National Weather Service Today's Weather Impact Levels

Graphical Hazardous Weather Outlook

 

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T'STORMS THREAT

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National Weather Service Forecast for: San Juan PR
Issued by: National Weather Service San Juan, PR
Updated: 4:00 am AST May 22, 2019

San Juan
 
Today

Today: Scattered showers, mainly after noon.  Mostly sunny, with a high near 90. East wind 9 to 14 mph.  Chance of precipitation is 40%.
Scattered
Showers

Tonight

Tonight: Scattered showers.  Partly cloudy, with a low around 76. East wind 5 to 9 mph.  Chance of precipitation is 40%.
Scattered
Showers

Thursday

Thursday: Scattered showers, with thunderstorms also possible after noon.  Partly sunny, with a high near 89. East wind 7 to 11 mph.  Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Scattered
Showers

Thursday
Night
Thursday Night: Scattered showers, mainly after midnight.  Partly cloudy, with a low around 76. East southeast wind 6 to 10 mph.  Chance of precipitation is 40%.
Isolated
Showers then
Scattered
Showers
Friday

Friday: Scattered showers.  Mostly sunny, with a high near 90. East wind 10 to 15 mph.  Chance of precipitation is 40%.
Scattered
Showers

Friday
Night
Friday Night: Scattered showers.  Partly cloudy, with a low around 76. East southeast wind 8 to 10 mph.  Chance of precipitation is 40%.
Scattered
Showers

Saturday

Saturday: Mostly sunny, with a high near 90. East wind 11 to 16 mph.
Mostly Sunny

Saturday
Night
Saturday Night: Scattered showers.  Mostly cloudy, with a low around 76. East wind 8 to 11 mph.  Chance of precipitation is 40%.
Scattered
Showers

Sunday

Sunday: Showers likely, mainly after noon.  Partly sunny, with a high near 89. East wind around 11 mph.  Chance of precipitation is 60%.
Mostly Sunny
then Showers
Likely
Hi 90 °F Lo 76 °F Hi 89 °F Lo 76 °F Hi 90 °F Lo 76 °F Hi 90 °F Lo 76 °F Hi 89 °F

Hazardous Weather Outlook
 

Today
 
Scattered showers, mainly after noon. Mostly sunny, with a high near 90. East wind 9 to 14 mph. Chance of precipitation is 40%.
Tonight
 
Scattered showers. Partly cloudy, with a low around 76. East wind 5 to 9 mph. Chance of precipitation is 40%.
Thursday
 
Scattered showers, with thunderstorms also possible after noon. Partly sunny, with a high near 89. East wind 7 to 11 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
 
Scattered showers, mainly after midnight. Partly cloudy, with a low around 76. East southeast wind 6 to 10 mph. Chance of precipitation is 40%.
Friday
 
Scattered showers. Mostly sunny, with a high near 90. East wind 10 to 15 mph. Chance of precipitation is 40%.
Friday Night
 
Scattered showers. Partly cloudy, with a low around 76. East southeast wind 8 to 10 mph. Chance of precipitation is 40%.
Saturday
 
Mostly sunny, with a high near 90. East wind 11 to 16 mph.
Saturday Night
 
Scattered showers. Mostly cloudy, with a low around 76. East wind 8 to 11 mph. Chance of precipitation is 40%.
Sunday
 
Showers likely, mainly after noon. Partly sunny, with a high near 89. East wind around 11 mph. Chance of precipitation is 60%.
Sunday Night
 
Scattered showers. Partly cloudy, with a low around 76. Chance of precipitation is 30%.
Memorial Day
 
Showers likely. The rain could be heavy at times. Mostly cloudy, with a high near 88. Chance of precipitation is 60%.
Monday Night
 
Scattered showers. Mostly cloudy, with a low around 76. Chance of precipitation is 40%.
Tuesday
 
Showers likely. Mostly cloudy, with a high near 90. Chance of precipitation is 60%.

 

 

 

Weather Summary

000
AWCA82 TJSJ 220817
RWSPR

Weather Summary for Puerto Rico
National Weather Service San Juan PR
417 AM AST Wed May 22 2019

Mostly clear skies in the west and partly cloudy skies in the
east prevailed during the overnight and early morning hours.
Radar Doppler detected showers streaming over the waters with a
few of them moving inland over portions of southeastern Puerto
Rico. Significant rainfall accumulations were not reported with
this activity. Overnight low temperatures dropped into the mid to
upper 70s across coastal areas and into the mid to upper 60s in
high elevations. Winds were light and variable.

Showers will continue to move from the waters into portions of
southern and eastern Puerto Rico through the morning hours, moving
further inland as the day progresses. Then, shower activity
accompanied by isolated thunderstorms is expected to shift and
cluster across portions of the interior and western Puerto Rico in
the afternoon. Showers moving over the San Juan metropolitan
area cannot be ruled out. Favorable upper level conditions and
plenty of tropical moisture will support the development of deep
afternoon convection, resulting in rainfall accumulations up to an
inch and a half with isolated higher amounts. As a result, there
is an increasing potential for urban and small stream flooding,
particularly across the northwestern quadrant of the island.
Daytime high temperatures are forecast to peak in the upper 80s to
low 90s across coastal areas under an east-southeast surface wind
flow between 10-15 mph and higher gusts.

Across the regional waters and local passages, seas are expected
to remain at 4 feet or below. East to southeast winds will
continue between 10 to 15 knots. There is a moderate risk of rip
currents for the north facing beaches of Puerto Rico.

$$

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.

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