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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.


Weerstations in de buurt - Teheran Afstand
Internationale luchthaven Mehrabad 0.0 km
Teheran Luchthaven 28.8 km
Nowshahr 62.3 km
Nowshahr Airport 69.2 km
Ramsar 114.2 km
Kashan 118.6 km
Qazvin 155.5 km
Babolsar 161.2 km
Gharakhil 171.5 km
Arak 215.1 km
Dasht-e Naz Airport 215.2 km
Rasjt 219.2 km
Isfahan 226.4 km
Semnan 226.5 km
Shahrekord 240.7 km
Bandar-e Anzali 244.9 km
Aligudarz 246.0 km
Esenguly 315.2 km
Hamadan 319.2 km
Zanjan 327.1 km
Zanjan 327.1 km
Ghuchan 334.0 km
Abadeh 341.3 km
Masjedsoleiman 350.6 km
Gorgan 353.1 km
Lənkəran 354.8 km
Khorramabad 373.9 km
Ardebil Luchthaven 376.7 km
Khorramabad Luchthaven 377.7 km
Ardebil 387.9 km
Safi-Abad Dezful 406.7 km
Shahrud 412.9 km
Yazd 424.0 km
Meyaneh 425.9 km
Ahvaz Luchthaven 431.2 km
Khur 434.4 km
Sarab 455.0 km
Kermanshah 482.3 km
Sanandaj 484.9 km
Ahar 517.0 km
Bereket 520.5 km
Maraveh Tappeh 532.5 km
Amarah 543.1 km

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