Today is forecast to be nearly the same temperature as yesterday.
Nowcast 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 for San Juan and Vicinity
Updated: 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.
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.
... 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.