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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.


Stations météo à proximité - Porvoo Distance
Porvoo Emasalo 0.0 km
Porvoo Kilpilahti 14.0 km
Porvoo 19.4 km
Kallbadagrund 22.1 km
Mantsala Hirvihaara 65.2 km
Töölö 73.9 km
Aéroport d'Helsinki-Vantaa 75.1 km
Vanhakaupunki 76.7 km
Lahti 76.9 km
Pernaja Orrengrund 91.2 km
Rajamäki 100.7 km
Pulkkilanharju — ranska Phare 107.7 km
Lammi 108.4 km
Heinola 110.4 km
Nurmijärvi 113.4 km
Kunda (port) 122.8 km
Väike-Maarja 126.0 km
Vihti 139.2 km
Anjala 140.1 km
Türi 141.0 km
Tallinn 143.0 km
Kirkkonummi Makiluoto 145.7 km
Rankki 149.4 km
Hämeenlinna 150.5 km
Luhanka Judinsalo 151.7 km
Kuusiku 159.6 km
Utti 160.7 km
Jõgeva 169.7 km
Hattula 172.3 km
Kotka Haapasaari 172.7 km
Leivonmäki 175.9 km
Lohja 176.4 km
Bagaskar 182.0 km
Viljandi 184.1 km
Halli 190.3 km
Aéroport d'Halli 190.3 km
Îles Pakri 195.4 km
Mustvee 198.2 km
Jõhvi 214.8 km
Jyväskylä 220.8 km
Aérodrome de Pärnu 221.4 km
Kiikala Aéroport 222.5 km
Juupajoki 223.7 km
Tartu 225.9 km
Virolahti 229.3 km
Mikkeli 229.5 km
Tammisaari Jussaro 232.5 km
Rūjiena 234.2 km
Nigula 238.5 km
Jokioinen 245.5 km
Tampere 245.9 km
Valga 246.2 km
Tampere 259.3 km
Hanko Tvarminne 267.9 km
Ainaži 274.4 km
Võru 281.0 km
Salo 281.1 km
Kihnu 283.1 km
Ähtäri 283.5 km
Gdov 285.0 km
Vesanto 288.0 km
Narva 288.6 km
Virtsu 289.4 km
Viitasaari 290.3 km
Priekuļi 291.7 km
Lappeenranta 292.5 km
Lappeenranta 299.0 km
Juva 301.8 km
Russarö 301.9 km
Hanko 305.3 km
Zosēni 308.7 km
Zosēni 308.7 km
Vaasa Klemettila 311.1 km
Alūksne 317.0 km
Virrat Aijanneva 317.1 km
Skulte 322.5 km
Alajärvi 329.2 km
Gulbene 329.2 km
Aérodrome de Kärdla 335.2 km
Joutseno 336.5 km
Kingissepp 340.4 km
Madona 340.5 km
Piikkiö 343.6 km
Maaninka 347.8 km
Kuopio 348.3 km
Vyborg 348.9 km
Halsua Kanala Purola 353.0 km
Pyhajarvi Ol Ojakyla 354.8 km
Ruhnu 360.3 km
Kuopio Ritoniemi 361.4 km
Skrīveri 362.2 km
Kuopio 369.6 km
Zīlāni 370.2 km
Riga Aéroport 371.1 km
Rantasalmi Rukkasluoto 374.9 km
Turku 376.2 km
Kokemäki 380.8 km
Dragsf Jard Vano 384.4 km
Turku Artukainen 385.5 km
Pskov 389.8 km

Situation actuelle