Atherton, CA

6:33 AM PDT on May 25, 2012 (GMT -0700)
Elev: 89 ft
Lon: 122.2° W
Lat: 37.5° N
Source
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Active Advisory: Special Statement (US Severe Weather)
Tropical Weather: Invest 94 (North Atlantic) Hurricane Bud (East Pacific) Typhoon Sanvu (Western Pacific)
Weather Summary
Jessica Parker
Weather Underground Forecast for Friday, May 25, 2012.

Expect more active weather to develop across the Great Lakes on Friday, as a low pressure system moves from the Upper Midwest into eastern Canada. This system will push a cold front over the Great Lakes and Midwest, producing scattered showers and thunderstorms throughout the day. There is a slight chance that some of these storms will turn severe with strong winds and large hail. Rainfall totals will range from 1 to 2 inches, with over 2 inches likely in areas of severe weather development.

Behind this activity in the West, a low pressure system will move over the Great Basin and into the Southern Rockies. Flow around this system will produce cooler temperatures across the West, while also triggering scattered showers over the Pacific Northwest, northern California, and Intermountain West. Snow showers may develop again across the highest elevations of the Northern Rockies.

Meanwhile in the East, high pressure builds from the Plains, over the Mississippi River Valley, and into the Eastern US. This will keep moisture away to the north, allowing for dry, sunny, and warm conditions. High temperatures will range in the 80s and 90s from the Central Plains through the Eastern Valleys, with parts of the Southern US reaching into the lower 100s.
Weather Underground Forecast for Friday, May 25, 2012.

Expect more active weather to develop across the Great Lakes on Friday, as a low pressure system moves from the Upper Midwest into eastern Canada. This system will push a cold front over the Great Lakes and Midwest, producing scattered showers and thunderstorms throughout the day. There is a slight chance that some of these storms will turn severe with strong winds and large hail. Rainfall totals will range from 1 to 2 inches, with over 2 inches likely in areas of severe weather development.

Behind this activity in the West, a low pressure system will move over the Great Basin and into the Southern Rockies. Flow around this system will produce cooler temperatures across the West, while also triggering scattered showers over the Pacific Northwest, northern California, and Intermountain West. Snow showers may develop again across the highest elevations of the Northern Rockies.

Meanwhile in the East, high pressure builds from the Plains, over the Mississippi River Valley, and into the Eastern US. This will keep moisture away to the north, allowing for dry, sunny, and warm conditions. High temperatures will range in the 80s and 90s from the Central Plains through the Eastern Valleys, with parts of the Southern US reaching into the lower 100s.
Weather Underground Broadcast Network

Atherton Weather at a Glance

Updated 6:20 AM PDT
Weather Station - report
Atherton
Elevation
53 ft
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Now
Scattered Clouds
Scattered Clouds
Temperature
50.3 °F
Feels Like 50.3 °F
Wind(mph)
0.0
Sunrise / Set
5:52 AM
8:19 PM
Moon
Waxing Crescent
Today
Thunderstorm 66 °F
T-storms
20% chance of precipitation
Tonight
Thunderstorm 48 °F
T-storms
20% chance of precipitation
Tomorrow
Partly Cloudy 68 | 46 °F
Partly Cloudy
Sunday
Partly Cloudy 73 | 46 °F
Partly Cloudy
Monday
Partly Cloudy 72 | 46 °F
Partly Cloudy
Tuesday
Partly Cloudy 73 | 46 °F
Partly Cloudy
Today is forecast to be Cooler than yesterday.
Conditions
Pressure
29.76 in
Visibility
10.0 miles
Clouds
Scattered Clouds 1900 ft
Moisture
Humidity
72%
Rainfall
0.00 in
Snow Depth
Not available.
METAR
METAR KSQL 251310Z AUTO 30017G22KT 10SM SCT019 10/05 A2976 RMK AO2
Don't speak METAR? Read our FAQ.
Weather Radio
Launch Weather Radio
Temperature
Temperature
50.3 °F
Dew Point
42 °F
Wind
Speed / Dir
Calm
Wind Gust
0.0 mph
Health
UV
0 out of 16
Pollen
6.50 out of 12
Pollen Forecast
Ozone
Good
PM2.5
Good
Flu Activity
Local Activity
View Flu Map
Loading…
Source: BestForecast
Descriptive Forecast
Friday
tstorms Partly cloudy with thunderstorms and a chance of rain. High of 66F. Breezy. Winds from the WNW at 20 to 25 mph. Chance of rain 20%.
Friday Night
nt_tstorms Partly cloudy with thunderstorms and a chance of rain. Low of 48F. Winds from the West at 5 to 15 mph. Chance of rain 20%.
Saturday
partlycloudy Partly cloudy. High of 68F. Winds from the West at 10 to 15 mph.
Saturday Night
nt_partlycloudy Partly cloudy. Low of 46F. Winds from the West at 5 to 15 mph.
Sunday
partlycloudy Partly cloudy in the morning, then clear. High of 73F. Winds from the West at 5 to 15 mph.
Sunday Night
nt_partlycloudy Partly cloudy in the evening, then mostly cloudy. Fog overnight. Low of 46F. Winds from the WNW at 5 to 10 mph.
Monday
partlycloudy Partly cloudy in the morning, then clear. High of 72F. Winds from the WNW at 10 to 15 mph.
Monday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 46F. Winds from the WNW at 5 to 15 mph.
Tuesday
partlycloudy Partly cloudy in the morning, then clear. High of 73F. Winds from the WNW at 5 to 15 mph.
Tuesday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 46F. Winds from the WNW at 5 to 10 mph.
Wednesday
partlycloudy Clear. High of 77F. Winds from the WNW at 5 to 15 mph.
Wednesday Night
nt_clear Clear. Low of 52F. Winds from the West at 5 to 10 mph.
Thursday
clear Clear. High of 82F. Winds from the WNW at 5 to 10 mph.
Thursday Night
nt_clear Clear. Low of 52F. Winds from the West at 5 to 10 mph.
Friday
clear Clear. High of 77F. Winds from the West at 5 to 10 mph.
Friday Night
nt_clear Clear. Low of 52F. Winds from the West at 5 to 15 mph.
Saturday
clear Clear. High of 75F. Winds from the WNW at 5 to 15 mph.
Saturday Night
nt_clear Clear. Low of 50F. Winds from the WNW at 5 to 15 mph.
Sunday
clear Clear. High of 73F. Winds from the WNW at 5 to 20 mph.
Sunday Night
nt_clear Clear. Low of 50F. Winds from the WNW at 10 to 15 mph.
Monday
clear Clear. High of 75F. Winds from the WNW at 5 to 20 mph.
Monday Night
nt_clear Clear. Low of 50F. Winds from the WNW at 5 to 15 mph.
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Forecast

View Calendar 10-Day Forecast for station KCAATHER4

Friday, 25
Thunderstorm
66 | 48 °F
T-storms
Chance of
Precipitation
20%
Saturday, 26
Partly Cloudy
68 | 46 °F
Partly Cloudy
Chance of
Precipitation
0%
Sunday, 27
Partly Cloudy
73 | 46 °F
Partly Cloudy
Chance of
Precipitation
0%
Monday, 28
Partly Cloudy
72 | 46 °F
Partly Cloudy
Chance of
Precipitation
0%
Tuesday, 29
Partly Cloudy
73 | 46 °F
Partly Cloudy
Chance of
Precipitation
0%
Wednesday, 30
Partly Cloudy
77 | 52 °F
Partly Cloudy
Chance of
Precipitation
0%
Thursday, 31
Clear
82 | 52 °F
Clear
Chance of
Precipitation
0%
Friday, 1
Clear
77 | 52 °F
Clear
Chance of
Precipitation
0%
Saturday, 2
Clear
75 | 50 °F
Clear
Chance of
Precipitation
0%
Sunday, 3
Clear
73 | 50 °F
Clear
Chance of
Precipitation
0%
Source: BestForecast at 1:16 AM PDT on May 25, 2012
Descriptive Forecast
Friday
tstorms Partly cloudy with thunderstorms and a chance of rain. High of 66F. Breezy. Winds from the WNW at 20 to 25 mph. Chance of rain 20%.
Friday Night
nt_tstorms Partly cloudy with thunderstorms and a chance of rain. Low of 48F. Winds from the West at 5 to 15 mph. Chance of rain 20%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 49 | 44 64 | 52 58 | 45 53 | 47
Wind 16 mph WNW 22 mph WNW 16 mph WNW 7 mph WSW
Humidity 79% 62% 59% 82%
Chance of Precip. 20% 20% 20% 10%
Cloud Cover 59% 61% 68% 35%
Conditions Chance of Rain Thunderstorm Thunderstorm Partly Cloudy
Sunrise & Sunset
5:52 AM
8:19 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [2.12], Average RMSE [1.48]
The National Weather Service forecast quality is good. MaxT RMSE [2.01], Average RMSE [1.73] : Use NWS
Source: BestForecast at 1:16 AM PDT on May 25, 2012
Descriptive Forecast
Saturday
partlycloudy Partly cloudy. High of 68F. Winds from the West at 10 to 15 mph.
Saturday Night
nt_partlycloudy Partly cloudy. Low of 46F. Winds from the West at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 50 | 46 67 | 57 60 | 48 51 | 47
Wind 5 mph WSW 10 mph West 11 mph West 5 mph West
Humidity 84% 72% 63% 85%
Chance of Precip. 10% 10% 0% 0%
Cloud Cover 52% 43% 50% 60%
Conditions Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy
Sunrise & Sunset
5:51 AM
8:20 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.60], Average RMSE [1.48]
The National Weather Service forecast quality is good. MaxT RMSE [2.29], Average RMSE [1.96] : Use NWS
Source: BestForecast at 1:16 AM PDT on May 25, 2012
Descriptive Forecast
Sunday
partlycloudy Partly cloudy in the morning, then clear. High of 73F. Winds from the West at 5 to 15 mph.
Sunday Night
nt_partlycloudy Partly cloudy in the evening, then mostly cloudy. Fog overnight. Low of 46F. Winds from the WNW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 50 | 45 68 | 55 69 | 49 53 | 48
Wind 3 mph WSW 8 mph WNW 11 mph WNW 8 mph WNW
Humidity 84% 62% 51% 84%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 58% 13% 19% 4%
Conditions Partly Cloudy Clear Clear Clear
Sunrise & Sunset
5:51 AM
8:21 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.66], Average RMSE [2.09]
The National Weather Service forecast quality is good. MaxT RMSE [2.41], Average RMSE [2.06] : Use NWS
Source: BestForecast at 1:16 AM PDT on May 25, 2012
Descriptive Forecast
Monday
partlycloudy Partly cloudy in the morning, then clear. High of 72F. Winds from the WNW at 10 to 15 mph.
Monday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 46F. Winds from the WNW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 49 | 47 67 | 56 62 | 48 51 | 47
Wind 7 mph WNW 11 mph WNW 12 mph WNW 8 mph WNW
Humidity 87% 67% 61% 83%
Chance of Precip. 10% 10% 0% 0%
Cloud Cover 77% 0% 0% 4%
Conditions Fog Clear Clear Clear
Sunrise & Sunset
5:50 AM
8:21 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [3.50], Average RMSE [1.97]
The National Weather Service forecast quality is fair. MaxT RMSE [2.85], Average RMSE [2.06] : Use NWS
Source: BestForecast at 1:16 AM PDT on May 25, 2012
Descriptive Forecast
Tuesday
partlycloudy Partly cloudy in the morning, then clear. High of 73F. Winds from the WNW at 5 to 15 mph.
Tuesday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 46F. Winds from the WNW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 50 | 45 66 | 53 67 | 51 53 | 46
Wind 6 mph WNW 8 mph WNW 10 mph WNW 6 mph WNW
Humidity 85% 62% 54% 79%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 34% 1% 0% 43%
Conditions Fog Clear Clear Partly Cloudy
Sunrise & Sunset
5:50 AM
8:22 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.58], Average RMSE [2.23]
The National Weather Service forecast quality is fair. MaxT RMSE [3.31], Average RMSE [2.03] : Use NWS
Source: BestForecast at 1:16 AM PDT on May 25, 2012
Descriptive Forecast
Wednesday
partlycloudy Clear. High of 77F. Winds from the WNW at 5 to 15 mph.
Wednesday Night
nt_clear Clear. Low of 52F. Winds from the West at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 49 | 45 70 | 56 70 | 51 55 | 48
Wind 5 mph WNW 8 mph WNW 10 mph WNW 5 mph WNW
Humidity 83% 59% 50% 77%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 36% 0% 0% 0%
Conditions Fog Clear Clear Clear
Sunrise & Sunset
5:50 AM
8:22 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.70], Average RMSE [2.36]
The National Weather Service forecast quality is poor. MaxT RMSE [3.71], Average RMSE [2.21] : Use NWS
Source: BestForecast at 1:16 AM PDT on May 25, 2012
Descriptive Forecast
Thursday
clear Clear. High of 82F. Winds from the WNW at 5 to 10 mph.
Thursday Night
nt_clear Clear. Low of 52F. Winds from the West at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 54 | 49 74 | 56 75 | 54 56 | 50
Wind 3 mph West 7 mph WNW 9 mph WNW 4 mph WNW
Humidity 84% 53% 49% 80%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% 0% 0% 0%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:50 AM
8:22 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.28], Average RMSE [1.87]
Source: BestForecast at 1:16 AM PDT on May 25, 2012
Descriptive Forecast
Friday
clear Clear. High of 77F. Winds from the West at 5 to 10 mph.
Friday Night
nt_clear Clear. Low of 52F. Winds from the West at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 54 | 49 72 | 56 70 | 54 57 | 51
Wind 4 mph West 6 mph West 10 mph West 9 mph West
Humidity 83% 57% 55% 80%
Chance of Precip. 0% 0% 0% 10%
Cloud Cover 0% 4% 2% 5%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:50 AM
8:22 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [3.73], Average RMSE [1.92]
Source: BestForecast at 1:16 AM PDT on May 25, 2012
Descriptive Forecast
Saturday
clear Clear. High of 75F. Winds from the WNW at 5 to 15 mph.
Saturday Night
nt_clear Clear. Low of 50F. Winds from the WNW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 54 | 51 69 | 55 69 | 51 53 | 47
Wind 7 mph West 8 mph WNW 13 mph WNW 9 mph WNW
Humidity 88% 58% 52% 81%
Chance of Precip. 10% 0% 0% 0%
Cloud Cover 6% 7% 8% 6%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:50 AM
8:22 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [3.67], Average RMSE [2.18]
Source: BestForecast at 1:16 AM PDT on May 25, 2012
Descriptive Forecast
Sunday
clear Clear. High of 73F. Winds from the WNW at 5 to 20 mph.
Sunday 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 52 | 49 68 | 59 68 | 53 53 | 45
Wind 8 mph WNW 10 mph WNW 16 mph WNW 11 mph WNW
Humidity 86% 71% 60% 72%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 4% 2% 0% 1%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:50 AM
8:22 PM
Source: BestForecast at 1:16 AM PDT on May 25, 2012
Descriptive Forecast
Monday
clear Clear. High of 75F. Winds from the WNW at 5 to 20 mph.
Monday Night
nt_clear Clear. Low of 50F. Winds from the WNW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 52 | 46 69 | 58 69 | 53 55 | 47
Wind 8 mph WNW 9 mph WNW 15 mph WNW 10 mph WNW
Humidity 80% 67% 57% 71%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 1% 1% 1% %
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:50 AM
8:22 PM
Scientific Forecaster Discussion — MOS Weather Graph
Nearby
History & Almanac
May 25, 2012 Max Temp Min Temp
Normal (KSQL) 76 °F 49 °F
Record (KSQL) 99 °F (1982) 40 °F (1980)
Yesterday 69.1 °F 46.8 °F
Choose a date
Earthquake Activity
City Distance Mag. Time & Date
No recent earthquake activity has been reported nearby.
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
OZONE
Current Good
PM2.5
Friday Good
OZONE
Saturday Good
OZONE
Sunday Good
OZONE
Monday Good
OZONE
Tuesday Good
OZONE
Coastal Water Temperatures
Place Temperature
San Francisco, CA 53.1 °F
Port Chicago, CA 63.0 °F
Marine Forecast
Astronomy
May. 25, 2012 Rise Set
Actual Time 5:52 AM PDT 8:19 PM PDT
Civil Twilight 5:22 AM PDT 8:49 PM PDT
Nautical Twilight 4:45 AM PDT 9:27 PM PDT
Astronomical Twilight 4:04 AM PDT 10:08 PM PDT
Moon 9:55 AM PDT No Moon Set
Length Of Visible Light 15h 27m
Length of Day
14h 27m
Tomorrow will be 1m 17s longer.
Waxing Crescent, 19% of the Moon is Illuminated
Today
Waxing Crescent
May 28
First Quarter
Jun 4
Full
Jun 11
Last Quarter
Jun 19
New
Visit Astronomy
Today's Extremes
State Highs State Lows
82 °F
Needles
75 °F
Blythe
72 °F
Palm Springs
72 °F
Thermal
71 °F
Twentynine Palms
32 °F
Weaverville
32 °F
Blue Canyon
32 °F
Truckee-Tahoe
35 °F
Alturas
35 °F
Mount Shasta
Record Extremes
Snow Depth
Station Depth Elevation
Blue Lakes 1 in 8000 ft
Carson Pass 0 in 8500 ft
Forestdale Creek 1 in 8029 ft
Ebbetts Pass 0 in 8700 ft
Leavitt Lake 19 in 9400 ft
Snow Depth Reports — Snow Depth Map
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Travel & Activities
Travel Planning
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Nearby Events
Event Date Forecast
Stanford Cardinal vs. California Golden Bears 5:00 PM PDT 2012-05-25 Thunderstorm, 59°F
Wonderful World By Richard Dresser 8:00 PM PDT 2012-05-25 Thunderstorm, 59°F
Gypsy Tribe 9:00 PM PDT 2012-05-25 Thunderstorm, 57°F
Fanny Retsek, Drawings and Prints 9:00 AM PDT 2012-05-25 Chance of Rain, 55°F
Monterey Age Group Open Meet 7:00 AM PDT 2012-05-25 Chance of Rain, 53°F
New Member Orientation 6:00 PM PDT 2012-05-25 Thunderstorm, 59°F
Event data courtesy eviesays.com
Aviation
City Temp. Conditions Updated
San Carlos 50 °F Scattered Clouds 6:10 AM PDT
Palo Alto This station is not reporting.
Moffett NAS 51 °F Light Rain 5:56 AM PDT
San Francisco 50 °F Mostly Cloudy 5:56 AM PDT
View all Aviation Tools
Flight To ETA Status
SKW5484
Boise, ID 		KSFO 06:19AM On Time
SKW5369
Reno, NV 		KSFO 06:20AM On Time
SKW5309
Sacramento, CA 		KSFO 06:21AM On Time
SKW5430
Monterey, CA 		KSFO 06:24AM On Time
Flight Tracker by FlightAware FlightAware
View U.S. Airport Delays
Type Condition
Flight Rule: VFR (KSQL)
Wind Speed: 17.0 kts.
Wind Dir: 53° (NE)
Ceiling: Unlimited

METAR KSQL 251310Z AUTO 30017G22KT 10SM SCT019 10/05 A2976 RMK AO2

View all Reports & Maps
Sports
Event Date Forecast
Royals vs. Orioles 7:05 PM EDT on May 25, 2012 Clear, 79 °F
Cubs vs. Pirates 7:05 PM EDT on May 25, 2012 Chance of a Thunderstorm, 81 °F
Yankees vs. Athletics 7:05 PM PDT on May 25, 2012 Partly Cloudy, 56 °F
Yankees vs. Athletics 1:05 PM PDT on May 26, 2012 Partly Cloudy, 58 °F
Event Date Forecast
Athletic vs. Barcelona 12:00 PM CEST on May 25, 2012 Scattered Clouds, High 86° F/ 30° C
Barcelona vs. Athletic 10:00 PM CEST on May 25, 2012 Scattered Clouds, High 86° F/ 30° C
Event Date Forecast
Coca-Cola 600 6:16 PM EDT on May 27, 2012 Chance of a Thunderstorm, 81 °F
FedEx 400 benefiting Autism Speaks 1:15 PM EDT on June 03, 2012 Average High 79° F/ 26° C
Event Date Forecast
Crowne Plaza Invitational at Colonial 8:30 AM CDT on May 25, 2012 Overcast, 74 °F
Crowne Plaza Invitational at Colonial 8:30 AM CDT on May 26, 2012 Mostly Cloudy, 74 °F
View all Sports Weather
Weather Stations
Station Location Temp. Windchill Dew Point Humidity Wind Precipitation Elevation Updated Type Website
Atherton, CA 50.3 °F - 42 °F 72% NE  at  0.0 mph 0.00 in / hr 53 ft 6:20 AM PDT Normal  
APRSWXNET Atherton CA , Atherton, CA 50 °F 48 °F 42 °F 75% NW  at  5 mph 0.00 in / hr 49 ft 6:02 AM PDT MADIS
APRSWXNET W.Menlo Park CA, Menlo Park, CA 52 °F - 41 °F 67% NW  at  3 mph 0.00 in / hr 115 ft 6:00 AM PDT MADIS
Beresford Ave, Redwood City, CA 51.6 °F - 40 °F 69% NNW  at  6.7 mph 0.00 in / hr 66 ft 6:27 AM PDT Normal
MesoWest Stanford University , Menlo Park, CA 49 °F 49 °F 40 °F 72% North  at  - 0.00 in / hr 118 ft 5:00 AM PDT MADIS
SLAC's Campus, Menlo Park, CA 49.6 °F 46 °F 25 °F 38% NNW  at  8.3 mph 0.00 in / hr 0 ft 6:33 AM PDT Rapid Fire  
Sterling Heights, Redwood City, CA 49.6 °F 46 °F 19 °F 30% North  at  9.0 mph 0.00 in / hr 134 ft 6:33 AM PDT Rapid Fire  
Stulsaft Park, Redwood City, CA 50.0 °F - 41 °F 72% North  at  0.0 mph 0.00 in / hr 233 ft 6:33 AM PDT Rapid Fire  
Redwood City Hills, Redwood City, CA 51.1 °F - 41 °F 68% WNW  at  17.0 mph 0.00 in / hr 170 ft 6:33 AM PDT Normal  
College Terrace, Palo Alto, CA 50.1 °F - 42 °F 74% West  at  1.0 mph 0.00 in / hr 43 ft 6:31 AM PDT Normal  
Woodside Glens, Woodside, CA 50.0 °F - 43 °F 76% NE  at  2.0 mph 0.00 in / hr 381 ft 6:25 AM PDT Normal  
Evergreen Park, Palo Alto, CA 50.0 °F - 41 °F 72% North  at  0.0 mph 0.00 in / hr 35 ft 6:31 AM PDT Normal  
Palo Alto Park, East Palo Alto, CA 51.1 °F - 44 °F 77% South  at  4.5 mph 0.00 in / hr 20 ft 6:32 AM PDT Rapid Fire  
Canyon Rd. Redwood City, CA, Redwood City, CA 50.0 °F 46 °F 46 °F 87% NNW  at  10.7 mph - / hr 0 ft 6:30 AM PDT Normal  
Old Palo Alto (Waverley St), Palo Alto, CA 50.3 °F - 41 °F 69% NNW  at  2.7 mph 0.00 in / hr 57 ft 6:33 AM PDT Rapid Fire
Woodside, Woodside, CA 48.9 °F 49 °F 41 °F 74% SSW  at  1.0 mph 0.00 in / hr 375 ft 6:32 AM PDT Normal  
Edgewood Park, Redwood City, CA 50.7 °F - 42 °F 73% West  at  4.3 mph 0.00 in / hr 53 ft 6:32 AM PDT Normal  
Lower Hillcrest, Emerald Hills, CA 48.2 °F 48 °F 42 °F 78% North  at  0.0 mph 0.00 in / hr 535 ft 6:32 AM PDT Rapid Fire  
Centennial, Redwood City, CA 50.9 °F - 44 °F 76% ESE  at  5.0 mph 0.00 in / hr 10 ft 6:30 AM PDT Normal
Sunset Way, Emerald Hills, CA 46.9 °F 42 °F 42 °F 82% West  at  12.0 mph 0.00 in / hr 748 ft 6:30 AM PDT Normal
Emerald Hills, Redwood City, CA 49.1 °F 43 °F 39 °F 68% WNW  at  19.0 mph 0.00 in / hr 790 ft 6:28 AM PDT Normal
White Oaks, San Carlos, CA 50.0 °F 46 °F 42 °F 75% NW  at  10.0 mph 0.00 in / hr 52 ft 6:32 AM PDT Normal  
Palo Alto (Midtown), Palo Alto, CA 50.2 °F - 42 °F 73% NW  at  19.6 mph 0.00 in / hr 15 ft 6:33 AM PDT Rapid Fire  
Portola Valley, Portola Valley, CA 55.2 °F - - - WNW  at  0.0 mph 0.00 in / hr 764 ft 6:27 AM PDT Normal  
Alpine Hills, Portola Valley, CA 49.5 °F 50 °F 42 °F 77% WNW  at  1.6 mph 0.00 in / hr 690 ft 6:22 AM PDT Normal  
Barron Park, Palo Alto, CA 49.8 °F 48 °F 40 °F 69% SW  at  4.7 mph 0.00 in / hr 40 ft 6:33 AM PDT Rapid Fire  
Central Portola Valley, Portola Valley, CA 47.3 °F 47 °F 39 °F 74% WNW  at  2.0 mph 0.00 in / hr 660 ft 6:09 AM PDT Normal
Midtown, Palo Alto, CA 51.4 °F - 38 °F 61% SSW  at  3.0 mph - / hr 7 ft 6:32 AM PDT Rapid Fire  
Palo Verde, Palo Alto, CA 50.1 °F - 43 °F 76% NW  at  10.0 mph 0.00 in / hr 12 ft 2:33 AM WST Rapid Fire  
Walnut Grove, Palo Alto, CA 51.2 °F - 44 °F 75% SW  at  2.0 mph 0.00 in / hr 36 ft 6:30 AM PDT Normal  
MesoWest San Carlos , Redwood City, CA 50 °F 45 °F 41 °F 72% WNW  at  13 mph 0.00 in / hr 0 ft 5:00 AM PDT MADIS
Beverly Terrace, San Carlos, CA 46.4 °F 41 °F 42 °F 84% West  at  12.0 mph 0.00 in / hr 812 ft 6:32 AM PDT Normal  
RAWS PULGAS CA, Half Moon Bay, CA 47 °F 40 °F 38 °F 71% West  at  18 mph 0.00 in / hr 644 ft 5:38 AM PDT MADIS
APRSWXNET Los Altos Hills CA , Los Altos, CA 48 °F 48 °F 39 °F 70% NNW  at  3 mph 0.00 in / hr 62 ft 6:03 AM PDT MADIS
Skywood, Woodside, CA 43.7 °F 44 °F 39 °F 84% SE  at  0.0 mph 0.00 in / hr 1453 ft 6:30 AM PDT Normal  
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Special Statement
Mobile & Email Alerts Statement as of 10:01 PM PDT on May 24, 2012

... Much cooler with a chance of showers and isolated thunderstorms Friday...

An unseasonably cold weather system will rapidly approach the Bay
area overnight... arriving by Friday morning. Rain showers
currently associated with this system are being reported in
southern Oregon with radars west of Cape Mendocino starting to
pick up returns. The main impact of the system will be cool
temperatures and a continuation of the breezy to locally windy
weather we've been having the last few days.

Skies will start out sunny but with cold morning temperatures in
the upper 30s and 40s for many portions of the Bay area. By
mid-morning the core of the system will pass overhead with very
unstable air aloft. This will allow for cumulus cloud development
over the hills of the Bay area. Rain showers will be possible
through the afternoon hours... especially over the hills but its
possible that any showers could drift over the valleys. Anybody
with outdoor interests such as camping our hiking on Friday should
be prepared for unseasonably cool... possibly wet and windy weather.

Finally... the latest computer model projections have been
consistent in showing an above average chance of thunderstorms
over the far eastern portions of our district... roughly running
southward form the hills of Napa County through the far East Bay
valleys and continuing southward over the higher and mostly
unpopulated areas of Santa Clara and San Benito counties. These
far eastern counties of the Bay area will have the best chance for
seeing thunderstorms roughly from 2 PM to 7 PM Friday afternoon
and evening. Freezing levels will drop to around 6000 feet so ice
pellets and small hail will be possible in some of the heavier
cells along with dangerous cloud to ground lightning.

Any hail that falls on roads can quickly lead to traffic
accidents... especially on the get away Friday of a three day
Holiday weekend. The National Weather Service and California
Highway patrol urge motorists to slow down and stay abreast of the
latest forecast information before heading out this Holiday
weekend. As a reminder... folks heading to the Sierra should expect
winter weather conditions Friday night into Saturday with snow
over the trans-Sierra passes. There are currently snow advisories
in effect for that West Slope of the Sierra until 6 PM Friday.

Http://weather.Gov/sanfrancisco


R walbrun