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Amérique du Nord



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.


Stations météo à proximité - Grass Valley Distance
Nevada 0.5 km
Auburn Aéroport 17.8 km
Blue Canyon 31.8 km
Placerville (Aéroport) 39.3 km
Lincoln Aéroport 42.9 km
Beale Air Force Base 48.5 km
Sacramento Mather (Aéroport) 50.9 km
Sacramento McClellan (Aéroport) 54.7 km
Yuba 63.4 km
Sacramento Executive (Aéroport) 68.7 km
Oroville Municipal (Aéroport) 71.0 km
Sacramento (Aéroport) 72.3 km
Stockton Metropolitan (Aéroport) 80.7 km
Modesto 90.9 km
Columbia Aéroport 93.8 km
Davis Aéroport 96.1 km
Truckee Tahoe (Aéroport) 96.6 km
Chico Municipal (Aéroport) 100.2 km
Lake Tahoe (Aéroport) 113.2 km
Castle (Aéroport) 115.1 km
Nut Tree (Aéroport) 116.7 km
Travis Air Force Base 117.7 km
Merced (Aéroport) 122.5 km
Livermore Municipal (Aéroport) 126.5 km
Aéroport Reno Stead 127.6 km
Reno-Tahoe (Aéroport) 136.4 km
Buchanan Field (Aéroport) 137.2 km
Alturas Aéroport 140.0 km
South County Arpt Of Santa Clara County 140.2 km
Carson City Aéroport 141.1 km
Hollister Aéroport 141.6 km
Reid- Hillview (Aéroport) 142.1 km
San José (Aéroport) 149.1 km
Red Bluff Municipal (Aéroport) 149.4 km
Hayward Executive (Aéroport) 153.6 km
Napa Aéroport 154.1 km
Moffett Federal Airfield 157.0 km
Watsonville Municipal (Aéroport) 158.5 km
Aéroport international d'Oakland 160.7 km
Palo Alto Aéroport 160.8 km
Madera Municipal (Aéroport) 160.9 km
Salinas Municipal (Aéroport) 161.9 km
Redding Municipal (Aéroport) 163.0 km
San Carlos (Aéroport) 170.9 km
Aéroport régional de Monterey 179.7 km
San Francisco (Aéroport) 180.2 km
Lake County (Aéroport) 180.5 km
Marin 184.3 km
Petaluma Aéroport 187.3 km
Crater Lake 187.7 km
Mont Shasta 191.1 km
Eddie Andreini Sr. Airfield 194.5 km
Fresno Yosemite (Aéroport) 198.5 km
Naval Air Station Lemoore 200.4 km
Santa Rose Airport 206.4 km
Paso Robles Municipal (Aéroport) 206.5 km
Trinity Center 215.2 km
Siskiyou 221.9 km
Hanford Municipal (Aéroport) 224.1 km
San Luis Obispo County Regional (Aéroport) 230.4 km
Weaverville 232.2 km
Visalia Municipal (Aéroport) 241.0 km
Ukiah Aéroport 245.1 km
Naval Air Station Fallon Aéroport 256.2 km
Mammoth Yosemite (Aéroport) 256.3 km
Hawthorne Industrial (Aéroport) 266.0 km
Derby Field 274.9 km
Medford Aéroport 278.5 km
Porterville Aéroport 279.3 km
Meadows Field (Aéroport) 302.5 km
Eastern Sierra Regional (Aéroport) 310.3 km
Burns Municipal (Aéroport) 333.1 km
Roseburg Regional (Aéroport) 353.6 km
Rohnerville (Aéroport) 357.8 km
Tehachapi Municipal (Aéroport) 363.2 km
Aéroport d'Arcata-Eureka 365.0 km
Winnemucca Aéroport 367.9 km
Aéroport et port spatial de Mojave Aéroport 390.7 km
Crescent City 391.4 km
Rome State (Aéroport) 394.3 km
Brookings Aéroport 404.4 km
Naval Air Weapons Station China Lake 416.3 km
Tonopah (Aéroport) 440.5 km
Southwest Oregon Regional (Aéroport) 440.8 km
Bicycle Lake Army Airfield 530.1 km
Caldwell Aéroport 540.4 km
Nampa Municipal (Aéroport) 550.2 km
Mercury/Desert Rock 571.6 km
Boise Aéroport 580.5 km

Situation actuelle