Forecast and Conditions for Guaynabo, Puerto Rico

Updated: 4:40 AM AST on November 09, 2009
Observed at Reparto Metropolitano, San Juan, Puerto Rico
Temperature 76.1 °F
Humidity 93%
Dew Point 74 °F
Wind NNE at 0.0 mph
Pressure 29.85 in (Steady)
Conditions Light Thunderstorms and Rain
Visibility 6.0 miles
Clouds Scattered Clouds (SCT) : 1500 ft
Scattered Clouds (SCT) : 3900 ft
Mostly Cloudy (BKN) : 4700 ft
Yesterday's Maximum 87 °F
Yesterday's Minimum 77 °F
Normal high 86 °F
Normal low 74 °F
Record high 91 °F (1997)
Record low 71 °F (1965)
Yesterday's Heating Degree Days 0
Yesterday's Cooling Degree Days 17
Sunrise06:27 AM (AST)
Sunset05:48 PM (AST)
Moon RiseNo Moon Rise
Moon Set12:44 PM (AST)
Moon Phase
High Surf Advisory
Statement as of 10:20 PM AST on November 8, 2009


... High surf advisory remains in effect from 2 am AST Monday to 4
PM AST Wednesday...

The National Weather Service in San Juan has issued a high surf
advisory... which is will be in effect from 2 am AST Monday to 4
PM AST Wednesday.

Moderate to long period northerly swell will begin to invade and
affect the north coast of Puerto Rico... Culebra... Vieques... and
the U.S. Virgin Islands early Monday morning and continue through
at least Wednesday. The swell will begin to produce breakers of
10 feet or more beginning Monday. This swell event will peak on
Tuesday... then slowly subside thereafter through Wednesday.

Precautionary/preparedness actions...

For the Atlantic waters along the north facing beaches

These long period swells will produce large breaking waves of 10 to
15 feet along the local reefs... beaches and Shoals of the local
islands Monday through Wednesday. Therefore... a high surf advisory
has been issued.

These breaking waves will generate strong and dangerous currents
within the surf zone... called rip currents. These narrow outward
flowing currents can carry people and animals away from the coast
line and out to sea. If you become caught in a rip current... do not
panic. Calmly... remain afloat... gather your bearings relative to the
beach... and swim parallel to the beach. You will eventually leave
the grip of this narrow current... and be able to safely swim to
shore.

Local beach goers... and inexperienced surfers and swimmers are urged
to stay out of the water until these hazardous surf conditions
subside. Persons on the beach should be vigilant for large breaking
waves surging upon the shore... which can carry people of all sizes
into the ocean. You should avoid being near the shore line and stay
off of rock formations.

These surging waves will also create the potential for beach erosion
during times of high tide.

The times of the high tide for the following locations are:

San Juan harbor:1.1 feet at 1:29 am AST Monday morning... and 1.9 feet
at 2:43 PM on Monday afternoon.

Magens Bay St thomas:1.7 feet at 3:09 PM AST on Monday afternoon.

Christiansted St croix: 1.0 feet at 1:06 PM AST on Monday afternoon.

Stay tuned for any additional statements or possible watches or
warnings from your National Weather Service forecast office in San
Juan.

This product... along with other weather... hydrological and climate
information... is available on the web at http://www.Srh.NOAA.Gov/sju
or at http://weather.Gov.





Forecast as of 3:35 am AST on November 9, 2009

Now
Isolated to moderate to heavy showers and isolated thunderstorms will be affecting the northern coast municipalities from Fajardo westward to Aguadilla for much of the morning hours. Also...the municipalities of Culebra and Vieques will be affected by moderate to heavy showers and thunderstorms for same time frame. Some of the showers and thunderstorms are capable to produce minor flooding along roadways and underpasses and poor drainage areas.
Forecast as of 4:17 am AST on November 9, 2009

High surf advisory in effect until 4 PM AST Wednesday...
Today
Cloudy. Widespread showers and isolated thunderstorms in the morning...then numerous showers and isolated thunderstorms in the afternoon. Locally heavy rainfall possible in the morning. Highs 86 lower elevations ranging to 73 higher elevations. Northeast winds 10 to 15 mph. Chance of rain 80 percent.
Tonight
Mostly cloudy with numerous showers and isolated thunderstorms. Lows 79 lower elevations ranging to 65 higher elevations. Northeast winds 5 to 15 mph. Chance of rain 60 percent.
Tuesday
Mostly cloudy with scattered showers. Highs 86 lower elevations ranging to 73 higher elevations. Northeast winds 5 to 15 mph. Chance of rain 50 percent.
Tuesday Night
Variably cloudy with isolated showers. Lows 79 lower elevations ranging to 63 higher elevations. East winds up to 10 mph. Chance of rain 20 percent.
Veterans Day
Mostly cloudy. Isolated showers in the morning... then scattered showers in the afternoon. Highs 86 lower elevations ranging to 73 higher elevations. Southeast winds up to 10 mph. Chance of rain 40 percent.
Wednesday Night
Mostly cloudy in the evening then becoming variably cloudy. Scattered showers. Lows 79 lower elevations ranging to 63 higher elevations. Chance of rain 40 percent.
Thursday
Partly cloudy with isolated showers in the morning... then mostly cloudy with scattered showers and isolated thunderstorms in the afternoon. Highs 88 lower elevations ranging to 74 higher elevations. Chance of rain 50 percent.
Thursday Night
Mostly cloudy with scattered showers. Lows 79 lower elevations ranging to 64 higher elevations. Chance of rain 40 percent.
Friday
Mostly cloudy with scattered showers in the morning...then variably cloudy with scattered showers and isolated thunderstorms in the afternoon. Highs 88 lower elevations ranging to 75 higher elevations. Chance of rain 50 percent.
Friday Night
Variably cloudy with scattered showers and isolated thunderstorms. Lows 79 lower elevations ranging to 65 higher elevations. Chance of rain 50 percent.
Saturday
Variably cloudy. Scattered showers and isolated thunderstorms in the morning...then scattered showers in the afternoon. Highs 87 lower elevations ranging to 74 higher elevations. Chance of rain 50 percent.
Saturday Night
Partly cloudy with isolated showers. Lows 79 lower elevations ranging to 64 higher elevations. Chance of rain 20 percent.
Sunday
Partly cloudy with isolated showers. Highs 88 lower elevations ranging to 75 higher elevations. Chance of rain 20 percent.
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