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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 - Trollhättan Distance
Trollhattan Lufthavn 0.0 km
Kroppefjall-Granan 35.1 km
Satenas 42.7 km
Göteborg / Landvetter 70.9 km
Gothenburg 76.0 km
Hallum 76.1 km
Naven 95.0 km
Luro Automated 100.7 km
Blomskog 102.3 km
Rångedala 107.8 km
Vinga Lighthouse 111.5 km
Måseskär 115.6 km
Nidingen 121.5 km
Ullared 139.0 km
Väderöarna 145.7 km
Arvika 150.1 km
Koster Islands 163.2 km
Karlstad Airport 164.5 km
Torpup 168.2 km
Sarpsborg 173.4 km
Skovde AP 180.5 km
Halmstad Airport 185.4 km
Sunne 188.7 km
Stromtangen Lh 192.3 km
Aurskog 193.7 km
Anholt 197.8 km
Skagen 201.5 km
Jonkoping AP 202.5 km
Hallands Väderö 204.1 km
Kongsvinger 207.4 km
Rygge 209.6 km
Ferder 216.8 km
Ängelholm 226.0 km
Hagshult 227.0 km
Ås 227.9 km
Visingsö 231.3 km
Gullholmen 231.9 km
Kjeller Airport 232.0 km
Ljungby 233.3 km
Gardsjo 234.5 km
Oseberg 238.0 km
Nakkehoved 239.0 km
Karlsborg Air Base 241.1 km
Melsomvik 244.1 km
Stenhoj 246.4 km
Axstal 248.2 km
Oslo Airport 249.8 km
Daglosen 251.1 km
Torp 251.2 km
Tomtabacken 251.7 km
Helsingborg 252.4 km
Flisa Ii 252.8 km
Sindal Airport 253.7 km
Blindern 253.7 km
Langoytangen 255.3 km
Gustavsfors 256.1 km
Hakadal 259.3 km
Ljungbyhed Airport 260.8 km
Tryvasshogda 261.0 km
Bjornholt 264.6 km
Sjaelsmark 265.4 km
Asker 271.4 km
Sande-galleberg 277.0 km
Jægersborg 277.9 km
Gniben Point 278.4 km
Hästveda 283.3 km
Kongsberg 288.9 km
Aarhus/Tirstrup 290.0 km
Holbæk 293.1 km
Drammen Berskog 293.3 km
Tylstrup 294.1 km
Copenhagen Airport 295.3 km
Malung 297.2 km
Koebenhavn/Roskilde 298.3 km
Kettstaka 301.8 km
Kilsbergen-Suttarboda 303.1 km
Hörby 303.5 km
Växjö Airport 304.3 km
Hamar 304.6 km
Dragør Lighthouse 304.8 km
Hamar Airport 307.7 km
Apelsvoll 307.8 km
Malmö 308.8 km
Aalborg 308.8 km
Hønefoss 309.1 km
Jomfruland Lh 314.4 km
Örebro Airport 314.9 km
Hald 316.1 km
Örebro 316.5 km
Sletterhage 317.0 km
Kise Pa Hedmark 318.3 km
Tesseboelle 318.6 km
Växjö 318.6 km
Malexander 322.1 km
Falsterbo 322.9 km
Kristianstad Airport 323.8 km
Malmö Airport 324.1 km
Trysil Vegstasjon 324.1 km
Rosnaes Cape 325.4 km
Rena-Haugedalen 325.8 km