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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.


Estaciones meteorológicas cercanas - Silvan Distancia
Batman 24.7 km
Mardin Aeropuerto 75.6 km
Bingöl 76.3 km
Muş 76.3 km
Muş Aeropuerto 89.7 km
Diyarbakır 91.5 km
Qamishli 94.0 km
Siirt 107.3 km
Hassakah 140.3 km
Erzurum 151.4 km
Erzurum Aeropuerto 154.1 km
Rabiah 165.3 km
Tunceli 181.7 km
Elazığ 194.4 km
Bayburt 199.1 km
Zakho 208.3 km
Erzincan 212.2 km
Tal Afar 220.9 km
Gap Meydan 241.3 km
Şanlıurfa GAP aeropuerto 241.5 km
Duhok 246.1 km
Rize 250.4 km
Ağrı Aeropuerto 258.2 km
Gümüşhane 261.3 km
Van 261.6 km
Sanliurfa 262.9 km
Ağrı 263.8 km
Artvin 270.4 km
Hopa 277.7 km
Trebisonda 277.9 km
Mosul 282.5 km
Adıyaman 283.8 km
Batumi 298.3 km
Bogus Soviet 302.3 km
Tulga Meydan 306.7 km
Kars 309.2 km
Ardahan 311.1 km
Hakkâri 311.5 km
Malatya/Erhac 324.6 km
Anah 331.4 km
Aqrah 340.5 km
Poti 343.7 km
Armavir 362.6 km
Haditha 364.9 km
Ajaltsije 366.8 km
Iğdır 369.7 km
Erbil Aeropuerto 371.5 km
Kutaisi Aeropuerto 374.1 km
Giresun 376.4 km
Zugdidi 379.1 km
Zugdidi 379.1 km
Amasia 383.2 km
Salahadin 384.0 km
Baiji 387.9 km
Kutaisi 388.1 km
Shirak aeropuerto 388.7 km
Maku 394.6 km
Ashotsk 398.9 km
Yerevan Zvartnots 411.2 km
Ashtarak 412.6 km
Gaziantep 414.5 km
Artashat 418.6 km
Ordu 423.1 km
Mta-sabueti 423.8 km
Aparan 425.6 km
Ambrolauri 434.1 km
Kirkuk 436.8 km
Vanadzor 441.8 km
Khoy 442.9 km
Kilis 449.3 km
Urmía 457.2 km
Hrazdan 460.8 km
Chamchamal 477.0 km
Sivas 479.2 km
Bolnisi 480.0 km
Tuz Khurmatu 485.2 km
Lago Seván 487.3 km
Gavar 493.4 km
Najicheván Aeropuerto 503.6 km
Ijeván 512.4 km
Tiflis 512.8 km
Tiflis aeropuerto 525.9 km
Mahabad 536.6 km
Solimania 538.3 km
Khanaqin 576.4 km
Halabja 599.7 km