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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 - Hanko Tvarminne Distance
Hanko Tvarminne 2.0 km
Russarö 32.3 km
Hanko 35.6 km
Tammisaari Jussaro 37.8 km
Salo 56.9 km
Kiikala Airport 79.3 km
Bagaskar 87.8 km
Piikkiö 94.8 km
Kärdla Airport 97.2 km
Lohja 100.0 km
Pakri 100.6 km
Jokioinen 104.8 km
Nigula 110.9 km
Dragsf Jard Vano 115.8 km
Kirkkonummi Makiluoto 124.5 km
Turku 128.5 km
Virtsu 132.8 km
Turku Artukainen 133.6 km
Turku Rajakari 138.4 km
Vihti 142.7 km
Tallinn 157.1 km
Ristna 160.4 km
Tampere 166.4 km
Nurmijärvi 172.4 km
Fagerholm 173.1 km
Kokemäki 175.5 km
Tampere 176.2 km
Hattula 178.4 km
Kuressaare Airport 183.1 km
Hämeenlinna 183.6 km
Kuusiku 188.8 km
Rajamäki 191.2 km
Vanhakaupunki 193.6 km
Töölö 195.9 km
Kihnu 196.3 km
Helsinki Airport 199.1 km
Pärnu Airport 199.1 km
Utö 206.0 km
Ruhnu 209.7 km
Vilsandi 217.3 km
Kankaanpää 223.1 km
Niinisalo 223.8 km
Kolka 224.9 km
Pori 231.7 km
Mantsala Hirvihaara 232.6 km
Pori 233.9 km
Lammi 236.2 km
Juupajoki 236.2 km
Sõrve peninsula 236.6 km
Ainaži 236.7 km
Rauma Kylmapihlaja 253.8 km
Mērsrags 256.2 km
Virrat Aijanneva 257.1 km
Porvoo Kilpilahti 262.2 km
Kustavi Isokari 263.0 km
Kallbadagrund 263.9 km
Türi 264.0 km
Halli 269.2 km
Porvoo Emasalo 269.7 km
Porvoo 270.3 km
Halli Airport 271.0 km
Pori Tahkoluoto 277.5 km
Kumlinge 279.8 km
Stende 282.2 km
Skulte 289.4 km
Kauhajoki 289.6 km
Lahti 290.8 km
Pulkkilanharju Lighthouse 293.1 km
Ähtäri 296.1 km
Seinäjoki 297.0 km
Viljandi 302.5 km
Riga Airport 306.1 km
Rūjiena 309.3 km
Ventspils 314.0 km
Luhanka Judinsalo 316.1 km
Ventspils Intl. Airport 316.7 km
Bogskär 322.8 km
Jelgava 327.0 km
Lumparland Langnas Harbour 328.1 km
Dobele 328.7 km
Ylistaro 329.0 km
Saldus 333.2 km
Kristinestad Lighthouse 335.3 km
Kauhava 337.1 km
Väike-Maarja Parish 341.4 km
Heinola 342.6 km
Priekuļi 346.6 km
Alajärvi 350.9 km
Pernaja Orrengrund 360.7 km
Jomala 363.2 km
Nyhamn 363.9 km
Bauska 364.0 km
Vaasa Airport 368.9 km
Jõgeva 369.6 km
Kunda (Port) 370.6 km
Mažeikiai 371.4 km
Mariehamn / Aland Island 371.9 km
Valga 374.4 km
Jyväskylä 376.8 km
Pāvilosta 379.3 km

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