Oakley, CA

3:57 AM PDT on May 25, 2012 (GMT -0700)
Elev: 23 ft
Lon: 121.7° W
Lat: 38.0° 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

Oakley Weather at a Glance

Updated 3:57 AM PDT
Elevation
30 ft
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Now
Clear
Clear
Temperature
52.0 °F
Feels Like 52.0 °F
Wind(mph)
3.1
Sunrise / Set
5:48 AM
8:19 PM
Moon
Waxing Crescent
Tonight
Clear 52 °F
Clear
Friday
Thunderstorm 73 °F
T-storms
20% chance of precipitation
Friday Night
Thunderstorm 54 °F
T-storms
20% chance of precipitation
Saturday
Partly Cloudy 79 | 50 °F
Partly Cloudy
Sunday
Partly Cloudy 84 | 54 °F
Partly Cloudy
Monday
Clear 73 | 48 °F
Clear
Today is forecast to be Much Cooler than yesterday.
Conditions
Pressure
29.68 in
Visibility
10.0 miles
Clouds
Clear -
Moisture
Humidity
62%
Rainfall
0.00 in
Snow Depth
Not available.
METAR
METAR KCCR 250953Z 28013G18KT 10SM CLR 11/03 A2972 RMK AO2 SLP051 T01060033
Don't speak METAR? Read our FAQ.
Weather Radio
Launch Weather Radio
Temperature
Temperature
52.0 °F
Dew Point
39 °F
Wind
Speed / Dir
3.1 mph from SW
Wind Gust
18.3 mph
Health
UV
0 out of 16
Pollen
7.60 out of 12
Pollen Forecast
Ozone
Good
Flu Activity
Local Activity
View Flu Map
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Source: BestForecast
Descriptive Forecast
Friday
tstorms Mostly cloudy with thunderstorms and a chance of rain. High of 73F. Breezy. Winds from the West at 15 to 20 mph. Chance of rain 20%.
Friday Night
nt_tstorms Mostly cloudy with thunderstorms and a chance of rain in the evening, then partly cloudy. Low of 54F. Winds from the WSW at 5 to 15 mph. Chance of rain 20%.
Saturday
partlycloudy Partly cloudy in the morning, then clear. High of 79F. Winds from the SW at 5 to 15 mph.
Saturday Night
nt_partlycloudy Partly cloudy. Low of 50F. Winds from the WSW at 5 to 15 mph.
Sunday
partlycloudy Partly cloudy in the morning, then clear. High of 84F. Winds from the West at 5 to 15 mph.
Sunday Night
nt_clear Clear. Low of 54F. Winds from the WSW at 5 to 10 mph.
Monday
clear Clear. High of 73F. Winds from the WSW at 5 to 15 mph.
Monday Night
nt_clear Clear. Low of 48F. Winds from the WSW at 5 to 15 mph.
Tuesday
clear Clear. High of 79F. Winds from the West at 5 to 10 mph.
Tuesday Night
nt_mostlycloudy Mostly cloudy. Low of 48F. Winds from the WSW at 5 to 10 mph.
Wednesday
clear Clear. High of 88F. Winds from the West at 5 to 10 mph.
Wednesday Night
nt_clear Clear. Low of 59F. Winds from the WSW at 5 to 10 mph.
Thursday
clear Clear. High of 88F. Winds from the West at 5 to 10 mph.
Thursday Night
nt_clear Clear. Low of 59F. Winds from the WSW at 5 to 10 mph.
Friday
clear Clear. High of 88F. Winds from the West at 5 to 10 mph.
Friday Night
nt_clear Clear. Low of 57F. Winds from the WSW at 5 to 10 mph.
Saturday
clear Clear. High of 86F. Winds from the West at 5 to 15 mph.
Saturday Night
nt_clear Clear. Low of 52F. Winds from the West at 5 to 15 mph.
Sunday
clear Clear. High of 84F. Winds from the WNW at 5 to 15 mph.
Sunday Night
nt_clear Clear. Low of 52F. Winds from the West at 5 to 15 mph.
Monday
clear Clear. High of 86F. Winds from the WNW at 5 to 15 mph.
Monday Night
nt_clear Clear. Low of 52F. Winds from the West at 5 to 10 mph.
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Updated:  
 
 

 

Forecast

View Calendar 10-Day Forecast for station KCAOAKLE6

Friday, 25
Thunderstorm
73 | 54 °F
T-storms
Chance of
Precipitation
20%
Saturday, 26
Partly Cloudy
79 | 50 °F
Partly Cloudy
Chance of
Precipitation
0%
Sunday, 27
Partly Cloudy
84 | 54 °F
Partly Cloudy
Chance of
Precipitation
0%
Monday, 28
Clear
73 | 48 °F
Clear
Chance of
Precipitation
0%
Tuesday, 29
Clear
79 | 48 °F
Clear
Chance of
Precipitation
0%
Wednesday, 30
Clear
88 | 59 °F
Clear
Chance of
Precipitation
0%
Thursday, 31
Clear
88 | 59 °F
Clear
Chance of
Precipitation
0%
Friday, 1
Clear
88 | 57 °F
Clear
Chance of
Precipitation
0%
Saturday, 2
Clear
86 | 52 °F
Clear
Chance of
Precipitation
0%
Sunday, 3
Clear
84 | 52 °F
Clear
Chance of
Precipitation
0%
Source: BestForecast at 1:16 AM PDT on May 25, 2012
Descriptive Forecast
Friday
tstorms Mostly cloudy with thunderstorms and a chance of rain. High of 73F. Breezy. Winds from the West at 15 to 20 mph. Chance of rain 20%.
Friday Night
nt_tstorms Mostly cloudy with thunderstorms and a chance of rain in the evening, then partly cloudy. Low of 54F. Winds from the WSW at 5 to 15 mph. Chance of rain 20%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 56 | 37 66 | 35 70 | 32 62 | 51
Wind 19 mph West 14 mph WNW 15 mph West 9 mph West
Humidity 48% 32% 24% 65%
Chance of Precip. 20% 20% 20% 10%
Cloud Cover 64% 77% 80% 31%
Conditions Chance of Rain Thunderstorm Thunderstorm Partly Cloudy
Sunrise & Sunset
5:48 AM
8:19 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [2.04], Average RMSE [2.98]
The National Weather Service forecast quality is good. MaxT RMSE [2.02], Average RMSE [2.51] : Use NWS
Source: BestForecast at 1:16 AM PDT on May 25, 2012
Descriptive Forecast
Saturday
partlycloudy Partly cloudy in the morning, then clear. High of 79F. Winds from the SW at 5 to 15 mph.
Saturday Night
nt_partlycloudy Partly cloudy. Low of 50F. Winds from the WSW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 58 | 47 74 | 48 72 | 44 58 | 52
Wind 8 mph SW 8 mph SW 13 mph WSW 9 mph WSW
Humidity 67% 40% 36% 76%
Chance of Precip. 10% 10% 0% 0%
Cloud Cover 51% 4% 20% 34%
Conditions Partly Cloudy Clear Clear Partly Cloudy
Sunrise & Sunset
5:48 AM
8:19 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.54], Average RMSE [3.24]
The National Weather Service forecast quality is good. MaxT RMSE [2.38], Average RMSE [2.71] : 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 84F. Winds from the West at 5 to 15 mph.
Sunday Night
nt_clear Clear. Low of 54F. Winds from the WSW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 55 | 45 75 | 46 80 | 38 62 | 49
Wind 8 mph WSW 8 mph West 12 mph West 8 mph WSW
Humidity 68% 35% 23% 62%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 52% 11% 14% 0%
Conditions Partly Cloudy Clear Clear Clear
Sunrise & Sunset
5:47 AM
8:20 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [3.68], Average RMSE [3.74]
The National Weather Service forecast quality is fair. MaxT RMSE [2.81], Average RMSE [2.99] : Use NWS
Source: BestForecast at 1:16 AM PDT on May 25, 2012
Descriptive Forecast
Monday
clear Clear. High of 73F. Winds from the WSW at 5 to 15 mph.
Monday Night
nt_clear Clear. Low of 48F. Winds from the WSW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 58 | 48 71 | 46 68 | 41 55 | 46
Wind 7 mph WSW 8 mph WSW 12 mph WSW 7 mph WSW
Humidity 74% 42% 39% 72%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 2% 0% 0% 0%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:47 AM
8:21 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.96], Average RMSE [4.13]
The National Weather Service forecast quality is fair. MaxT RMSE [2.95], Average RMSE [3.19] : Use NWS
Source: BestForecast at 1:16 AM PDT on May 25, 2012
Descriptive Forecast
Tuesday
clear Clear. High of 79F. Winds from the West at 5 to 10 mph.
Tuesday Night
nt_mostlycloudy Mostly cloudy. Low of 48F. Winds from the WSW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 53 | 45 76 | 41 73 | 43 55 | 45
Wind 5 mph WSW 5 mph WNW 9 mph West 8 mph WSW
Humidity 71% 28% 35% 68%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 2% 0% 0% 100%
Conditions Clear Clear Clear Overcast
Sunrise & Sunset
5:46 AM
8:22 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [3.94], Average RMSE [3.99]
The National Weather Service forecast quality is poor. MaxT RMSE [3.53], Average RMSE [3.45] : Use NWS
Source: BestForecast at 1:16 AM PDT on May 25, 2012
Descriptive Forecast
Wednesday
clear Clear. High of 88F. Winds from the West at 5 to 10 mph.
Wednesday Night
nt_clear Clear. Low of 59F. Winds from the WSW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 56 | 44 79 | 44 84 | 45 66 | 51
Wind 6 mph WSW 5 mph WNW 9 mph West 7 mph WSW
Humidity 64% 30% 25% 59%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 2% 0% 0% 0%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:46 AM
8:22 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.86], Average RMSE [4.76]
The National Weather Service forecast quality is poor. MaxT RMSE [4.18], Average RMSE [3.54] : Use NWS
Source: BestForecast at 1:16 AM PDT on May 25, 2012
Descriptive Forecast
Thursday
clear Clear. High of 88F. Winds from the West at 5 to 10 mph.
Thursday Night
nt_clear Clear. Low of 59F. Winds from the WSW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 63 | 49 79 | 42 80 | 34 68 | 52
Wind 6 mph WSW 5 mph WNW 8 mph West 8 mph WSW
Humidity 62% 26% 19% 57%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% 0% 0% 0%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:46 AM
8:22 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.37], Average RMSE [3.96]
Source: BestForecast at 1:16 AM PDT on May 25, 2012
Descriptive Forecast
Friday
clear Clear. High of 88F. Winds from the West at 5 to 10 mph.
Friday Night
nt_clear Clear. Low of 57F. Winds from the WSW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 64 | 49 81 | 51 82 | 51 64 | 50
Wind 6 mph WSW 5 mph West 10 mph West 8 mph WSW
Humidity 60% 34% 31% 58%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% 0% 0% 2%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:46 AM
8:22 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [3.72], Average RMSE [4.64]
Source: BestForecast at 1:16 AM PDT on May 25, 2012
Descriptive Forecast
Saturday
clear Clear. High of 86F. Winds from the West at 5 to 15 mph.
Saturday 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 65 | 53 79 | 47 80 | 43 62 | 51
Wind 6 mph WSW 6 mph West 11 mph West 7 mph West
Humidity 65% 32% 28% 66%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 5% 6% 8% 7%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:46 AM
8:22 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.46], Average RMSE [4.39]
Source: BestForecast at 1:16 AM PDT on May 25, 2012
Descriptive Forecast
Sunday
clear Clear. High of 84F. Winds from the WNW at 5 to 15 mph.
Sunday 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 62 | 57 77 | 63 78 | 58 62 | 51
Wind 5 mph WSW 7 mph WNW 12 mph WNW 7 mph West
Humidity 85% 64% 49% 66%
Chance of Precip. 0% 0% 0% 10%
Cloud Cover 5% 3% 1% 2%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:46 AM
8:22 PM
Source: BestForecast at 1:16 AM PDT on May 25, 2012
Descriptive Forecast
Monday
clear Clear. High of 86F. Winds from the WNW at 5 to 15 mph.
Monday 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 62 | 56 77 | 62 79 | 58 62 | 50
Wind 5 mph West 6 mph WNW 11 mph WNW 7 mph West
Humidity 77% 59% 46% 65%
Chance of Precip. 10% 0% 0% 0%
Cloud Cover 2% 2% 1% %
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:46 AM
8:22 PM
Scientific Forecaster Discussion — MOS Weather Graph
Nearby
History & Almanac
May 25, 2012 Max Temp Min Temp
Normal (KCCR) 80 °F 53 °F
Record (KCCR) 91 °F (2005) 48 °F (2010)
Yesterday 76 °F 52 °F
Yesterday's Heating Degree Days: 1
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
Current Good
OZONE
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 5:48 AM PDT 8:19 PM PDT
Civil Twilight 5:18 AM PDT 8:49 PM PDT
Nautical Twilight 4:40 AM PDT 9:27 PM PDT
Astronomical Twilight 3:59 AM PDT 10:09 PM PDT
Moon 9:52 AM PDT 11:59 PM PDT
Length Of Visible Light 15h 30m
Length of Day
14h 30m
Tomorrow will be 1m 18s longer.
Waxing Crescent, 18% 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
Truckee-Tahoe
35 °F
Weaverville
35 °F
Blue Canyon
36 °F
Mount Shasta
37 °F
Alturas
Record Extremes
Snow Depth
Station Depth Elevation
Blue Lakes 1 in 8000 ft
Forestdale Creek 1 in 8029 ft
Rubicon #2 1 in 7500 ft
Ebbetts Pass 0 in 8700 ft
Burnside Lake 1 in 8139 ft
Snow Depth Reports — Snow Depth Map
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Travel & Activities
Travel Planning
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Nearby Events
Event Date Forecast
The 39 Steps (Nick Rodriguez, Antioch) 8:00 PM PDT 2012-05-25 Thunderstorm, 63°F
The 39 Steps (Nick Rodriguez, Antioch) 2:00 PM PDT 2012-05-26 Clear, 68°F
The 39 Steps (Nick Rodriguez, Antioch) 8:00 PM PDT 2012-05-26 Clear, 63°F
The 39 Steps (Nick Rodriguez, Antioch) 3:00 PM PDT 2012-05-27 Clear, 71°F
Cap's Comedy Night w/Darren Carter 9:00 PM PDT 2012-06-01 Clear, 65°F
Event data courtesy eviesays.com
Aviation
City Temp. Conditions Updated
Concord 51 °F Clear 2:53 AM PDT
Livermore 50 °F Clear 2:53 AM PDT
Fairfield 49 °F Clear 3:55 AM PDT
Stockton 51 °F Blowing Widespread Dust 2:55 AM PDT
View all Aviation Tools
Flight To ETA Status
No flights were found.
Flight Tracker by FlightAware FlightAware
View U.S. Airport Delays
Type Condition
Flight Rule: VFR (KCCR)
Wind Speed: 13.0 kts.
Wind Dir: 236° (SW)
Ceiling: Unlimited

METAR KCCR 250953Z 28013G18KT 10SM CLR 11/03 A2972 RMK AO2 SLP051 T01060033

View all Reports & Maps
Sports
Event Date Forecast
Royals vs. Orioles 7:05 PM EDT on May 25, 2012 Partly Cloudy, 81 °F
Cubs vs. Pirates 7:05 PM EDT on May 25, 2012 Chance of a Thunderstorm, 81 °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, 85 °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, 72 °F
View all Sports Weather
Weather Stations
Station Location Temp. Windchill Dew Point Humidity Wind Precipitation Elevation Updated Type Website
Big Lukes Roof Top Weather, Oakley, CA 52.0 °F - 39 °F 62% SW  at  3.1 mph 0.00 in / hr 30 ft 3:57 AM PDT Rapid Fire
W6ONV, Oakley, CA 51.9 °F - 38 °F 58% West  at  13.0 mph 0.00 in / hr 10 ft 3:57 AM PDT Rapid Fire
MesoWest Bethel Island Road , Bethel Island, CA 52 °F - 39 °F 60% West  at  19 mph 0.00 in / hr 20 ft 2:00 AM PDT MADIS
Mr. Big's WX, Brentwood, CA 51.6 °F - 40 °F 64% West  at  8.0 mph 0.00 in / hr 29 ft 3:55 AM PDT Normal  
APRSWXNET Brentwood CA , Brentwood, CA 50 °F - 38 °F 64% West  at  1 mph 0.00 in / hr 203 ft 3:34 AM PDT MADIS
Ridgerock, Antioch, CA 50.8 °F - 38 °F 62% WSW  at  13.0 mph 0.00 in / hr 136 ft 3:03 AM PDT Rapid Fire  
Brentwood Hills-live since '07, Brentwood, CA 50.1 °F - 38 °F 64% West  at  11.0 mph 0.00 in / hr 23 ft 3:57 AM PDT Rapid Fire
APRSWXNET Antioch CA , Antioch, CA 50 °F 46 °F 37 °F 61% WSW  at  11 mph 0.00 in / hr 243 ft 3:31 AM PDT MADIS
Randy's Antioch Weather Station, Antioch, CA 50.7 °F - 36 °F 57% WSW  at  13.0 mph 0.00 in / hr 89 ft 3:55 AM PDT Normal
Pittsburg, CA (Marina), Pittsburg, CA 51.5 °F - 40 °F 65% SW  at  7.0 mph 0.00 in / hr 10 ft 3:41 AM PDT Normal  
Top of Woodland Hills, Pittsburg, CA 52.0 °F - 34 °F 50% West  at  13.8 mph 0.00 in / hr 300 ft 3:57 AM PDT Rapid Fire  
Pittsburg's Delta View Golf Course, Pittsburg, CA 50.4 °F - 33 °F 51% WSW  at  9.4 mph 0.00 in / hr 200 ft 3:57 AM PDT Rapid Fire
MesoWest Rio Vista , Rio Vista, CA 54 °F - 41 °F 60% WSW  at  15 mph 0.00 in / hr 36 ft 12:00 AM PDT MADIS
East Concord, Concord, CA 48.4 °F 48 °F 39 °F 71% West  at  0.0 mph 0.00 in / hr 362 ft 3:54 AM PDT Normal  
Claycord, Concord, CA 48.0 °F 48 °F 38 °F 69% NW  at  1.0 mph 0.00 in / hr 292 ft 3:57 AM PDT Rapid Fire  
Dana Estates, Concord, CA 53.1 °F - 40 °F 62% SSW  at  0.0 mph - / hr 155 ft 3:56 AM PDT Normal
Pentozzi Treat & Cowell, Concord, CA 49.8 °F 50 °F 37 °F 62% West  at  0.0 mph 0.00 in / hr 250 ft 3:57 AM PDT Rapid Fire  
APRSWXNET Blackhawk CA, Danville, CA 47 °F 43 °F 41 °F 78% WNW  at  8 mph 0.00 in / hr 816 ft 3:29 AM PDT MADIS
Creston Park, Mountain House, CA 50.5 °F - 39 °F 65% WSW  at  5.1 mph 0.00 in / hr 56 ft 3:57 AM PDT Rapid Fire  
APRSWXNET Diablo CA , Diablo, CA 46 °F 46 °F 38 °F 74% West  at  1 mph 0.00 in / hr 853 ft 3:08 AM PDT MADIS
Hidden Hills Estates, Danville, CA 49.0 °F 49 °F 39 °F 68% South  at  1.6 mph 0.00 in / hr 709 ft 3:57 AM PDT Rapid Fire  
Woodlands, Walnut Creek, CA 50.0 °F - 36 °F 59% NW  at  0.0 mph 0.00 in / hr 68 ft 3:55 AM PDT Normal
Silver Oaks, Stockton, CA 53.1 °F - 42 °F 66% NW  at  5.4 mph 0.00 in / hr 3 ft 3:57 AM PDT Rapid Fire  
K6TPK, Concord, CA 50.9 °F - 33 °F 50% ENE  at  5.4 mph 0.00 in / hr 23 ft 3:57 AM PDT Rapid Fire
Concord, CA 51.2 °F - 35 °F 54% West  at  1.2 mph 0.00 in / hr 80 ft 3:52 AM PDT Normal  
The Landing, Stockton, CA 51.2 °F - 40 °F 66% South  at  3.1 mph - / hr 7 ft 3:57 AM PDT Rapid Fire
EBRC Field, Livermore, CA 48.9 °F 44 °F 17 °F 28% SW  at  12.5 mph 0.00 in / hr 645 ft 3:57 AM PDT Normal
RAWS LOS VAQUEROS CA, Livermore, CA 46 °F 38 °F 41 °F 81% WSW  at  23 mph 0.00 in / hr 1100 ft 2:45 AM PDT MADIS
RAWS BLACK DIAMOND CA, Clayton, CA 43 °F 35 °F 37 °F 79% West  at  19 mph 0.00 in / hr 1600 ft 3:28 AM PDT MADIS
RAWS MALLORY RIDGE CA, Danville, CA 41 °F 33 °F 38 °F 88% West  at  17 mph 0.00 in / hr 1948 ft 3:02 AM PDT MADIS
RAWS MT. DIABLO CA, Clayton, CA 34 °F 20 °F 34 °F 99% WNW  at  31 mph 0.00 in / hr 3849 ft 3:17 AM PDT MADIS
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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