Call Center reported PR-184 in Ba. Jagual completely flooded. A total of 15 people are said to be trapped. Close to this area passes Rio Grande de Patillas. Upstream the USGS river sensor had the highest observation of 14.76 ft at 2:35 PM AST.
Emergency managers reported that they would close PR-951 as Rio Grande de Loiza was about to be out of its banks just by Puente Encarnacion in PR-8874. At 355 PM AST, the USGS river sensor of Rio Canovanas near Campo Rico, which merges in Rio Grande de Loiza at that location, reported a 10.88 ft water level.
A 911 reporter informed us that Road #3 in BO. Limones towards Calabaza, near El Goni, has been affected by flooding.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Puerto Rico in 2024Every state in 2024This day in weather historyWarnings in Puerto Rico, June 2024
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: 1196368, 1196385, 1196386, 1196387, 1196366, 1196388, 1196367, 1196389, 1196369, 1196370, 1196371, 1196390, 1196364, 1196365.