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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 - Hallau Distance
Hallau 1.6 km
Wut�schingen-Ofteringen 9.7 km
Schaffhausen 17.1 km
Lägern 23.2 km
Zurich-Kloten 23.7 km
Reckenholz 28.7 km
Beznau 29.5 km
Lenzkirch 32.3 km
Leibstadt 32.4 km
Geisingen 34.3 km
Zürich 35.4 km
Dübendorf Airport 37.3 km
Villingen-Schwenningen 40.4 km
Singen 40.4 km
Brugg-Wildegg 41.0 km
Tänikon 53.7 km
Buchs 54.0 km
Cham 54.5 km
Mosen 55.0 km
Feldberg 55.7 km
Klippeneck 56.4 km
Wädenswil 56.7 km
Rottweil 58.0 km
Salen-Reutenen 61.8 km
Hörnli 64.1 km
Obergösgen 65.3 km
Möhlin 66.7 km
Emmen Airport 67.5 km
Einsiedeln 68.6 km
Elzach 69.3 km
Rünenberg 70.5 km
Lachen 70.6 km
Wolfach 72.7 km
Lucerne 73.9 km
Egolzwil 75.7 km
Buochs Airport 79.1 km
Freiburg Airport 79.7 km
Konstanz 80.5 km
Meßstetten 80.7 km
Pilatus 80.8 km
Alpnach Airport 84.0 km
Ebnat-Kappel 84.3 km
Freudenstadt 85.1 km
Mundingen 86.0 km
Altdorf 89.4 km
Wynau 89.8 km
Güttingen 90.9 km
Müllheim 93.1 km
Napf 95.0 km
Engelberg 95.1 km
Schüpfheim 95.6 km
Hechingen 96.3 km
Giswil 96.9 km
Glarus 97.9 km
Sigmaringen 98.5 km
Binningen 99.5 km
Titlis 100.6 km
Lahr 103.4 km
EuroAirport Basel Mulhouse Freiburg 106.2 km
St. Gallen 107.5 km
Neubulach 109.0 km
Säntis 109.3 km
Meiringen 109.9 km
Langnau im Emmental 110.1 km
Koppigen 114.3 km
Elm 114.9 km
Naetschen 115.0 km
Disentis/Sedrun 115.8 km
Friedrichshafen Airport 116.3 km
Hospental 116.6 km
Memprechtshofen 120.7 km
Colmar 121.5 km
Altheim 121.9 km
Crap Masegn 121.9 km
Thal 123.7 km
Rheineck-Altenrhein 123.7 km
Grimsel-Hospiz 123.9 km
Renningen Ihinger Hof 126.8 km
Karlsruhe/Baden-Baden Airport 128.2 km
Weingarten 129.1 km
Grenchen 129.6 km
Delémont 129.6 km
Interlaken 129.7 km
Ilanz 130.1 km
Piotta 130.7 km
Ulrichen 131.0 km
Vaduz 132.0 km
Strasbourg/Entzheim 133.2 km
Feldkirch 135.1 km
Zollikofen 135.2 km
Lago di Robièi 135.9 km
Jungfraujoch 136.0 km
Bad Ragaz Airport 136.6 km
Bern-Belp 136.8 km
Münsingen Apfelstetten 136.9 km
Stuttgart Airport 139.0 km
Sigmarszell - Zeisertsweiler 142.2 km
Wimmis 142.2 km
Rheinstetten 142.8 km
Dornbirn 142.8 km