Hercules, CA

12:18 AM PDT on May 25, 2012 (GMT -0700)
Elev: 112 ft
Lon: 122.3° 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

Hercules Weather at a Glance

Updated 12:18 AM PDT
Weather Station - report
Foxboro Heights, Hercules
Elevation
194 ft
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Now
Clear
Clear
Temperature
52.9 °F
Feels Like 52.9 °F
Wind(mph)
14.5
Sunrise / Set
5:51 AM
8:21 PM
Moon
Waxing Crescent
Tonight
Clear 50 °F
Clear
Friday
Thunderstorm 61 °F
T-storms
20% chance of precipitation
Friday Night
Thunderstorm 50 °F
T-storms
20% chance of precipitation
Saturday
Partly Cloudy 63 | 50 °F
Partly Cloudy
Sunday
Partly Cloudy 64 | 48 °F
Partly Cloudy
Monday
Partly Cloudy 61 | 48 °F
Partly Cloudy
Today is forecast to be Much Cooler than yesterday.
Conditions
Pressure
29.70 in
Visibility
10.0 miles
Clouds
Clear -
Moisture
Humidity
75%
Rainfall
0.00 in
Snow Depth
Not available.
METAR
METAR KCCR 250653Z 25006KT 10SM CLR 12/04 A2973 RMK AO2 PK WND 28029/0558 SLP055 T01170044
Don't speak METAR? Read our FAQ.
Weather Radio
Launch Weather Radio
Temperature
Temperature
52.9 °F
Dew Point
45 °F
Wind
Speed / Dir
14.5 mph from South
Wind Gust
14.5 mph
Health
UV
0 out of 16
Pollen
6.40 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 61F. Breezy. Winds from the WNW at 15 to 20 mph. Chance of rain 20%.
Friday Night
nt_tstorms Partly cloudy with thunderstorms and a chance of rain. Low of 50F. Winds from the West at 5 to 15 mph. Chance of rain 20%.
Saturday
partlycloudy Partly cloudy. High of 63F. Winds from the SW at 10 to 15 mph.
Saturday Night
nt_partlycloudy Partly cloudy. Low of 50F. Winds from the SW at 5 to 15 mph.
Sunday
partlycloudy Partly cloudy in the morning, then clear. High of 64F. Winds from the SW at 5 to 10 mph.
Sunday Night
nt_partlycloudy Partly cloudy in the evening, then overcast. Fog overnight. Low of 48F. Winds from the West at 5 to 10 mph.
Monday
partlycloudy Overcast in the morning, then clear. High of 61F. Winds from the West at 5 to 15 mph.
Monday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 48F. Winds from the WSW at 5 to 10 mph.
Tuesday
partlycloudy Partly cloudy in the morning, then clear. High of 63F. Winds from the WSW at 5 to 10 mph.
Tuesday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 50F. Winds from the WSW at 5 to 10 mph.
Wednesday
partlycloudy Clear. High of 66F. Winds from the WSW at 5 to 10 mph.
Wednesday Night
nt_clear Clear. Fog overnight. Low of 54F. Winds from the WSW at 5 to 10 mph.
Thursday
partlycloudy Clear. High of 73F. Winds from the WSW at 5 to 10 mph.
Thursday Night
nt_clear Clear. Low of 54F. Winds from the SW at 5 to 10 mph.
Friday
clear Clear. High of 72F. Winds from the West at 5 to 15 mph.
Friday Night
nt_clear Partly cloudy. Low of 54F. Winds from the West at 5 to 15 mph.
Saturday
clear Clear. High of 66F. Winds from the West at 5 to 15 mph.
Saturday Night
nt_partlycloudy Partly cloudy. Low of 52F. Winds from the West at 5 to 15 mph.
Sunday
partlycloudy Partly cloudy. High of 66F. Winds from the WNW at 5 to 20 mph.
Sunday Night
nt_clear Clear. Low of 52F. Winds from the WNW at 10 to 15 mph.
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Forecast

View Calendar 10-Day Forecast for station KCAELCER5

Friday, 25
Thunderstorm
61 | 50 °F
T-storms
Chance of
Precipitation
20%
Saturday, 26
Partly Cloudy
63 | 50 °F
Partly Cloudy
Chance of
Precipitation
0%
Sunday, 27
Partly Cloudy
64 | 48 °F
Partly Cloudy
Chance of
Precipitation
0%
Monday, 28
Partly Cloudy
61 | 48 °F
Partly Cloudy
Chance of
Precipitation
0%
Tuesday, 29
Partly Cloudy
63 | 50 °F
Partly Cloudy
Chance of
Precipitation
0%
Wednesday, 30
Partly Cloudy
66 | 54 °F
Partly Cloudy
Chance of
Precipitation
0%
Thursday, 31
Partly Cloudy
73 | 54 °F
Partly Cloudy
Chance of
Precipitation
0%
Friday, 1
Clear
72 | 54 °F
Clear
Chance of
Precipitation
0%
Saturday, 2
Clear
66 | 52 °F
Clear
Chance of
Precipitation
0%
Sunday, 3
Partly Cloudy
66 | 52 °F
Partly Cloudy
Chance of
Precipitation
0%
Source: BestForecast at 7:14 PM PDT on May 24, 2012
Descriptive Forecast
Friday
tstorms Mostly cloudy with thunderstorms and a chance of rain. High of 61F. Breezy. Winds from the WNW at 15 to 20 mph. Chance of rain 20%.
Friday Night
nt_tstorms Partly cloudy with thunderstorms and a chance of rain. Low of 50F. Winds from the West at 5 to 15 mph. Chance of rain 20%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 50 | 44 57 | 43 60 | 43 51 | 47
Wind 15 mph NW 17 mph WNW 16 mph WNW 6 mph WNW
Humidity 80% 59% 56% 87%
Chance of Precip. 20% 20% 20% 10%
Cloud Cover 61% 72% 68% 31%
Conditions Chance of Rain Thunderstorm Thunderstorm Partly Cloudy
Sunrise & Sunset
5:51 AM
8:21 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.68], Average RMSE [2.28]
The National Weather Service forecast quality is poor. MaxT RMSE [3.86], Average RMSE [2.22] : Use NWS
Source: BestForecast at 7:14 PM PDT on May 24, 2012
Descriptive Forecast
Saturday
partlycloudy Partly cloudy. High of 63F. Winds from the SW at 10 to 15 mph.
Saturday Night
nt_partlycloudy Partly cloudy. Low of 50F. Winds from the SW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 51 | 47 56 | 50 57 | 50 52 | 49
Wind 6 mph SW 10 mph SW 12 mph WSW 6 mph WSW
Humidity 88% 78% 73% 95%
Chance of Precip. 10% 10% 0% 0%
Cloud Cover 49% 30% 17% 55%
Conditions Partly Cloudy Partly Cloudy Clear Partly Cloudy
Sunrise & Sunset
5:50 AM
8:22 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [3.30], Average RMSE [1.70]
The National Weather Service forecast quality is poor. MaxT RMSE [4.18], Average RMSE [2.29] : Use NWS
Source: BestForecast at 7:14 PM PDT on May 24, 2012
Descriptive Forecast
Sunday
partlycloudy Partly cloudy in the morning, then clear. High of 64F. Winds from the SW at 5 to 10 mph.
Sunday Night
nt_partlycloudy Partly cloudy in the evening, then overcast. 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 | 48 60 | 54 62 | 50 51 | 48
Wind 5 mph SW 9 mph SW 9 mph WSW 8 mph West
Humidity 92% 78% 63% 88%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 55% 13% 13% 38%
Conditions Partly Cloudy 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 [3.55], Average RMSE [2.11]
The National Weather Service forecast quality is poor. MaxT RMSE [3.83], Average RMSE [2.21] : Use NWS
Source: BestForecast at 7:14 PM PDT on May 24, 2012
Descriptive Forecast
Monday
partlycloudy Overcast in the morning, then clear. High of 61F. Winds from the West at 5 to 15 mph.
Monday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 48F. Winds from the WSW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 52 | 49 58 | 51 57 | 51 48 | 45
Wind 6 mph West 8 mph WSW 10 mph WSW 6 mph WSW
Humidity 92% 74% 79% 88%
Chance of Precip. 10% 10% 0% 0%
Cloud Cover 88% 5% 0% 0%
Conditions Fog Clear Clear Clear
Sunrise & Sunset
5:49 AM
8:23 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [3.60], Average RMSE [2.46]
The National Weather Service forecast quality is poor. MaxT RMSE [3.62], Average RMSE [2.45] : Use NWS
Source: BestForecast at 7:14 PM PDT on May 24, 2012
Descriptive Forecast
Tuesday
partlycloudy Partly cloudy in the morning, then clear. High of 63F. Winds from the WSW at 5 to 10 mph.
Tuesday Night
nt_partlycloudy Partly cloudy. 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 49 | 47 57 | 47 59 | 50 53 | 48
Wind 4 mph West 7 mph West 9 mph WSW 5 mph WSW
Humidity 93% 67% 74% 84%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 19% 0% 0% 21%
Conditions Fog Clear Clear Fog
Sunrise & Sunset
5:49 AM
8:24 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.44], Average RMSE [2.17]
The National Weather Service forecast quality is poor. MaxT RMSE [3.97], Average RMSE [2.55] : Use NWS
Source: BestForecast at 7:14 PM PDT on May 24, 2012
Descriptive Forecast
Wednesday
partlycloudy Clear. High of 66F. Winds from the WSW at 5 to 10 mph.
Wednesday Night
nt_clear Clear. Fog overnight. Low of 54F. Winds from the WSW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 52 | 49 59 | 47 61 | 46 57 | 52
Wind 3 mph WSW 5 mph WSW 9 mph WSW 5 mph WSW
Humidity 88% 60% 59% 83%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 96% 0% 0% 0%
Conditions Fog Clear Clear Clear
Sunrise & Sunset
5:49 AM
8:24 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.25], Average RMSE [2.27]
The National Weather Service forecast quality is poor. MaxT RMSE [4.29], Average RMSE [2.43] : Use NWS
Source: BestForecast at 7:14 PM PDT on May 24, 2012
Descriptive Forecast
Thursday
partlycloudy Clear. High of 73F. Winds from the WSW at 5 to 10 mph.
Thursday Night
nt_clear Clear. Low of 54F. Winds from the SW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 56 | 51 67 | 57 66 | 55 55 | 53
Wind 4 mph SW 6 mph SW 9 mph WSW 7 mph WSW
Humidity 89% 69% 69% 90%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% 0% 0% 0%
Conditions Fog Clear Clear Clear
Sunrise & Sunset
5:49 AM
8:24 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.48], Average RMSE [2.88]
Source: BestForecast at 7:14 PM PDT on May 24, 2012
Descriptive Forecast
Friday
clear Clear. High of 72F. Winds from the West at 5 to 15 mph.
Friday Night
nt_clear Partly cloudy. Low of 54F. Winds from the West at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 56 | 54 67 | 61 68 | 55 56 | 50
Wind 5 mph WSW 7 mph West 13 mph West 10 mph West
Humidity 93% 78% 65% 78%
Chance of Precip. 0% 10% 10% 10%
Cloud Cover 0% 2% 3% 10%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:49 AM
8:24 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.53], Average RMSE [3.35]
Source: BestForecast at 7:14 PM PDT on May 24, 2012
Descriptive Forecast
Saturday
clear Clear. High of 66F. Winds from the West at 5 to 15 mph.
Saturday Night
nt_partlycloudy 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 | 51 65 | 57 63 | 54 55 | 48
Wind 8 mph West 8 mph West 14 mph West 10 mph West
Humidity 87% 76% 69% 81%
Chance of Precip. 10% 10% 10% 10%
Cloud Cover 17% 11% 4% 24%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:49 AM
8:24 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.04], Average RMSE [3.41]
Source: BestForecast at 7:14 PM PDT on May 24, 2012
Descriptive Forecast
Sunday
partlycloudy Partly cloudy. High of 66F. Winds from the WNW at 5 to 20 mph.
Sunday Night
nt_clear Clear. Low of 52F. Winds from the WNW at 10 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 54 | 49 63 | 51 64 | 46 55 | 43
Wind 8 mph West 10 mph WNW 16 mph WNW 11 mph WNW
Humidity 86% 65% 50% 64%
Chance of Precip. 10% 0% 0% 0%
Cloud Cover 44% 26% 8% 4%
Conditions Partly Cloudy Partly Cloudy Clear Clear
Sunrise & Sunset
5:49 AM
8:24 PM
Source: BestForecast at 7:14 PM PDT on May 24, 2012
Descriptive Forecast
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 54 | 45 63 | 47 66 | 43 55 | 40
Wind 8 mph WNW 9 mph WNW 15 mph WNW 10 mph WNW
Humidity 73% 56% 44% 59%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 1% % % %
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:49 AM
8:24 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 54 °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
Current Good
OZONE
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. 25, 2012 Rise Set
Actual Time 5:51 AM PDT 8:21 PM PDT
Civil Twilight 5:20 AM PDT 8:51 PM PDT
Nautical Twilight 4:43 AM PDT 9:29 PM PDT
Astronomical Twilight 4:01 AM PDT 10:11 PM PDT
Moon 9:54 AM PDT No Moon Set
Length Of Visible Light 15h 31m
Length of Day
14h 30m
Tomorrow will be 1m 19s longer.
Waxing Crescent, 17% 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
60 °F
Van Nuys
57 °F
Atwater
55 °F
Lincoln
51 °F
Novato
48 °F
Vandenberg AFB
37 °F
Mount Shasta
48 °F
Vandenberg AFB
51 °F
Novato
55 °F
Lincoln
57 °F
Atwater
Record Extremes
Snow Depth
Station Depth Elevation
Carson Pass 0 in 8500 ft
Forestdale Creek 1 in 8029 ft
Blue Lakes 1 in 8000 ft
Rubicon #2 0 in 7500 ft
Ward Creek #3 0 in 6750 ft
Snow Depth Reports — Snow Depth Map
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Nearby Events
Event Date Forecast
Expect the unexpected with Psychic Medium Bill Phiilipps 8:00 PM PDT 2012-05-25 Thunderstorm, 63°F
Melody Walker 8:00 PM PDT 2012-05-25 Thunderstorm, 63°F
Dance Your Baby Out! 6:00 PM PDT 2012-05-25 Thunderstorm, 66°F
Rosie's Big Bash with Big Bad Voodoo Daddy! 7:00 PM PDT 2012-05-25 Thunderstorm, 65°F
S.B. Ukulele Club 1:00 PM PDT 2012-05-26 Mostly Cloudy, 66°F
Crown Point Live in Benicia 8:00 PM PDT 2012-05-26 Clear, 63°F
Event data courtesy eviesays.com
Aviation
City Temp. Conditions Updated
Concord 53 °F Clear 11:53 PM PDT
Napa County 50 °F Clear 11:54 PM PDT
Novato 52 °F Clear 12:15 AM PDT
Oakland 53 °F Partly Cloudy 11:53 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 (KCCR)
Wind Speed: 6.0 kts.
Wind Dir: 180° (South)
Ceiling: Unlimited

METAR KCCR 250653Z 25006KT 10SM CLR 12/04 A2973 RMK AO2 PK WND 28029/0558 SLP055 T01170044

View all Reports & Maps
Sports
Event Date Forecast
Angels vs. Mariners 7:10 PM PDT on May 24, 2012 Chance of Rain, 54 °F
Royals vs. Orioles 7:05 PM EDT on May 25, 2012 Partly Cloudy, 81 °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
Foxboro Heights, Hercules, CA 52.9 °F - 45 °F 75% South  at  14.5 mph 0.00 in / hr 194 ft 12:18 AM PDT Rapid Fire  
APRSWXNET El Sobrante CA , El Sobrante, CA 51 °F - - - North  at  - 0.00 in / hr 324 ft 12:04 AM PDT MADIS
Canyon Park, El Sobrante, CA 51.8 °F - 43 °F 72% South  at  0.0 mph 0.00 in / hr 180 ft 12:15 AM PDT Normal  
El Cerrito / Richmond Heights, El Cerrito, CA 50.6 °F - 43 °F 76% SW  at  3.0 mph 0.00 in / hr 300 ft 12:05 AM PDT Normal  
Pine St, Richmond, CA 51.2 °F - 42 °F 70% WSW  at  3.0 mph 0.00 in / hr 59 ft 12:15 AM PDT Normal  
Poinsett Park, El Cerrito, CA 51.5 °F - 44 °F 75% WSW  at  0.0 mph 0.00 in / hr 195 ft 12:17 AM PDT Rapid Fire
El Cerrito Hills, El Cerrito, CA 53.7 °F - 41 °F 61% NE  at  0.0 mph 0.00 in / hr 400 ft 12:18 AM PDT Rapid Fire  
MesoWest Vallejo , Vallejo, CA 54 °F - 43 °F 67% WNW  at  9 mph 0.00 in / hr 98 ft 11:00 PM PDT MADIS
Southampton, Benicia, CA 51.4 °F - 43 °F 72% West  at  11.0 mph 0.00 in / hr 300 ft 12:17 AM PDT Rapid Fire  
near Huber Park, El Cerrito, CA 51.3 °F - 43 °F 74% East  at  1.6 mph 0.00 in / hr 270 ft 12:18 AM PDT Rapid Fire  
Berkeley Highlands Terrace, Kensington, CA 48.7 °F 48 °F 20 °F 31% West  at  3.1 mph 0.00 in / hr 667 ft 12:18 AM PDT Rapid Fire  
Central Richmond, Richmond, CA 51.3 °F - 43 °F 74% WNW  at  5.0 mph 0.00 in / hr 69 ft 12:17 AM PDT Rapid Fire
Near River Park... KF6YAP, Vallejo, CA 51.4 °F - 43 °F 72% WSW  at  11.0 mph 0.00 in / hr 75 ft 12:18 AM PDT Rapid Fire
Downtown, Martinez, CA 52.6 °F - 41 °F 65% NW  at  9.0 mph 0.00 in / hr 204 ft 12:17 AM PDT Rapid Fire  
Richmond, CA 53.3 °F - 44 °F 72% NW  at  2.7 mph 0.00 in / hr 15 ft 12:18 AM PDT Rapid Fire  
Thousand Oaks, Berkeley, CA 51.7 °F - 42 °F 69% West  at  0.0 mph - / hr 188 ft 11:58 PM PDT Normal  
Marina Bay, Richmond, CA 52.4 °F - 45 °F 77% NW  at  11.0 mph 0.00 in / hr 65 ft 12:15 AM PDT Normal
Near Hwy 37 and Sonama Blvd, Vallejo, CA 51.7 °F - 44 °F 74% West  at  3.8 mph 0.00 in / hr 0 ft 12:17 AM PDT Rapid Fire  
MesoWest San Pablo-Met , Richmond, CA 52 °F - - - West  at  18 mph 0.00 in / hr 164 ft 11:00 PM PDT MADIS
Mtz/PH K6RHL, Martinez, CA 53.2 °F - 43 °F 68% NW  at  0.0 mph 0.00 in / hr 350 ft 12:05 AM PDT Normal
NOS_PORTS Richmond, CA, Richmond, CA 52 °F - - - WNW  at  24 mph 0.00 in / hr 0 ft 11:48 PM PDT MADIS
Country Club, Orinda, CA 54.6 °F - - - WNW  at  11.1 mph - / hr 700 ft 12:15 AM PDT Normal
Martinez (Vine Hill) - KCAMARTI7, Martinez, CA 53.2 °F - 42 °F 65% NE  at  2.3 mph 0.00 in / hr 38 ft 12:18 AM PDT Rapid Fire  
North Berkeley, Berkeley, CA 54.1 °F - 38 °F 55% North  at  - - / hr 0 ft 12:17 AM PDT Normal  
Berkeley, Berkeley, CA 51.7 °F - 41 °F 66% WNW  at  9.1 mph 0.00 in / hr 183 ft 12:02 AM PDT Normal
Happy Valley / St Stephens Dr, Lafayette, CA 49.1 °F 49 °F 41 °F 74% NNW  at  3.0 mph 0.00 in / hr 715 ft 12:10 AM PDT Normal  
Woodland Hill, Lafayette, CA 50.2 °F - 42 °F 74% West  at  2.0 mph 0.00 in / hr 212 ft 11:51 PM PDT Normal  
Lafayette -- Happy Valley, CA 51.4 °F - 42 °F 70% South  at  0.0 mph 0.00 in / hr 600 ft 12:18 AM PDT Rapid Fire  
MesoWest Kregor Peak , Pleasant Hill, CA 49 °F 41 °F - - West  at  26 mph 0.00 in / hr 577 ft 10:00 PM PDT MADIS
Orinda, CA 48.5 °F 48 °F 42 °F 77% NNW  at  2.0 mph 0.00 in / hr 705 ft 12:15 AM PDT Normal  
Claremont Hills, Oakland, CA 47.3 °F 47 °F 43 °F 84% West  at  2.0 mph 0.00 in / hr 1040 ft 12:15 AM PDT Normal
Grand View Dr., Oakland, Berkeley, CA 49.0 °F 47 °F 43 °F 81% WSW  at  5.0 mph 0.00 in / hr 775 ft 12:15 AM PDT Normal  
Elmwood, near Claremont Hotel, Berkeley, CA 51.1 °F - 44 °F 78% WNW  at  2.0 mph 0.00 in / hr 337 ft 12:10 AM PDT Normal  
APRSWXNET Lafayette CA , Lafayette, CA 51 °F - 41 °F 68% NW  at  8 mph 0.00 in / hr 488 ft 12:03 AM PDT MADIS
Lafayette near Palos Verde Mall, Lafayette, CA 52.7 °F - 42 °F 66% SE  at  0.0 mph 0.00 in / hr 231 ft 12:15 AM PDT Normal  
RAWS BRIONES CA, Lafayette, CA 48 °F 41 °F 39 °F 70% SW  at  21 mph 0.00 in / hr 1450 ft 11:28 PM PDT MADIS
RAWS OAKLAND NORTH CA, Berkeley, CA 45 °F 45 °F 43 °F 92% SSW  at  1 mph 0.00 in / hr 1402 ft 11:33 PM PDT MADIS
MAP SIBLEY VOLCANO (P224), CA , Berkeley, CA 46 °F 44 °F 41 °F 84% WSW  at  4 mph 0.00 in / hr 1440 ft 11:00 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