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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.


Estaciones meteorológicas cercanas - Ähtäri Distancia
Ähtäri 0.0 km
Alajärvi 56.6 km
Juupajoki 70.2 km
Virrat Aijanneva 77.9 km
Halli 94.9 km
Halli aeropuerto 95.4 km
Halsua Kanala Purola 95.9 km
Tampere 120.5 km
Toholampi 130.9 km
Tampere 133.7 km
Kauhava 143.6 km
Hattula 144.5 km
Seinäjoki 154.9 km
Hämeenlinna 158.6 km
Ylivieska Aeropuerto 161.9 km
Ylivieska Aeropuerto 161.9 km
Jyväskylä 163.8 km
Luhanka Judinsalo 166.1 km
Kronoby 170.1 km
Lammi 175.5 km
Viitasaari 191.9 km
Jokioinen 192.1 km
Pulkkilanharju Lighthouse 193.5 km
Ulkokalla 195.6 km
Ylistaro 196.8 km
Pyhajarvi Ol Ojakyla 205.4 km
Rajamäki 206.8 km
Niinisalo 206.9 km
Kankaanpää 207.6 km
Kokkola Tankar 210.3 km
Nurmijärvi 210.9 km
Haapavesi 210.9 km
Nahkiainen 214.2 km
Vihti 215.5 km
Raahe 217.3 km
Leivonmäki 219.3 km
Kiikala aeropuerto 219.9 km
Mantsala Hirvihaara 221.2 km
Lahti 223.3 km
Pietarsaari Kallan 224.9 km
Kauhajoki 226.7 km
Lohja 233.3 km
Ruukki 238.2 km
Helsinki-Vantaa aeropuerto 239.4 km
Heinola 244.3 km
Kokemäki 245.8 km
Vesanto 246.6 km
Vanhakaupunki 252.1 km
Salo 252.2 km
Marjaniem 256.4 km
Hailuoto 259.7 km
Töölö 259.9 km
Bagaskar 265.1 km
Kirkkonummi Makiluoto 265.6 km
Porvoo 266.0 km
Porvoo Kilpilahti 269.6 km
Oulu aeropuerto 273.3 km
Pellonpää 274.9 km
Vaasa Klemettila 276.8 km
Vaasa aeropuerto 277.8 km
Vihreäsaari 282.1 km
Porvoo Emasalo 283.5 km
Tammisaari Jussaro 285.2 km
Piikkiö 287.2 km
Pori 290.4 km
Pori 291.7 km
Kemi I 293.0 km
Hanko Tvarminne 294.5 km
Turku 299.4 km
Kallbadagrund 300.0 km
Turku Artukainen 311.0 km
Hanko 313.4 km
Russarö 315.5 km
Vaala Pelso 319.2 km
Islas Pakri 320.0 km
Kemi Ajos 320.1 km
Tallin 321.9 km
Turku Rajakari 323.1 km
Pori Tahkoluoto 329.5 km
Kemi 332.0 km
Haparanda 334.4 km
Tornio 336.5 km
Pernaja Orrengrund 337.4 km
Korsnas Bredskaret 340.0 km
Kristinestad Lighthouse 340.8 km
Anjala 342.6 km
Mikkeli 343.5 km
Utti 344.0 km
Storon 346.0 km
Maaninka 350.0 km
Rödkallen 350.2 km
Dragsf Jard Vano 353.6 km
Rauma Kylmapihlaja 354.3 km
Bjuroklubb 354.8 km
Vierema Kaarakkala 359.2 km
Valsörarna 362.6 km
Kuusiku 365.9 km
Nigula 367.0 km
Fagerholm 374.3 km
Rankki 375.5 km