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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.


Najbliższa stacja pogodowa - Walnut Creek Odległość
Buchanan Field Airport 7.8 km
Hayward Executive Airport 16.2 km
Port lotniczy Oakland 23.6 km
Livermore Municipal Airport 24.3 km
Travis Air Force Base 25.3 km
Palo Alto Port lotniczy 26.1 km
Moffett Federal Airfield 26.8 km
Nut Tree Airport 30.4 km
Port lotniczy San Jose 31.6 km
San Carlos Airport 33.2 km
Napa Port lotniczy 35.8 km
Reid- Hillview Airport 38.5 km
Port lotniczy San Francisco 43.4 km
Davis Port lotniczy 46.8 km
Eddie Andreini Sr. Airfield 57.7 km
Watsonville Municipal Airport 60.7 km
Marin 62.3 km
South County Arpt Of Santa Clara County 65.6 km
Port lotniczy Sacramento 67.9 km
Sacramento Executive Airport 69.1 km
Petaluma Port lotniczy 69.5 km
Monterey Regional Airport 77.8 km
Sacramento McClellan Airport 83.1 km
Salinas Municipal Airport 84.3 km
Stockton Metropolitan Airport 85.4 km
Yuba 88.0 km
Hollister Port lotniczy 88.3 km
Sacramento Mather Airport 89.2 km
Lincoln Port lotniczy 95.9 km
Santa Rose Airport 97.1 km
Beale Air Force Base 98.6 km
Oroville Municipal Airport 104.8 km
Chico Municipal Airport 114.4 km
Port lotniczy Modesto 119.5 km
Auburn Port lotniczy 121.4 km
Red Bluff Municipal Airport 137.7 km
Nevada 137.7 km
Placerville Airport 149.2 km
Ukiah Port lotniczy 151.9 km
Redding Municipal Airport 159.2 km
Castle Airport 163.7 km
Blue Canyon 166.4 km
Merced Regional Airport 170.3 km
Columbia Port lotniczy 178.6 km
Weaverville 199.4 km
Paso Robles Municipal Airport 199.8 km
Trinity Center 200.4 km
Mount Shasta 207.1 km
San Luis Obispo County Regional Airport 215.8 km
Madera Municipal Airport 217.7 km
Truckee Tahoe Airport 225.6 km
Lake Tahoe Airport 232.6 km
Siskiyou 237.8 km
Vandenberg Space Force Base 242.1 km
Santa Maria Public Airport 244.4 km
Naval Air Station Lemoore 246.3 km
Lompoc Port lotniczy 252.7 km
Reno Stead Airport 259.6 km
Fresno Yosemite Intl. Airport 263.6 km
Carson City Port lotniczy 265.3 km
Port lotniczy Reno-Tahoe 265.5 km
Alturas Port lotniczy 267.1 km
Hanford Municipal Airport 281.4 km
Santa Ynez Port lotniczy 285.8 km
Rohnerville Airport 286.6 km
Port lotniczy Arcata-Eureka 298.4 km
Visalia Municipal Airport 304.3 km
Santa Barbara Municipal Airport 312.4 km
Crescent City 342.9 km
Porterville Port lotniczy 344.8 km
Mammoth Yosemite Airport 354.0 km
Port lotniczy Bakersfield-Meadows Field 357.7 km
Oxnard Airport 376.0 km
Hawthorne Industrial Airport 378.5 km
Naval Air Station Fallon Airport 379.2 km
Camarillo Port lotniczy 385.6 km
Naval Air Station Point Mugu 386.2 km
Naval Outlying Landing Field San Nicolas 388.6 km
Derby Field 403.4 km
Sandberg Airport 405.3 km
Eastern Sierra Regional Airport 407.3 km
Tehachapi Municipal Airport 426.6 km
Van Nuys Port lotniczy 443.2 km
Whiteman Airport 448.5 km
Santa Monica Airport 451.7 km
Burbank 456.7 km
General William J. Fox Airfield 457.3 km
Mojave Air and Space Port Airport 457.9 km
Port lotniczy Los Angeles 459.9 km
Hawthorne Municipal Airport 465.3 km
San Clemente Island Port lotniczy 468.4 km
Zamperini Field 469.2 km
Downtown Los Angeles 471.9 km
Port lotniczy Catalina 473.8 km
Port lotniczy Long Beach 485.9 km
San Gabriel Valley Airport 490.8 km
Joint Forces Training Base 496.1 km