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 - Troy Distance
Dayton- Wright Brothers Airport 6.1 km
Dayton Intl. Airport 9.5 km
Clermont County Airport 10.8 km
Wright-Patterson Air Force Base 16.9 km
Fulton County Airport 19.6 km
Lima Allen 20.8 km
Lenawee County Airport 24.8 km
Cincinnati Municipal Lunken Airport 26.4 km
Defiance Memorial Airport 28.1 km
Owosso Community Airport 34.2 km
London-Corbin Airport 35.9 km
Butler 36.0 km
Darke County Airport 37.0 km
Mason Jewett Field Airport 37.4 km
Livingston County Spencer J. Hardy Airport 38.2 km
Jackson 38.5 km
Springfield- Beckley Airport 40.9 km
Jack Barstow Airport 41.2 km
MBS Intl. Airport 41.8 km
Bellefontaine Regional Airport 42.6 km
Wilmington Airport 45.1 km
Oak Ridge 45.2 km
Hillsdale Airport 47.3 km
Toledo Express Airport 48.1 km
Blue Grass Airport 49.5 km
Capital Region Intl. Airport 53.5 km
Covington Airport 53.6 km
Fleming-Mason Airport 53.7 km
Saginaw 54.4 km
Lake Cumberland Regional Airport 55.1 km
Ann Arbor Airport 57.3 km
Findlay Airport 60.5 km
Bishop Intl. Airport 60.7 km
Toledo Suburban Airport 63.9 km
Gratiot Community Airport 64.4 km
Cincinnati West Airport 64.5 km
Middlesboro Airport 65.2 km
Stuart Powell Field 68.6 km
Mount Pleasant Airport 70.7 km
Roscommon 71.2 km
Fitch H. Beach Airport 73.4 km
Grayling Airport 77.1 km
Willow Run Airport 78.7 km
Capital City Airport 80.3 km
Wayne County Airport 80.4 km
London Madison County Airport 82.2 km
Toledo Executive Airport 83.6 km
Brooks Field 86.7 km
Custer Airport 88.2 km
Pontiac Oakland 92.7 km
Tuscola Area Airport 93.4 km
Union County Airport 94.5 km
Branch County Memorial Airport 96.9 km
Auburn Airport 97.1 km
Tri-State Steuben County Airport 99.9 km
Detroit Metropolitan Airport 100.1 km
Ionia Airport 100.4 km
Harlan Airport 101.2 km
Jackson Julian Carr 102.7 km
Morristown Airport 102.8 km
Oscoda- Wurtsmith Airport 103.6 km
Lapeer Airport 109.7 km
Fort Wayne Intl. Airport 111.8 km
Jonesville Airport 116.8 km
Oakland/Troy Airport 117.8 km
W. K. Kellogg Airport 118.2 km
Lebanon-Springfield Airport 118.5 km
Bolton Field 118.8 km
Grosse Ile Airport 119.6 km
Delaware Airport 120.9 km
Antrim 122.3 km
Ohio State University Airport 126.2 km
Marion Airport 126.4 km
Ross County Airport 131.2 km
Delaware 133.6 km
Coleman A. Young Intl. Airport 135.8 km
Sturgis Airport 138.4 km
Windsor Airport 140.1 km
Huntington Airport 140.2 km
Rickenbacker Intl. Airport 141.0 km
Madison Airport 141.4 km
Wexford 141.9 km
Bad Axe 143.2 km
Harrow CDA (AUT) 146.8 km
John Glenn Columbus Intl. Airport 146.9 km
Roben- Hood Airport 149.2 km
Gerald R. Ford Intl. Airport 149.3 km
Kalamazoo/Battle Creek Intl. Airport 151.8 km
Selfridge Air National Guard Base 155.5 km
Three Rivers Muni Dr Haines 156.2 km
Anderson Airport 157.7 km
Cherry Capital Airport 160.8 km
Harbor Beach(Ramos) 163.6 km
Ashland Airport 163.8 km
Bowman Field 164.2 km
Marion Airport 164.8 km
Louisville Intl. Airport 171.6 km
Fairfield County Airport 172.6 km
Big Sandy Regional Airport 176.4 km
Goshen Airport 176.8 km