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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 - Sylt Distance
List/Sylt 0.8 km
Westerland/Sylt 14.2 km
Romo Island 24.9 km
Vester Vedsted 40.2 km
Esbjerg 59.3 km
Leck 64.5 km
Blavand Cape 70.2 km
Sankt Peter-Ording 78.6 km
Hattstedt 87.6 km
Askov 92.2 km
Vojens Airport 96.9 km
Borris 106.3 km
Stauning Airport 107.5 km
Helgoland/Düne 109.6 km
Vamdrup 111.9 km
Hvide Sande 113.3 km
Billund Airport 114.8 km
Glücksburg/Meierwik 123.0 km
Elpersbüttel 123.5 km
Erfde 127.7 km
Cuxhaven 130.1 km
Alte Weser Lighthouse Lighthouse 131.3 km
Schleswig 137.0 km
Jagel 137.4 km
Nordholz 140.4 km
Feuerschiff Deutsche Bucht 142.7 km
Isenvad 145.9 km
Hohn 146.9 km
Hohn 146.9 km
Sønderborg Airport 152.2 km
Mejrup 153.0 km
Steinau 153.5 km
Wangerland 155.3 km
Karup 161.3 km
Bremerhaven 164.3 km
Toroe 165.7 km
Itzehoe 170.9 km
Ostenfeld 173.0 km
Kegnæs 175.9 km
Horsens 179.0 km
Wittmund Airport 181.9 km
Schönhagen 183.6 km
Thyborøn 187.5 km
Bremervörde 190.7 km
Padenstedt (Pony-Park) 200.9 km
Hüttenbusch 201.2 km
Norderney 201.3 km
Kiel/Holtenau 204.7 km
Silstrup 212.0 km
Kiel Lighthouse 214.4 km
Quickborn 215.3 km
Odense 219.4 km
Bremen Airport 221.2 km
Friesoythe - Altenoythe 222.6 km
Emden Airport 223.0 km
Aarhus Syd 224.2 km
Aalestrup 226.5 km
Airbus Hamburg-Finkenwerder 226.8 km
Årslev 227.5 km
Großenkneten 230.3 km
Rotenburg an der Wümme 231.6 km
Fuhlsbüttel 231.8 km
Dörnick 234.8 km
Wittenborn 235.1 km
Oedum 237.1 km
Svendborg Airport 239.6 km
Nieuw-Beerta 245.0 km
Borkum Airport 246.9 km
Hald 252.2 km
Sletterhage 261.8 km
Hohwacht 263.0 km
Diepholz Airport 267.6 km
Soltau 273.1 km
Nienburg 273.2 km
Aalborg 278.4 km
Fliegerhorst Meppen 280.5 km
Meppen 281.7 km
Kleinendorf 283.2 km
Alfhausen 284.3 km
Rosnaes Cape 284.5 km
Aarhus/Tirstrup 285.1 km
Lübeck/Blankensee 286.9 km
Langoe 287.7 km
Groningen-Eelde 291.3 km
Pelzerhaken/Neustadt i.H. 292.2 km
Tylstrup 293.3 km
Bergen 294.5 km
Grambek 298.2 km
Belm 298.7 km
Westermarkelsdorf 299.1 km
Lingen 301.9 km
Wendisch Evern 302.7 km
Wunstorf 303.0 km
Omø 303.0 km
Lauwersoog 303.5 km
Faßberg 303.6 km
Boizenburg 309.4 km
Bückeburg 310.1 km
Hanover Airport 313.8 km
Barsinghausen 317.4 km