Long-lasting showers and thunderstorms, due to the convergence of the land breeze with northeasterly winds along the Atlantic coastal waters, caused flash flooding across some areas between Vega Alta and Carolina just after midnight on May 3rd, 2022.
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.
Long-lasting showers and thunderstorms, due to the convergence of the land breeze with northeasterly winds along the Atlantic coastal waters, caused flash flooding across some areas between Vega Alta and Carolina just after midnight on May 3rd, 2022.
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 May 2, 9:51 PM AST, 2 hours 54 minutes earlier.
Area Forecast Discussion
National Weather Service San Juan PR
951 PM AST Mon May 2 2022
.UPDATE...A small surge in low-level moisture from the east is
expected to increase shower activity across portions of the USVI
and the eastern half of PR through the overnight hours. In
addition, showers were developing during the past hour along the
northeast to north central sections of PR, mainly due to
convergence of a northeasterly wind flow along the Atlantic
coastal waters with the land breeze. The 03/00z TJSJ sounding
indicated a mean flow from the east to southeast at 15-20 kt, this
should continue to push showers further inland and along coastal
sections where showers develop. Drier air intrusion is expected
later on Tuesday, however, diurnally induced afternoon convection
is expected to develop over the northwestern quadrant of PR.
&&
.AVIATION...Mainly VFR conditions are expected to prevail across
all terminals during the next 24 hours. However, brief MVFR cigs
are possible at TJSJ thru 03/04z due to SHRA. The 03/00z TJSJ
sounding indicated E-ESE winds at 7-23 kt blo FL050.
&&
.MARINE...No change from previous discussion. High risk of rip
currents continues through late Tuesday for most beaches with
northern and eastern exposure of the islands.
&&
.PREV DISCUSSION... /issued 520 PM AST Mon May 2 2022/
SHORT TERM...Tonight through Wednesday...
Although unsettled conditions were present during the day with high
CAPE values, precipitable water of 1.74 inches and favorable
shear environment as observed by the TJSJ 02/12z sounding,
afternoon activity has been fairly mild. The strongest activity
has remained over the offshore Atlantic waters with stratiform
showers over western coastal waters. This was due to extensive
cloud coverage throughout the day preventing surface heating to
promote deep convective activity during the afternoon hours. Dry
air intrusion at mid-levels was also observed during the day
further hindering convective activity. Breezy conditions were
observed with reported maximum wind gusts in the low 40s across
southwestern Puerto Rico, but are expected to diminish tonight.
For this evening, cloudy conditions with some showers affecting
windward coastal areas can be expected this evening through late
tonight.
A gradual improvement of weather conditions is expected on Tuesday
through Wednesday. The upper-level trough will still be present on
Tuesday providing some instability aloft, but its effects will
subside by Wednesday. Moisture content is forecast to slightly
decrease, especially at mid- to upper-levels. Precipitable water
will remain, though, within normal to slightly below normal
through the end of the short-term period. This will cause a
reduction in cloud coverage across the CWA. This should enhance
surface heating and sea breeze convergence during each afternoon,
especially on Tuesday. Although instability will decrease, enough
will still be available for the potential of numerous showers and
isolated thunderstorms mainly over interior and western portions
of Puerto Rico. Localized urban and small stream flooding can be
expected with the heaviest showers.
LONG TERM...THURSDAY THROUGH MONDAY...
PREV DISCUSSION... /issued 447 AM AST Mon May 2 2022/
Model guidance suggests that a mid-to-upper level short-wave
trough will become the dominant feature Thursday into Saturday,
with the associated jet enhancing ventilation across the
northeastern Caribbean and mid-level temperatures dropping as low
as -9 degrees Celsius. However, just below the trough, a weak high
to our east-southeast will maintain a weak trade wind cap,
pronounced southerly flow, and somewhat drier conditions through
the first half of the cycle. Despite these conditions, moisture
levels should remain at seasonal to slightly above seasonal,
ranging from 1.5 on Thursday to around 2.0 inches on Monday
afternoon, with secondary peak moisture of about 1.8 inches on
Saturday evening. At the surface, a high pressure migrating
eastward into the north-central Atlantic will cause winds to veer
from the east-southeast on Thursday, becoming more southeasterly
on Friday into the upcoming weekend while weakening. These
southeasterly winds will also lead to higher daytime temperatures
that could peak around 90 degrees, mainly across northern sections
of the local islands.
The expected shower activity should follow the seasonal pattern
with nocturnal/early morning showers moving inland over windward
areas, followed by afternoon convection across the interior and
western sections. So far, the best chance for shower development
and perhaps an increased risk for localized urban and small stream
flooding falls on Friday and Saturday, when favorable conditions
aloft, local and diurnal effects, abundant tropical moisture, and
a weak steering flow will lead to a higher chance for deep, slow-
moving shower development and a slight chance for isolated
thunderstorm development. Given the expected weak southeasterly
steering flow, the focus of the activity will favor central to
northern sections of the local islands. Increased moisture levels
and favorable conditions may envelop the forecast area again by
early next week as yet another short-wave trough approaches the
region, but confidence in this forecast remains low due to
uncertainties so far out in the cycle.
AVIATION...VFR conds at all terminals durg prd. Isold/wdly SCT
SHRA w/isold TSRA psbl ovr ATL waters N of the islands and ovr
ctrl Mtn range of of PR. VCSH mainly at TJSJ/TIST/TJBQ with SCT-
BKN lyrs nr FL025... FL050 and BKN ocnl OVC nr FL090...FL200 N of
the islands ovr the ATL waters N of the local Islands. SFC wnd fm
E-SE 12-15 kts with ocnl hir gusts, bcmg 10 kts or less aft
02/23Z.
MARINE...Moderate to fresh winds up to 20 knots will maintain
choppy marine conditions, mainly across the Atlantic waters, where
small craft operators should exercise caution. Mariners can expect
seas of 5 feet or below and surface winds up to 15 knots elsewhere
across the local waters. For beachgoers, there is a high risk of
rip currents for beaches across the northwest to the northeast,
and southeast coasts of Puerto Rico and beaches of Vieques,
Culebra, and the U.S. Virgin Islands.
&&
.PRELIMINARY POINT TEMPS/POPS...
SJU 75 85 74 86 / 20 20 20 10
STT 75 86 74 86 / 30 20 10 10
&&
.SJU WATCHES/WARNINGS/ADVISORIES...
PR...High Rip Current Risk through late Tuesday night for Culebra-
North Central-Northeast-Northwest-San Juan and Vicinity.
High Rip Current Risk through Tuesday afternoon for Mayaguez and
Vicinity-Southeast-Vieques.
VI...High Rip Current Risk through late Tuesday night for
St.Thomas...St. John...and Adjacent Islands.
High Rip Current Risk through Tuesday afternoon for St Croix.
AM...None.
&&
SHORT TERM...DSR
LONG TERM....CVB
PUBLIC DESK...MMC/MRRPerspectivas sobre las Condiciones Peligrosas del Tiempo Servicio Nacional de Meteorologia en San Juan PR 506 AM AST lunes 2 de mayo de 2022 AMZ710>745-PRZ001>013-030900- San Juan y Vecindad-Noreste-Sureste-Este Interior-Norte Central Interior Central-Ponce y Vecindad-Noroeste-Oeste Interior-Mayaguez y Vecindad-Suroeste-Culebra-Vieques-Las aguas costeras cercanas y lejanas a la costa del Atlantico y del Caribe- 506 AM AST lunes 2 de mayo de 2022 .Dia Uno...Hoy y esta noche .Tronadas...Existe un potencial de tronadas con lluvia de moderada a fuerte y rafagas en viento esta tarde a traves de sectores del norte de Puerto Rico. .Oleaje...Se espera oleaje picado de hasta 6 pies a traves de las aguas locales. .Corrientes Marinas...Existe un riesgo alto de corrientes marinas para las playas del norte de Puerto Rico, todo Culebra, y el este de Vieques. Existe un riesgo moderado de corrientes marinas para el resto del area. .Dias dos hasta el siete...martes a domingo El riesgo de corrientes marinas se mantendra de moderado a alto a traves de Puerto Rico durante los proximos dias. El oleaje tambien permanecera picado durante los proximos dias. Una vaguada en los niveles altos de la atmosfera pudiera ayudar al desarrollo de aguaceros y tronadas este fin de semana. .Comunicado sobre informacion reportada por observadores... No se espera activacion amplia de observadores. Sin embargo, le agradeceriamos reportar cualquier informacion sobre corrientes marinas al Servicio Nacional de Meteorologia en San Juan. AMZ715-725-VIZ001-002-030900- San Tomas, San John e Islas Adyacentes- Santa Cruz-Aguas cercanas del Atlantico y aguas costeras adyacentes del Caribe- 506 AM AST lunes 2 de mayo de 2022 Esta perspectiva sobre las condiciones peligrosas del tiempo es para Islas Virgenes Estadounidenses y las aguas costeras adyacentes. .Dia Uno...Hoy y esta noche .Oleaje...Se espera oleaje picado de hasta 6 pies a traves de las aguas locales. .Corrientes Marinas...Existe un riesgo alto de corrientes marinas para las playas del norte y oeste de San Thomas, y el este de Santa Cruz. .Dias dos hasta el siete...martes a domingo El riesgo de corrientes marinas se mantendra de moderado a alto a traves de Puerto Rico durante los proximos dias. El oleaje tambien permanecera picado durante los proximos dias. Una vaguada en los niveles altos de la atmosfera pudiera ayudar al desarrollo de aguaceros y tronadas este fin de semana. .Comunicado sobre informacion reportada por observadores... No se espera activacion amplia de observadores. Sin embargo, le agradeceriamos reportar cualquier informacion sobre corrientes marinas al Servicio Nacional de Meteorologia en San Juan.
The San Juan radar (TJUA), 42 km away, was scanning. The volume nearest the first event began at 04:43 UTC.
7 flash flood, 4 flood. Local standard time, as filed.
Road PR-2 was closed in both directions due to flooding from Quebrada Honda.
The 911 call center reported 2 persons trapped in a vehicle due to flash flooding in front of the restaurant Olive Garden next to West Main Avenue.
A person was trapped inside a car due to flash flooding in Ave Kennedy, direction from San Juan towards Guaynabo.
The 911 call center reported 2 persons trapped inside their vehicle due to flash flooding in Ave de Diego.
The 911 call center reported a person trapped in his vehicle due to flooding |in Ave Roosevelt near San Patricio.
The 911 call center reported a vehicle being affected by a flash flood with people trapped inside, on Rd 887 next to Full Power Group.
The 911 call center reported flooding in Ave Kennedy, in front of the Volkswagen and Toyota dealers.
Several roads flooded at Urb. Jardines de Caparra, near a foot and a half of flood waters affected some of the houses and vehicles.
About 200 vehicles were flooded in the Condominiums Valle del Sol and San Francisco.
Several roads flooded, mostly due to poor drainage in the Puente Blanco community.
Several roads flooded, mostly due to poor drainage in the Cucharillas community.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Puerto Rico in 2022Every state in 2022This day in weather historyWarnings in Puerto Rico, May 2022
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: 1031762, 1031763, 1031764, 1031781, 1031765, 1031766, 1031783, 1031767, 1031768, 1031777, 1031779.