A wet pattern peaked Friday, December 22nd, and Saturday, December 23rd, as a front north of Puerto Rico and the USVI, sank southwards over the northeast Caribbean to end the week. Under this pattern, fragments of moisture brought periods of showery weather.
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 wet pattern peaked Friday, December 22nd, and Saturday, December 23rd, as a front north of Puerto Rico and the USVI, sank southwards over the northeast Caribbean to end the week. Under this pattern, fragments of moisture brought periods of showery weather. A mid- to upper-level trough and associated jet maxima provided favorable conditions for shower development. Periods of locally heavy rains caused ponding of water on roads, flooding and hazardous driving conditions. A landslide was also reported.
The San Juan radar (TJUA), 28 km away, was scanning. The volume nearest the first event began at 20:42 UTC.
6 flood, 1 debris flow, 1 flash flood. Local standard time, as filed.
Emergency managers reported some flooding in Road 701 km 1.2. About 2 of rain was reported.
Landslide reported by a 911 employee in Road 690, in Vega Alta, near Vega Baja.
Emergency Management reported 4 people trapped in a car due to flooding, particularly in Expreso Luis Munoz Rivera.
Emergency Management reported a flooded road at the entrance of the Minillas Tunnel going from San Juan to Bayamon. No trapped people reported.
Emergency Management reported a flooded road in Expreso Roman Baldorioty de Castro, Particularly at Exit 1 towards Bayamon.
A 911 employee reported a flooded road, particularly in Calle Colon in San Juan. They reported around 4 feet of water on the road.
A 911 employee reported a flooded road in Avenida Simon Madera, Esquina Calle Alegria, near The Instituto Tecnologico de Puerto Rico in San Juan.
A 911 official reported a flooded road in 65 de Infanteria Ave, near a Burlington Store.
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 2026-10-01. Each event’s entry at NCEI: 1151673, 1151644, 1151674, 1151675, 1151676, 1151678, 1151679, 1151680.