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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.


Nearby Weather Stations - Σαν Φρανσίσκο Απόσταση
Eddie Andreini Sr. Airfield 14.3 km
San Carlos Airport 16.0 km
Oakland International Airport 19.8 km
Hayward Executive Airport 29.8 km
Πάλο Άλτο Αεροδρόμιο 31.0 km
Marin 36.9 km
Napa Airport 37.3 km
Moffett Federal Airfield 39.0 km
Buchanan Field Airport 43.0 km
Petaluma Airport 45.6 km
San Jose International Airport 53.3 km
Travis Air Force Base 63.2 km
Livermore Municipal Airport 63.3 km
Reid- Hillview Airport 65.3 km
Nut Tree Airport 65.6 km
Santa Rose Airport 72.4 km
Watsonville Municipal Airport 78.1 km
Monterey Regional Airport 85.2 km
Davis Airport 85.7 km
South County Arpt Of Santa Clara County 93.1 km
Salinas Municipal Airport 103.6 km
Sacramento International Airport 108.8 km
Sacramento Executive Airport 111.9 km
Hollister Airport 116.4 km
Sacramento McClellan Airport 125.7 km
Yuba 126.1 km
Stockton Metropolitan Airport 127.3 km
Ukiah Airport 128.7 km
Sacramento Mather Airport 132.5 km
Lincoln Airport 137.7 km
Beale Air Force Base 138.4 km
Oroville Municipal Airport 139.2 km
Chico Municipal Airport 141.3 km
Red Bluff Municipal Airport 151.5 km
Modesto 159.6 km
Auburn Airport 164.3 km
Redding Municipal Airport 171.9 km
Nevada 180.1 km
Placerville Airport 192.6 km
Weaverville 197.3 km
Castle Airport 202.5 km
Trinity Center 204.6 km
Merced Regional Airport 208.7 km
Blue Canyon 209.4 km
Mount Shasta 220.4 km
Columbia Airport 220.5 km
Paso Robles Municipal Airport 225.4 km
San Luis Obispo County Regional Airport 238.2 km
Siskiyou 248.7 km
Madera Municipal Airport 255.1 km
Vandenberg Space Force Base 261.8 km
Rohnerville Airport 264.7 km
Santa Maria Public Airport 266.7 km
Truckee Tahoe Airport 269.0 km
Lompoc Airport 273.5 km
Lake Tahoe Airport 275.8 km
Arcata 277.8 km
Naval Air Station Lemoore 280.8 km
Fresno Yosemite International Airport 300.8 km
Reno Stead Airport 303.0 km
Alturas Airport 305.4 km
Κάρσον Σίτι Αεροδρόμιο 308.6 km
Reno 309.0 km
Santa Ynez Airport 310.0 km
Hanford Municipal Airport 316.9 km
Crescent City 327.5 km
Santa Barbara Municipal Airport 337.7 km
Visalia Municipal Airport 340.3 km
Porterville Airport 380.5 km
Meadows Field Airport 391.2 km
Mammoth Yosemite Airport 394.6 km
Oxnard Airport 404.2 km
Naval Outlying Landing Field San Nicolas 411.5 km
Camarillo Airport 414.4 km
Naval Air Station Point Mugu 414.5 km
Hawthorne Industrial Airport 420.6 km
Naval Air Station Fallon Airport 422.3 km
Sandberg Airport 437.4 km
Derby Field 446.7 km
Eastern Sierra Regional Airport 447.4 km
Tehachapi Municipal Airport 460.7 km
Van Nuys Airport 474.4 km
Whiteman Airport 480.0 km
Santa Monica Airport 482.4 km
Μπέρμπανκ 488.3 km
Διεθνές Αεροδρόμιο του Λος Άντζελες 490.6 km
General William J. Fox Airfield 490.8 km
Mojave Air and Space Port Airport 492.5 km
San Clemente Island Airport 495.5 km
Hawthorne Municipal Airport 496.1 km
Zamperini Field 499.6 km
Catalina Airport 502.8 km
Downtown Los Angeles 503.4 km
Long Beach Airport 517.0 km
San Gabriel Valley Airport 522.9 km
Joint Forces Training Base 527.5 km