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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.


Nearby Weather Stations - Kostomuksha Distance
Kuhmo Kalliojoki 66.2 km
Kalevala 75.8 km
Reboly 85.0 km
Lieksa 148.6 km
Ilomantsi Pötsönvaara 155.2 km
Ilomantsi Mekrijarvi 188.2 km
Kuusamo 202.1 km
Kuusamo Oulanka 209.2 km
Juuka 211.9 km
Suomussalmi Pesio 212.7 km
Rukatunturi 218.6 km
Kuusamo Kiutakongas 218.9 km
Valtimo 226.0 km
Joensuu 227.9 km
Liperi Tuiskavanluoto 234.4 km
Tohmajärvi 238.8 km
Rautavaara Yla-luosta 255.6 km
Sotkamo 263.5 km
Taivalkoski 280.8 km
Sortavala 285.7 km
Salla Naruska 288.6 km
Kandalaksha 299.8 km
Salla Kk Paloasema 300.8 km
Kovda 311.8 km
Suoyarvi 313.2 km
Salla Varriotunturi 315.3 km
Punkaharju Airport 316.5 km
Valaam 319.9 km
Savonlinna 327.0 km
Kajaani 332.7 km
Padany 336.4 km
Parikkala Koitsanlahti 340.5 km
Rantasalmi Rukkasluoto 345.0 km
Kuopio 356.9 km
Kuopio Ritoniemi 357.0 km
Savukoski 372.0 km
Kuopio 379.0 km
Buldyri 379.4 km
Vierema Kaarakkala 390.8 km
Padun 394.4 km
Monchegorsk 396.7 km
Maaninka 401.2 km
Apatity 404.4 km
Juva 411.2 km
Segezha 413.8 km
Pudasjärvi 415.7 km
Verhov'e R.lotty 418.1 km
Joutseno 423.7 km
Kemijärvi Airport 435.2 km
Olonets 437.1 km
Vyborg 440.3 km
Sodankyla Lokka 443.5 km
Pelkosenniemi 443.8 km
Lappeenranta 445.6 km
Inari Rajajooseppi 449.8 km
Lappeenranta 450.6 km
Umba 452.0 km
Medvezhyegorsk 453.2 km
Kem' - Port 462.7 km
Vaala Pelso 466.1 km
Kondopoga 470.8 km
Vaasa Klemettila 471.9 km
Krenitsy 473.0 km
Raznavolok Cape 475.2 km
Nellim 479.6 km
Murmansk 482.5 km
Mikkeli 482.7 km
Petrozavodsk 485.2 km
Lodeynoye Pole 495.2 km
Vesanto 503.1 km
Sodankyla Vuotso 507.3 km
Saariselkä 509.0 km
Saariselkä 510.3 km
Sodankylä 515.8 km
Virolahti 523.8 km
Ivalo 524.2 km
Rovaniemen mlk Apukka 548.2 km
Utti 555.4 km
Leivonmäki 577.3 km
Kotka Haapasaari 577.9 km
Anjala 579.1 km
Rankki 588.8 km
Vinnitsy-Kalekhovskaya 597.2 km
Heinola 616.2 km
Pernaja Orrengrund 637.4 km