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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 - Williams Abstand
Chico Municipal Airport 49.6 km
Nut Tree Airport 49.7 km
Davis Flughafen 52.4 km
Travis Air Force Base 55.8 km
Napa Flughafen 57.0 km
Oroville Municipal Airport 60.6 km
Red Bluff Municipal Airport 61.7 km
Yuba 63.1 km
Sacramento Flughafen 65.6 km
Buchanan Field Airport 68.6 km
Petaluma Flughafen 74.0 km
Marin 75.4 km
Beale Air Force Base 77.9 km
Sacramento Executive Airport 80.0 km
Redding Municipal Airport 83.2 km
Metropolitan Oakland Flughafen 83.5 km
Santa Rose Airport 84.5 km
Sacramento McClellan Airport 86.0 km
Hayward Executive Airport 86.8 km
Lincoln Flughafen 88.0 km
Livermore Municipal Airport 91.5 km
San Francisco Intl. Airport 94.3 km
San Carlos Airport 96.8 km
Palo Alto Flughafen 98.7 km
Sacramento Mather Flughafen 98.8 km
Moffett Federal Airfield 101.9 km
Half Moon Bay Airport 104.7 km
San José Flughafen 107.3 km
Reid- Hillview Airport 111.8 km
Auburn Flughafen 117.0 km
Ukiah Flughafen 118.8 km
Stockton Metropolitan Airport 121.9 km
Nevada 125.9 km
Trinity Center 126.8 km
Weaverville 130.5 km
Mount Shasta 131.1 km
South County Arpt Of Santa Clara County 134.5 km
Watsonville Flughafen 135.3 km
Monterey Regional Airport 153.7 km
Hollister Flughafen 154.0 km
Placerville Airport 155.4 km
Salinas Municipal Airport 156.6 km
Blue Canyon 157.9 km
Modesto 158.0 km
Siskiyou 161.9 km
Crater Lake 183.5 km
Castle Air Force Base 201.6 km
Columbia Flughafen 201.7 km
Merced Regional Airport 209.4 km
Medford Flughafen 209.9 km
Truckee Tahoe Airport 222.9 km
Alturas Flughafen 224.7 km
Lake Tahoe Airport 238.3 km
Rohnerville Airport 238.8 km
Arcata-Eureka Airport 248.0 km
Reno Stead Airport 253.1 km
Madera Municipal Airport 256.8 km
Lake County Airport 260.6 km
Paso Robles Municipal Airport 261.2 km
Reno-Tahoe Flughafen 262.4 km
Carson City Flughafen 267.3 km
San Luis Obispo County Regional Airport 280.3 km
Roseburg Regional Airport 281.5 km
Crescent City 284.1 km
Naval Air Station Lemoore 291.3 km
Brookings Airport 299.6 km
Fresno Yosemite Intl. Airport 301.1 km
Hanford Municipal Airport 323.0 km
Visalia Municipal Airport 343.9 km
Southwest Oregon Regional Airport 351.5 km
Mammoth Yosemite Airport 376.5 km
Naval Air Station Fallon Airport 382.4 km
Porterville Flughafen 384.3 km
Hawthorne Industrial Airport 390.9 km
Derby Field 400.5 km
Meadows Field Airport 402.0 km
Eastern Sierra Regional Airport 430.8 km
Burns Municipal Airport 434.5 km
Tehachapi Municipal Airport 468.3 km
Mojave Air & Space Port Flughafen 498.2 km

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