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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 - Thiruvarur Distance
Karaikal 20.6 km
Nagapattinam 22.3 km
Cuddalore 23.8 km
Mannar 46.1 km
Jaffna 46.3 km
Pamban 57.0 km
Puttalam 57.9 km
Vellore 71.0 km
Chennai Intl. Airport 73.6 km
Katunayake 75.8 km
Colombo 80.3 km
Nellore 81.4 km
Colombo 82.3 km
Anuradhapura Airport 97.4 km
Kurunegala 102.1 km
Vavuniya 102.2 km
Tiruchirappalli Intl. Airport 103.9 km
Maha Illuppallama 104.2 km
Galle 111.6 km
Ratnapura 114.7 km
Kadapa 119.2 km
Kandy 127.5 km
Arogyavaram 140.7 km
Nuwara Eliya 143.6 km
Bandarawela 165.6 km
Salem 166.2 km
Badulla 171.0 km
Madurai 174.9 km
Trincomalee 182.6 km
Hambantota 186.2 km
Palayamkottai 216.1 km
Bangalore / Hindustan 226.8 km
Batticaloa 234.7 km
Bangalore 235.0 km
Anantapur 242.0 km
Pottuvil 252.7 km
Coimbatore/Peelamedu 289.5 km
Thiruvananthapuram Airport 304.9 km
Ooty 325.0 km
Mysore 330.2 km
Alappuzha 361.0 km
Kochi Airport 361.9 km
Chitradurga 366.7 km
Willingdon 377.1 km
Kozhikode 430.6 km
Madikeri 437.7 km