World

North America



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 - Cottonwood Distance
Redding Airport 12.3 km
Red Bluff Airport 14.9 km
Trinity Center 55.3 km
Mount Shasta 59.6 km
Chico Airport 64.0 km
Weaverville 68.7 km
Siskiyou 88.4 km
Oroville Airport 94.6 km
Yuba 112.9 km
Ukiah Airport 118.8 km
Santa Rose Airport 119.8 km
Davis Airport 122.8 km
Beale Air Force Base 123.5 km
Nut Tree Airport 123.8 km
Napa Airport 125.4 km
Petaluma Airport 126.3 km
Sacramento Intl. Airport 127.6 km
Crater Lake 129.2 km
Travis Air Force Base 130.0 km
Marin 131.8 km
Medford Airport 135.8 km
Lincoln Airport 138.5 km
Buchanan Field Airport 142.4 km
Sacramento Executive Airport 142.8 km
Sacramento McClellan Airport 143.4 km
Oakland Intl. Airport 154.3 km
Sacramento Mather Airport 156.2 km
Hayward Executive Airport 159.5 km
San Francisco Intl. Airport 160.9 km
Auburn Airport 161.7 km
Nevada 163.0 km
Livermore Airport 165.7 km
San Carlos Airport 166.9 km
Eddie Andreini Sr. Airfield 168.1 km
Palo Alto Airport 171.2 km
Moffett Federal Airfield 175.2 km
San Jose Intl. Airport 181.4 km
Reid- Hillview Airport 186.1 km
Stockton Metropolitan Airport 187.3 km
Blue Canyon 191.5 km
Rohnerville Airport 199.0 km
Placerville Airport 200.5 km
Arcata 204.4 km
South County Arpt Of Santa Clara County 208.3 km
Roseburg Regional Airport 208.3 km
Watsonville Airport 209.6 km
Alturas Airport 213.6 km
Modesto 221.0 km
Hollister Airport 226.8 km
Monterey Regional Airport 227.7 km
Crescent City 228.0 km
Salinas Airport 230.8 km
Brookings Airport 241.2 km
Lake County Airport 242.1 km
Eugene Airport 248.5 km
Columbia Airport 252.9 km
Truckee Tahoe Airport 253.4 km
Bend Airport 255.7 km
Castle Airport 261.6 km
Roberts Field 265.4 km
Merced Regional Airport 269.5 km
Corvallis Airport 272.9 km
Lake Tahoe Airport 274.5 km
Reno Stead Airport 277.9 km
Prineville Airport 282.1 km
Southwest Oregon Regional Airport 283.9 km
McNary Field Airport 285.0 km
Reno 289.5 km
Carson City Airport 298.4 km
Madera Airport 314.9 km
Newport Airport 321.5 km
Naval Air Station Lemoore 352.0 km
Fresno Yosemite Intl. Airport 356.9 km
Hanford Airport 380.8 km
Visalia Airport 399.9 km
Naval Air Station Fallon Airport 409.4 km
Mammoth Yosemite Airport 419.5 km
Burns Airport 421.3 km
Derby Field 421.4 km
Hawthorne Industrial Airport 425.5 km
Porterville Airport 439.4 km
Grant County Regional Airport 442.6 km
Eastern Sierra Regional Airport 473.3 km