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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 - Union City Abstand
Moffett Federal Airfield 10.0 km
Hayward Executive Airport 10.5 km
Palo Alto Flughafen 11.6 km
San José Flughafen 17.9 km
Metropolitan Oakland Flughafen 22.3 km
Buchanan Field Airport 23.7 km
San Carlos Airport 24.4 km
Livermore Municipal Airport 25.1 km
Reid- Hillview Airport 28.3 km
San Francisco Intl. Airport 39.0 km
Travis Air Force Base 41.8 km
Napa Flughafen 46.4 km
Nut Tree Airport 47.1 km
Watsonville Flughafen 47.3 km
Half Moon Bay Airport 52.1 km
South County Arpt Of Santa Clara County 56.8 km
Davis Flughafen 62.2 km
Monterey Regional Airport 62.3 km
Marin 67.1 km
Salinas Municipal Airport 72.3 km
Petaluma Flughafen 75.3 km
Hollister Flughafen 80.3 km
Sacramento Executive Airport 80.7 km
Sacramento Flughafen 81.8 km
Stockton Metropolitan Airport 89.1 km
Sacramento McClellan Airport 94.8 km
Sacramento Mather Flughafen 99.3 km
Yuba 103.0 km
Santa Rose Airport 103.5 km
Lincoln Flughafen 108.5 km
Beale Air Force Base 112.7 km
Modesto 120.6 km
Oroville Municipal Airport 120.8 km
Chico Municipal Airport 131.2 km
Auburn Flughafen 132.3 km
Nevada 149.2 km
Red Bluff Municipal Airport 153.9 km
Placerville Airport 157.1 km
Ukiah Flughafen 159.5 km
Castle Air Force Base 163.5 km
Merced Regional Airport 169.7 km
Redding Municipal Airport 175.4 km
Blue Canyon 176.6 km
Columbia Flughafen 182.1 km
Paso Robles Municipal Airport 191.3 km
San Luis Obispo County Regional Airport 206.0 km
Weaverville 213.4 km
Trinity Center 215.5 km
Madera Municipal Airport 216.3 km
Mount Shasta 223.4 km
Vandenberg Space Force Base 231.4 km
Truckee Tahoe Airport 233.8 km
Santa Maria Public Airport 234.6 km
Lake Tahoe Airport 239.0 km
Lompoc Flughafen 242.4 km
Naval Air Station Lemoore 242.7 km
Siskiyou 254.0 km
Fresno Yosemite Intl. Airport 262.1 km
Reno Stead Airport 268.1 km
Carson City Flughafen 272.1 km
Reno-Tahoe Flughafen 273.4 km
Santa Ynez Flughafen 276.9 km
Hanford Municipal Airport 278.5 km
Alturas Flughafen 281.2 km
Rohnerville Airport 295.2 km
Visalia Municipal Airport 301.8 km
Santa Barbara Municipal Airport 304.0 km
Arcata-Eureka Airport 307.6 km
Porterville Flughafen 342.1 km
Meadows Field Airport 353.6 km
Crescent City 353.8 km
Mammoth Yosemite Airport 355.6 km
Oxnard Airport 369.0 km
Camarillo Flughafen 378.9 km
Naval Outlying Landing Field San Nicolas 379.3 km
Naval Air Station Point Mugu 379.3 km
Hawthorne Industrial Airport 382.2 km
Naval Air Station Fallon Airport 385.0 km
Sandberg Airport 400.4 km
Eastern Sierra Regional Airport 408.4 km
Derby Field 410.3 km
Tehachapi Municipal Airport 422.9 km
Van Nuys Flughafen 437.9 km
Whiteman Airport 443.3 km
Santa Monica Municipal Airport 446.1 km
Burbank 451.5 km
General William J. Fox Airfield 453.2 km
Los Angeles Intl. Airport 454.2 km
Mojave Air & Space Port Flughafen 454.5 km
Hawthorne Municipal Airport 459.7 km
San Clemente Island Flughafen 461.0 km
Zamperini Field 463.4 km
Downtown Los Angeles 466.7 km
Catalina Airport 467.2 km
Long Beach Airport 480.5 km
San Gabriel Valley Airport 485.9 km
Joint Forces Training Base 490.8 km

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