Portola Valley, CA

2:37 PM PDT on May 21, 2013 (GMT -0700)
Elev: 610 ft
Lon: 122.2° W
Lat: 37.4° N
Source
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 Updated 2:34 PM PDT Get Free Weather Stickers® Share:
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Oklahoma Tornado: More coverage on Catastrophic Tornado in Oklahoma
News
Okla Governor: We Will Rebuild After Tornado
May 21, 2013
The search and rescue efforts are ongoing in Moore, Okla. after a massive tornado levelled the town and local schools.
Weather Imagery Reveals Oklahoma Tornado
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The Moore, Oklahoma tornado showed up vividly on satellite and radar.
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In the wake of Mondays devastating tornado that ravaged the town of Moore, Okla., survivors are likely to feel incredible shock and numbness.
Tornado Leaves Small Hospital 'Pretty Much Destroyed'
May 21, 2013
Officials say a tornado hit a small hospital in suburban Oklahoma City, but all the 30 patients inside survived.
Obama: 'Americans From Every Corner of This Country Will Be With Them'
May 21, 2013
Obama has declared a major disaster in Oklahoma, ordering federal aid to supplement state and local recovery efforts. The president also spoke Monday with Oklahoma Gov. Mary Fallin and Rep. Tom Cole, whose home is in the heavily damaged town of Moore.
Why Don't More Homes in Oklahoma Have Basements?
May 21, 2013
The answer lies in the level of the water table and the soil texture in Oklahoma and in states across the Plains.
Photos: Deadly Tornado Outbreak Strikes Plains
May 21, 2013
A tornado outbreak struck the Plains states on May 19, 2013, leaving widespread damage in its wake.
Children and the Tornado: Helping Kids Cope
May 21, 2013
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Recap: Tornadoes Rake Oklahoma, Kansas, Iowa
May 21, 2013
The weather imagery, video and recap from tornadoes in the Plains on May 19, 2013.
Tornado Took Similar Path to 1999 F5
May 21, 2013
Moore, Oklahoma is no stranger to devastating tornadoes.
'I Expected Chaos:' Scenes from Okla. School
May 21, 2013
A photographer who was among the first to arrive at an Oklahoma Elementary School after a tornado destroyed it, describes the heart-wrenching scene.
A Timeline of Deadly Events in Moore, Okla.
May 21, 2013
Check out this comprehensive timeline of the events that transpired in Moore, Okla.
In Tornado's Wake, Worried Parents Seek Out Kids
May 21, 2013
A desperate search was underway by parents looking to find children after the massive tornado.
Moore Already at Work on Recovery, Says Mayor
May 21, 2013
Glenn Lewis was the mayor of Moore, Okla., when the strongest tornado on record whipped the city in 1999, and he says the most recent storm won't deter the community from rebuilding.
Moore Survivor Finds Dog Buried Alive
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Oklahoma Tornado: How to Help
May 21, 2013
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Multiple Children Dead at Okla. School
May 21, 2013
More than a dozen children are dead in the devastating Moore, Okla. tornado.
Twitter Responds With Prayers for Oklahoma Tornado Victims
May 21, 2013
Twitter responds to the devastation brought by tornadoes Monday in suburban Oklahoma City, offering condolences and prayers for the victims and survivors.
In Their Words: The Oklahoma Tornado Tragedy
May 21, 2013
Our reporters were among the first national media to report from Moore, Okla. shortly after a powerful tornado decimated the town. These are their thoughts as they report from the scene.
Obama Declares Major Disaster in Oklahoma
May 21, 2013
President Barack Obama has declared a major disaster in Oklahoma as the state recovers from a massive tornado that ripped through the Oklahoma City suburbs Monday, killing dozens and flattening entire neighborhoods.
More News Articles
Weather Summary
Kari Kiefer
Weather Underground Forecast for Tuesday, May 21, 2013.

After a devastating severe weather day in the Plains on Monday, severe weather is expected to fire up again across the nation's mid-section again on Tuesday.

The nearly stationary low over the Northern Plains will gradually weaken as it shifts eastward into the Midwest on Tuesday, while the system's associated cold front trails southwestward from the low across the Mid-Mississippi Valley through the Southern Plains. Favorable energy and conditions ahead of the cold front combined with the moisture laden conditions of the nation's mid-section will set the stage for multiple clusters of thunderstorms to develop from the Midwest into the Ozarks and the Southern Plains. Portions of northeastern Texas, extreme southeastern Oklahoma, central and southern Arkansas, and northwestern Louisiana are at moderate risk of severe thunderstorm activity as environmental conditions remain favorable for tornadoes, damaging wind gusts, and very large hail. Areas surrounding this moderate risk region from the parts of central and eastern Texas into the Upper Great Lakes are at slight risk of severe thunderstorm development with hail, damaging wind gusts, and isolated tornadoes.

Meanwhile, areas of heavy rain and widely scattered showers will continue near the low in the Northern Plains and Upper Mississippi Valley and near and to the north of a nearly stationary frontal boundary extending out ahead of the system from the Great Lakes into the Northeast. Continued precipitation in already saturated areas of the Northern Plains and Upper Midwest will maintain flood concerns from parts of North Dakota into northern Wisconsin.

Elsewhere, scattered showers and thunderstorms are expected to persist in the Mid-Atlantic and southeastern corner of the nation.
Weather Underground Forecast for Tuesday, May 21, 2013.

After a devastating severe weather day in the Plains on Monday, severe weather is expected to fire up again across the nation's mid-section again on Tuesday.

The nearly stationary low over the Northern Plains will gradually weaken as it shifts eastward into the Midwest on Tuesday, while the system's associated cold front trails southwestward from the low across the Mid-Mississippi Valley through the Southern Plains. Favorable energy and conditions ahead of the cold front combined with the moisture laden conditions of the nation's mid-section will set the stage for multiple clusters of thunderstorms to develop from the Midwest into the Ozarks and the Southern Plains. Portions of northeastern Texas, extreme southeastern Oklahoma, central and southern Arkansas, and northwestern Louisiana are at moderate risk of severe thunderstorm activity as environmental conditions remain favorable for tornadoes, damaging wind gusts, and very large hail. Areas surrounding this moderate risk region from the parts of central and eastern Texas into the Upper Great Lakes are at slight risk of severe thunderstorm development with hail, damaging wind gusts, and isolated tornadoes.

Meanwhile, areas of heavy rain and widely scattered showers will continue near the low in the Northern Plains and Upper Mississippi Valley and near and to the north of a nearly stationary frontal boundary extending out ahead of the system from the Great Lakes into the Northeast. Continued precipitation in already saturated areas of the Northern Plains and Upper Midwest will maintain flood concerns from parts of North Dakota into northern Wisconsin.

Elsewhere, scattered showers and thunderstorms are expected to persist in the Mid-Atlantic and southeastern corner of the nation.
More News Articles

Portola Valley Weather at a Glance

Updated 2:34 PM PDT
Elevation
660 ft
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Now
Clear
Clear
Temperature
66.9 °F
Feels Like 66.9 °F
Wind(mph)
3.0
Sunrise / Set
5:55 AM
8:16 PM
Moon
Waxing Gibbous
Today
Partly Cloudy 72 °F
Partly Cloudy
Tonight
Partly Cloudy 45 °F
Partly Cloudy
Tomorrow
Clear 68 | 46 °F
Clear
Thursday
Clear 70 | 46 °F
Clear
Friday
Clear 68 | 45 °F
Clear
Saturday
Clear 75 | 48 °F
Clear
Today is forecast to be Much Cooler than yesterday.
Conditions
Pressure
30.00 in
Visibility
30.0 miles
Clouds
Clear -
Moisture
Humidity
45%
Rainfall
0.00 in
Snow Depth
Not available.
METAR
METAR KPAO 212047Z 31011G19KT 30SM SKC 22/ A3000
Don't speak METAR? Read our FAQ.
Weather Radio
Launch Weather Radio
Temperature
Temperature
66.9 °F
90,91,90,88,86,64,61,59,61,64,66,68,72
Dew Point
45 °F
Wind
Speed / Dir
3.0 mph from SE
Wind Gust
6.0 mph
Health
UV
11 out of 16
Pollen
6.30 out of 12
Pollen Forecast
Ozone
Good
PM2.5
Good
Flu Activity
Sporadic
View Flu Map
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Source: BestForecast
Descriptive Forecast
Tuesday
partlycloudy Partly cloudy. High of 72F. Breezy. Winds from the West at 15 to 20 mph.
Tuesday Night
nt_partlycloudy Partly cloudy in the evening, then clear. Low of 45F. Winds from the WNW at 10 to 15 mph.
Wednesday
clear Clear. High of 68F. Breezy. Winds from the NW at 10 to 25 mph with gusts to 30 mph.
Wednesday Night
nt_clear Clear. Low of 46F. Breezy. Winds from the NW at 10 to 25 mph with gusts to 30 mph.
Thursday
clear Clear. High of 70F. Breezy. Winds from the WNW at 15 to 20 mph.
Thursday Night
nt_clear Clear. Low of 46F. Winds from the WNW at 5 to 15 mph.
Friday
clear Clear. High of 68F. Winds from the WNW at 10 to 15 mph.
Friday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 45F. Winds from the WNW at 5 to 15 mph.
Saturday
clear Clear. High of 75F. Winds from the West at 10 to 15 mph.
Saturday Night
nt_mostlycloudy Mostly cloudy. Fog overnight. Low of 48F. Winds from the West at 5 to 10 mph.
Sunday
partlycloudy Partly cloudy. High of 73F. Winds from the West at 10 to 15 mph.
Sunday Night
nt_partlycloudy Partly cloudy. Low of 48F. Winds from the WNW at 5 to 15 mph.
Monday
mostlycloudy Mostly cloudy. High of 72F. Winds from the WNW at 10 to 15 mph.
Monday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 52F. Winds from the WNW at 5 to 15 mph.
Tuesday
partlycloudy Partly cloudy. High of 73F. Winds from the WNW at 10 to 15 mph.
Tuesday Night
nt_partlycloudy Clear. Low of 50F. Winds from the WNW at 5 to 15 mph.
Wednesday
clear Clear. High of 75F. Winds from the WNW at 5 to 15 mph.
Wednesday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 52F. Winds from the WNW at 5 to 15 mph.
Thursday
partlycloudy Partly cloudy. High of 75F. Winds from the WNW at 5 to 15 mph.
Thursday Night
nt_partlycloudy Partly cloudy. Low of 52F. Winds from the WNW at 5 to 15 mph.
Friday
clear Clear. High of 73F. Winds from the WNW at 5 to 20 mph.
Friday Night
nt_clear Clear. Low of 50F. Winds from the WNW at 10 to 15 mph.
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Weather Forecast for Portola Valley CA

View Calendar 10-Day Forecast for station KCAPORTO4

Tuesday, 21
Partly Cloudy
72 | 45 °F
Partly Cloudy
Chance of
Precipitation
0%
Wednesday, 22
Clear
68 | 46 °F
Clear
Chance of
Precipitation
0%
Thursday, 23
Clear
70 | 46 °F
Clear
Chance of
Precipitation
0%
Friday, 24
Clear
68 | 45 °F
Clear
Chance of
Precipitation
0%
Saturday, 25
Clear
75 | 48 °F
Clear
Chance of
Precipitation
0%
Sunday, 26
Partly Cloudy
73 | 48 °F
Partly Cloudy
Chance of
Precipitation
0%
Monday, 27
Mostly Cloudy
72 | 52 °F
Mostly Cloudy
Chance of
Precipitation
0%
Tuesday, 28
Partly Cloudy
73 | 50 °F
Partly Cloudy
Chance of
Precipitation
0%
Wednesday, 29
Clear
75 | 52 °F
Clear
Chance of
Precipitation
0%
Thursday, 30
Partly Cloudy
75 | 52 °F
Partly Cloudy
Chance of
Precipitation
0%
Source: BestForecast at 1:44 PM PDT on May 21, 2013
Descriptive Forecast
Tuesday
partlycloudy Partly cloudy. High of 72F. Breezy. Winds from the West at 15 to 20 mph.
Tuesday Night
nt_partlycloudy Partly cloudy in the evening, then clear. Low of 45F. Winds from the WNW at 10 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 54 | 45 65 | 48 59 | 45 47 | 41
Wind 10 mph SW 17 mph West 16 mph West 11 mph WNW
Humidity 76% 54% 62% 75%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 40% 38% 28% 13%
Conditions Partly Cloudy Partly Cloudy Partly Cloudy Clear
Sunrise & Sunset
5:55 AM
8:16 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [1.95], Average RMSE [1.73]
The National Weather Service forecast quality is fair. MaxT RMSE [3.19], Average RMSE [1.44] : Use NWS
Source: BestForecast at 1:44 PM PDT on May 21, 2013
Descriptive Forecast
Wednesday
clear Clear. High of 68F. Breezy. Winds from the NW at 10 to 25 mph with gusts to 30 mph.
Wednesday Night
nt_clear Clear. Low of 46F. Breezy. Winds from the NW at 10 to 25 mph with gusts to 30 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 47 | 40 64 | 40 60 | 38 46 | 41
Wind 8 mph NW 15 mph NNW 21 mph NW 14 mph NW
Humidity 77% 40% 45% 80%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 17% 8% 6% 6%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:54 AM
8:17 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [2.01], Average RMSE [1.77]
The National Weather Service forecast quality is fair. MaxT RMSE [3.32], Average RMSE [1.54] : Use NWS
Source: BestForecast at 1:44 PM PDT on May 21, 2013
Descriptive Forecast
Thursday
clear Clear. High of 70F. Breezy. Winds from the WNW at 15 to 20 mph.
Thursday Night
nt_clear Clear. Low of 46F. Winds from the WNW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 48 | 42 58 | 42 57 | 42 49 | 45
Wind 8 mph NW 16 mph NW 15 mph WNW 10 mph WNW
Humidity 78% 55% 57% 84%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 7% 13% 13% 0%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:53 AM
8:17 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.77], Average RMSE [2.27]
The National Weather Service forecast quality is poor. MaxT RMSE [3.52], Average RMSE [1.88] : Use NWS
Source: BestForecast at 1:44 PM PDT on May 21, 2013
Descriptive Forecast
Friday
clear Clear. High of 68F. Winds from the WNW at 10 to 15 mph.
Friday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 45F. Winds from the WNW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 48 | 45 65 | 46 61 | 46 47 | 46
Wind 9 mph WNW 11 mph WNW 13 mph WNW 9 mph WNW
Humidity 86% 50% 60% 97%
Chance of Precip. 0% 10% 0% 0%
Cloud Cover 20% 0% 0% 17%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:53 AM
8:18 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [2.30], Average RMSE [2.29]
The National Weather Service forecast quality is poor. MaxT RMSE [5.23], Average RMSE [2.07] : Use NWS
Source: BestForecast at 1:44 PM PDT on May 21, 2013
Descriptive Forecast
Saturday
clear Clear. High of 75F. Winds from the West at 10 to 15 mph.
Saturday Night
nt_mostlycloudy Mostly cloudy. Fog overnight. Low of 48F. Winds from the West at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 50 | 46 67 | 49 59 | 52 50 | 50
Wind 8 mph WNW 11 mph West 11 mph West 8 mph West
Humidity 89% 49% 77% 100%
Chance of Precip. 10% 0% 0% 10%
Cloud Cover 12% 0% 19% 69%
Conditions Clear Clear Clear Fog
Sunrise & Sunset
5:52 AM
8:19 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.76], Average RMSE [2.27]
The National Weather Service forecast quality is poor. MaxT RMSE [5.34], Average RMSE [2.18] : Use NWS
Source: BestForecast at 1:44 PM PDT on May 21, 2013
Descriptive Forecast
Sunday
partlycloudy Partly cloudy. High of 73F. Winds from the West at 10 to 15 mph.
Sunday Night
nt_partlycloudy Partly cloudy. Low of 48F. Winds from the WNW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 50 | 49 65 | 50 60 | 50 51 | 49
Wind 7 mph WNW 11 mph West 12 mph West 8 mph WNW
Humidity 96% 60% 70% 90%
Chance of Precip. 10% 10% 0% 10%
Cloud Cover 88% 75% 14% 33%
Conditions Fog Mostly Cloudy Clear Partly Cloudy
Sunrise & Sunset
5:52 AM
8:20 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.50], Average RMSE [2.45]
The National Weather Service forecast quality is poor. MaxT RMSE [5.70], Average RMSE [2.29] : Use NWS
Source: BestForecast at 1:44 PM PDT on May 21, 2013
Descriptive Forecast
Monday
mostlycloudy Mostly cloudy. High of 72F. Winds from the WNW at 10 to 15 mph.
Monday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 52F. Winds from the WNW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 50 | 48 65 | 48 61 | 47 53 | 52
Wind 7 mph WNW 11 mph WNW 13 mph WNW 8 mph WNW
Humidity 91% 52% 62% 98%
Chance of Precip. 10% 0% 0% 0%
Cloud Cover 75% 72% 89% 17%
Conditions Mostly Cloudy Mostly Cloudy Overcast Fog
Sunrise & Sunset
5:51 AM
8:20 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [3.80], Average RMSE [2.66]
Source: BestForecast at 1:44 PM PDT on May 21, 2013
Descriptive Forecast
Tuesday
partlycloudy Partly cloudy. High of 73F. Winds from the WNW at 10 to 15 mph.
Tuesday Night
nt_partlycloudy Clear. Low of 50F. Winds from the WNW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 53 | 53 68 | 54 65 | 51 54 | 49
Wind 7 mph WNW 11 mph WNW 13 mph WNW 7 mph WNW
Humidity 97% 59% 62% 87%
Chance of Precip. 10% 10% 0% 0%
Cloud Cover 73% 71% 20% 29%
Conditions Fog Mostly Cloudy Clear Partly Cloudy
Sunrise & Sunset
5:51 AM
8:21 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.26], Average RMSE [4.88]
Source: BestForecast at 1:44 PM PDT on May 21, 2013
Descriptive Forecast
Wednesday
clear Clear. High of 75F. Winds from the WNW at 5 to 15 mph.
Wednesday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 52F. Winds from the WNW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 52 | 49 70 | 53 68 | 56 54 | 54
Wind 7 mph WNW 8 mph WNW 12 mph WNW 8 mph WNW
Humidity 88% 52% 66% 100%
Chance of Precip. 0% 10% 10% 10%
Cloud Cover 1% 6% 12% 33%
Conditions Clear Clear Clear Fog
Sunrise & Sunset
5:50 AM
8:22 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.38], Average RMSE [3.33]
Source: BestForecast at 1:44 PM PDT on May 21, 2013
Descriptive Forecast
Thursday
partlycloudy Partly cloudy. High of 75F. Winds from the WNW at 5 to 15 mph.
Thursday Night
nt_partlycloudy Partly cloudy. Low of 52F. Winds from the WNW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 54 | 52 70 | 51 64 | 50 54 | 50
Wind 6 mph WNW 7 mph WNW 13 mph WNW 10 mph WNW
Humidity 95% 51% 60% 87%
Chance of Precip. 10% 10% 10% 10%
Cloud Cover 54% 47% 40% 28%
Conditions Fog Partly Cloudy Partly Cloudy Partly Cloudy
Sunrise & Sunset
5:50 AM
8:22 PM
Source: BestForecast at 1:44 PM PDT on May 21, 2013
Descriptive Forecast
Friday
clear Clear. High of 73F. Winds from the WNW at 5 to 20 mph.
Friday Night
nt_clear Clear. Low of 50F. Winds from the WNW at 10 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 54 | 49 68 | 47 62 | 45 54 | 45
Wind 8 mph WNW 10 mph NW 15 mph WNW 11 mph WNW
Humidity 89% 46% 51% 70%
Chance of Precip. 10% 10% 0% 0%
Cloud Cover 16% 17% 19% 9%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
Sun does not rise
Source: BestForecast at 1:44 PM PDT on May 21, 2013
Descriptive Forecast
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 54 | 45 70 | 45 65 | 45 57 | 46
Wind 9 mph NW 11 mph NW 21 mph WNW 23 mph NW
Humidity 71% 40% 49% 65%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% % % %
Conditions Clear Clear Clear Clear
Sunrise & Sunset
Sun does not rise
Scientific Forecaster Discussion — MOS Weather Graph
Nearby
Active Notice: Public Information Statement  (US Severe Weather)
History & Almanac
May 21, 2013 Max Temp Min Temp
Normal (KNUQ) 73 °F 54 °F
Record (KNUQ) 96 °F (2000) 44 °F (1974)
Yesterday 90 °F 55 °F
Yesterday's Cooling Degree Days: 8
Choose a date
Earthquake Activity
City Distance Mag. Time & Date
The Geysers, California 104 miles 3.0 11:11 PM PDT
2013-05-14
Minimum magnitude displayed is 2.5.
More information at USGS.gov
Air Quality
  Air Quality AQ Index Pollutant
Yesterday Good
OZONE
Yesterday Good
PM2.5
Current Good
PM2.5
Current Good
OZONE
Tuesday Good
OZONE
Wednesday Good
OZONE
Thursday Good
OZONE
Friday Good
OZONE
Saturday Good
OZONE
Sunday Good
OZONE
Coastal Water Temperatures
Place Temperature
San Francisco, CA 57.0 °F
Richmond, CA 64.0 °F
Port Chicago, CA 66.9 °F
Marine Forecast
Astronomy
May. 21, 2013 Rise Set
Actual Time 5:55 AM PDT 8:16 PM PDT
Civil Twilight 5:25 AM PDT 8:45 PM PDT
Nautical Twilight 4:48 AM PDT 9:22 PM PDT
Astronomical Twilight 4:08 AM PDT 10:02 PM PDT
Moon 4:40 PM PDT 3:21 AM PDT
Length Of Visible Light 15h 20m
Length of Day
14h 20m
Tomorrow will be 1m 27s longer.
Waxing Gibbous, 85% of the Moon is Illuminated
Today
Waxing Gibbous
May 24
Full
May 31
Last Quarter
Jun 8
New
Jun 16
First Quarter
Visit Astronomy
Today's Extremes
State Highs State Lows
100 °F
Palm Springs
99 °F
Imperial
99 °F
El Centro
99 °F
Thermal
98 °F
Needles
32 °F
Big Bear City
33 °F
Truckee-Tahoe
39 °F
South Lake Tahoe
43 °F
Mount Shasta
44 °F
Tehachapi
Record Extremes
Snow Depth
Station Depth Elevation
Blue Lakes 0 in 8000 ft
Forestdale Creek 0 in 8029 ft
Leavitt Lake 60 in 9400 ft
Spratt Creek 0 in 6200 ft
Rubicon #2 0 in 7500 ft
Snow Depth Reports — Snow Depth Map
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Aviation
City Temp. Conditions Updated
Palo Alto 72 °F Clear 1:47 PM PDT
Moffett NAS 73 °F Clear 1:56 PM PDT
San Carlos 66 °F Clear 1:47 PM PDT
San Jose 69 °F Clear 1:53 PM PDT
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Flight To ETA Status
SWA3589
Los Angeles, CA 		KSJC 02:30PM On Time
SWA2168
Burbank, CA 		KSJC 02:40PM On Time
ASA324
Seattle, WA 		KSJC 02:42PM On Time
SWA1823
San Diego, CA 		KSJC 02:50PM On Time
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Type Condition
Flight Rule: VFR (KPAO)
Wind Speed: 11.0 kts.
Wind Dir: 141° (SE)
Ceiling: Unlimited

METAR KPAO 212047Z 31011G19KT 30SM SKC 22/ A3000

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Nearby Events
Event Date Forecast
New Esterhazy Quartet, Season 6, Concert 4B 8:00 PM PDT
2013-04-21		 Partly Cloudy, 64°F
Event data courtesy eviesays.com
Sports
Event Date Forecast
Tigers vs. Indians 7:05 PM EDT on May 21, 2013 Chance of a Thunderstorm, 81 °F
Yankees vs. Orioles 7:05 PM EDT on May 21, 2013 Thunderstorm, 81 °F
Event Date Forecast
Livorno vs. Brescia 6:30 PM CEST on May 22, 2013 Clear, High 71° F/ 22° C
Empoli vs. Novara 8:45 PM CEST on May 22, 2013 Clear, High 69° F/ 21° C
Portland vs. San Jose 7:30 PM PDT on June 27, 2013 Average High 82° F/ 27° C
Los Angeles vs. San Jose 7:30 PM PDT on June 29, 2013 Average High 79° F/ 26° C
Event Date Forecast
Coca-Cola 600 6:16 PM EDT on May 26, 2013 Partly Cloudy, 70 °F
FedEx 400 benefiting Autism Speaks 1:15 PM EDT on June 02, 2013 Average High 81° F/ 27° C
Event Date Forecast
Crowne Plaza Invitational at Colonial 8:30 AM CDT on May 23, 2013 Partly Cloudy, 68 °F
Crowne Plaza Invitational at Colonial 8:30 AM CDT on May 24, 2013 Partly Cloudy, 70 °F
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Weather Stations
Station Location Temp. Heat Index Dew Point Humidity Wind Precipitation Elevation Updated Type Website
Central Portola Valley, Portola Valley, CA 66.9 °F - 45 °F 45% SE  at  3.0 mph 0.00 in / hr 660 ft 2:34 PM PDT Normal
Portola Valley, Portola Valley, CA 67.8 °F - - - SW  at  5.8 mph 0.00 in / hr 764 ft 2:32 PM PDT Normal  
Alpine Hills, Portola Valley, CA 65.5 °F - 49 °F 56% WSW  at  6.9 mph 0.00 in / hr 690 ft 2:34 PM PDT Normal  
Westridge, Portola Valley, CA 71.4 °F 77 °F 47 °F 42% West  at  3.0 mph 0.00 in / hr 570 ft 2:35 PM PDT Normal  
Jasper Ridge Biological Preserve, Woodside, CA 69.2 °F - 42 °F 37% SW  at  10.0 mph 0.00 in / hr 420 ft 2:33 PM PDT Normal
Los Altos Hills AA6IW, Los Altos Hills, CA 63.0 °F - 42 °F 46% SSW  at  16.3 mph 0.00 in / hr 851 ft 2:37 PM PDT Rapid Fire  
Rapley Ranch, Woodside, CA 60.1 °F - 32 °F 35% SSW  at  6.3 mph 0.00 in / hr 1600 ft 2:37 PM PDT Normal  
SLAC's Campus, Menlo Park, CA 72.5 °F 76 °F 37 °F 27% ENE  at  3.7 mph - / hr 262 ft 2:33 PM PDT Normal  
Langley Hill, Woodside, CA 53.8 °F - 45 °F 71% West  at  14.0 mph 0.00 in / hr 400 ft 2:22 PM PDT Normal  
Woodside, Woodside, CA 69.4 °F - 44 °F 40% WNW  at  1.0 mph 0.00 in / hr 375 ft 2:35 PM PDT Normal  
RAWS LOS ALTOS CA, Los Altos, CA 69 °F - 35 °F 28% SW  at  8 mph 0.00 in / hr 539 ft 2:10 PM PDT MADIS
APRSWXNET W.Menlo Park CA, Menlo Park, CA 70 °F - 40 °F 34% NNE  at  3 mph 0.00 in / hr 115 ft 2:15 PM PDT MADIS
Cuesta La Honda, La Honda, CA 57.7 °F - 49 °F 73% NW  at  2.5 mph 0.00 in / hr 862 ft 2:37 PM PDT Rapid Fire
Stanford University, Stanford, CA 72.9 °F 77 °F 43 °F 34% WNW  at  4.0 mph 0.00 in / hr 80 ft 2:35 PM PDT Normal  
Cuesta La Honda, La Honda, CA 63.9 °F - 45 °F 51% ESE  at  2.0 mph 0.00 in / hr 697 ft 2:23 PM PDT Normal
Los Altos Hills, Los Altos Hills, CA 68.9 °F - 42 °F 37% WNW  at  3.0 mph 0.00 in / hr 650 ft 2:36 PM PDT Rapid Fire  
Los Altos Hills, CA 68.8 °F - 48 °F 47% SSW  at  5.1 mph 0.00 in / hr 96 ft 2:35 PM PDT Normal  
College Terrace, Palo Alto, CA 74.1 °F 77 °F 45 °F 35% NNW  at  1.0 mph 0.00 in / hr 43 ft 2:36 PM PDT Normal  
RAWS LA HONDA CA, La Honda, CA 63 °F - 46 °F 53% West  at  6 mph 0.00 in / hr 804 ft 2:07 PM PDT MADIS
Barron Park, Palo Alto, CA 79.5 °F 79 °F 42 °F 27% South  at  0.0 mph 0.00 in / hr 40 ft 2:37 PM PDT Rapid Fire  
Allied Arts, Menlo Park, CA 69.4 °F - 45 °F 41% SW  at  2.0 mph 0.00 in / hr 70 ft 2:36 PM PDT Rapid Fire  
Beresford Ave, Redwood City, CA 74.5 °F 77 °F 50 °F 31% West  at  5.4 mph 0.00 in / hr 66 ft 2:30 PM PDT Normal
Alpine Road, La Honda, CA 55.9 °F - 45 °F 67% WNW  at  11.0 mph 0.00 in / hr 1594 ft 2:37 PM PDT Rapid Fire  
Evergreen Park, Palo Alto, CA 77.2 °F 78 °F 45 °F 32% North  at  0.0 mph 0.00 in / hr 35 ft 2:31 PM PDT Normal  
APRSWXNET Menlo Park CA , Menlo Park, CA 71 °F 77 °F 43 °F 36% NNW  at  1 mph 0.00 in / hr 75 ft 1:44 PM PDT MADIS
Near village, Los Altos, CA 74.5 °F 77 °F 33 °F 36% North  at  - 0.00 in / hr 230 ft 2:37 PM PDT Normal  
Stulsaft Park, Redwood City, CA 70.6 °F 77 °F 46 °F 42% North  at  0.0 mph 0.00 in / hr 233 ft 2:37 PM PDT Rapid Fire  
Los Altos High School, Los Altos, CA 73.6 °F 77 °F 41 °F 31% SW  at  4.0 mph 0.00 in / hr 140 ft 2:36 PM PDT Normal  
Old Palo Alto (Waverley St), Palo Alto, CA 69.8 °F - 40 °F 33% WNW  at  3.2 mph 0.00 in / hr 57 ft 2:37 PM PDT Rapid Fire
Walnut Grove, Palo Alto, CA 76.2 °F 77 °F 42 °F 29% NE  at  2.0 mph 0.00 in / hr 36 ft 2:35 PM PDT Normal  
Old Palo Alto, Palo Alto, CA 74.9 °F 77 °F 47 °F 37% SW  at  0.0 mph 0.00 in / hr 20 ft 2:37 PM PDT Normal  
Fairmeadow, Palo Alto, CA 72.7 °F 77 °F 45 °F 37% NW  at  3.0 mph 0.00 in / hr 15 ft 2:35 PM PDT Normal
Los Altos Country Club, Los Altos, CA 76.1 °F 77 °F 43 °F 31% SW  at  0.0 mph - / hr 292 ft 2:32 PM PDT Normal  
Montebello Rd, Los Altos, CA 53.8 °F - 41 °F 61% SSW  at  17.0 mph 0.00 in / hr 2300 ft 2:36 PM PDT Rapid Fire  
Devil's Ridge, La Honda, CA 53.2 °F - 43 °F 69% SW  at  16.0 mph 0.00 in / hr 2400 ft 2:33 PM PDT Normal  
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Public Information Statement
Mobile & Email Alerts Statement as of 4:37 PM EDT on May 21, 2013

...Highest Winds In The Past Hour...


... Location... ... time... ... wind...
... Offshore reporting stations...

Buoy 28 (maritime) 1250 PM may 21 45 mph
Drakes Bay - pt Reyes (nos-nwlon) 1236 PM may 21 40 mph
buoy 13 (maritime) 1250 PM may 21 36 mph
28 WSW Santa Cruz (maritime) 1250 PM may 21 36 mph
Anita Rock San Francisco (wxflow) 113 PM may 21 35 mph
buoy 26 (maritime) 1250 PM may 21 34 mph
Benicia bridge (nos-ports) 106 PM may 21 33 mph
2 WNW Vine Hill (nos-ports) 1248 PM may 21 32 mph
Aquatic Park (25 ft)(wxflow) 114 PM may 21 29 mph
1 W Bodega Bay (40 ft)(wxflow) 1245 PM may 21 29 mph
pt Potrero (nos-ports) 1248 PM may 21 27 mph
San Leandro Marina (25 ft)(wxflow) 1257 PM may 21 27 mph
Treasure Island (wxflow) 113 PM may 21 26 mph
crissy field (nos-ports) 1236 PM may 21 26 mph
4 SSW Berkeley (nos-ports) 106 PM may 21 25 mph
1 WNW Rodeo (nos-ports) 1254 PM may 21 24 mph
1 W Point Arena (nos-nwlon) 1236 PM may 21 23 mph
4 NE San Francisco (4 ft)(wxflow) 1253 PM may 21 21 mph
3 WSW Richmond (nos-ports) 106 PM may 21 20 mph

... California...

... Alameda County...
Calaveras Rd RAWS (1230 ft)(goes) 118 PM may 21 29 mph
3 se Hayward (10 ft)(aprswxnet) 119 PM may 21 29 mph
Alameda Marina (57 ft)(wxflow) 100 PM may 21 25 mph
Hayward air terminal (43 ft)(asos) 1254 PM may 21 23 mph
5 SSW Berkeley (nos-ports) 1242 PM may 21 23 mph
2 S Hayward (52 ft)(aprswxnet) 107 PM may 21 23 mph
2 se Oakland (42 ft)(urbanet) 1254 PM may 21 22 mph
Livermore Municipal Airport (asos) 1253 PM may 21 22 mph
1 NE San Leandro (95 ft)(urbanet) 1254 PM may 21 22 mph
Berkeley Marina (45 ft)(wxflow) 107 PM may 21 21 mph
2 se Livermore (567 ft)(aprswxnet) 1237 PM may 21 21 mph
Alameda point (nos-ports) 106 PM may 21 21 mph

... Contra Costa County...
los Vaqueros RAWS (1120 ft)(goes) 1245 PM may 21 31 mph
Mallory Ridge RAWS (2040 ft)(goes) 102 PM may 21 28 mph
2 N Pittsburg (nos-ports) 1236 PM may 21 27 mph
2 WSW Rodeo (25 ft)(wxflow) 1245 PM may 21 26 mph
Pittsburg (46 ft)(urbanet) 1239 PM may 21 24 mph
3 S Richmond (164 ft)(aprswxnet) 1253 PM may 21 23 mph
1 W Brentwood (29 ft)(aprswxnet) 1246 PM may 21 23 mph
1 NNE Pittsburg (32 ft)(aprswxnet) 118 PM may 21 22 mph
Concord Buchanan Field (18 ft)(asos) 1253 PM may 21 22 mph
3 S Richmond (164 ft)(nos-ports) 1248 PM may 21 21 mph
2 se Richmond (68 ft)(aprswxnet) 117 PM may 21 20 mph

... Marin County...
pt Reyes lighthouse (525 ft)(mesowest) 1240 PM may 21 45 mph
pt Reyes rca (86 ft)(mesowest) 1240 PM may 21 34 mph
3 WNW Novato (216 ft)(aprswxnet) 117 PM may 21 34 mph
Tomales Bay (16 ft)(wxflow) 114 PM may 21 34 mph
Woodacre RAWS (1400 ft)(mtr-alert) 1251 PM may 21 32 mph
3 SSW Sausalito (30 ft)(wxflow) 113 PM may 21 26 mph
Tiburon (wxflow) 102 PM may 21 26 mph
Corte Madera (12 ft)(wxflow) 1245 PM may 21 24 mph
pt Blunt Angel Island (10 ft)(wxflow) 102 PM may 21 22 mph
Tamalpais-Homestead (350 ft)(aprswxnet) 115 PM may 21 21 mph
Gnoss Field Airport (awos) 1235 PM may 21 21 mph

... Monterey County...
Bradley RAWS (540 ft)(goes) 112 PM may 21 28 mph
1 NE King City (389 ft)(aws) 119 PM may 21 25 mph
Greenfield (260 ft)(aws) 109 PM may 21 23 mph
Hastings RAWS (1824 ft)(goes) 111 PM may 21 22 mph
Salinas ap (74 ft)(asos) 1253 PM may 21 22 mph
Arroyo Seco RAWS (980 ft)(goes) 104 PM may 21 21 mph
Monterey Peninsula Airport (asos) 1254 PM may 21 20 mph

... Napa County...
Napa County Airport (14 ft)(asos) 1250 PM may 21 30 mph
2 se Angwin (1729 ft)(aprswxnet) 107 PM may 21 20 mph

... San Benito County...
Black Mountain (3500 ft)(goes) 107 PM may 21 24 mph
2 NNW Hollister (229 ft)(awos) 1250 PM may 21 22 mph

... San Francisco County...
1 SW San Francisco (188 ft)(aprswxnet) 129 PM may 21 28 mph
1 SW San Francisco (188 ft)(aprswxnet) 103 PM may 21 28 mph
1 ENE San Francisco (16 ft)(aprswxnet) 127 PM may 21 22 mph
San Francisco (49 ft)(aprswxnet) 110 PM may 21 22 mph
2 NE San Francisco (nos-ports) 1242 PM may 21 22 mph
4 W San Francisco (274 ft)(urbanet) 1254 PM may 21 22 mph
Alcatraz (65 ft)(wxflow) 106 PM may 21 21 mph

... San Mateo County...
San Francisco wso ap (8 ft)(asos) 1235 PM may 21 44 mph
Spring Vly RAWS (1075 ft)(goes) 118 PM may 21 42 mph
2 se Brisbane (15 ft)(wxflow) 1255 PM may 21 37 mph
2 ENE San Mateo (25 ft)(wxflow) 108 PM may 21 34 mph
2 ENE San Mateo (25 ft)(wxflow) 106 PM may 21 31 mph
Half Moon Bay Airport (65 ft)(awos) 1255 PM may 21 30 mph
candlestick pt (45 ft)(wxflow) 1250 PM may 21 29 mph
1 WSW El Granada (24 ft)(wxflow) 1255 PM may 21 29 mph
2 ENE Redwood City (nos-ports) 106 PM may 21 27 mph
Pulgas RAWS (644 ft)(goes) 118 PM may 21 26 mph
1 N San Mateo (9 ft)(aprswxnet) 1249 PM may 21 23 mph
4 se El Granada (78 ft)(urbanet) 1239 PM may 21 23 mph
1 se Woodside (130 ft)(aprscsvparse) 118 PM may 21 22 mph
Emerald Lake hills (261 ft)(wxforyou) 1251 PM may 21 20 mph
San Carlos Airport (3 ft)(awos) 1252 PM may 21 20 mph

... Santa Clara County...
San Martin (86 ft)(awos) 115 PM may 21 25 mph

... Santa Cruz County...
9 WSW Boulder Creek (35 ft)(wxflow) 107 PM may 21 41 mph

... Sonoma County...
5 W Petaluma (419 ft)(aprswxnet) 1242 PM may 21 32 mph
2 W Bodega Bay (39 ft)(map) 100 PM may 21 31 mph
Petaluma Municipal Airport (awos) 115 PM may 21 29 mph
Petaluma (7 ft)(aprswxnet) 130 PM may 21 28 mph
Hawkeye RAWS (2020 ft)(raws) 1256 PM may 21 26 mph
5 NNW Bodega Bay (335 ft)(aprswxnet) 124 PM may 21 25 mph
1 ESE Santa Rosa (196 ft)(aprswxnet) 115 PM may 21 23 mph
6 se Gualala (196 ft)(aprswxnet) 1240 PM may 21 21 mph
4 se occidental (357 ft)(aprswxnet) 119 PM may 21 21 mph
3 NW Roseland (106 ft)(aprswxnet) 1257 PM may 21 20 mph
3 NW Petaluma (42 ft)(aprswxnet) 112 PM may 21 20 mph
Healdsburg Municipal Airport 1235 PM may 21 20 mph


Observations are collected from a variety of sources with varying
equipment and exposures. Not all data listed is considered official. The
National Weather Service thanks its private and public partners for
providing US with this data.


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