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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 - West Covina Abstand
Brackett Field 11.9 km
Fullerton Municipal Airport 13.6 km
San Gabriel Valley Airport 17.1 km
John Wayne Airport 17.4 km
Joint Forces Training Base 22.2 km
Chino Airport 28.0 km
Long Beach Airport 31.5 km
Ontario Intl. Airport 31.6 km
Corona Flughafen 31.9 km
Grey Butte Field Airport 37.1 km
Palmdale Regional Airport 38.9 km
Downtown Los Angeles 39.0 km
Edwards Air Force Base 46.0 km
Riverside Municipal Airport 48.4 km
Hawthorne Municipal Airport 50.6 km
Edwards 50.7 km
Zamperini Field 51.6 km
Burbank 52.8 km
General William J. Fox Airfield 53.2 km
Los Angeles Intl. Airport 56.2 km
Whiteman Airport 60.8 km
Mojave Air & Space Port Flughafen 62.1 km
Southern California Logistics Airport 62.9 km
Santa Monica Municipal Airport 63.1 km
Catalina Airport 66.0 km
Van Nuys Flughafen 67.6 km
Marine Corps Air Station Camp Pendleton 69.9 km
March Air Reserve Base 70.8 km
San Bernardino Intl. Airport 72.3 km
Oceanside Municipal Airport 72.3 km
Fallbrook Flughafen 78.2 km
McClellan- Palomar Airport 80.8 km
Tehachapi Municipal Airport 85.3 km
Murrieta Hot Springs 87.0 km
Naval Air Weapons Station China Lake 89.3 km
San Clemente Island Flughafen 94.4 km
Naval Air Station North Island 100.5 km
Sandberg Airport 102.2 km
San Diego Intl. Airport 103.6 km
Montgomery-Gibbs Executive Airport 103.8 km
Marine Corps Air Station Miramar 104.3 km
Naval Outlying Landing Field Imperial Beach 113.3 km
Big Bear Airport 115.0 km
Gillespie Field Airport 118.7 km
Ramona Flughafen 118.8 km
Brown Field Municipal Airport 124.8 km
Tijuana Flughafen 126.8 km
Barstow-Daggett Airport 129.6 km
Camarillo Flughafen 134.9 km
Naval Air Station Point Mugu 137.4 km
Oxnard Airport 146.9 km
Meadows Field Airport 150.1 km
Bicycle Lake Army Airfield 153.7 km
Palm Springs Intl. Airport 154.3 km
Porterville Flughafen 169.3 km
Campo 173.0 km
Naval Outlying Landing Field San Nicolas 179.3 km
Eastern Sierra Regional Airport 183.8 km
Jacqueline Cochran Regional Airport 192.1 km
Twentynine Palms Flughafen 192.1 km
Visalia Municipal Airport 208.7 km
Santa Barbara Municipal Airport 218.2 km
Mammoth Yosemite Airport 218.4 km
Tonopah Airport 225.5 km
Hanford Municipal Airport 228.9 km
Mercury/Desert Rock 245.7 km
Santa Ynez Flughafen 246.1 km
Fresno Yosemite Intl. Airport 251.8 km
Naval Air Facility El Centro 252.2 km
Hawthorne Industrial Airport 252.8 km
Naval Air Station Lemoore 261.6 km
Imperial County Airport 262.8 km
Creech Air Force Base Airport 277.7 km
Santa Maria Public Airport 289.7 km
Lompoc Flughafen 289.8 km
Madera Municipal Airport 295.2 km
Vandenberg Space Force Base 303.0 km
Mexicali Intl. Airport 303.1 km
Nuevo León 310.0 km
San Luis Obispo County Regional Airport 314.2 km
North Las Vegas Airport 318.1 km
Paso Robles Municipal Airport 319.0 km
Harry Reid Intl. Airport 319.4 km
Henderson Executive Airport 321.0 km
Nellis Air Force Base 335.7 km
Merced Regional Airport 342.5 km
Boulder City Flughafen 349.7 km
Castle Air Force Base 350.2 km
Lake Tahoe Airport 352.6 km
Blythe Airport 353.1 km
Columbia Flughafen 355.9 km
Needles Airport 365.5 km
San Felipe 368.4 km
Yuma Intl. Airport 370.9 km
Yuma Intl. Airport 370.9 km
Laughlin/Bullhead Intl. Airport 374.2 km
Lake Havasu City Flughafen 393.3 km
Modesto 394.4 km
Placerville Airport 409.6 km
Hollister Flughafen 423.3 km

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