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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 - Slantsy Distance
Narva 24.8 km
Gdov 46.9 km
Kingisepp 62.5 km
Jõhvi 79.1 km
Mustvee 128.3 km
Pskov 135.2 km
Virolahti 146.1 km
Kotka Haapasaari 152.6 km
Tartu 170.6 km
Võru 172.5 km
Vyborg 172.6 km
Rankki 175.2 km
Kunda (Port) 175.2 km
Lappeenranta 189.4 km
Lappeenranta 191.0 km
Jõgeva 191.2 km
Joutseno 195.8 km
Nikolaevskoe 198.5 km
Alūksne 203.1 km
Väike-Maarja Parish 205.9 km
Anjala 210.8 km
Pernaja Orrengrund 214.5 km
Utti 217.7 km
Puskinskie Gory 224.7 km
Siversky 229.3 km
Dno 243.3 km
Opochka 245.4 km
Gulbene 248.1 km
Pulkovo Airport 260.2 km
Valga 263.7 km
Rēzekne 270.4 km
Mikkeli 271.6 km
Juva 273.7 km
Parikkala Koitsanlahti 274.0 km
Viljandi 286.3 km
Kallbadagrund 289.5 km
Savonlinna 292.6 km
Porvoo Emasalo 293.2 km
Rantasalmi Rukkasluoto 293.6 km
Punkaharju Airport 295.8 km
Türi 298.3 km
Porvoo 303.2 km
Madona 305.1 km
Porvoo Kilpilahti 305.8 km
Heinola 306.4 km
Zosēni 312.1 km
Zosēni 312.1 km
Verkhnyadzvinsk 324.6 km
Rūjiena 325.7 km
Lahti 328.8 km
Shlisselburg 334.2 km
Lyuban 351.4 km
Leivonmäki 352.0 km
Daugavpils 352.3 km
Zīlāni 352.7 km
Priekuļi 354.1 km
Mantsala Hirvihaara 355.1 km
Pulkkilanharju Lighthouse 356.3 km
Arkazha 357.3 km
Töölö 359.7 km
Kuopio Ritoniemi 362.4 km
Vanhakaupunki 365.0 km
Polotsk 365.3 km
Helsinki Airport 366.9 km
Kuusiku 373.2 km
Kuopio 374.9 km
Staraya Russa 375.3 km
Sharkawshchyna 376.2 km
Liperi Tuiskavanluoto 378.0 km
Valaam 380.4 km
Kuopio 384.8 km
Joensuu 385.0 km
Luhanka Judinsalo 385.3 km
Sortavala 386.6 km
Velikiye Luki 389.3 km
Lammi 389.9 km
Tallinn 390.5 km
Rajamäki 393.8 km
Tohmajärvi 394.0 km
Kholm 394.1 km
Maaninka 406.0 km
Nurmijärvi 406.2 km
Dūkštas 407.0 km
Pärnu Airport 408.2 km
Skrīveri 410.9 km
Jyväskylä 421.5 km
Juuka 421.9 km
Rautavaara Yla-luosta 422.3 km
Vesanto 423.1 km
Kirkkonummi Makiluoto 423.4 km
Vaasa Klemettila 424.9 km
Vihti 430.3 km
Ainaži 432.1 km
Kirishi 440.9 km
Hämeenlinna 441.8 km
Skulte 447.1 km
Švenčionys 448.3 km
Łyntupy 448.6 km
Pakri 450.9 km
Utena 452.8 km