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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.


Stazioni meteo nelle vicinanze - Porvoo Distanza
Porvoo 1.2 km
Porvoo Kilpilahti 9.8 km
Porvoo Emasalo 18.8 km
Kallbadagrund 40.2 km
Mantsala Hirvihaara 51.5 km
Lahti 58.7 km
Aeroporto di Helsinki-Vantaa 70.8 km
Töölö 75.0 km
Vanhakaupunki 75.9 km
Pulkkilanharju Lighthouse 89.0 km
Rajamäki 91.3 km
Lammi 91.9 km
Pernaja Orrengrund 95.3 km
Heinola 95.9 km
Nurmijärvi 106.1 km
Luhanka Judinsalo 133.1 km
Vihti 133.8 km
Kunda (orificio) 136.7 km
Hämeenlinna 138.2 km
Anjala 138.3 km
Väike-Maarja 143.6 km
Kirkkonummi Makiluoto 146.9 km
Tallinn 151.6 km
Rankki 152.1 km
Utti 157.1 km
Türi 158.7 km
Leivonmäki 159.7 km
Hattula 159.9 km
Kuusiku 172.3 km
Halli Airport 172.4 km
Halli 172.5 km
Lohja 173.2 km
Kotka Haapasaari 176.5 km
Bagaskar 182.0 km
Jõgeva 187.6 km
Arcipelago di Pakri 200.6 km
Viljandi 202.5 km
Jyväskylä 202.6 km
Juupajoki 207.7 km
Mustvee 213.6 km
Kiikala Aeroporto 217.3 km
Mikkeli 221.1 km
Jõhvi 226.1 km
Virolahti 231.2 km
Tammisaari Jussaro 232.7 km
Tampere 233.6 km
Aeroporti in Estonia 234.6 km
Jokioinen 237.9 km
Tartu 243.4 km
Nigula 245.8 km
Tampere 247.7 km
Rūjiena 252.2 km
Valga 265.0 km
Ähtäri 266.1 km
Hanko Tvarminne 267.4 km
Vesanto 271.8 km
Viitasaari 272.4 km
Salo 276.9 km
Ainaži 288.7 km
Lappeenranta 291.4 km
Kihnu 295.1 km
Juva 295.3 km
Vaasa Klemettila 295.6 km
Virtsu 297.5 km
Narva 297.8 km
Gdov 297.9 km
Lappeenranta 298.0 km
Võru 298.4 km
Russarö 301.6 km
Virrat Aijanneva 302.0 km
Hanko 304.6 km
Priekuļi 309.6 km
Alajärvi 311.1 km
Zosēni 327.5 km
Zosēni 327.5 km
Halsua Kanala Purola 334.6 km
Maaninka 334.7 km
Alūksne 334.8 km
Joutseno 336.1 km
Pyhajarvi Ol Ojakyla 336.6 km
Kuopio 337.0 km
Skulte 337.9 km
Aeroporto di Kärdla 339.1 km
Piikkiö 339.4 km
Gulbene 347.7 km
Kingisepp 348.8 km
Vyborg 350.4 km
Kuopio Ritoniemi 351.4 km
Kuopio 358.5 km
Madona 359.3 km
Rantasalmi Rukkasluoto 369.6 km
Ruhnu 370.6 km
Turku 371.3 km
Kokemäki 372.4 km
Haapavesi 378.1 km
Niinisalo 379.3 km
Kankaanpää 379.3 km
Skrīveri 379.9 km
Ylivieska Aeroporto 380.7 km
Turku Artukainen 381.0 km

Situazione attuale