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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.


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

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