Graphical Hazardous Weather Outlook







AWCA82 TJSJ 150913 CCA

Weather Summary for Puerto Rico
National Weather Service San Juan PR
440 AM AST Mon Aug 15 2022

A tropical wave, the axis of which is now over eastern Puerto Rico,
brought brief passing showers to the local waters and eastern Puerto
Rico from time to time. Rain amounts over land since midnight were
generally less than fifteen hundredths of an inch. Winds were light
and less than 7 mph in land breezes. Overnight low temperatures
ranged from the mid 60s in the highest mountain valleys to the upper
70s on the windward coasts. Overnight lows were in the lower 80s on
Culebra. As of 4:30 AM AST no lighting was observed in the forecast

Better moisture is behind the wave and will spread across the
islands during the day. Showers will become more frequent across
eastern Puerto Rico during the morning hours then showers and
thunderstorms will pass through the entire island and grow stronger
in western Puerto Rico. Rainfall amounts of up to 2 inches in the
heavier showers and thunderstorms are possible, with isolated spots
of 4 inches possible. Winds will become south east to south with
some sea breeze influences and up to 15 mph with stronger gusts in
sea breezes and near thunderstorms. Due to higher relative
humidities we expect hot weather again today. A heat advisory has
been put into place from 10 AM to 4 PM AST today for most of the
lower elevations of Puerto Rico for heat indices of 102 to 111
degrees, with the highest heat indices on the north coast and just
inland. Actual high temperatures will vary from the lower 90s in the
lower elevations to the upper 70s in the highest mountains. A drying
trend will begin tonight, but excessive heat will continue through
the week.

Except for locally hazardous marine conditions generated by the
shower and thunderstorm activity across the local waters, seas will
remain less than 4 feet and winds generally less than 15 knots. Most
north, east and southeast-facing beaches have a moderate risk of rip


This product is issued around 5 AM and 5 PM each day and weather
conditions may change between issuances. Please verify the status
of any Watches...Warnings or Advisories mentioned in this product.

NWS SJU Office Area Forecast Discussion



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