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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.


Stations météo à proximité - Tatvan Distance
Siirt 60.9 km
Muş Aéroport 74.4 km
Muş 89.6 km
Van 115.4 km
Zakho 120.1 km
Ağrı (Aéroport) 125.4 km
Ağrı 132.0 km
Rabiah 140.6 km
Batman 140.8 km
Dohuk 153.6 km
Erzurum 163.2 km
Qamichli 169.4 km
Tall Afar 175.2 km
Erzurum Aéroport 175.5 km
Hakkari 179.5 km
Bingöl 192.6 km
Kars 192.7 km
Mardin Aéroport 200.4 km
Mossoul 200.9 km
Ardahan 219.9 km
Armavir 223.4 km
Aqra 225.6 km
Iğdır 226.9 km
Artvin 229.5 km
Hassakah 238.9 km
Diyarbakır 239.1 km
Makou 247.2 km
Amasia 253.2 km
Aéroport international Shirak 259.2 km
Hopa 260.3 km
Erbil Aéroport 267.8 km
Yerevan Zvartnots 268.3 km
Batoumi 270.3 km
Akhaltsikhé 271.0 km
Achtarak 271.1 km
Ashotsk 271.3 km
Salahadin 271.5 km
Bogus Soviet 272.4 km
Artachat 273.6 km
Bayburt 274.8 km
Aparan 286.1 km
Rize 291.1 km
Khoy 296.9 km
Koutaïssi Aéroport 304.3 km
Vanadzor 304.7 km
Poti 310.3 km
Tunceli 310.7 km
Koutaïssi 312.9 km
Mta-sabueti 318.0 km
Hrazdan 318.4 km
Ourmia 319.1 km
Baïji 322.7 km
Erzincan 325.8 km
Elâzığ 335.1 km
Zougdidi 337.0 km
Zougdidi 337.0 km
Kirkouk 338.0 km
Anah 342.1 km
Ambrolaouri 343.6 km
Lac Sevan 344.2 km
Bolnissi 347.5 km
Gavar 348.7 km
Trabzon 350.7 km
Nakhitchevan Aéroport 356.1 km
Gümüşhane 356.7 km
Haditha 358.0 km
Chamchamal 369.8 km
Idjevan 370.5 km
Tbilissi 380.8 km
Gap Meydan 388.7 km
Şanlıurfa GAP (Aéroport) 389.0 km
Touz Khormatou 391.1 km
Aéroport Chota-Roustavéli de Tbilissi 391.4 km
Mahabad 404.4 km
Şanlıurfa 409.6 km
Souleimaniye 423.0 km
Sisian 423.6 km
Adıyaman 431.2 km
Maragha 437.6 km
Tabriz Aéroport 444.6 km
Tulga Meydan 451.0 km
Kapan 465.1 km
Malatya/Erhac 468.3 km
Saqqez 476.0 km
Khanaqin 477.3 km
Gandja Aéroport 481.9 km
Giresun 482.4 km
Halabja 483.6 km
Giandscha 491.5 km
Zaqatala 546.2 km
Gounib 604.9 km