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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.


Estações Meteorológicas Próximas - Tatvan Distância
Siirt 60.9 km
Muş Aeroporto 74.4 km
Muş 89.6 km
115.4 km
Zakho 120.1 km
Ağrı Aeroporto 125.4 km
Ağrı 132.0 km
Rabiah 140.6 km
Batman 140.8 km
Dohuk 153.6 km
Erzurum 163.2 km
Al-Qamishli 169.4 km
Tal Afar 175.2 km
Erzurum Aeroporto 175.5 km
Hakkâri 179.5 km
Bingöl 192.6 km
Cars 192.7 km
Mardin Aeroporto 200.4 km
Mossul 200.9 km
Ardaã 219.9 km
Armavir 223.4 km
Akre 225.6 km
Iğdır 226.9 km
Artvin 229.5 km
Hassakah 238.9 km
Diarbaquir 239.1 km
Maku 247.2 km
Amasia 253.2 km
Aeroporto Internacional de Shirak 259.2 km
Hopa 260.3 km
Arbil Aeroporto 267.8 km
Yerevan Zvartnots 268.3 km
Batumi 270.3 km
Akhaltsikhe 271.0 km
Ashtarak 271.1 km
Ashotsk 271.3 km
Salahadin 271.5 km
Bogus Soviet 272.4 km
Artaxata 273.6 km
Bayburt 274.8 km
Aparan 286.1 km
Rize 291.1 km
Coi 296.9 km
Kutaisi Aeroporto 304.3 km
Vanadzor 304.7 km
Poti 310.3 km
Tunceli 310.7 km
Kutaisi 312.9 km
Mta-sabueti 318.0 km
Hrazdan 318.4 km
Úrmia 319.1 km
Baiji 322.7 km
Erzincã 325.8 km
Elazığ 335.1 km
Zugdidi 337.0 km
Zugdidi 337.0 km
Quircuque 338.0 km
Anah 342.1 km
Ambrolauri 343.6 km
Lago Sevan 344.2 km
Bolnisi 347.5 km
Gavar 348.7 km
Trebizonda 350.7 km
Naquichevão Aeroporto 356.1 km
Gümüşhane 356.7 km
Hadita 358.0 km
Chamchamal 369.8 km
Ijevan 370.5 km
Tiblíssi 380.8 km
Gap Meydan 388.7 km
Şanlıurfa GAP Airport 389.0 km
Tuz Khurmatu 391.1 km
Aeroporto Internacional de Tiblíssi 391.4 km
Mahabad 404.4 km
Şanlıurfa 409.6 km
Suleimânia 423.0 km
Sisian 423.6 km
Adıyaman 431.2 km
Maragha 437.6 km
Tabriz Aeroporto 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
Ganja Aeroporto 481.9 km
Giresun 482.4 km
Halabja 483.6 km
Giandscha 491.5 km
Zaqatala 546.2 km
Gunibe 604.9 km