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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 - Viluppuram Distance
Cuddalore 31.7 km
Vellore 42.3 km
Karikal 43.9 km
Nagapattinam 47.0 km
Pamban 62.1 km
Jaffna 74.6 km
Nellore 74.8 km
Mannar 76.0 km
Madras (Aéroport) 80.7 km
Puttalam 87.1 km
Trichy (Aéroport) 88.8 km
Kadapa 89.9 km
Ongole 95.6 km
Katunayake 104.9 km
Arogyavaram 114.6 km
Anurâdhapura Aéroport 125.2 km
Vavuniya 128.8 km
Kurunegala 131.2 km
Maha Illuppallama 132.1 km
Salem 146.7 km
Kandy 155.5 km
Madurai 161.2 km
Kurnool 178.5 km
Bangalore / Hindustan 203.9 km
Palayamkottai 205.3 km
Trinquemalay 206.2 km
Bangalore 212.7 km
Anantapur 216.4 km
Batticaloa 258.3 km
Coïmbatore/Peelamedu 271.6 km
Thiruvananthapuram Aéroport 292.6 km
Bellary 302.1 km
Ooty 306.4 km
Mysore 310.0 km
Chitradurga 343.6 km
Cochin Aéroport 345.5 km
Alappuzha 345.8 km
Willingdon 361.0 km
Kozhikode 412.2 km
Madikeri 417.6 km
Gadag-Betageri 436.5 km