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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 - Halli Distance
Halli 0.0 km
Halli Airport 1.9 km
Juupajoki 57.1 km
Luhanka Judinsalo 79.9 km
Lammi 84.7 km
Hattula 91.2 km
Hämeenlinna 92.7 km
Ähtäri 94.9 km
Pulkkilanharju Lighthouse 99.5 km
Jyväskylä 112.9 km
Tampere 123.6 km
Rajamäki 126.7 km
Lahti 128.5 km
Mantsala Hirvihaara 130.8 km
Nurmijärvi 136.6 km
Alajärvi 139.1 km
Tampere 142.4 km
Leivonmäki 144.3 km
Virrat Aijanneva 148.2 km
Vihti 151.6 km
Heinola 153.7 km
Helsinki Airport 156.0 km
Halsua Kanala Purola 166.2 km
Vanhakaupunki 169.9 km
Viitasaari 171.7 km
Porvoo 172.3 km
Porvoo Kilpilahti 176.7 km
Töölö 177.3 km
Jokioinen 178.8 km
Lohja 183.0 km
Porvoo Emasalo 190.3 km
Kiikala Airport 190.3 km
Kirkkonummi Makiluoto 201.7 km
Kallbadagrund 208.0 km
Vesanto 209.6 km
Toholampi 211.9 km
Bagaskar 213.0 km
Pyhajarvi Ol Ojakyla 215.0 km
Ylivieska Airport 220.9 km
Kauhava 234.4 km
Seinäjoki 235.4 km
Salo 240.5 km
Vaasa Klemettila 241.1 km
Haapavesi 241.3 km
Pernaja Orrengrund 242.9 km
Tammisaari Jussaro 247.2 km
Tallinn 250.6 km
Anjala 251.9 km
Utti 255.8 km
Niinisalo 259.7 km
Kankaanpää 260.1 km
Pakri 263.4 km
Kronoby 265.0 km
Hanko Tvarminne 267.3 km
Mikkeli 268.4 km
Kokemäki 279.5 km
Ylistaro 280.2 km
Rankki 283.3 km
Ulkokalla 285.3 km
Ruukki 287.8 km
Raahe 288.3 km
Piikkiö 291.4 km
Kuusiku 291.5 km
Hanko 295.3 km
Russarö 295.6 km
Kauhajoki 296.9 km
Nahkiainen 297.6 km
Kunda (Port) 304.5 km
Kokkola Tankar 305.2 km
Kotka Haapasaari 308.2 km
Maaninka 308.2 km
Turku 313.1 km
Türi 313.4 km
Nigula 313.8 km
Väike-Maarja Parish 316.1 km
Oulu Airport 316.6 km
Pellonpää 317.7 km
Pietarsaari Kallan 318.1 km
Hailuoto 321.9 km
Marjaniem 323.0 km
Vaala Pelso 324.3 km
Turku Artukainen 324.8 km
Vihreäsaari 324.9 km
Kuopio 332.1 km
Vierema Kaarakkala 335.1 km
Pori 336.2 km
Turku Rajakari 336.4 km
Pori 338.0 km
Juva 343.4 km
Virolahti 346.0 km
Pärnu Airport 349.0 km
Dragsf Jard Vano 353.7 km
Kuopio 353.7 km
Kuopio Ritoniemi 358.4 km
Vaasa Airport 359.3 km
Jõgeva 360.0 km
Viljandi 362.0 km
Virtsu 363.5 km
Kärdla Airport 364.4 km
Kemi I 368.9 km

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