Vallejo, CA

6:08 AM PDT on May 25, 2012 (GMT -0700)
Elev: 49 ft
Lon: 122.2° W
Lat: 38.2° 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

Vallejo Weather at a Glance

Updated 6:08 AM PDT
Elevation
0 ft
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Now
Clear
Clear
Temperature
49.7 °F
Feels Like 49 °F
Wind(mph)
3.4
Sunrise / Set
5:50 AM
8:21 PM
Moon
Waxing Crescent
Today
Thunderstorm 68 °F
T-storms
20% chance of precipitation
Tonight
Thunderstorm 54 °F
T-storms
20% chance of precipitation
Tomorrow
Partly Cloudy 68 | 50 °F
Partly Cloudy
Sunday
Partly Cloudy 77 | 52 °F
Partly Cloudy
Monday
Clear 68 | 52 °F
Clear
Tuesday
Partly Cloudy 70 | 52 °F
Partly Cloudy
Today is forecast to be Much Cooler than yesterday.
Conditions
Pressure
29.68 in
Visibility
10.0 miles
Clouds
Clear -
Moisture
Humidity
78%
Rainfall
0.00 in
Snow Depth
Not available.
METAR
METAR KAPC 251254Z 29010KT 10SM CLR 09/04 A2971 RMK AO2 SLP051 T00890039
Don't speak METAR? Read our FAQ.
Weather Radio
Launch Weather Radio
Temperature
Windchill
49 °F
Dew Point
43 °F
Wind
Speed / Dir
3.4 mph from WSW
Wind Gust
7.6 mph
Health
UV
0 out of 16
Pollen
6.50 out of 12
Pollen Forecast
PM2.5
Good
Flu Activity
Local Activity
View Flu Map
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Source: BestForecast
Descriptive Forecast
Friday
tstorms Mostly cloudy with a chance of a thunderstorm and a chance of rain, then thunderstorms and a chance of rain in the afternoon. High of 68F. Breezy. Winds from the WNW at 10 to 20 mph. Chance of rain 20%.
Friday Night
nt_tstorms Partly cloudy with thunderstorms and a chance of rain. Low of 54F. Winds from the WSW at 5 to 10 mph. Chance of rain 20%.
Saturday
partlycloudy Partly cloudy in the morning, then clear. High of 68F. 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 77F. Winds from the SW at 5 to 15 mph.
Sunday Night
nt_clear Clear. Low of 52F. Winds from the WSW at 5 to 10 mph.
Monday
clear Clear. High of 68F. Winds from the WSW at 5 to 15 mph.
Monday Night
nt_clear Partly cloudy. Fog overnight. Low of 52F. Winds from the WSW at 5 to 10 mph.
Tuesday
partlycloudy Clear. High of 70F. Winds from the WSW at 5 to 10 mph.
Tuesday Night
nt_mostlycloudy Mostly cloudy. Fog overnight. Low of 52F. Winds from the WSW at 5 to 10 mph.
Wednesday
partlycloudy Clear. High of 81F. Winds from the WSW at 5 to 10 mph.
Wednesday Night
nt_clear Clear. Low of 55F. Winds from the WSW at 5 to 10 mph.
Thursday
clear Clear. High of 88F. Winds from the WSW at 5 to 10 mph.
Thursday Night
nt_clear Clear. Low of 54F. Winds from the WSW at 5 to 10 mph.
Friday
clear Clear. High of 82F. Winds from the SW at 5 to 10 mph.
Friday Night
nt_clear Clear. Low of 55F. Winds from the West at 5 to 15 mph.
Saturday
clear Clear. High of 82F. 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 79F. Winds from the WNW at 5 to 15 mph.
Sunday Night
nt_clear Clear. Low of 52F. Winds from the WNW at 5 to 15 mph.
Monday
clear Clear. High of 79F. Winds from the WNW at 5 to 15 mph.
Monday Night
nt_clear Clear. Low of 52F. Winds from the West at 5 to 15 mph.
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Forecast

View Calendar 10-Day Forecast for station KCAVALLE22

Friday, 25
Thunderstorm
68 | 54 °F
T-storms
Chance of
Precipitation
20%
Saturday, 26
Partly Cloudy
68 | 50 °F
Partly Cloudy
Chance of
Precipitation
0%
Sunday, 27
Partly Cloudy
77 | 52 °F
Partly Cloudy
Chance of
Precipitation
0%
Monday, 28
Clear
68 | 52 °F
Clear
Chance of
Precipitation
0%
Tuesday, 29
Partly Cloudy
70 | 52 °F
Partly Cloudy
Chance of
Precipitation
0%
Wednesday, 30
Partly Cloudy
81 | 55 °F
Partly Cloudy
Chance of
Precipitation
0%
Thursday, 31
Clear
88 | 54 °F
Clear
Chance of
Precipitation
0%
Friday, 1
Clear
82 | 55 °F
Clear
Chance of
Precipitation
0%
Saturday, 2
Clear
82 | 52 °F
Clear
Chance of
Precipitation
0%
Sunday, 3
Clear
79 | 52 °F
Clear
Chance of
Precipitation
0%
Source: BestForecast at 1:15 AM PDT on May 25, 2012
Descriptive Forecast
Friday
tstorms Mostly cloudy with a chance of a thunderstorm and a chance of rain, then thunderstorms and a chance of rain in the afternoon. High of 68F. Breezy. Winds from the WNW at 10 to 20 mph. Chance of rain 20%.
Friday Night
nt_tstorms Partly cloudy with thunderstorms and a chance of rain. Low of 54F. Winds from the WSW at 5 to 10 mph. Chance of rain 20%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 53 | 45 63 | 45 66 | 49 56 | 50
Wind 12 mph WNW 11 mph WNW 10 mph West 7 mph West
Humidity 78% 51% 56% 79%
Chance of Precip. 20% 20% 20% 10%
Cloud Cover 62% 76% 67% 24%
Conditions Chance of Rain Chance of a Thunderstorm Thunderstorm Clear
Sunrise & Sunset
5:50 AM
8:21 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.10], Average RMSE [1.32]
The National Weather Service forecast quality is fair. MaxT RMSE [2.87], Average RMSE [1.30] : Use NWS
Source: BestForecast at 1:15 AM PDT on May 25, 2012
Descriptive Forecast
Saturday
partlycloudy Partly cloudy in the morning, then clear. High of 68F. 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 54 | 47 63 | 51 66 | 53 56 | 51
Wind 6 mph WSW 9 mph SW 12 mph WSW 7 mph WSW
Humidity 79% 64% 66% 81%
Chance of Precip. 10% 10% 0% 0%
Cloud Cover 46% 13% 16% 36%
Conditions Partly Cloudy 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 [4.11], Average RMSE [1.55]
The National Weather Service forecast quality is fair. MaxT RMSE [3.20], Average RMSE [1.36] : Use NWS
Source: BestForecast at 1:15 AM PDT on May 25, 2012
Descriptive Forecast
Sunday
partlycloudy Partly cloudy in the morning, then clear. High of 77F. Winds from the SW at 5 to 15 mph.
Sunday Night
nt_clear Clear. Low of 52F. Winds from the WSW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 54 | 51 66 | 52 72 | 56 57 | 51
Wind 5 mph SW 8 mph SW 11 mph WSW 7 mph WSW
Humidity 87% 60% 57% 78%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 54% 10% 11% 0%
Conditions Partly Cloudy 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 [4.31], Average RMSE [1.66]
The National Weather Service forecast quality is poor. MaxT RMSE [3.64], Average RMSE [1.74] : Use NWS
Source: BestForecast at 1:15 AM PDT on May 25, 2012
Descriptive Forecast
Monday
clear Clear. High of 68F. Winds from the WSW at 5 to 15 mph.
Monday Night
nt_clear Partly cloudy. Fog overnight. Low of 52F. Winds from the WSW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 53 | 48 65 | 53 64 | 47 54 | 50
Wind 6 mph WSW 9 mph WSW 11 mph WSW 6 mph WSW
Humidity 83% 63% 54% 85%
Chance of Precip. 10% 0% 0% 0%
Cloud Cover 9% 0% 0% 0%
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 [5.02], Average RMSE [2.32]
The National Weather Service forecast quality is poor. MaxT RMSE [4.15], Average RMSE [2.00] : Use NWS
Source: BestForecast at 1:15 AM PDT on May 25, 2012
Descriptive Forecast
Tuesday
partlycloudy Clear. High of 70F. Winds from the WSW at 5 to 10 mph.
Tuesday Night
nt_mostlycloudy Mostly cloudy. Fog overnight. Low of 52F. Winds from the WSW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 53 | 49 65 | 51 66 | 49 55 | 50
Wind 3 mph WSW 4 mph WSW 8 mph WSW 6 mph WSW
Humidity 86% 57% 53% 81%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 12% 0% 0% 100%
Conditions Fog Clear Clear Overcast
Sunrise & Sunset
5:48 AM
8:24 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [6.69], Average RMSE [3.35]
The National Weather Service forecast quality is poor. MaxT RMSE [4.69], Average RMSE [1.92] : Use NWS
Source: BestForecast at 1:15 AM PDT on May 25, 2012
Descriptive Forecast
Wednesday
partlycloudy Clear. High of 81F. Winds from the WSW at 5 to 10 mph.
Wednesday Night
nt_clear Clear. Low of 55F. Winds from the WSW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 54 | 49 70 | 54 75 | 57 60 | 53
Wind 4 mph WSW 5 mph WSW 8 mph WSW 5 mph WSW
Humidity 83% 55% 54% 77%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 2% 0% 0% 0%
Conditions Fog Clear Clear Clear
Sunrise & Sunset
5:48 AM
8:24 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [6.94], Average RMSE [3.38]
The National Weather Service forecast quality is poor. MaxT RMSE [5.00], Average RMSE [2.15] : Use NWS
Source: BestForecast at 1:15 AM PDT on May 25, 2012
Descriptive Forecast
Thursday
clear Clear. High of 88F. Winds from the WSW at 5 to 10 mph.
Thursday 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 58 | 49 75 | 53 71 | 49 63 | 56
Wind 3 mph WSW 4 mph WSW 8 mph WSW 6 mph WSW
Humidity 76% 48% 45% 76%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% 0% 0% 0%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:48 AM
8:24 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [6.95], Average RMSE [3.10]
Source: BestForecast at 1:15 AM PDT on May 25, 2012
Descriptive Forecast
Friday
clear Clear. High of 82F. Winds from the SW at 5 to 10 mph.
Friday Night
nt_clear Clear. Low of 55F. Winds from the West at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 57 | 51 74 | 50 71 | 51 58 | 49
Wind 4 mph WSW 5 mph SW 10 mph WSW 9 mph West
Humidity 80% 44% 46% 74%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% 0% 0% 2%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:48 AM
8:24 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [7.57], Average RMSE [4.20]
Source: BestForecast at 1:15 AM PDT on May 25, 2012
Descriptive Forecast
Saturday
clear Clear. High of 82F. 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 57 | 53 71 | 52 69 | 57 55 | 47
Wind 7 mph West 7 mph West 13 mph West 9 mph West
Humidity 83% 49% 66% 73%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 5% 8% 11% 8%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:48 AM
8:24 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [8.60], Average RMSE [4.48]
Source: BestForecast at 1:15 AM PDT on May 25, 2012
Descriptive Forecast
Sunday
clear Clear. High of 79F. Winds from the WNW at 5 to 15 mph.
Sunday Night
nt_clear Clear. Low of 52F. Winds from the WNW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 54 | 49 69 | 58 68 | 51 55 | 45
Wind 7 mph West 8 mph WNW 14 mph WNW 10 mph WNW
Humidity 86% 67% 53% 68%
Chance of Precip. 0% 0% 0% 10%
Cloud Cover 5% 4% 2% 2%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:48 AM
8:24 PM
Source: BestForecast at 1:15 AM PDT on May 25, 2012
Descriptive Forecast
Monday
clear Clear. High of 79F. Winds from the WNW at 5 to 15 mph.
Monday 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 | 47 69 | 56 68 | 47 55 | 44
Wind 7 mph WNW 8 mph WNW 13 mph West 9 mph WNW
Humidity 77% 60% 49% 66%
Chance of Precip. 10% 0% 0% 0%
Cloud Cover 1% 1% 1% %
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:48 AM
8:24 PM
Scientific Forecaster Discussion — MOS Weather Graph
Nearby
History & Almanac
May 25, 2012 Max Temp Min Temp
Normal (KAPC) 72 °F 48 °F
Record (KAPC) 80 °F (2000) 42 °F (2010)
Yesterday 75 °F 43 °F
Yesterday's Heating Degree Days: 6
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
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
Richmond, CA 57.9 °F
Port Chicago, CA 63.0 °F
Marine Forecast
Astronomy
May. 25, 2012 Rise Set
Actual Time 5:50 AM PDT 8:21 PM PDT
Civil Twilight 5:20 AM PDT 8:52 PM PDT
Nautical Twilight 4:42 AM PDT 9:30 PM PDT
Astronomical Twilight 4:00 AM PDT 10:12 PM PDT
Moon 9:54 AM PDT No Moon Set
Length Of Visible Light 15h 32m
Length of Day
14h 31m
Tomorrow will be 1m 19s 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
32 °F
Weaverville
33 °F
Blue Canyon
35 °F
Alturas
35 °F
Mount Shasta
Record Extremes
Snow Depth
Station Depth Elevation
Ward Creek #3 0 in 6750 ft
Rubicon #2 0 in 7500 ft
Squaw Valley 1 in 8200 ft
Forestdale Creek 1 in 8029 ft
CSS Lab 0 in 6900 ft
Snow Depth Reports — Snow Depth Map
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Travel & Activities
Travel Planning
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Nearby Events
Event Date Forecast
PHS Sober Grad Night 2012 10:00 PM PDT 2012-05-25 Chance of a Thunderstorm, 56°F
Crown Point Live in Benicia 8:00 PM PDT 2012-05-26 Clear, 57°F
Russell Stafford 8:00 PM PDT 2012-05-26 Clear, 57°F
V-Town, Bringin it Back! 1:00 PM PDT 2012-05-26 Partly Cloudy, 64°F
Event data courtesy eviesays.com
Aviation
City Temp. Conditions Updated
Napa County 48 °F Clear 5:54 AM PDT
Concord 50 °F Clear 5:53 AM PDT
Novato 50 °F Clear 5:55 AM PDT
Fairfield 49 °F Clear 5:55 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 (KAPC)
Wind Speed: 10.0 kts.
Wind Dir: 248° (WSW)
Ceiling: Unlimited

METAR KAPC 251254Z 29010KT 10SM CLR 09/04 A2971 RMK AO2 SLP051 T00890039

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
Near Hwy 37 and Sonama Blvd, Vallejo, CA 49.7 °F 49 °F 43 °F 78% WSW  at  3.4 mph 0.00 in / hr 0 ft 6:08 AM PDT Rapid Fire  
Near River Park... KF6YAP, Vallejo, CA 48.5 °F 48 °F 41 °F 76% West  at  2.0 mph 0.00 in / hr 75 ft 6:08 AM PDT Rapid Fire
Hiddenbrooke, Vallejo, CA 47.8 °F 44 °F 40 °F 74% WSW  at  9.2 mph 0.00 in / hr 341 ft 6:08 AM PDT Rapid Fire
MesoWest Vallejo , Vallejo, CA 49 °F 45 °F 40 °F 70% West  at  10 mph 0.00 in / hr 98 ft 5:00 AM PDT MADIS
Cordelia, Fairfield, CA 49.5 °F 46 °F 38 °F 65% West  at  8.1 mph 0.00 in / hr 0 ft 6:08 AM PDT Normal
APRSWXNET Fairfield CA , Moraga, CA 46 °F 37 °F 39 °F 75% WSW  at  28 mph 0.00 in / hr 574 ft 5:34 AM PDT MADIS
Green Valley, Fairfield, CA 47.9 °F 45 °F 38 °F 68% WNW  at  6.0 mph 0.00 in / hr 558 ft 6:00 AM PDT Normal  
Southampton, Benicia, CA 47.9 °F 46 °F 41 °F 77% NNW  at  5.0 mph 0.00 in / hr 300 ft 6:08 AM PDT Rapid Fire  
Foxboro Heights, Hercules, CA 51.4 °F - 42 °F 71% North  at  5.4 mph 0.00 in / hr 194 ft 6:08 AM PDT Rapid Fire  
MesoWest Fairfield-Chadbourne Rd , Travis Air Force Base, CA 50 °F 45 °F - - West  at  15 mph 0.00 in / hr 33 ft 5:00 AM PDT MADIS
Browns Valley, Napa, CA 46.4 °F 46 °F 39 °F 74% SSE  at  0.0 mph - / hr 384 ft 5:53 AM PDT Normal  
Browns Valley, Napa, CA 46.8 °F 47 °F 38 °F 72% North  at  0.0 mph 0.00 in / hr 150 ft 6:08 AM PDT Rapid Fire  
APRSWXNET Napa CA , Napa, CA 53 °F - 39 °F 60% West  at  0 mph 0.00 in / hr 109 ft 5:44 AM PDT MADIS
SONOMA, CA 52.0 °F - 45 °F 77% NNE  at  6.0 mph 0.00 in / hr 79 ft 6:03 AM PDT Normal  
By the Mall, Fairfield, CA 50.5 °F - 38 °F 61% West  at  5.0 mph 0.00 in / hr 43 ft 6:08 AM PDT Rapid Fire  
APRSWXNET Napa CA US, Napa, CA 50 °F - 38 °F 63% NNW  at  1 mph 0.00 in / hr 78 ft 5:45 AM PDT MADIS
Sophie's Ranch, Sonoma, CA 48.6 °F 49 °F 8 °F 19% ESE  at  2.3 mph 0.00 in / hr 59 ft 6:08 AM PDT Rapid Fire  
Downtown, Martinez, CA 50.4 °F - 39 °F 64% WNW  at  12.0 mph 0.00 in / hr 204 ft 6:08 AM PDT Rapid Fire  
NERRS NERRS METEOROLOGICAL SITE AT SUISU, Suisun City, CA 48 °F 44 °F 39 °F 70% West  at  10 mph 0.00 in / hr 0 ft 5:45 AM PDT MADIS
Monticello Road 900', Napa, CA 45.2 °F 43 °F 36 °F 71% WNW  at  4.0 mph 0.00 in / hr 950 ft 6:02 AM PDT Normal  
Oak Knoll, Napa, CA 48.0 °F 48 °F 40 °F 73% WNW  at  2.3 mph 0.00 in / hr 146 ft 6:08 AM PDT Rapid Fire  
APRSWXNET El Sobrante CA , El Sobrante, CA 50 °F - - - North  at  - 0.00 in / hr 324 ft 5:49 AM PDT MADIS
Martinez (Vine Hill) - KCAMARTI7, Martinez, CA 50.9 °F - 40 °F 65% ENE  at  2.3 mph 0.00 in / hr 38 ft 6:08 AM PDT Rapid Fire  
Canyon Park, El Sobrante, CA 50.0 °F - 42 °F 74% WNW  at  0.0 mph 0.00 in / hr 180 ft 6:05 AM PDT Normal  
Just off the Plaza, Sonoma, CA 51.8 °F - 38 °F 60% WSW  at  6.0 mph 0.00 in / hr 80 ft 5:59 AM PDT Normal
Old Soda Springs Rd 850 ft, Napa, CA 46.5 °F 46 °F 37 °F 69% WNW  at  3.0 mph 0.00 in / hr 846 ft 6:08 AM PDT Rapid Fire  
K6TPK, Concord, CA 51.3 °F - 34 °F 51% East  at  10.5 mph 0.00 in / hr 23 ft 6:08 AM PDT Rapid Fire
Mtz/PH K6RHL, Martinez, CA 50.6 °F - 41 °F 70% WNW  at  2.0 mph 0.00 in / hr 350 ft 6:06 AM PDT Normal
Pine St, Richmond, CA 50.7 °F - 38 °F 61% WNW  at  4.0 mph 0.00 in / hr 59 ft 6:05 AM PDT Normal  
El Cerrito / Richmond Heights, El Cerrito, CA 49.9 °F 48 °F 41 °F 71% NW  at  5.0 mph 0.00 in / hr 300 ft 6:06 AM PDT Normal  
Poinsett Park, El Cerrito, CA 50.4 °F - 42 °F 72% NNW  at  1.0 mph 0.00 in / hr 195 ft 6:08 AM PDT Rapid Fire
El Cerrito Hills, El Cerrito, CA 49.8 °F 50 °F 38 °F 65% SSW  at  0.0 mph 0.00 in / hr 400 ft 6:08 AM PDT Rapid Fire  
MesoWest San Pablo-Met , Richmond, CA 49 °F 44 °F - - WNW  at  11 mph 0.00 in / hr 164 ft 5:00 AM PDT MADIS
Central Richmond, Richmond, CA 51.3 °F - 41 °F 67% WNW  at  10.0 mph 0.00 in / hr 69 ft 6:08 AM PDT Rapid Fire
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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