Guaynabo, PR

5:35 AM AST on February 13, 2012 (GMT -0400)
Elev: 161 ft
Lon: 66.1° W
Lat: 18.4° N
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Active Advisory: High Surf Advisory, Coastal Flood Watch (US Severe Weather)
Tropical Weather: Tropical Cyclone Giovanna (South Indian Ocean) Tropical Cyclone Jasmine (Southern Pacific)
Weather Summary
Jessica Parker
Weather Underground Forecast for Monday, February 13, 2012.

The trough of low pressure that brought unsettled weather to the West on Sunday will advance into the Plains on Monday with more mixed precipitation. The trough will support a low and associated warm front moving eastward into the Southern Plains. As the system progresses, rain showers with periods of heavy rain and isolated thunderstorms will spread from parts of central/eastern Texas into western Louisiana, mixed precipitation will develop in parts of Oklahoma and Arkansas, and snow will blanket parts of the Central Plains, Mid-Mississippi Valley, and parts of the western Ohio Valley. Areas from eastern Texas through Arkansas should expect the heaviest precipitation totals. Heightened winter weather conditions will allow Winter Weather Advisories and a few Winter Storm Warnings to remain in effect through the day. Elsewhere east of the Continental Divide, lake-effect snow showers will continue along parts of the Lower Great Lakes Snowbelt.

In the West, a Pacific cold front pushing across the Pacific Northwest will drop southward across northern California, bringing coastal and valley rain and significant snowfall to the Sierra Nevadas.
Weather Underground Forecast for Monday, February 13, 2012.

The trough of low pressure that brought unsettled weather to the West on Sunday will advance into the Plains on Monday with more mixed precipitation. The trough will support a low and associated warm front moving eastward into the Southern Plains. As the system progresses, rain showers with periods of heavy rain and isolated thunderstorms will spread from parts of central/eastern Texas into western Louisiana, mixed precipitation will develop in parts of Oklahoma and Arkansas, and snow will blanket parts of the Central Plains, Mid-Mississippi Valley, and parts of the western Ohio Valley. Areas from eastern Texas through Arkansas should expect the heaviest precipitation totals. Heightened winter weather conditions will allow Winter Weather Advisories and a few Winter Storm Warnings to remain in effect through the day. Elsewhere east of the Continental Divide, lake-effect snow showers will continue along parts of the Lower Great Lakes Snowbelt.

In the West, a Pacific cold front pushing across the Pacific Northwest will drop southward across northern California, bringing coastal and valley rain and significant snowfall to the Sierra Nevadas.
Weather Underground Broadcast Network
Guaynabo Weather at a Glance
Updated 5:00 AM AST
Elevation
0 ft
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Now
Partly Cloudy
Partly Cloudy
Temperature
72 °F
Feels Like 72 °F
Wind(mph)
4
Sunrise / Set
6:53 AM
6:24 PM
Moon
Waning Gibbous
Today
Clear 81 °F
Clear
Tonight
Rain Showers 67 °F
Rain Showers
20% chance of precipitation
Tomorrow
Rain Showers 83 | 67 °F
Rain Showers
20% chance of precipitation
Wednesday
Rain Showers 81 | 67 °F
Rain Showers
20% chance of precipitation
Thursday
Clear 81 | 67 °F
Clear
Friday
Rain Showers 81 | 67 °F
Rain Showers
30% chance of precipitation
Today is forecast to be Cooler than yesterday.
Conditions
Pressure
29.93 in
Visibility
10.0 miles
Clouds
Few 2500 ft
Moisture
Humidity
Rainfall
-
Not available.
Snow Depth
Not available.
METAR
METAR TJSJ 130856Z 00000KT 10SM FEW025 22/19 A2994 RMK AO2 SLP138 T02220189 55010
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Weather Radio
Weather Radio Index
Temperature
Temperature
72 °F
Wind
Speed / Dir
4 mph from South
Wind Gust
4.0 mph
Health
UV
0 out of 16
Pollen
Not available.
Air Quality
Not available.
Flu Activity
Sporadic
View Flu Map
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Regional Forecast for San Juan and Vicinity
Today
partlycloudy Partly cloudy with isolated showers. Highs 87 lower elevations ranging to 72 higher elevations. Southeast winds up to 5 mph shifting to the northeast in the afternoon. Chance of rain 20 percent.
Tonight
nt_partlycloudy Partly cloudy with isolated showers. Lows 72 lower elevations ranging to 63 higher elevations. East winds up to 10 mph. Chance of rain 20 percent.
Tuesday
chancerain Partly cloudy with isolated showers until late afternoon...then variably cloudy with scattered showers late in the afternoon. Highs 86 lower elevations ranging to 72 higher elevations. East winds 5 to 15 mph. Chance of rain 30 percent.
Tuesday Night
nt_chancerain Variably cloudy with scattered showers early in the evening...then partly cloudy with isolated showers in the late evening and overnight. Lows 73 lower elevations ranging to 65 higher elevations. East winds up to 10 mph. Chance of rain 30 percent.
Wednesday
partlycloudy Partly cloudy with isolated showers. Highs 86 lower elevations ranging to 72 higher elevations. East winds 5 to 15 mph. Chance of rain 20 percent.
Wednesday Night
nt_partlycloudy Partly cloudy with isolated showers. Lows 73 lower elevations ranging to 64 higher elevations. Chance of rain 20 percent.
Thursday
partlycloudy Partly cloudy with isolated showers. Highs 86 lower elevations ranging to 71 higher elevations. Chance of rain 20 percent.
Thursday Night
nt_chancerain Variably cloudy. Isolated showers in the evening... then scattered showers after midnight. Lows 72 lower elevations ranging to 63 higher elevations. Chance of rain 30 percent.
Friday
chancerain Variably cloudy with scattered showers in the morning... then partly cloudy with isolated showers in the afternoon. Highs 86 lower elevations ranging to 71 higher elevations. Chance of rain 30 percent.
Friday Night
nt_partlycloudy Partly cloudy with isolated showers. Lows 73 lower elevations ranging to 64 higher elevations. Chance of rain 20 percent.
Saturday
partlycloudy Partly cloudy with isolated showers. Highs 86 lower elevations ranging to 72 higher elevations. Chance of rain 20 percent.
Saturday Night
nt_partlycloudy Partly cloudy with isolated showers. Lows 72 lower elevations ranging to 63 higher elevations. Chance of rain less than 20 percent.
Sunday
partlycloudy Partly cloudy with isolated showers. Highs 85 lower elevations ranging to 72 higher elevations. Chance of rain less than 20 percent.
Source: NWS at 3:55 am AST on February 13, 2012
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Nowcast
High surf advisory in effect from 6 PM this evening to 6 am AST Wednesday...
Coastal Flood Watch in effect from this evening through Tuesday afternoon...
Forecast
View Calendar 7-Day Weather Forecast for 00965
Monday, 13
Clear
81 | 67 °F
Clear
Chance of
Precipitation
0%
Tuesday, 14
Rain Showers
83 | 67 °F
Rain Showers
Chance of
Precipitation
20%
Wednesday, 15
Rain Showers
81 | 67 °F
Rain Showers
Chance of
Precipitation
20%
Thursday, 16
Clear
81 | 67 °F
Clear
Chance of
Precipitation
10%
Friday, 17
Rain Showers
81 | 67 °F
Rain Showers
Chance of
Precipitation
30%
Saturday, 18
Clear
81 | 67 °F
Clear
Chance of
Precipitation
10%
Sunday, 19
Clear
81 | NA
Clear
Chance of
Precipitation
10%
Source: NWS at 3:55 am AST on February 13, 2012
Regional Forecast for San Juan and Vicinity
Today
partlycloudy Partly cloudy with isolated showers. Highs 87 lower elevations ranging to 72 higher elevations. Southeast winds up to 5 mph shifting to the northeast in the afternoon. Chance of rain 20 percent.
Tonight
nt_partlycloudy Partly cloudy with isolated showers. Lows 72 lower elevations ranging to 63 higher elevations. East winds up to 10 mph. Chance of rain 20 percent.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 67 | 66 81 | 66 75 | 65 69 | 65
Wind 1 mph ENE 5 mph ENE 6 mph NE 6 mph ENE
Humidity 93% 63% 72% 87%
Chance of Precip. 0% 0% 0% 20%
Cloud Cover 18% 0% 0% 0%
Conditions Clear Clear Clear Rain Showers
Sunrise & Sunset
6:53 AM
6:24 PM
Source: NWS at 3:55 am AST on February 13, 2012
Regional Forecast for San Juan and Vicinity
Tuesday
chancerain Partly cloudy with isolated showers until late afternoon...then variably cloudy with scattered showers late in the afternoon. Highs 86 lower elevations ranging to 72 higher elevations. East winds 5 to 15 mph. Chance of rain 30 percent.
Tuesday Night
nt_chancerain Variably cloudy with scattered showers early in the evening...then partly cloudy with isolated showers in the late evening and overnight. Lows 73 lower elevations ranging to 65 higher elevations. East winds up to 10 mph. Chance of rain 30 percent.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 69 | 67 81 | 66 75 | 65 69 | 67
Wind 6 mph ENE 6 mph ENE 7 mph ENE 6 mph East
Humidity 92% 61% 71% 94%
Chance of Precip. 20% 20% 20% 20%
Cloud Cover 0% 0% 0% 0%
Conditions Rain Showers Rain Showers Rain Showers Rain Showers
Sunrise & Sunset
6:52 AM
6:24 PM
Source: NWS at 3:55 am AST on February 13, 2012
Regional Forecast for San Juan and Vicinity
Wednesday
partlycloudy Partly cloudy with isolated showers. Highs 86 lower elevations ranging to 72 higher elevations. East winds 5 to 15 mph. Chance of rain 20 percent.
Wednesday Night
nt_partlycloudy Partly cloudy with isolated showers. Lows 73 lower elevations ranging to 64 higher elevations. Chance of rain 20 percent.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 69 | 67 81 | 68 75 | 68 69 | 68
Wind 6 mph East 7 mph East 7 mph ENE 6 mph ENE
Humidity 91% 66% 80% 94%
Chance of Precip. 20% 20% 20% 20%
Cloud Cover 0% 0% 0% 0%
Conditions Rain Showers Rain Showers Rain Showers Rain Showers
Sunrise & Sunset
6:52 AM
6:25 PM
Source: NWS at 3:55 am AST on February 13, 2012
Regional Forecast for San Juan and Vicinity
Thursday
partlycloudy Partly cloudy with isolated showers. Highs 86 lower elevations ranging to 71 higher elevations. Chance of rain 20 percent.
Thursday Night
nt_chancerain Variably cloudy. Isolated showers in the evening... then scattered showers after midnight. Lows 72 lower elevations ranging to 63 higher elevations. Chance of rain 30 percent.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 69 | 67 79 | 67 75 | 67 69 | 67
Wind 6 mph ENE 7 mph ENE 7 mph ENE 6 mph ENE
Humidity -6638% 64% 78% 91%
Chance of Precip. 20% 20% 20% 20%
Cloud Cover 0% 0% 0% 0%
Conditions Rain Showers Rain Showers Rain Showers Rain Showers
Sunrise & Sunset
6:51 AM
6:25 PM
Source: NWS at 3:55 am AST on February 13, 2012
Regional Forecast for San Juan and Vicinity
Friday
chancerain Variably cloudy with scattered showers in the morning... then partly cloudy with isolated showers in the afternoon. Highs 86 lower elevations ranging to 71 higher elevations. Chance of rain 30 percent.
Friday Night
nt_partlycloudy Partly cloudy with isolated showers. Lows 73 lower elevations ranging to 64 higher elevations. Chance of rain 20 percent.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 72 | 67 77 | 67 74 | 67 69 | 67
Wind 6 mph East 7 mph ENE 6 mph East 5 mph East
Humidity 83% 69% 77% 90%
Chance of Precip. 30% 30% 30% 30%
Cloud Cover 0% 0% 0% 0%
Conditions Rain Showers Rain Showers Rain Showers Rain Showers
Sunrise & Sunset
6:51 AM
6:25 PM
Source: NWS at 3:55 am AST on February 13, 2012
Regional Forecast for San Juan and Vicinity
Saturday
partlycloudy Partly cloudy with isolated showers. Highs 86 lower elevations ranging to 72 higher elevations. Chance of rain 20 percent.
Saturday Night
nt_partlycloudy Partly cloudy with isolated showers. Lows 72 lower elevations ranging to 63 higher elevations. Chance of rain less than 20 percent.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 72 | 67 79 | 67 75 | 67 69 | 67
Wind 5 mph East 6 mph East 5 mph East 5 mph East
Humidity 85% 68% 77% 92%
Chance of Precip. 10% 10% 10% 10%
Cloud Cover 0% 0% 0% 0%
Conditions Rain Showers Rain Showers Rain Showers Rain Showers
Sunrise & Sunset
6:51 AM
6:25 PM
Source: NWS at 3:55 am AST on February 13, 2012
Regional Forecast for San Juan and Vicinity
Sunday
partlycloudy Partly cloudy with isolated showers. Highs 85 lower elevations ranging to 72 higher elevations. Chance of rain less than 20 percent.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 72 | 67 79 | 67 75 | 67 69 | 67
Wind 5 mph East 6 mph East 6 mph ENE 5 mph East
Humidity 86% 68% 76% 92%
Chance of Precip. 10% 10% 10% 10%
Cloud Cover 0% 0% 0% 0%
Conditions Rain Showers Rain Showers Rain Showers Rain Showers
Sunrise & Sunset
6:51 AM
6:25 PM
BestForecast (what's this?)
Scientific Forecaster Discussion — MOS Weather Graph
Nearby
History & Almanac
February 13, 2012 Max Temp Min Temp
Normal (TJSJ) 83 °F 71 °F
Record (TJSJ) 92 °F (1979) 64 °F (1957)
Yesterday 87 °F 72 °F
Yesterday's Cooling Degree Days: 15
Choose a date
Earthquake Activity
City Distance Mag. Time & Date
Catańo, PR 42 miles 2.8 12:04 AM AST
2012-02-13
Settlement, British Virgin Islands 105 miles 3.4 1:26 AM AST
2012-02-12
Hatillo, PR 58 miles 2.9 3:20 PM AST
2012-02-11
Culebra, PR 51 miles 2.9 11:24 AM AST
2012-02-11
Minimum magnitude displayed is 2.5.
More information at USGS.gov
Coastal Water Temperatures
Place Temperature
Fajardo, PR 78.1 °F
Aquadilla, PR 79.0 °F
San Juan, PR 80.1 °F
Mayaguez, PR 81.0 °F
Esperanza, PR 79.0 °F
Isabel Segunda, Vieques, PR 78.1 °F
Marine Forecast
Astronomy
Feb. 13, 2012 Rise Set
Actual Time 6:53 AM AST 6:24 PM AST
Civil Twilight 6:30 AM AST 6:46 PM AST
Nautical Twilight 6:05 AM AST 7:12 PM AST
Astronomical Twilight 5:39 AM AST 7:38 PM AST
Moon No Moon Rise 10:54 AM AST
Length Of Visible Light 12h 15m
Length of Day
11h 30m
Tomorrow will be 0m 55s longer.
Waning Gibbous, 65% of the Moon is Illuminated
Today
Waning Gibbous
Feb 14
Last Quarter
Feb 21
New
Feb 29
First Quarter
Mar 8
Full
Visit Astronomy
Snow Depth
Station Depth Elevation
No new snow has been reported.
Snow Depth Reports — Snow Depth Map
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Travel & Activities
Travel Planning
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Aviation
City Temp. Conditions Updated
San Juan 72 °F Partly Cloudy 4:56 AM AST
Roosevelt Roads 66 °F Clear 4:53 AM AST
Ponce 64 °F Clear 3:50 AM AST
Aquadilla 72 °F Clear 2:50 AM AST
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Flight To ETA Status
No flights were found.
Flight Tracker by FlightAware FlightAware
View U.S. Airport Delays
Type Condition
Flight Rule: VFR (TJSJ)
Wind Speed: 0.0 kts.
Wind Dir: 178° (South)
Ceiling: Unlimited

METAR TJSJ 130856Z 00000KT 10SM FEW025 22/19 A2994 RMK AO2 SLP138 T02220189 55010

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Nearby Events
Event Date Forecast
DINNER-JAN/FEB/MAR 2012 5:00 PM AST 2012-02-13 Clear, 79°F
DINNER-JAN/FEB/MAR 2012 5:00 PM AST 2012-02-15 Rain Showers, 81°F
DINNER-JAN/FEB/MAR 2012 5:00 PM AST 2012-02-16 Rain Showers, 79°F
DINNER-JAN/FEB/MAR 2012 5:00 PM AST 2012-02-17 Partly Cloudy, 79°F
DINNER-JAN/FEB/MAR 2012 5:00 PM AST 2012-02-18 Clear, 79°F
PASS Program Taste Test 9:00 AM AST 2012-02-18 Clear, 75°F
Event data courtesy eviesays.com
Sports
Event Date Forecast
Budweiser Shootout 8:29 PM EST on February 18, 2012 Partly Cloudy, 59 °F
Gatorade Duel 1 2:19 PM EST on February 23, 2012 Average High 70° F/ 21° C
Event Date Forecast
Northern Trust Open 8:30 AM PST on February 16, 2012 Clear, 63 °F
Northern Trust Open 8:30 AM PST on February 17, 2012 Clear, 63 °F
Puerto Rico Open presented by seepuertorico.com 8:30 AM AST on March 08, 2012 Average High 80° F/ 26° C
Puerto Rico Open presented by seepuertorico.com 8:30 AM AST on March 09, 2012 Average High 80° F/ 26° C
View all Sports Weather
Weather Stations
Station Location Temp. Heat Index Dew Point Humidity Wind Precipitation Elevation Updated Type Website
HADS RIO PIEDRAS AT HATO REY 1W PR, San Juan, PR - - - - North  at  - 0.00 in / hr 180 ft 2:30 AM AST MADIS
HADS RIO DE BAYAMON NEAR BAYAMON 5S PR, Barrio Obrero, PR - - - - North  at  - 0.00 in / hr 89 ft 4:15 AM AST MADIS
NOS_NWLON San Juan, PR, San Juan, PR 72 °F - - - South  at  4 mph 0.00 in / hr 0 ft 5:00 AM AST MADIS
Montecasino Station, Toa Alta, PR 67.4 °F - 64 °F 90% ENE  at  0.0 mph 0.00 in / hr 156 ft 5:35 AM AST Rapid Fire  
Santurce, San Juan, PR 73.5 °F 74 °F 66 °F 77% SSE  at  0.0 mph 0.00 in / hr 33 ft 5:35 AM AST Rapid Fire  
Colinas de Fairview, Trujillo Alto, PR 69.1 °F - 63 °F 80% SE  at  0.0 mph 0.00 in / hr 308 ft 5:35 AM AST Rapid Fire
HADS RIO GRANDE DE LOIZA BLO LAGO LOI PR, Trujillo Alto, PR - - - - North  at  - 0.00 in / hr 48 ft 4:45 AM AST MADIS
MARITIME , San Juan, PR 74 °F 72 °F - - SSW  at  7 mph 0.00 in / hr 0 ft 4:30 AM AST MADIS
Puente Teodoro Moscoso, Carolina, PR 71.8 °F - 68 °F 88% West  at  0.0 mph 0.00 in / hr 36 ft 5:35 AM AST Normal
HADS RIO CAGUAS AT VILLA BLANCA; CAGU PR, Caguas, PR - - - - North  at  - 0.00 in / hr 164 ft 1:45 AM AST MADIS
Ciudad Jardin, Carolina, PR 68.6 °F - 66 °F 90% SSE  at  0.0 mph 0.00 in / hr 10 ft 5:28 AM AST Normal  
Bo. Tomas de Castro #2, Caguas, PR 65.2 °F - 63 °F 93% SW  at  0.0 mph 0.00 in / hr 641 ft 5:29 AM AST Normal
HADS RIO CANOVANAS NEAR CAMPO RICO 45 PR, Canovanas, PR - - - - North  at  - 0.00 in / hr 225 ft 2:11 AM AST MADIS
myweatherplace.com, Loiza, PR 67.7 °F - 64 °F 87% SSW  at  0.0 mph 0.00 in / hr 6 ft 5:35 AM AST Rapid Fire
HADS RIO VALENCIANO NEAR JUNCOS 1S PR, Juncos, PR - - - - North  at  - 0.00 in / hr 319 ft 4:15 AM AST MADIS
UPR Bayamon, PR 66.5 °F - 64 °F 93% SSE  at  2.0 mph 0.00 in / hr -10000 ft 5:35 AM AST Normal
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High Surf Advisory, Coastal Flood Watch
Mobile & Email Alerts Statement as of 3:50 AM AST on February 13, 2012

... High surf advisory now in effect from 6 PM this evening to
6 am AST Wednesday...
... Coastal Flood Watch now in effect from this evening through
Tuesday afternoon...

The high surf advisory is now in effect from 6 PM this evening to
6 am AST Wednesday. The coastal Flood Watch is now in effect from
this evening through Tuesday afternoon.

* Waves and surf: northwest swells of 8 to 11 feet will generate
large breaking waves of 10 to 16 feet and frequent strong rip
currents.

* Timing: very rough and dangerous surf conditions will begin to
affect northwest Puerto rican coasts late Monday afternoon and
the rest of the local coastline on Monday evening in Puerto Rico
and the northern U.S. Virgin Islands.

* Impacts: large breaking waves... frequent and strong rip
currents and beach erosion are expected.

* Coastal flooding: coastal flooding is likely as large swell
and higher normal tides will combine on Monday night and
Tuesday.

* The times and heights of the high tides on Tuesday for the following
locations are:

San Juan harbor: 2:26 am AST at 1.4 feet and
                        1:45 PM AST at 0.9 feet.

Arecibo: 1:34 am AST at 1.8 feet and
                        1:02 PM AST at 1.3 feet.

Aguadilla: 1:22 am AST at 1.4 feet and
                        1:04 PM AST at 1.0 feet.

Magens bay3:36 am AST at 0.9 feet.

Precautionary/preparedness actions...

A high surf advisory means that high surf will affect beaches in
the advisory area... producing rip currents and localized beach
erosion.

A coastal Flood Watch means that conditions favorable to coastal
flooding are expected to develop. Coastal residents should be
alert for later statements or warnings... and take action to
protect property.