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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 - Pacode Distância
Tiruvanantapura Aeroporto 30.0 km
Palayamkottai 60.2 km
Coimbatore/Peelamedu 69.8 km
Udhagamandalam 94.2 km
Alappuzha 94.4 km
Cochim Aeroporto 102.0 km
Madurai 104.1 km
Willingdon 113.7 km
Maiçor 115.4 km
Bangalor 120.0 km
Bangalore / Hindustan 122.6 km
Salem 132.0 km
Tiruchirappalli Intl. Airport 176.4 km
Calecute 176.8 km
Madikeri 196.5 km
Pamban 223.7 km
Vellore 239.2 km
Mangalore/Bajpe 287.4 km
Putalão 291.4 km
Cuddalore 293.9 km
Karaikal 296.9 km
Colombo 297.2 km
Katunayake 297.9 km
Negapatão 298.0 km
Colombo 298.7 km
Mannar 300.9 km
Jafanapatão 313.0 km
Galle 337.6 km
Kurunegala 351.1 km
Ratnapura 356.1 km
Anuradapura Aeroporto 356.2 km
Maha Illuppallama 361.8 km
Vavuniya 365.6 km
Cândia 380.9 km
Nuwara Eliya 396.2 km
Bandarawela 420.4 km
Aeroporto Internacional Ibrahim Nasir 425.8 km
Badulla 427.6 km
Hambantota 438.3 km
Triquinimale 449.0 km
Minicoy / Lakkadiven 452.7 km
Hanimaadhoo 453.0 km
Baticaloa 499.2 km
Pottuvil 514.7 km