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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 - Sepänkylä Distance
Vanhakaupunki 23.6 km
Helsinki Airport 28.5 km
Töölö 28.6 km
Nurmijärvi 32.4 km
Rajamäki 40.8 km
Vihti 43.4 km
Kirkkonummi Makiluoto 51.3 km
Mantsala Hirvihaara 67.0 km
Lohja 76.3 km
Bagaskar 84.2 km
Tallinn 84.3 km
Hämeenlinna 85.2 km
Porvoo Kilpilahti 91.4 km
Lammi 92.7 km
Kallbadagrund 98.9 km
Porvoo 99.3 km
Porvoo Emasalo 100.2 km
Hattula 103.1 km
Pakri 112.7 km
Kiikala Airport 123.6 km
Kuusiku 124.7 km
Lahti 126.5 km
Tammisaari Jussaro 134.8 km
Pulkkilanharju Lighthouse 138.6 km
Jokioinen 150.9 km
Türi 158.9 km
Nigula 162.8 km
Halli 166.9 km
Halli Airport 168.0 km
Tampere 169.0 km
Hanko Tvarminne 169.2 km
Juupajoki 173.9 km
Luhanka Judinsalo 174.3 km
Heinola 177.7 km
Tampere 177.9 km
Salo 181.3 km
Pärnu Airport 182.6 km
Pernaja Orrengrund 191.2 km
Väike-Maarja Parish 198.4 km
Russarö 203.4 km
Hanko 206.4 km
Viljandi 208.4 km
Kunda (Port) 213.5 km
Virtsu 215.4 km
Leivonmäki 226.9 km
Kihnu 231.0 km
Anjala 236.5 km
Jõgeva 236.9 km
Ainaži 239.8 km
Ähtäri 243.3 km
Piikkiö 243.6 km
Rūjiena 243.9 km
Kärdla Airport 245.0 km
Jyväskylä 245.5 km
Rankki 249.2 km
Virrat Aijanneva 253.5 km
Utti 254.7 km
Kotka Haapasaari 272.9 km
Turku 276.5 km
Mustvee 280.9 km
Valga 282.9 km
Dragsf Jard Vano 284.8 km
Turku Artukainen 285.6 km
Kokemäki 286.1 km
Tartu 293.0 km
Turku Rajakari 294.1 km
Ruhnu 295.5 km
Skulte 295.7 km
Alajärvi 297.3 km
Priekuļi 298.6 km
Kankaanpää 303.1 km
Niinisalo 303.3 km
Jõhvi 309.2 km
Mikkeli 313.0 km
Viitasaari 316.4 km
Kuressaare Airport 318.8 km
Ristna 324.5 km
Virolahti 328.8 km
Halsua Kanala Purola 330.1 km
Seinäjoki 331.0 km
Vesanto 332.7 km
Zosēni 334.9 km
Zosēni 334.9 km
Riga Airport 336.5 km
Fagerholm 337.9 km
Mērsrags 342.9 km
Kolka 344.6 km
Võru 346.9 km
Pori 351.3 km
Kauhava 351.7 km
Pori 353.5 km
Vaasa Klemettila 360.7 km
Skrīveri 361.8 km
Kauhajoki 362.8 km
Pyhajarvi Ol Ojakyla 372.1 km
Toholampi 372.4 km
Madona 374.0 km
Vilsandi 374.3 km
Jelgava 374.3 km
Ylistaro 374.7 km

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