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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 - Petistrask Distance
Petistrask 0.0 km
Norsjö 52.2 km
Umeå Airport 103.2 km
Lycksele 109.5 km
Arvidsjaur Airport 117.1 km
Arvidsjaur 118.7 km
Jarnasklubb 118.8 km
Mala-Brannan 137.0 km
Vidsel 146.6 km
Örnsköldsvik Airport 147.2 km
Holmöarna 152.0 km
Skellefteå Airport 154.1 km
Fredrika 156.9 km
Hemling 160.3 km
Skagsudde 164.0 km
Tjakaape 190.3 km
Älvsbyn 190.6 km
Valsörarna 192.7 km
Strömmingsbådan 202.3 km
Jokkmokk 207.2 km
Bjuroklubb 209.8 km
Pite-Ronnskar 213.4 km
Vastmarkum 221.0 km
Gunnarn 227.5 km
Buresjon 229.7 km
Korsnas Bredskaret 237.3 km
Lakatraesk 239.6 km
Boden Army Air Base 251.2 km
Arjeplog 260.0 km
Nattavaara 266.1 km
Kramfors Airport 268.1 km
Åsele 268.6 km
Lungo 269.2 km
Vaasa Airport 279.0 km
Latnivaara 287.7 km
Luleå 289.5 km
Gällivare 289.9 km
Kristinestad Lighthouse 295.9 km
Kvikkjokk Arrenjarka 307.8 km
Rödkallen 308.7 km
Vilhelmina 317.3 km
Junsele 320.0 km
Pietarsaari Kallan 326.6 km
Bramon 329.4 km
Sundsvall/Harnosand 330.9 km
Stora Sjöfallet National Park 345.8 km
Kiruna Airport 347.2 km
Nikkaluokta 353.3 km
Ylistaro 353.5 km
Ylistaro 353.5 km
Kauhajoki 355.7 km
Kokkola Tankar 355.9 km
Pori Tahkoluoto 358.5 km
Rensjon 367.0 km
Tarfala Valley 372.9 km
Paharova 374.9 km
Kuggoren 386.8 km
Hoting 389.3 km
Svartbyn 392.5 km
Kronoby 393.2 km
Storon 396.3 km
Pori 396.3 km
Pori 398.5 km
Rauma Kylmapihlaja 398.9 km
Seinäjoki 398.9 km
Kauhava 401.3 km
Saittarova 402.8 km
Ritsem 416.5 km
Niinisalo 417.7 km
Kankaanpää 418.0 km
Krangede 421.0 km
Kustavi Isokari 427.7 km
Ulkokalla 434.8 km
Torpshammar 438.8 km
Katterjakk 439.8 km
Katterjåkk 440.1 km
Dividalen II 441.7 km
Örskär 449.0 km
Märket 452.4 km
Kokemäki 453.6 km
Delsbo 455.6 km
Mierkenis 457.6 km
Jomala 460.6 km
Gubbhogen 463.5 km
Mariehamn / Aland Island 465.8 km
Kumlinge 465.8 km
Straumsnes 466.5 km
Nahkiainen 467.2 km
Eggegrund 468.9 km
Ylinenjarvi 469.9 km
Lumparland Langnas Harbour 470.3 km
Naimakka 475.0 km
Parkalompolo 479.1 km
Virrat Aijanneva 486.4 km
Pajala 493.2 km
Hallhaxasen 493.5 km
Gävle 494.9 km
Film 498.6 km
Karesuando 505.2 km
Turku 508.7 km