World

India



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 - Tiruvannamalai Distance
Vellore 17.4 km
Tiruchirappalli Intl. Airport 49.8 km
Kadapa 54.9 km
Pamban 63.7 km
Arogyavaram 69.2 km
Cuddalore 78.5 km
Karaikal 89.4 km
Nagapattinam 92.1 km
Salem 101.0 km
Rentachintala 104.7 km
Nellore 111.6 km
Mannar 115.1 km
Jaffna 117.8 km
Madurai 120.4 km
Puttalam 120.6 km
Chennai Intl. Airport 125.3 km
Ongole 128.6 km
Kurnool 136.5 km
Bangalore / Hindustan 157.1 km
Palayamkottai 165.9 km
Bangalore 166.0 km
Anuradhapura Airport 168.8 km
Anantapur 170.6 km
Vavuniya 173.6 km
Maha Illuppallama 175.6 km
Vijayawada Airport 210.0 km
Raichur 213.6 km
Coimbatore/Peelamedu 226.1 km
Machilipatnam 244.0 km
Thiruvananthapuram Airport 250.8 km
Trincomalee 252.6 km
Ballari 255.9 km
Ooty 260.4 km
Mysore 263.5 km
Chitradurga 296.9 km
Kochi Airport 300.6 km
Alappuzha 301.6 km
Willingdon 316.3 km
Kakinada 362.5 km
Kozhikode 366.2 km
Madikeri 371.1 km
Bijapur 389.0 km
Gadag-Betageri 389.9 km