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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 - Medã Distância
Medã Aeroporto 0.0 km
Port of Belawan 4.3 km
Sibolga Airport 40.9 km
Phuket 78.0 km
Ko Lanta 79.3 km
Gunung Sitoli/Binaka Airport 121.3 km
Trang 125.2 km
Langkawi Intl. Airport 126.8 km
Satun 165.5 km
Lhokseumawe Aeroporto 167.1 km
Penang Intl. Airport 179.1 km
Phatthalung 180.5 km
Butterworth Airport 193.3 km
Sultan Abdul Halim Airport 196.9 km
Sa Dao 201.4 km
Padangue Aeroporto 202.7 km
Hat Yai Intl. Airport 204.3 km
Kho Hong Agromet 212.2 km
Songkhla 223.8 km
Sitiawan / Pangkor Airport 224.8 km
Sultan Azlan Shah Airport 268.8 km
Pattani Airport 281.3 km
Meulaboh Aeroporto 285.9 km
Yala 293.8 km
Yala 293.8 km
Pekanbaru Aeroporto 313.7 km
Aeroporto Internacional de Cuala Lumpur 319.2 km
Sepang/kl International 337.7 km
Narathiwat 353.2 km
Banda Airport 364.6 km
Sabang Aeroporto 376.0 km
Malaca Aeroporto 397.9 km
Kota Bharu Aeroporto 404.1 km
Rengat Airport 411.9 km