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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 - Tracy Abstand
Stockton Metropolitan Airport 21.4 km
South County Arpt Of Santa Clara County 42.0 km
Livermore Municipal Airport 44.5 km
Sacramento Executive Airport 46.7 km
Hollister Flughafen 47.8 km
Reid- Hillview Airport 49.8 km
Sacramento Mather Flughafen 50.0 km
Modesto 52.2 km
Sacramento McClellan Airport 55.2 km
Sacramento Flughafen 60.2 km
San José Flughafen 60.3 km
Watsonville Flughafen 61.3 km
Davis Flughafen 62.9 km
Salinas Municipal Airport 64.4 km
Travis Air Force Base 65.9 km
Lincoln Flughafen 69.5 km
Nut Tree Airport 70.5 km
Buchanan Field Airport 72.2 km
Moffett Federal Airfield 72.7 km
Hayward Executive Airport 78.0 km
Palo Alto Flughafen 79.3 km
Auburn Flughafen 80.4 km
Monterey Regional Airport 81.9 km
Yuba 82.2 km
Beale Air Force Base 82.2 km
Metropolitan Oakland Flughafen 89.1 km
San Carlos Airport 93.5 km
Placerville Airport 93.8 km
Castle Air Force Base 96.4 km
Nevada 98.4 km
Napa Flughafen 100.5 km
Merced Regional Airport 103.2 km
Oroville Municipal Airport 105.6 km
San Francisco Intl. Airport 107.8 km
Columbia Flughafen 113.0 km
Blue Canyon 119.0 km
Half Moon Bay Airport 121.2 km
Marin 129.3 km
Chico Municipal Airport 129.9 km
Petaluma Flughafen 136.1 km
Paso Robles Municipal Airport 146.4 km
Madera Municipal Airport 150.9 km
Santa Rose Airport 162.9 km
San Luis Obispo County Regional Airport 166.4 km
Truckee Tahoe Airport 169.4 km
Red Bluff Municipal Airport 170.3 km
Lake Tahoe Airport 171.8 km
Naval Air Station Lemoore 181.2 km
Redding Municipal Airport 190.8 km
Santa Maria Public Airport 193.8 km
Vandenberg Space Force Base 195.4 km
Fresno Yosemite Intl. Airport 196.7 km
Lompoc Flughafen 204.1 km
Reno Stead Airport 204.1 km
Carson City Flughafen 205.2 km
Reno-Tahoe Flughafen 208.0 km
Hanford Municipal Airport 215.4 km
Ukiah Flughafen 215.6 km
Santa Ynez Flughafen 231.5 km
Mount Shasta 234.0 km
Visalia Municipal Airport 237.9 km
Alturas Flughafen 238.0 km
Trinity Center 239.7 km
Weaverville 245.6 km
Santa Barbara Municipal Airport 256.3 km
Siskiyou 266.4 km
Porterville Flughafen 278.6 km
Mammoth Yosemite Airport 287.0 km
Meadows Field Airport 292.9 km
Hawthorne Industrial Airport 313.2 km
Oxnard Airport 316.0 km
Naval Air Station Fallon Airport 316.8 km
Camarillo Flughafen 324.9 km
Naval Air Station Point Mugu 326.0 km
Naval Outlying Landing Field San Nicolas 334.3 km
Eastern Sierra Regional Airport 340.1 km
Sandberg Airport 341.4 km
Derby Field 343.1 km
Rohnerville Airport 347.3 km
Arcata-Eureka Airport 358.1 km
Tehachapi Municipal Airport 361.1 km
Van Nuys Flughafen 380.0 km
Whiteman Airport 384.9 km
Santa Monica Municipal Airport 388.8 km
Mojave Air & Space Port Flughafen 392.1 km
General William J. Fox Airfield 392.1 km
Burbank 393.0 km
Los Angeles Intl. Airport 397.0 km
Crescent City 398.0 km
Hawthorne Municipal Airport 402.2 km
Zamperini Field 406.5 km
Downtown Los Angeles 408.2 km
Palmdale Regional Airport 408.5 km
San Clemente Island Flughafen 408.9 km
Catalina Airport 412.3 km
Long Beach Airport 422.6 km
Edwards Air Force Base 422.7 km
Edwards 423.0 km
San Gabriel Valley Airport 426.5 km
Naval Air Weapons Station China Lake 430.3 km

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