Olema, CA

4:01 AM PDT on May 25, 2012 (GMT -0700)
Elev: 371 ft
Lon: 122.8° 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

Olema Weather at a Glance

Updated 3:53 AM PDT
Weather Station
Santa Rosa (KSTS)
Elevation
125 ft
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Now
Clear
Clear
Temperature
50 °F
Feels Like 50 °F
Wind(mph)
13
Sunrise / Set
5:53 AM
8:23 PM
Moon
Waxing Crescent
Today
Thunderstorm 68 °F
T-storms
20% chance of precipitation
Tonight
Chance of Rain 46 °F
Chance of Rain
20% chance of precipitation
Tomorrow
Clear 75 | 46 °F
Clear
Sunday
Partly Cloudy 77 | 48 °F
Partly Cloudy
Monday
Partly Cloudy 68 | 46 °F
Partly Cloudy
Tuesday
Partly Cloudy 73 | 50 °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
61%
Rainfall
0.00 in
Snow Depth
Not available.
METAR
METAR KSTS 251053Z AUTO 31011KT 10SM CLR 10/03 A2972 RMK AO2 SLP056 T01000028
Don't speak METAR? Read our FAQ.
Weather Radio
Launch Weather Radio
Temperature
Temperature
50 °F
Dew Point
37 °F
Wind
Speed / Dir
13 mph from NW
Wind Gust
Health
UV
0 out of 16
Pollen
6.40 out of 12
Pollen Forecast
Air Quality
Not available.
Flu Activity
Local Activity
View Flu Map
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Source: BestForecast
Descriptive Forecast
Friday
tstorms Partly cloudy with thunderstorms and a chance of rain in the morning, then overcast with thunderstorms and a chance of rain. High of 68F. Breezy. Winds from the NW at 15 to 20 mph. Chance of rain 20%.
Friday Night
nt_chancerain Partly cloudy with a chance of rain in the evening, then mostly cloudy. Low of 46F. Winds from the NW at 5 to 10 mph. Chance of rain 20%.
Saturday
clear Partly cloudy in the morning, then clear. High of 75F. Winds from the WNW at 5 to 10 mph.
Saturday Night
nt_clear Clear in the evening, then partly cloudy. Low of 46F. Winds from the West at 5 to 15 mph.
Sunday
partlycloudy Partly cloudy. High of 77F. Winds from the WSW at 5 to 15 mph.
Sunday Night
nt_clear Partly cloudy. Fog overnight. Low of 48F. Winds from the WNW at 5 to 10 mph.
Monday
partlycloudy Mostly cloudy in the morning, then clear. High of 68F. Winds from the West at 5 to 15 mph.
Monday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 46F. Winds from the WNW at 5 to 10 mph.
Tuesday
partlycloudy Partly cloudy. High of 73F. Winds from the West at 5 to 10 mph.
Tuesday Night
nt_partlycloudy Partly cloudy. Low of 50F. Winds from the NW at 5 to 10 mph.
Wednesday
partlycloudy Partly cloudy. High of 81F. Winds from the WNW at 5 to 10 mph.
Wednesday Night
nt_partlycloudy Partly cloudy. Low of 52F. Winds from the NW at 5 to 10 mph.
Thursday
clear Clear. High of 91F. Winds from the West at 5 to 10 mph.
Thursday Night
nt_clear Partly cloudy. Low of 54F. Winds from the NW at 5 to 10 mph.
Friday
partlycloudy Partly cloudy. High of 79F. Winds from the West at 5 to 10 mph.
Friday Night
nt_clear Partly cloudy. Low of 55F. Winds from the WNW at 5 to 15 mph.
Saturday
partlycloudy Partly cloudy. High of 77F. Winds from the West at 5 to 15 mph.
Saturday Night
nt_partlycloudy Partly cloudy. Low of 50F. Winds from the WNW at 5 to 15 mph.
Sunday
clear Clear. High of 75F. Winds from the WNW at 5 to 15 mph.
Sunday Night
nt_clear Clear. Low of 50F. Winds from the NW at 10 to 15 mph.
Monday
clear Clear. High of 77F. Winds from the WNW at 5 to 15 mph.
Monday Night
nt_clear Clear. Low of 50F. Winds from the NW at 10 to 15 mph.
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Forecast

View Calendar 10-Day Forecast for station KSTS

Friday, 25
Thunderstorm
68 | 46 °F
T-storms
Chance of
Precipitation
20%
Saturday, 26
Clear
75 | 46 °F
Clear
Chance of
Precipitation
10%
Sunday, 27
Partly Cloudy
77 | 48 °F
Partly Cloudy
Chance of
Precipitation
0%
Monday, 28
Partly Cloudy
68 | 46 °F
Partly Cloudy
Chance of
Precipitation
0%
Tuesday, 29
Partly Cloudy
73 | 50 °F
Partly Cloudy
Chance of
Precipitation
0%
Wednesday, 30
Partly Cloudy
81 | 52 °F
Partly Cloudy
Chance of
Precipitation
0%
Thursday, 31
Clear
91 | 54 °F
Clear
Chance of
Precipitation
0%
Friday, 1
Partly Cloudy
79 | 55 °F
Partly Cloudy
Chance of
Precipitation
0%
Saturday, 2
Partly Cloudy
77 | 50 °F
Partly Cloudy
Chance of
Precipitation
0%
Sunday, 3
Clear
75 | 50 °F
Clear
Chance of
Precipitation
0%
Source: BestForecast at 1:01 AM PDT on May 25, 2012
Descriptive Forecast
Friday
tstorms Partly cloudy with thunderstorms and a chance of rain in the morning, then overcast with thunderstorms and a chance of rain. High of 68F. Breezy. Winds from the NW at 15 to 20 mph. Chance of rain 20%.
Friday Night
nt_chancerain Partly cloudy with a chance of rain in the evening, then mostly cloudy. Low of 46F. Winds from the NW at 5 to 10 mph. Chance of rain 20%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 45 | 42 61 | 41 65 | 42 51 | 44
Wind 10 mph WNW 16 mph NW 12 mph NW 4 mph NW
Humidity 87% 47% 41% 75%
Chance of Precip. 20% 20% 20% 10%
Cloud Cover 40% 63% 42% 30%
Conditions Chance of Rain Thunderstorm Chance of Rain Partly Cloudy
Sunrise & Sunset
5:53 AM
8:23 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [1.98], Average RMSE [2.43]
The National Weather Service forecast quality is fair. MaxT RMSE [2.56], Average RMSE [2.74] : Use NWS
Source: BestForecast at 1:01 AM PDT on May 25, 2012
Descriptive Forecast
Saturday
clear Partly cloudy in the morning, then clear. High of 75F. Winds from the WNW at 5 to 10 mph.
Saturday Night
nt_clear Clear in the evening, then partly cloudy. Low of 46F. Winds from the West at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 49 | 45 65 | 47 67 | 49 50 | 46
Wind 6 mph NW 9 mph West 10 mph West 3 mph West
Humidity 85% 52% 52% 85%
Chance of Precip. 10% 10% 10% 10%
Cloud Cover 6% 30% 17% 0%
Conditions Clear Partly Cloudy Clear Clear
Sunrise & Sunset
5:52 AM
8:24 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.67], Average RMSE [3.11]
The National Weather Service forecast quality is fair. MaxT RMSE [3.36], Average RMSE [2.98] : Use NWS
Source: BestForecast at 1:01 AM PDT on May 25, 2012
Descriptive Forecast
Sunday
partlycloudy Partly cloudy. High of 77F. Winds from the WSW at 5 to 15 mph.
Sunday Night
nt_clear Partly cloudy. Fog overnight. Low of 48F. Winds from the WNW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 49 | 47 69 | 47 71 | 46 52 | 48
Wind 1 mph West 8 mph WSW 10 mph West 8 mph WNW
Humidity 90% 47% 41% 83%
Chance of Precip. 10% 0% 0% 0%
Cloud Cover 44% 47% 11% 0%
Conditions Partly Cloudy Partly Cloudy Clear Clear
Sunrise & Sunset
5:52 AM
8:25 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [3.06], Average RMSE [2.86]
The National Weather Service forecast quality is poor. MaxT RMSE [3.94], Average RMSE [3.10] : Use NWS
Source: BestForecast at 1:01 AM PDT on May 25, 2012
Descriptive Forecast
Monday
partlycloudy Mostly cloudy in the morning, then clear. High of 68F. Winds from the West at 5 to 15 mph.
Monday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 46F. Winds from the WNW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 51 | 49 63 | 49 64 | 46 51 | 46
Wind 6 mph WNW 10 mph West 11 mph West 7 mph WNW
Humidity 94% 56% 51% 83%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 3% 49% 10% 5%
Conditions Fog Partly Cloudy Clear Clear
Sunrise & Sunset
5:51 AM
8:25 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [3.31], Average RMSE [2.70]
The National Weather Service forecast quality is poor. MaxT RMSE [4.48], Average RMSE [3.12] : Use NWS
Source: BestForecast at 1:01 AM PDT on May 25, 2012
Descriptive Forecast
Tuesday
partlycloudy Partly cloudy. High of 73F. Winds from the West at 5 to 10 mph.
Tuesday Night
nt_partlycloudy Partly cloudy. Low of 50F. Winds from the NW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 51 | 48 66 | 44 70 | 47 55 | 47
Wind 4 mph NW 5 mph WSW 8 mph West 7 mph NW
Humidity 90% 46% 46% 77%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 30% 36% 23% 3%
Conditions Fog Partly Cloudy Clear Clear
Sunrise & Sunset
5:51 AM
8:26 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [3.94], Average RMSE [2.86]
The National Weather Service forecast quality is poor. MaxT RMSE [4.85], Average RMSE [3.09] : Use NWS
Source: BestForecast at 1:01 AM PDT on May 25, 2012
Descriptive Forecast
Wednesday
partlycloudy Partly cloudy. High of 81F. Winds from the WNW at 5 to 10 mph.
Wednesday Night
nt_partlycloudy Partly cloudy. Low of 52F. Winds from the NW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 53 | 49 75 | 51 75 | 50 58 | 50
Wind 5 mph NW 5 mph West 8 mph West 7 mph NW
Humidity 86% 43% 42% 75%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 29% 28% 8% 0%
Conditions Partly Cloudy Partly Cloudy Clear Clear
Sunrise & Sunset
5:51 AM
8:26 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.02], Average RMSE [2.80]
The National Weather Service forecast quality is poor. MaxT RMSE [5.21], Average RMSE [3.03] : Use NWS
Source: BestForecast at 1:01 AM PDT on May 25, 2012
Descriptive Forecast
Thursday
clear Clear. High of 91F. Winds from the West at 5 to 10 mph.
Thursday Night
nt_clear Partly cloudy. Low of 54F. Winds from the NW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 54 | 50 73 | 47 74 | 45 58 | 51
Wind 4 mph NNW 5 mph West 7 mph West 5 mph NW
Humidity 85% 40% 38% 80%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 20% 22% 4% 1%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:51 AM
8:26 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.68], Average RMSE [2.36]
Source: BestForecast at 1:01 AM PDT on May 25, 2012
Descriptive Forecast
Friday
partlycloudy Partly cloudy. High of 79F. Winds from the West at 5 to 10 mph.
Friday Night
nt_clear Partly cloudy. Low of 55F. Winds from the WNW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 55 | 51 72 | 47 72 | 45 55 | 49
Wind 3 mph NW 5 mph WSW 10 mph West 9 mph WNW
Humidity 88% 41% 39% 79%
Chance of Precip. 0% 0% 0% 10%
Cloud Cover 32% 44% 12% 6%
Conditions Partly Cloudy Partly Cloudy Clear Clear
Sunrise & Sunset
5:51 AM
8:26 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.32], Average RMSE [4.05]
Source: BestForecast at 1:01 AM PDT on May 25, 2012
Descriptive Forecast
Saturday
partlycloudy Partly cloudy. High of 77F. Winds from the West at 5 to 15 mph.
Saturday Night
nt_partlycloudy Partly cloudy. Low of 50F. Winds from the WNW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 56 | 53 68 | 48 70 | 49 53 | 47
Wind 7 mph WNW 8 mph West 12 mph West 10 mph WNW
Humidity 87% 48% 49% 80%
Chance of Precip. 10% 10% 10% 10%
Cloud Cover 29% 51% 31% 24%
Conditions Partly Cloudy Partly Cloudy Partly Cloudy Clear
Sunrise & Sunset
5:51 AM
8:26 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.37], Average RMSE [3.97]
Source: BestForecast at 1:01 AM PDT on May 25, 2012
Descriptive Forecast
Sunday
clear Clear. High of 75F. Winds from the WNW at 5 to 15 mph.
Sunday Night
nt_clear Clear. Low of 50F. Winds from the NW at 10 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 52 | 47 68 | 57 68 | 52 53 | 43
Wind 9 mph NW 10 mph WNW 15 mph WNW 12 mph NW
Humidity 85% 67% 54% 67%
Chance of Precip. 10% 0% 0% 0%
Cloud Cover 9% 7% 5% 3%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:51 AM
8:26 PM
Source: BestForecast at 1:01 AM PDT on May 25, 2012
Descriptive Forecast
Monday
clear Clear. High of 77F. Winds from the WNW at 5 to 15 mph.
Monday Night
nt_clear Clear. Low of 50F. Winds from the NW at 10 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 52 | 46 70 | 56 72 | 53 53 | 42
Wind 10 mph NW 9 mph WNW 14 mph WNW 11 mph NW
Humidity 76% 60% 50% 66%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 1% 1% 1% %
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:51 AM
8:26 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
Coastal Water Temperatures
Place Temperature
Point Reyes, CA 50.0 °F
San Francisco, CA 53.1 °F
Richmond, CA 57.9 °F
Marine Forecast
Astronomy
May. 25, 2012 Rise Set
Actual Time 5:53 AM PDT 8:23 PM PDT
Civil Twilight 5:22 AM PDT 8:53 PM PDT
Nautical Twilight 4:45 AM PDT 9:31 PM PDT
Astronomical Twilight 4:03 AM PDT 10:13 PM PDT
Moon 9:56 AM PDT No Moon Set
Length Of Visible Light 15h 31m
Length of Day
14h 30m
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
35 °F
Weaverville
35 °F
Blue Canyon
36 °F
Mount Shasta
37 °F
Alturas
Record Extremes
Snow Depth
Station Depth Elevation
Ward Creek #3 0 in 6750 ft
CSS Lab 0 in 6900 ft
Squaw Valley 206 in 8200 ft
Rubicon #2 1 in 7500 ft
Forestdale Creek 1 in 8029 ft
Snow Depth Reports — Snow Depth Map
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Travel & Activities
Travel Planning
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Nearby Events
Event Date Forecast
37th Annual Blues, BBQ, and Silent Auction 11:00 AM PDT 2012-05-27 Clear, 66°F
Houston Jones 4:00 PM PDT 2012-05-27 Clear, 71°F
Event data courtesy eviesays.com
Aviation
City Temp. Conditions Updated
Novato 50 °F Clear 3:55 AM PDT
Petaluma 46 °F Clear 3:35 AM PDT
Napa County 48 °F Clear 3:54 AM PDT
Santa Rosa 50 °F Clear 3:53 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 (KSTS)
Wind Speed: 11.0 kts.
Wind Dir: 310° (NW)
Ceiling: Unlimited

METAR KSTS 251053Z AUTO 31011KT 10SM CLR 10/03 A2972 RMK AO2 SLP056 T01000028

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
Toyota/Save Mart 350 12:19 PM PDT on June 24, 2012 Average High 81° F/ 27° 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
Point Reyes Mesa bluff, Point Reyes Station, CA 48.7 °F 44 °F 46 °F 89% North  at  10.0 mph 0.00 in / hr 70 ft 4:00 AM PDT Normal  
RAWS BARNABY CA, Forest Knolls, CA 44 °F 39 °F 42 °F 91% West  at  10 mph 0.00 in / hr 810 ft 3:29 AM PDT MADIS
Marin County DPW Corporation Yard, Nicasio, CA 48.0 °F 44 °F 48 °F 100% West  at  8.0 mph 0.00 in / hr 150 ft 4:00 AM PDT Normal
Inverness, CA--First Valley, Inverness, CA 48.2 °F 47 °F 45 °F 90% North  at  4.0 mph 0.00 in / hr 0 ft 4:01 AM PDT Rapid Fire
Tomales Bay Oyster Co. Cove, Marshall, CA 49.5 °F 43 °F 46 °F 89% WNW  at  19.0 mph 0.00 in / hr 7 ft 3:58 AM PDT Normal
Pleasant Valley, Novato, CA 48.8 °F 45 °F 41 °F 75% WNW  at  8.0 mph 0.00 in / hr 213 ft 4:00 AM PDT Normal  
Manor Hill, Fairfax, CA 47.7 °F 48 °F 41 °F 77% WSW  at  2.0 mph 0.00 in / hr 217 ft 4:00 AM PDT Rapid Fire  
MesoWest PT REYES RCA , Inverness, CA 47 °F 39 °F 44 °F 89% NW  at  22 mph 0.00 in / hr 86 ft 3:10 AM PDT MADIS
Hog Island cove - old town Marshall, Marshall, CA 49.0 °F 49 °F 47 °F 91% South  at  3.0 mph 0.00 in / hr 12 ft 3:36 AM PDT Normal  
San Marin, Novato, CA 50.4 °F - 40 °F 69% West  at  1.6 mph 0.00 in / hr 66 ft 3:48 AM PDT Normal  
NOS_NWLON Point Reyes, CA, Inverness, CA 50 °F 43 °F - - WNW  at  23 mph 0.00 in / hr 0 ft 3:24 AM PDT MADIS
Ignacio, Loma Verde, Novato, CA 50.9 °F - 35 °F 55% ESE  at  4.0 mph 0.00 in / hr 100 ft 3:40 AM PDT Normal
Red Hill, San Anselmo, CA 47.7 °F 44 °F 39 °F 72% West  at  7.0 mph 0.00 in / hr 250 ft 3:57 AM PDT Rapid Fire
Marshall, Marshall, CA 49.4 °F 49 °F 47 °F 91% North  at  0.0 mph 0.00 in / hr 59 ft 4:01 AM PDT Rapid Fire  
Venetia Valley K-8 School, San Rafael, CA 49.7 °F 50 °F 43 °F 78% SSW  at  0.0 mph 0.00 in / hr 23 ft 4:01 AM PDT Rapid Fire
Murray Park, Larkspur, CA 50.3 °F - 41 °F 70% North  at  0.0 mph 0.00 in / hr 79 ft 4:00 AM PDT Normal  
MesoWest PT REYES LIGHTHOUSE , Inverness, CA 46 °F 37 °F 44 °F 92% WSW  at  27 mph 0.00 in / hr 525 ft 3:00 AM PDT MADIS
Skylark Heights, Larkspur, CA 50.0 °F - 41 °F 70% North  at  2.2 mph 0.00 in / hr 187 ft 3:44 AM PDT Rapid Fire  
King Mountain, Larkspur, CA 47.8 °F 41 °F 39 °F 72% NNW  at  18.0 mph - / hr 460 ft 3:58 AM PDT Normal  
Throckmorton Ridge Near Mt. Home Inn, Mill Valley, CA 46.0 °F 46 °F 38 °F 72% West  at  0.0 mph 0.00 in / hr 966 ft 4:01 AM PDT Rapid Fire
Middle Two Rock, Petaluma, CA 45.7 °F 40 °F 42 °F 88% WNW  at  12.0 mph 0.00 in / hr 367 ft 3:57 AM PDT Normal  
Downtown Larkspur, Larkspur, CA 50.3 °F - 40 °F 68% West  at  2.7 mph 0.00 in / hr 75 ft 4:00 AM PDT Rapid Fire
APRSWXNET Mill Valley CA , Mill Valley, CA 51 °F - 37 °F 59% SW  at  2 mph 0.00 in / hr 190 ft 3:17 AM PDT MADIS
MesoWest PETALUMA - LYNCH CK , Petaluma, CA 47 °F 47 °F - - North  at  - 0.00 in / hr 9 ft 2:00 AM PDT MADIS
Top of Vista Linda Dr., Mill Valley, CA 50.5 °F - 41 °F 70% SSW  at  5.0 mph 0.00 in / hr 220 ft 3:58 AM PDT Normal  
Country Club, San Rafael, CA 48.3 °F 46 °F 42 °F 79% West  at  6.0 mph 0.00 in / hr 172 ft 4:01 AM PDT Rapid Fire  
Midtown, Petaluma, CA 46.8 °F 47 °F 42 °F 84% South  at  1.0 mph 0.00 in / hr 24 ft 4:01 AM PDT Normal  
Sycamore Park, Mill Valley, CA 51.6 °F - 40 °F 64% SSW  at  2.0 mph 0.00 in / hr 15 ft 3:59 AM PDT Normal  
Horse Hill, Mill Valley, CA 51.4 °F - 37 °F 58% NNW  at  0.0 mph 0.00 in / hr 20 ft 4:00 AM PDT Normal  
MARITIME , Bolinas, CA 49 °F 41 °F - - North  at  27 mph 0.00 in / hr 0 ft 2:50 AM PDT MADIS
RAWS WOODACRE CA, Woodacre, CA 42 °F 33 °F 41 °F 96% WNW  at  21 mph 0.00 in / hr 1399 ft 2:51 AM PDT MADIS
RAWS BIG ROCK CA, San Rafael, CA 44 °F 44 °F 39 °F 83% West  at  0 mph 0.00 in / hr 1500 ft 3:33 AM PDT MADIS
RAWS MIDDLE PEAK CA, Mill Valley, CA 38 °F 26 °F 37 °F 98% SE  at  28 mph 0.00 in / hr 2338 ft 3:32 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