Danville, CA

11:23 PM PDT on May 24, 2012 (GMT -0700)
Elev: 669 ft
Lon: 121.9° W
Lat: 37.8° N
Source
Rapid Fire Updates™
 Updated 10:58 PM PDT Get Free Weather Stickers® Share:
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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

Danville Weather at a Glance

Updated 10:58 PM PDT
Elevation
816 ft
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Now
Clear
Clear
Temperature
51 °F
Feels Like 51 °F
Wind(mph)
2
Sunrise / Set
5:50 AM
8:18 PM
Moon
Waxing Crescent
Tonight
Clear 46 °F
Clear
Tomorrow
Thunderstorm 68 °F
T-storms
20% chance of precipitation
Tomorrow Night
Thunderstorm 50 °F
T-storms
20% chance of precipitation
Saturday
Partly Cloudy 70 | 48 °F
Partly Cloudy
Sunday
Partly Cloudy 72 | 50 °F
Partly Cloudy
Monday
Partly Cloudy 68 | 46 °F
Partly Cloudy
Tomorrow is forecast to be Cooler than today.
Conditions
Pressure
29.74 in
Visibility
10.0 miles
Clouds
Clear -
Moisture
Humidity
71%
Rainfall
0.00 in
Snow Depth
Not available.
METAR
METAR KLVK 250553Z AUTO 20011KT 10SM CLR 11/07 A2975 RMK AO2 SLP070 T01110072 10211 20111 51007
Don't speak METAR? Read our FAQ.
Weather Radio
Launch Weather Radio
Temperature
Temperature
51 °F
Dew Point
42 °F
Wind
Speed / Dir
2 mph from WSW
Wind Gust
4.0 mph
Health
UV
0 out of 16
Pollen
6.40 out of 12
Pollen Forecast
Ozone
Good
PM2.5
Good
Flu Activity
Local Activity
View Flu Map
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Source: BestForecast
Descriptive Forecast
Thursday Night
nt_clear Partly cloudy with a chance of rain after midnight. Low of 46F. Breezy. Winds from the WNW at 10 to 20 mph. Chance of rain 20%.
Friday
tstorms Mostly cloudy with thunderstorms and a chance of rain. High of 68F. Winds from the WNW at 10 to 15 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 50F. Winds from the SW at 5 to 10 mph. Chance of rain 20%.
Saturday
partlycloudy Partly cloudy in the morning, then clear. High of 70F. Winds from the SW at 10 to 15 mph.
Saturday Night
nt_partlycloudy Partly cloudy. Low of 48F. Winds from the SW at 5 to 15 mph.
Sunday
partlycloudy Partly cloudy in the morning, then clear. High of 72F. Winds from the WSW at 5 to 15 mph.
Sunday Night
nt_partlycloudy Mostly cloudy in the evening, then overcast. Fog overnight. Low of 50F. Winds from the WSW at 5 to 10 mph.
Monday
partlycloudy Overcast in the morning, then clear. High of 68F. Winds from the WSW at 5 to 10 mph.
Monday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 46F. Winds from the SW at 5 to 10 mph.
Tuesday
partlycloudy Partly cloudy in the morning, then clear. High of 72F. Winds from the WSW at 5 to 10 mph.
Tuesday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 48F. Winds from the SW at 5 to 10 mph.
Wednesday
partlycloudy Clear. High of 82F. Winds from the West at 5 to 10 mph.
Wednesday Night
nt_clear Clear. Low of 52F. Winds from the SW at 5 to 10 mph.
Thursday
clear Clear. High of 84F. Winds from the WSW at 5 to 10 mph.
Thursday Night
nt_clear Clear. Low of 55F. Winds from the SW at 5 to 10 mph.
Friday
clear Clear. High of 82F. Winds from the West at 5 to 15 mph.
Friday Night
nt_clear Clear. Low of 54F. Winds from the WSW at 5 to 15 mph.
Saturday
clear Clear. High of 79F. Winds from the West at 5 to 15 mph.
Saturday Night
nt_clear Partly cloudy. Low of 52F. Winds from the West at 5 to 15 mph.
Sunday
partlycloudy Partly cloudy. High of 77F. Winds from the WNW at 5 to 15 mph.
Sunday Night
nt_clear Clear. Low of 50F. Winds from the West at 5 to 15 mph.
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Forecast

View Calendar 10-Day Forecast for station KCADANVI10

Friday, 25
Thunderstorm
68 | 50 °F
T-storms
Chance of
Precipitation
20%
Saturday, 26
Partly Cloudy
70 | 48 °F
Partly Cloudy
Chance of
Precipitation
10%
Sunday, 27
Partly Cloudy
72 | 50 °F
Partly Cloudy
Chance of
Precipitation
10%
Monday, 28
Partly Cloudy
68 | 46 °F
Partly Cloudy
Chance of
Precipitation
0%
Tuesday, 29
Partly Cloudy
72 | 48 °F
Partly Cloudy
Chance of
Precipitation
0%
Wednesday, 30
Partly Cloudy
82 | 52 °F
Partly Cloudy
Chance of
Precipitation
0%
Thursday, 31
Clear
84 | 55 °F
Clear
Chance of
Precipitation
0%
Friday, 1
Clear
82 | 54 °F
Clear
Chance of
Precipitation
0%
Saturday, 2
Clear
79 | 52 °F
Clear
Chance of
Precipitation
0%
Sunday, 3
Partly Cloudy
77 | 50 °F
Partly Cloudy
Chance of
Precipitation
0%
Source: BestForecast at 7:15 PM PDT on May 24, 2012
Descriptive Forecast
Friday
tstorms Mostly cloudy with thunderstorms and a chance of rain. High of 68F. Winds from the WNW at 10 to 15 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 50F. Winds from the SW at 5 to 10 mph. Chance of rain 20%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 47 | 43 59 | 43 67 | 44 53 | 46
Wind 13 mph WNW 12 mph WNW 10 mph WNW 4 mph WSW
Humidity 83% 52% 44% 78%
Chance of Precip. 20% 20% 20% 10%
Cloud Cover 59% 74% 80% 34%
Conditions Chance of Rain Thunderstorm Thunderstorm Partly Cloudy
Sunrise & Sunset
5:50 AM
8:18 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.88], Average RMSE [1.36]
The National Weather Service forecast quality is fair. MaxT RMSE [2.94], Average RMSE [1.79] : Use NWS
Source: BestForecast at 7:15 PM PDT on May 24, 2012
Descriptive Forecast
Saturday
partlycloudy Partly cloudy in the morning, then clear. High of 70F. Winds from the SW at 10 to 15 mph.
Saturday Night
nt_partlycloudy Partly cloudy. Low of 48F. Winds from the SW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 53 | 49 62 | 50 67 | 53 52 | 46
Wind 8 mph SW 11 mph SW 13 mph WSW 8 mph SW
Humidity 84% 65% 60% 82%
Chance of Precip. 10% 10% 10% 10%
Cloud Cover 51% 13% 24% 55%
Conditions Partly Cloudy Clear Clear Partly Cloudy
Sunrise & Sunset
5:50 AM
8:19 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [3.35], Average RMSE [1.73]
The National Weather Service forecast quality is fair. MaxT RMSE [3.37], Average RMSE [1.85] : Use NWS
Source: BestForecast at 7:15 PM PDT on May 24, 2012
Descriptive Forecast
Sunday
partlycloudy Partly cloudy in the morning, then clear. High of 72F. Winds from the WSW at 5 to 15 mph.
Sunday Night
nt_partlycloudy Mostly cloudy in the evening, then overcast. Fog overnight. Low of 50F. Winds from the WSW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 51 | 47 66 | 53 69 | 48 55 | 49
Wind 6 mph SW 8 mph West 11 mph West 7 mph WSW
Humidity 86% 63% 46% 84%
Chance of Precip. 10% 10% 10% 0%
Cloud Cover 52% 11% 13% 72%
Conditions Partly Cloudy Clear Clear Fog
Sunrise & Sunset
5:49 AM
8:20 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.33], Average RMSE [2.16]
The National Weather Service forecast quality is poor. MaxT RMSE [3.70], Average RMSE [2.10] : Use NWS
Source: BestForecast at 7:15 PM PDT on May 24, 2012
Descriptive Forecast
Monday
partlycloudy Overcast in the morning, then clear. High of 68F. Winds from the WSW at 5 to 10 mph.
Monday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 46F. Winds from the SW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 53 | 47 59 | 44 66 | 49 51 | 45
Wind 5 mph WSW 7 mph WSW 9 mph WSW 6 mph SW
Humidity 82% 58% 53% 79%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 100% 15% 0% 0%
Conditions Fog Clear Clear Clear
Sunrise & Sunset
5:49 AM
8:21 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.65], Average RMSE [3.12]
The National Weather Service forecast quality is poor. MaxT RMSE [4.26], Average RMSE [2.38] : Use NWS
Source: BestForecast at 7:15 PM PDT on May 24, 2012
Descriptive Forecast
Tuesday
partlycloudy Partly cloudy in the morning, then clear. High of 72F. Winds from the WSW at 5 to 10 mph.
Tuesday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 48F. Winds from the SW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 51 | 44 65 | 46 66 | 46 53 | 44
Wind 4 mph WSW 5 mph West 8 mph West 6 mph SW
Humidity 77% 50% 46% 71%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 63% 0% 0% 22%
Conditions Fog Clear Clear Fog
Sunrise & Sunset
5:48 AM
8:21 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.14], Average RMSE [3.13]
The National Weather Service forecast quality is poor. MaxT RMSE [4.81], Average RMSE [2.57] : Use NWS
Source: BestForecast at 7:15 PM PDT on May 24, 2012
Descriptive Forecast
Wednesday
partlycloudy Clear. High of 82F. Winds from the West at 5 to 10 mph.
Wednesday Night
nt_clear Clear. Low of 52F. Winds from the SW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 54 | 46 71 | 56 72 | 47 56 | 47
Wind 3 mph SW 4 mph NW 8 mph West 6 mph SW
Humidity 72% 58% 42% 71%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 98% 4% 0% 0%
Conditions Fog Clear Clear Clear
Sunrise & Sunset
5:48 AM
8:21 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [7.89], Average RMSE [4.40]
The National Weather Service forecast quality is poor. MaxT RMSE [5.66], Average RMSE [2.89] : Use NWS
Source: BestForecast at 7:15 PM PDT on May 24, 2012
Descriptive Forecast
Thursday
clear Clear. High of 84F. Winds from the WSW at 5 to 10 mph.
Thursday Night
nt_clear Clear. Low of 55F. Winds from the SW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 57 | 47 75 | 56 77 | 53 58 | 46
Wind 4 mph SW 5 mph WSW 9 mph WSW 7 mph SW
Humidity 71% 53% 44% 68%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% 0% 0% 0%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:48 AM
8:21 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [8.31], Average RMSE [4.24]
Source: BestForecast at 7:15 PM PDT on May 24, 2012
Descriptive Forecast
Friday
clear Clear. High of 82F. Winds from the West at 5 to 15 mph.
Friday Night
nt_clear Clear. Low of 54F. Winds from the WSW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 58 | 50 74 | 58 74 | 54 58 | 49
Wind 6 mph SW 5 mph WSW 11 mph West 8 mph WSW
Humidity 74% 55% 49% 73%
Chance of Precip. 0% 10% 10% 10%
Cloud Cover 0% 2% 4% 10%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:48 AM
8:21 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [7.82], Average RMSE [3.51]
Source: BestForecast at 7:15 PM PDT on May 24, 2012
Descriptive Forecast
Saturday
clear Clear. High of 79F. Winds from the West at 5 to 15 mph.
Saturday Night
nt_clear Partly cloudy. Low of 52F. Winds from the West at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 56 | 52 71 | 63 70 | 59 57 | 51
Wind 6 mph WSW 6 mph West 12 mph West 8 mph West
Humidity 85% 73% 64% 78%
Chance of Precip. 10% 10% 10% 10%
Cloud Cover 16% 9% 3% 21%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:48 AM
8:21 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.55], Average RMSE [3.15]
Source: BestForecast at 7:15 PM PDT on May 24, 2012
Descriptive Forecast
Sunday
partlycloudy Partly cloudy. High of 77F. Winds from the WNW at 5 to 15 mph.
Sunday Night
nt_clear Clear. Low of 50F. Winds from the West at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 53 | 49 69 | 56 71 | 52 57 | 45
Wind 6 mph West 7 mph WNW 13 mph WNW 8 mph West
Humidity 86% 64% 48% 61%
Chance of Precip. 10% 0% 0% 0%
Cloud Cover 40% 24% 7% 4%
Conditions Partly Cloudy Clear Clear Clear
Sunrise & Sunset
5:48 AM
8:21 PM
Source: BestForecast at 7:15 PM PDT on May 24, 2012
Descriptive Forecast
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 52 | 44 71 | 53 73 | 48 60 | 43
Wind 6 mph West 7 mph WNW 12 mph West 7 mph West
Humidity 70% 52% 40% 55%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 1% % % %
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:48 AM
8:21 PM
Scientific Forecaster Discussion — MOS Weather Graph
Nearby
History & Almanac
May 25, 2012 Max Temp Min Temp
Normal (KLVK) 76 °F 51 °F
Record (KLVK) 98 °F (1982) 40 °F (1945)
Yesterday 75 °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
Yesterday Good
PM2.5
Current Good
OZONE
Current Good
PM2.5
Thursday 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 55.0 °F
Richmond, CA 59.0 °F
Port Chicago, CA 64.0 °F
Marine Forecast
Astronomy
May. 24, 2012 Rise Set
Actual Time 5:50 AM PDT 8:18 PM PDT
Civil Twilight 5:20 AM PDT 8:49 PM PDT
Nautical Twilight 4:43 AM PDT 9:26 PM PDT
Astronomical Twilight 4:02 AM PDT 10:08 PM PDT
Moon 8:55 AM PDT (5/24) 11:23 PM PDT (5/24)
Length Of Visible Light 15h 28m
Length of Day
14h 27m
Tomorrow will be 1m 20s longer.
Waxing Crescent, 16% of the Moon is Illuminated
Today
Waxing Crescent
May 28
First Quarter
Jun 4
Full
Jun 11
Last Quarter
Jun 19
New
Visit Astronomy
Yesterday's Extremes
State Highs State Lows
99 °F
Needles
98 °F
Palm Springs
98 °F
Thermal
96 °F
Imperial
96 °F
Blythe
24 °F
Truckee-Tahoe
28 °F
South Lake Tahoe
30 °F
Alturas
35 °F
Weaverville
36 °F
Montague
Record Extremes
Snow Depth
Station Depth Elevation
Blue Lakes 1 in 8000 ft
Forestdale Creek 1 in 8029 ft
Ebbetts Pass 0 in 8700 ft
Rubicon #2 0 in 7500 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
A Musical Journey From the '70s To Today 6:00 PM PDT 2012-05-25 Thunderstorm, 61°F
The 5th Annual Killer Laughs Competition - Semi Final Round #1 7:00 PM PDT 2012-05-25 Thunderstorm, 57°F
Teddy Carpenter 7:00 PM PDT 2012-05-25 Thunderstorm, 57°F
Teddy Carpenter 9:00 PM PDT 2012-05-25 Thunderstorm, 54°F
Dublin Roundtable May Meeting 7:00 AM PDT 2012-05-25 Chance of Rain, 49°F
\"Battle for the Purple Boot\" Blind Wine Tasting -- Livermore vs. Santa Cruz 6:00 PM PDT 2012-05-25 Thunderstorm, 61°F
Event data courtesy eviesays.com
Aviation
City Temp. Conditions Updated
Livermore 52 °F Clear 10:53 PM PDT
Concord 54 °F Clear 10:53 PM PDT
Hayward 53 °F Clear 10:54 PM PDT
Oakland 53 °F Partly Cloudy 10:53 PM PDT
View all Aviation Tools
Flight To ETA Status
SWA3873
Ontario, CA 		KOAK 09:02PM On Time
ASA828
Kailua/Kona, HI 		KOAK 09:08PM On Time
FDX1818
Reno, NV 		KOAK 09:12PM On Time
SWA3868
San Diego, CA 		KOAK 09:19PM On Time
Flight Tracker by FlightAware FlightAware
View U.S. Airport Delays
Type Condition
Flight Rule: VFR (KLVK)
Wind Speed: 11.0 kts.
Wind Dir: 256° (WSW)
Ceiling: Unlimited

METAR KLVK 250553Z AUTO 20011KT 10SM CLR 11/07 A2975 RMK AO2 SLP070 T01110072 10211 20111 51007

View all Reports & Maps
Sports
Event Date Forecast
Twins vs. White Sox 7:10 PM CDT on May 24, 2012 Partly Cloudy, 86 °F
Phillies vs. Cardinals 7:15 PM CDT on May 24, 2012 Clear, 86 °F
Yankees vs. Athletics 7:05 PM PDT on May 25, 2012 Thunderstorm, 56 °F
Yankees vs. Athletics 1:05 PM PDT on May 26, 2012 Partly Cloudy, 61 °F
Event Date Forecast
Athletic vs. Barcelona 12:00 PM CEST on May 25, 2012 Clear, High 84° F/ 29° C
Barcelona vs. Athletic 10:00 PM CEST on May 25, 2012 Clear, 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, 76 °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
APRSWXNET Blackhawk CA, Danville, CA 51 °F - 42 °F 71% WSW  at  2 mph 0.00 in / hr 816 ft 10:58 PM PDT MADIS
Hidden Hills Estates, Danville, CA 53.3 °F - 41 °F 63% SSE  at  2.9 mph 0.00 in / hr 709 ft 11:23 PM PDT Rapid Fire  
FSTC - San Ramon, San Ramon, CA 52.8 °F - 42 °F 67% West  at  9.0 mph 0.00 in / hr 468 ft 10:29 PM PDT Normal
APRSWXNET Diablo CA , Diablo, CA 54 °F - 40 °F 59% WNW  at  3 mph 0.00 in / hr 853 ft 9:08 PM PDT MADIS
Canyon Lakes, San Ramon, CA 51.7 °F - 40 °F 63% NNW  at  0.0 mph 0.00 in / hr 492 ft 11:23 PM PDT Rapid Fire  
Montair School, Danville, CA 52.9 °F - 41 °F 64% South  at  0.0 mph 0.00 in / hr 200 ft 11:23 PM PDT Rapid Fire  
Bollinger, San Ramon, CA 50.8 °F - 40 °F 67% WNW  at  5.0 mph 0.00 in / hr 0 ft 11:20 PM PDT Normal  
K6WL - San Ramon, San Ramon, CA 52.0 °F - 42 °F 69% SSW  at  1.0 mph - / hr 502 ft 11:13 PM PDT Normal  
Bollinger Hills, San Ramon, CA 51.4 °F - 30 °F 46% West  at  6.3 mph 0.00 in / hr 400 ft 11:23 PM PDT Rapid Fire  
Old Ranch Estates, San Ramon, CA 51.8 °F - 45 °F 75% SW  at  0.0 mph 0.00 in / hr 468 ft 11:23 PM PDT Rapid Fire
Montecito, San Ramon, CA 51.8 °F - 44 °F 74% South  at  4.0 mph 0.00 in / hr 706 ft 11:20 PM PDT Normal  
West Alamo - Litina, Alamo, CA 53.8 °F - 44 °F 69% SE  at  1.6 mph 0.00 in / hr 269 ft 11:22 PM PDT Rapid Fire  
Schaefer Ranch, Dublin, CA 47.8 °F 44 °F 40 °F 75% WSW  at  9.0 mph - / hr 920 ft 11:22 PM PDT Rapid Fire  
Alamo - Castle Crest, Alamo, CA 53.0 °F - 42 °F 65% ESE  at  2.0 mph 0.00 in / hr 344 ft 11:18 PM PDT Normal
MesoWest Pleasanton , Pleasanton, CA 54 °F - - - SSW  at  3 mph 0.00 in / hr 99 ft 10:00 PM PDT MADIS
Palomares Hills, Castro Valley, CA 50.0 °F - 34 °F 55% NNW  at  2.2 mph 0.00 in / hr 803 ft 11:23 PM PDT Normal  
Pleasanton Foothills, Pleasanton, CA 53.6 °F - 44 °F 69% SSE  at  0.7 mph 0.00 in / hr 341 ft 11:10 PM PDT Rapid Fire  
Downtown, Walnut Creek, CA 53.8 °F - 42 °F 65% SW  at  1.0 mph 0.00 in / hr 145 ft 11:14 PM PDT Normal  
Burton Valley, LAFAYETTE, CA 50.5 °F - 42 °F 73% WSW  at  6.0 mph 0.00 in / hr 587 ft 11:22 PM PDT Rapid Fire  
APRSWXNET Walnut Creek CA U, Walnut Creek, CA 54 °F - 37 °F 53% South  at  0 mph 0.00 in / hr 114 ft 11:02 PM PDT MADIS
Parkside/Creekside, Pleasanton, CA 52.2 °F - 42 °F 68% West  at  0.4 mph 0.00 in / hr 370 ft 11:23 PM PDT Rapid Fire  
Columbia, Castro Valley, CA - - - - North  at  - - / hr 431 ft 11:17 PM PDT Normal
Sports Park - Bird Land, Pleasanton, CA 50.2 °F - 40 °F 69% SW  at  0.0 mph 0.00 in / hr 310 ft 11:15 PM PDT Normal  
Woodlands, Walnut Creek, CA 54.8 °F - 38 °F 54% NE  at  3.0 mph 0.00 in / hr 68 ft 11:20 PM PDT Normal
Foothill High School, Pleasanton, CA 51.3 °F - 49 °F 91% SE  at  6.0 mph 0.00 in / hr 367 ft 11:20 PM PDT Normal  
Orloff Park, Pleasanton, CA 53.0 °F - 47 °F 79% SSW  at  0.0 mph 0.00 in / hr 352 ft 11:23 PM PDT Rapid Fire
Castro Valley, Castro Valley, CA 49.3 °F 48 °F 43 °F 80% West  at  4.0 mph 0.00 in / hr 0 ft 11:23 PM PDT Normal
Camino Pablo, Moraga, CA 50.9 °F - 44 °F 77% WSW  at  8.0 mph 0.00 in / hr 502 ft 11:23 PM PDT Rapid Fire  
RAWS BLACK DIAMOND CA, Clayton, CA 49 °F 41 °F 37 °F 64% West  at  28 mph 0.00 in / hr 1600 ft 10:28 PM PDT MADIS
Pleasanton Valley, Pleasanton, CA 53.6 °F - 44 °F 69% SSE  at  0.0 mph 0.00 in / hr 344 ft 11:23 PM PDT Rapid Fire  
Claycord, Concord, CA 51.9 °F - 41 °F 66% East  at  0.0 mph 0.00 in / hr 292 ft 11:23 PM PDT Rapid Fire  
East Concord, Concord, CA 53.1 °F - 42 °F 67% SE  at  0.0 mph 0.00 in / hr 362 ft 11:19 PM PDT Normal  
Pentozzi Treat & Cowell, Concord, CA 54.8 °F - 39 °F 55% West  at  0.0 mph 0.00 in / hr 250 ft 11:23 PM PDT Rapid Fire  
RAWS LAS TRAMPAS CA, Walnut Creek, CA 45 °F 37 °F 40 °F 81% West  at  19 mph 0.00 in / hr 1759 ft 10:28 PM PDT MADIS
RAWS MALLORY RIDGE CA, Danville, CA 47 °F 40 °F 37 °F 69% West  at  18 mph 0.00 in / hr 1948 ft 10:02 PM PDT MADIS
RAWS MT. DIABLO CA, Clayton, CA 40 °F 28 °F 35 °F 83% SE  at  31 mph 0.00 in / hr 3849 ft 10:17 PM 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