AWCA82 TJSJ 210911
Weather Summary for Puerto Rico
National Weather Service San Juan PR
511 AM AST Mon Sep 21 2020
Skies were mostly clear overnight. Barely any shower activity was
detected overland. Lows overnight ranged from the mid 70s across
coastal areas to the low and mid 60s across mountains and valleys.
Warm to hot temperatures will prevail today with little or no
rain through the morning hours. Heat indices will reach the low
and mid 100s. Under a southerly wind flow, local effects will
result in afternoon convection across and northeast of the
Cordillera Central. Winds will be 6 to 12 mph mostly in sea
breezes. Highs will range from the mid 90s in some interior
locations to the lower 80s in the higher mountains.
A northerly swell will slowly fade across the Atlantic Ocean
today. These swell will produce breaking waves between 5 and 8
feet, therefore a high risk of rip currents will continue from the
northeast to northwest beaches of Puerto Rico and Culebra. Seas
will decrease and small craft advisories will expire this
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