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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.


Nearby Weather Stations - Vellakoil Απόσταση
Bangalore / Hindustan 48.6 km
Μαντουράι 48.9 km
Μπανγκαλόρ 51.0 km
Palayamkottai 51.8 km
Salem 52.9 km
Coimbatore/Peelamedu 74.3 km
Ανάνταπουρ 90.2 km
Τιρουβανανταπουράμ Αεροδρόμιο 104.0 km
Arogyavaram 105.8 km
Ooty 110.1 km
Tiruchirappalli International Airport 111.4 km
Μαϊσόρ 118.2 km
Κοτσί Αεροδρόμιο 147.6 km
Kadapa 148.1 km
Alappuzha 148.7 km
Willingdon 163.2 km
Chitradurga 165.0 km
Vellore 165.7 km
Pamban 170.9 km
Kozhikode 215.4 km
Madikeri 224.1 km
Cuddalore 228.9 km
Karaikal 235.6 km
Nagapattinam 237.5 km
Puttalam 243.7 km
Mannar 248.4 km
Katunayake 254.3 km
Κολόμπο 255.0 km
Κολόμπο 256.8 km
Τζάφνα 257.5 km
Nellore 263.4 km
Chennai International Airport 278.1 km
Galle 296.9 km
Kurunegala 303.8 km
Ανουρανταπούρα Αεροδρόμιο 305.4 km
Ratnapura 311.6 km
Maha Illuppallama 311.7 km
Βαβουνίγια 313.1 km
Mangalore/Bajpe 319.7 km
Κάντι 333.1 km
Nuwara Eliya 349.1 km
Bandarawela 373.0 km
Honnavar 374.5 km
Badulla 379.5 km
Hambantota 392.5 km
Trincomalee 396.1 km
Karwar 412.2 km
Batticaloa 447.8 km
Pottuvil 464.9 km
Minicoy / Lakkadiven 513.5 km
Hanimaadhoo 519.5 km