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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 - Bülach Distance
Zurich-Kloten 0.5 km
Reckenholz 6.4 km
Zürich 12.1 km
Lägern 14.8 km
Dübendorf Airport 15.8 km
Hallau 24.6 km
Schaffhausen 24.7 km
Wut�schingen-Ofteringen 27.6 km
Cham 33.4 km
Wädenswil 33.8 km
Beznau 34.4 km
Leibstadt 40.4 km
Brugg-Wildegg 40.9 km
Tänikon 41.4 km
Mosen 42.6 km
Singen 44.9 km
Einsiedeln 45.9 km
Hörnli 48.1 km
Lachen 49.3 km
Emmen Airport 50.0 km
Geisingen 50.9 km
Buchs 51.3 km
Lenzkirch 53.3 km
Lucerne 55.9 km
Salen-Reutenen 57.3 km
Buochs Airport 59.0 km
Villingen-Schwenningen 62.8 km
Pilatus 63.5 km
Obergösgen 63.7 km
Alpnach Airport 65.6 km
Altdorf 66.4 km
Egolzwil 67.7 km
Ebnat-Kappel 67.9 km
Rünenberg 72.6 km
Klippeneck 72.8 km
Feldberg 73.0 km
Möhlin 73.6 km
Engelberg 74.1 km
Konstanz 76.1 km
Glarus 77.3 km
Rottweil 77.6 km
Titlis 79.4 km
Giswil 79.6 km
Schüpfheim 82.8 km
Güttingen 84.1 km
Napf 84.5 km
Wynau 87.4 km
Elzach 91.9 km
Meiringen 92.1 km
Naetschen 92.2 km
Disentis/Sedrun 92.6 km
Meßstetten 92.9 km
Hospental 94.0 km
Elm 94.3 km
Säntis 94.5 km
Wolfach 95.9 km
St. Gallen 96.5 km
Freiburg Airport 98.0 km
Langnau im Emmental 100.7 km
Crap Masegn 100.8 km
Grimsel-Hospiz 103.4 km
Sigmaringen 104.7 km
Mundingen 105.8 km
Müllheim 105.8 km
Binningen 105.9 km
Piotta 107.7 km
Freudenstadt 107.7 km
Ilanz 108.8 km
Ulrichen 110.6 km
Koppigen 110.8 km
Friedrichshafen Airport 110.8 km
Hechingen 111.0 km
Lago di Robièi 113.8 km
EuroAirport Basel Mulhouse Freiburg 113.9 km
Rheineck-Altenrhein 114.3 km
Thal 114.4 km
Interlaken 115.9 km
Vaduz 116.3 km
Bad Ragaz Airport 119.5 km
Jungfraujoch 119.7 km
Comprovasco 121.2 km
Feldkirch 122.1 km
Lahr 124.9 km
Matro 125.9 km
Weingarten 126.2 km
Eggishorn 126.3 km
Altheim 126.5 km
Cevio 128.2 km
Binn 128.9 km
Grenchen 128.9 km
Neubulach 129.4 km
Chur-Ems 129.9 km
Zollikofen 130.8 km
Bern-Belp 130.9 km
Delémont 132.6 km
Dornbirn 132.8 km
Wimmis 133.0 km
San Bernardino 133.2 km
Sigmarszell - Zeisertsweiler 134.7 km
Colmar 134.9 km

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