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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.


Stations météo à proximité - Mason Distance
Dayton- Wright Brothers (Aéroport) 7.9 km
Clermont County (Aéroport) 10.4 km
Cincinnati Municipal Lunken (Aéroport) 13.5 km
Dayton (Aéroport) 21.2 km
Butler 24.1 km
Defiance Memorial (Aéroport) 25.3 km
Darke County (Aéroport) 27.4 km
Wright-Patterson Air Force Base 28.4 km
Fulton County (Aéroport) 31.8 km
Lima Allen 33.7 km
London-Corbin (Aéroport) 35.1 km
Blue Grass (Aéroport) 36.3 km
Jackson 36.8 km
Aéroport du comté de Lenawee 37.5 km
Mason Aéroport (Aéroport) 37.7 km
Oak Ridge 37.8 km
Covington Aéroport 41.6 km
Lake Cumberland Regional (Aéroport) 41.6 km
Hillsdale Municipal (Aéroport) 42.0 km
Owosso Community (Aéroport) 44.6 km
Jack Barstow Municipal (Aéroport) 48.0 km
Lansing (Aéroport) 49.7 km
Livingston County Spencer J. Hardy (Aéroport) 51.2 km
McMinn County (Aéroport) 51.7 km
Springfield 52.2 km
Cincinnati West (Aéroport) 52.8 km
MBS Intl. Airport 52.9 km
McGhee Tyson (Aéroport) 53.4 km
Bellefontaine Regional (Aéroport) 54.8 km
Stuart Powell Field 55.6 km
Wilmington Aéroport 55.7 km
Gratiot Community (Aéroport) 60.1 km
Toledo Express (Aéroport) 61.4 km
Fleming-Mason (Aéroport) 62.7 km
Aéroport municipal de Mount Pleasant 66.2 km
Fitch H. Beach (Aéroport) 66.4 km
Wayne County (Aéroport) 67.2 km
Saginaw 67.6 km
Capital City (Aéroport) 67.9 km
Western Carolina Regional (Aéroport) 68.1 km
Middlesboro Aéroport 70.2 km
Ann Arbor Municipal (Aéroport) 70.7 km
Cleveland Regional Jetport 70.7 km
Findlay (Aéroport) 73.1 km
Aéroport international Bishop de Flint 74.2 km
Toledo Suburban (Aéroport) 77.0 km
Brooks Field 78.4 km
Auburn Aéroport 87.5 km
Branch County Memorial (Aéroport) 87.9 km
Tri-State Steuben County (Aéroport) 90.5 km
Willow Run (Aéroport) 91.8 km
Ionia Aéroport 92.4 km
London Madison County Airport 93.5 km
Crossville Aéroport 93.9 km
Toledo Executive (Aéroport) 96.3 km
Custer (Aéroport) 101.1 km
Fort Wayne Intl. Airport 101.6 km
Oakland 105.9 km
Union County (Aéroport) 106.1 km
Lebanon-Springfield (Aéroport) 106.2 km
Tuscola Area (Aéroport) 106.9 km
Harlan Aéroport 108.9 km
W. K. Kellogg (Aéroport) 109.0 km
Chattanooga Metropolitan (Aéroport) 109.3 km
Franklin Aéroport 109.6 km
Morristown Aéroport 109.6 km
Jackson Julian Carr 111.5 km
Aéroport métropolitain de Détroit 113.0 km
Delaware 122.8 km
Lapeer Aéroport 122.9 km
Jonesville Aéroport 124.8 km
Sturgis Aéroport 128.5 km
Huntington Aéroport 129.7 km
Madison Aéroport 129.9 km
Bolton Field 130.0 km
Oakland/Troy (Aéroport) 130.8 km
Grosse Ile Municipal (Aéroport) 132.3 km
Delaware Aéroport 132.4 km
Ohio State University (Aéroport) 137.6 km
Marion Municipal (Aéroport) 138.2 km
Aéroport Gerald R. Ford de Grand Rapids 139.8 km
Roben- Hood (Aéroport) 140.3 km
Kalamazoo/Battle Creek Intl. Airport 142.0 km
Ross Aéroport 142.1 km
Three Rivers Muni Dr Haines 146.2 km
Anderson Municipal (Aéroport) 146.8 km
Coleman A. Young Intl. Airport 148.5 km
Aéroport international Rickenbacker 152.2 km
Bowman Field 152.5 km
Windsor Aéroport 152.7 km
Marion Aéroport 154.0 km
Bad Axe 156.3 km
Aéroport international John Glenn Columbus 158.2 km
Harrow CDA (AUT) 159.3 km
Louisville (Aéroport) 159.9 km
Goshen Municipal (Aéroport) 166.4 km
Shelbyville Municipal (Aéroport) 167.0 km
Selfridge Air National Guard Base 168.2 km
Warsaw Municipal (Aéroport) 172.4 km
Ashland Aéroport 174.2 km