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Norteamérica



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.


Estaciones meteorológicas cercanas - O'Fallon Distancia
Dubuque Regional aeropuerto 4.9 km
Spirit of St. Louis aeropuerto 4.9 km
Macomb Municipal aeropuerto 5.8 km
Corning Aeropuerto 6.6 km
Jonesboro Municipal aeropuerto 6.8 km
Pittsfield 9.4 km
Davenport Municipal aeropuerto 13.5 km
Quad aeropuerto 20.6 km
Fletcher Field 21.5 km
Regional de Walnut Ridge aeropuerto 24.5 km
Poplar Bluff(Amos) 26.1 km
Platteville Municipal aeropuerto 29.1 km
Farmington Aeropuerto 29.7 km
Galesburg Municipal aeropuerto 30.0 km
St. Charles 31.5 km
Washington Aeropuerto 32.7 km
Lambert aeropuerto 37.1 km
Tunica Municipal aeropuerto 39.5 km
Clinton Municipal aeropuerto 40.9 km
Southeast Iowa Regional aeropuerto 46.5 km
Muscatine Municipal aeropuerto 49.2 km
Jacksonville Aeropuerto 51.0 km
Mineral Point 52.0 km
Newport 53.0 km
Quincy Regional aeropuerto 55.7 km
W Memphis Municipal 59.7 km
St. Louis Downtown aeropuerto 61.2 km
Savanna Aeropuerto 65.7 km
Fort Madison 70.6 km
St. Louis Regional aeropuerto 74.4 km
Memphis Aeropuerto 77.9 km
Keokuk Municipal aeropuerto 81.7 km
Hannibal Regional aeropuerto 82.8 km
Arkansas aeropuerto 83.5 km
Mount Pleasant Municipal aeropuerto 90.4 km
Millington-Memphis aeropuerto 92.7 km
Iowa City Municipal aeropuerto 94.0 km
MidAmerica aeropuerto 94.6 km
Stuttgart Municipal aeropuerto 96.8 km
Blytheville Municipal aeropuerto 98.3 km
Olive Branch Aeropuerto 101.6 km
Batesville Aeropuerto 105.9 km
Washington 107.7 km
Sparta 111.3 km
Peoria Aeropuerto 113.2 km
Eastern Iowa aeropuerto 113.4 km
Rock Falls Aeropuerto 113.9 km
Litchfield Municipal aeropuerto 114.2 km
Abraham Lincoln Capital aeropuerto 115.0 km
Searcy Municipal aeropuerto 115.7 km
Rolla National aeropuerto 118.7 km
Monroe Municipal aeropuerto 124.2 km
Freeport Aeropuerto 124.5 km
Cape Girardeau Regional aeropuerto 126.2 km
Sikeston Aeropuerto 127.1 km
University-Oxford aeropuerto 129.4 km
West Plains Regional aeropuerto 133.6 km
Grider Field 137.7 km
Independence Municipal aeropuerto 139.1 km
Oelwen 141.3 km
Fairfield Municipal aeropuerto 143.0 km
Dyersburg Regional aeropuerto 144.7 km
Lacon Aeropuerto 146.0 km
Vinton Aeropuerto 147.8 km
Logan County aeropuerto 151.5 km
Taylorville Aeropuerto 152.6 km
Waynesville-St. Robert Regional aeropuerto 159.6 km
Southern Illinois aeropuerto 161.4 km
Jefferson 161.4 km
Little Rock Air Force Base 161.7 km
Cairo Aeropuerto 164.8 km
Columbia Regional aeropuerto 168.8 km
Nacional de Little Rock aeropuerto 171.3 km
Illinois Valley Regional aeropuerto 172.5 km
Rockford Aeropuerto 178.0 km
Centralia 178.1 km
Rochelle Municipal aeropuerto 180.1 km
Southern Wisconsin Regional aeropuerto 185.4 km
Veterans Airport of Southern Illinois 187.4 km
Waterloo Regional aeropuerto 189.5 km
Everett- Stewart Regional aeropuerto 190.8 km
Salem-Leckrone 193.0 km
Ottumwa Regional aeropuerto 194.9 km
Clinton Aeropuerto 195.2 km
Ozark Regional aeropuerto 196.8 km
Marion 196.8 km
McKellar- Sipes Regional aeropuerto 198.4 km
Central Illinois Regional aeropuerto 198.5 km
Oskaloosa Aeropuerto 199.8 km
Decatur aeropuerto 204.1 km
Mount Vernon aeropuerto 204.1 km
Lee C. Fine Memorial aeropuerto 205.9 km
Kirksville Regional aeropuerto 206.0 km
Tupelo Regional aeropuerto 215.1 km
Barkley Regional aeropuerto 215.2 km
Metropolis Municipal aeropuerto 217.2 km
DeKalb Aeropuerto 221.8 km
Grinnell Aeropuerto 226.5 km
Pontiac Aeropuerto 231.4 km
Roscoe Turner aeropuerto 233.3 km