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What are the sources for WeatherOnline forecasts?


The WeatherOnline forecasts are created by using a MOS system developed in-house with the most current US weather services model data (GFS). The statistical methods of the Model-Output-Statistic (MOS)-System were developed in cooperation with the Meteorological Department of the University of Bonn.

What is a MOS-System?


A Model-Output-Statistic (MOS)-System combines the data of the weather forecast model and the locally recorded data for any given point by transforming the model data from a coarse grid to detailed small scale areas.
In order to do so, one needs a large volume of past model forecast data as well as the corresponding recorded data for any given location. The MOS-System relates these two sets of data in an optimized fashion allowing development of the local weather forecast by using the most current model forecast.

What are the time intervals used in the temperature and icons of the local forecasts?


The forecasted maximum temperature always refers to a 12hour window from 6am to 6om local time.
The forecasted minimum temperature always refers to the 12hour window from 6pm of the day before the forecast day to 6 am of the forecast day.
The weather icon for the morning refers to the time between 6am and 12pm local time, the icon for the afternoon is valid from 12am to 6pm local time and the evening icon refers to the time from 6pm to 12am local time.

How often are the current weather conditions and forecasts updated?


The current weather information as well as the satellite images are updated every 30 minutes whereas the radar images are being updated every 15 minutes.
The local weather forecasts as well as the weather charts are updated 8 times a day. The updates start at 2 am CEST or 3 am CEST depending on daylight saving time and continue on a three hourly bases.


Nächste Wetterstation - Petaluma Abstand
Petaluma Flughafen 0.8 km
Marin 8.0 km
Santa Rose Airport 29.0 km
Napa Flughafen 35.6 km
San Francisco Intl. Airport 44.9 km
Half Moon Bay Airport 45.5 km
Metropolitan Oakland Flughafen 52.6 km
San Carlos Airport 58.6 km
Buchanan Field Airport 63.3 km
Hayward Executive Airport 64.1 km
Palo Alto Flughafen 71.2 km
Nut Tree Airport 72.7 km
Travis Air Force Base 74.2 km
Moffett Federal Airfield 78.8 km
Ukiah Flughafen 85.3 km
San José Flughafen 92.0 km
Davis Flughafen 92.1 km
Livermore Municipal Airport 93.1 km
Reid- Hillview Airport 102.8 km
Sacramento Flughafen 115.4 km
Watsonville Flughafen 119.8 km
Red Bluff Municipal Airport 119.9 km
Chico Municipal Airport 123.5 km
Sacramento Executive Airport 123.9 km
Yuba 125.5 km
Monterey Regional Airport 129.4 km
Oroville Municipal Airport 131.2 km
South County Arpt Of Santa Clara County 131.3 km
Sacramento McClellan Airport 135.8 km
Redding Municipal Airport 138.5 km
Beale Air Force Base 139.9 km
Lincoln Flughafen 144.3 km
Salinas Municipal Airport 145.5 km
Sacramento Mather Flughafen 145.8 km
Stockton Metropolitan Airport 151.7 km
Weaverville 154.6 km
Hollister Flughafen 154.7 km
Trinity Center 164.5 km
Auburn Flughafen 173.5 km
Mount Shasta 185.8 km
Nevada 186.7 km
Modesto 187.2 km
Placerville Airport 207.4 km
Siskiyou 211.9 km
Blue Canyon 218.2 km
Rohnerville Airport 221.4 km
Castle Air Force Base 231.8 km
Arcata-Eureka Airport 234.1 km
Merced Regional Airport 238.6 km
Columbia Flughafen 243.6 km
Medford Flughafen 249.5 km
Crater Lake 251.1 km
Paso Robles Municipal Airport 265.8 km
San Luis Obispo County Regional Airport 280.0 km
Truckee Tahoe Airport 281.4 km
Crescent City 282.7 km
Madera Municipal Airport 286.3 km
Lake Tahoe Airport 292.3 km
Alturas Flughafen 297.9 km
Brookings Airport 300.7 km
Vandenberg Space Force Base 304.6 km
Santa Maria Public Airport 308.6 km
Reno Stead Airport 314.0 km
Naval Air Station Lemoore 315.1 km
Lompoc Flughafen 316.0 km
Reno-Tahoe Flughafen 321.7 km
Carson City Flughafen 323.8 km
Fresno Yosemite Intl. Airport 332.1 km
Lake County Airport 334.4 km
Hanford Municipal Airport 350.2 km
Santa Ynez Flughafen 351.3 km
Visalia Municipal Airport 373.0 km
Santa Barbara Municipal Airport 378.5 km
Porterville Flughafen 413.6 km
Mammoth Yosemite Airport 420.2 km
Meadows Field Airport 426.5 km
Naval Air Station Fallon Airport 439.0 km
Hawthorne Industrial Airport 441.8 km
Oxnard Airport 443.5 km
Camarillo Flughafen 453.3 km
Naval Air Station Point Mugu 453.7 km
Derby Field 460.6 km
Eastern Sierra Regional Airport 473.9 km
Sandberg Airport 473.9 km
Tehachapi Municipal Airport 495.4 km
Van Nuys Flughafen 511.7 km
Whiteman Airport 517.0 km
Santa Monica Municipal Airport 520.1 km
Burbank 525.2 km
General William J. Fox Airfield 526.1 km
Mojave Air & Space Port Flughafen 526.7 km
Downtown Los Angeles 540.4 km
San Gabriel Valley Airport 559.4 km