Regional Weather Summary
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AWCA82 TJSJ 232146

Weather Summary for Puerto Rico
National Weather Service San Juan PR
546 PM AST Mon Apr 23 2018

An upper level jet brought high cloudiness to Puerto Rico today.
Underneath showers formed and developed into thunderstorms during
the afternoon from the moisture already in place, the approach of
an upper level trough and a low level perturbation leaving the
area toward the west. Since around midnight Maricao has seen 1.40
inches of rain, Lake Vivi near Utuado recorded just over one half
inch, Orocovis saw 0.7 inches. An unofficial report from Puerto
Nuevo had 2.47 inches and streets around The San Patricio Mall
were reported flooded with route 2 down to only one lane where
traffic could pass. Meanwhile, just a few miles away, the airport
in San Juan saw only five hundredths of an inch. Rain was falling
in Cabo Rojo at this writing and amounts were approaching one inch
there. Temperatures ranged from the upper 80s in the foothills of
the south coast to the mid 70s in the higher mountain valleys.
San Juan saw a high of 84 degrees. Winds were 10 to 20 mph, with
the lightest winds in the interior. Winds gusted up to 27 mph in
San Juan.

Moisture will begin to decrease overnight tonight, after residual
showers generated during the day have finally dissipated. Expect
showers to continue into the evening with a slight chance of a
thunderstorm. Some of this activity will also reform in the
Atlantic waters northwest of the island. Temperatures tonight will
range from the mid 60s to the upper 70s. Skies will continue to be
mostly cloudy. Tomorrow we expect another round of showers and
thunderstorms, with the best chances in the western half of the
island. Winds will be 10 to 20 mph from the east with good sea
breeze influences. Temperatures will range from almost 90 degrees
on the south coast to the mid 70s in the higher mountains.

Across the coastal waters...seas will subside from 5 to 7 feet
across the offshore waters tonight to only 3 and 5 feet by
Wednesday. Elsewhere tonight, small craft in exposed waters will
need to exercise caution--mainly for winds of 15 to 20 knots.
Winds and seas will continue to diminish through Thursday. Rip
current risks in Puerto Rico will be moderate except around the
southwest coasts and just south of Ceiba.


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