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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 - Nurmijärvi Distance
Nurmijärvi 1.0 km
Rajamäki 19.6 km
Vihti 29.2 km
Helsinki Airport 39.8 km
Vanhakaupunki 46.4 km
Hämeenlinna 53.5 km
Töölö 53.9 km
Mantsala Hirvihaara 61.8 km
Kirkkonummi Makiluoto 67.6 km
Lammi 70.7 km
Lohja 71.8 km
Hattula 72.0 km
Bagaskar 91.0 km
Porvoo Kilpilahti 102.0 km
Porvoo 107.2 km
Kiikala Airport 111.5 km
Tallinn 113.3 km
Porvoo Emasalo 113.6 km
Kallbadagrund 117.9 km
Lahti 119.1 km
Pulkkilanharju Lighthouse 123.8 km
Pakri 131.5 km
Jokioinen 132.0 km
Halli 137.5 km
Tammisaari Jussaro 138.3 km
Halli Airport 138.7 km
Tampere 140.4 km
Juupajoki 142.2 km
Tampere 150.9 km
Luhanka Judinsalo 154.3 km
Kuusiku 155.4 km
Hanko Tvarminne 169.7 km
Heinola 170.9 km
Salo 171.6 km
Nigula 182.6 km
Türi 190.0 km
Pernaja Orrengrund 201.7 km
Russarö 203.4 km
Hanko 205.6 km
Pärnu Airport 211.6 km
Ähtäri 211.6 km
Leivonmäki 212.5 km
Virrat Aijanneva 222.9 km
Jyväskylä 223.3 km
Väike-Maarja Parish 223.5 km
Kunda (Port) 233.4 km
Piikkiö 233.9 km
Virtsu 234.5 km
Viljandi 239.6 km
Anjala 241.3 km
Kärdla Airport 254.3 km
Kihnu 256.7 km
Utti 257.3 km
Rankki 258.2 km
Jõgeva 263.5 km
Turku 265.3 km
Alajärvi 265.9 km
Kokemäki 267.2 km
Ainaži 268.6 km
Turku Artukainen 275.2 km
Rūjiena 275.6 km
Kankaanpää 279.3 km
Niinisalo 279.4 km
Dragsf Jard Vano 281.0 km
Kotka Haapasaari 282.8 km
Turku Rajakari 284.5 km
Viitasaari 293.2 km
Halsua Kanala Purola 299.1 km
Seinäjoki 301.9 km
Mustvee 304.2 km
Mikkeli 308.4 km
Valga 313.7 km
Vesanto 313.9 km
Ruhnu 316.8 km
Tartu 320.1 km
Kauhava 321.1 km
Skulte 325.1 km
Jõhvi 327.6 km
Ristna 330.0 km
Priekuļi 330.3 km
Fagerholm 330.8 km
Kuressaare Airport 332.3 km
Pori 332.3 km
Pori 334.5 km
Virolahti 336.5 km
Kauhajoki 337.0 km
Toholampi 341.0 km
Vaasa Klemettila 343.0 km
Ylistaro 346.0 km
Pyhajarvi Ol Ojakyla 346.5 km
Ylivieska Airport 357.5 km
Kolka 361.6 km
Riga Airport 364.5 km
Mērsrags 364.9 km
Zosēni 366.4 km
Zosēni 366.4 km
Kronoby 368.2 km
Utö 371.0 km
Võru 374.5 km
Haapavesi 377.3 km

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