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América do Norte



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.


Estações Meteorológicas Próximas - Williston Distância
Sloulin Field Intl. Airport 3.7 km
Crosby Aeroporto 39.1 km
Watford City Aeroporto 39.7 km
Weyburn 46.1 km
Beach Aeroporto 53.8 km
Indian Head CDA 62.7 km
Sidney- Richland Municipal Airport 67.9 km
Buffalo 68.5 km
Estevan Aeroporto 75.4 km
Tioga Aeroporto 78.4 km
Baker Municipal Airport 87.4 km
Dickinson Theodore Roosevelt Regional Airport 95.6 km
Black Hills Airport 99.2 km
Rapid City Aeroporto 113.7 km
Wynyard 117.1 km
Ellsworth Air Force Base 117.3 km
Hettinger Municipal Airport 118.9 km
Broadview Airport 127.3 km
Regina Aeroporto 133.8 km
Regina 133.8 km
Bratt'S Lake 134.4 km
Dawson Community Airport 136.5 km
Hulett Aeroporto 143.5 km
Yorkton Aeroporto 148.4 km
Yorkton Aeroporto 148.6 km
Yorkton Aeroporto 148.6 km
Melfort 168.1 km
Hudson Bay Airport 184.0 km
Faith 192.4 km
Glen Ullin Aeroporto 196.5 km
Last Mountain CS 204.5 km
Pilger 208.6 km
Coronach 211.1 km
L. M. Clayton Airport 220.8 km
Watrous East 222.8 km
Moose Jaw 225.2 km
Mercer County Regional Airport 225.8 km
Moose Jaw 226.3 km
Gillette 240.2 km
Garrison 241.5 km
Philip Aeroporto 243.9 km
Minot Air Force Base 250.5 km
Minot Intl. Airport 257.9 km
Miles City Airport 258.7 km
Roblin 258.9 km
Assiniboia Airport 263.5 km
Rockglen 266.8 km
Swan River 279.8 km
Melita 292.5 km
Mandan Aeroporto 303.0 km
Bismarck Municipal Airport 318.9 km
Glasgow Aeroporto 335.8 km
Shoal Lake CS 338.1 km
Elbow 342.9 km
Mobridge Aeroporto 357.7 km
Saskatoon AP 362.2 km
Buffalo Aeroporto 363.8 km
Saskatoon Rcs 366.1 km
Jordan Airport 371.9 km
Linton Aeroporto 376.1 km
Pierre Regional Airport 379.2 km
Sheridan Aeroporto 387.7 km
Outlook 396.1 km
Rugby Aeroporto 398.1 km
Dauphin 399.9 km
Lucky Lake 403.5 km
Brandon Aeroporto 408.2 km
Harvey Aeroporto 408.4 km
Wasagaming 412.0 km
Rolla Aeroporto 443.2 km
Val Marie Southeast 444.2 km
Wilson Creek Weir CS 456.2 km
Swift Current Airport 458.9 km
Swift Current 464.4 km
Carberry 474.6 km
Cando Aeroporto 485.8 km
Rosetown East 491.2 km
Cypress River 504.7 km