World

Asia



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 - Rajapalayam Distance
Palayamkottai 27.8 km
Madurai 61.2 km
Coimbatore/Peelamedu 68.0 km
Thiruvananthapuram Airport 70.7 km
Bangalore 84.8 km
Bangalore / Hindustan 84.9 km
Salem 86.0 km
Ooty 103.1 km
Mysore 118.3 km
Alappuzha 126.2 km
Kochi Airport 129.1 km
Tiruchirappalli Intl. Airport 133.4 km
Arogyavaram 141.9 km
Willingdon 143.5 km
Pamban 185.6 km
Vellore 194.5 km
Kozhikode 202.1 km
Madikeri 216.2 km
Cuddalore 251.9 km
Puttalam 256.0 km
Karaikal 256.2 km
Nagapattinam 257.7 km
Mannar 263.6 km
Colombo 264.2 km
Katunayake 264.3 km
Colombo 265.9 km
Jaffna 274.6 km
Chennai Intl. Airport 302.9 km
Galle 305.6 km
Mangalore/Bajpe 310.8 km
Kurunegala 316.3 km
Anuradhapura Airport 320.0 km
Ratnapura 322.5 km
Maha Illuppallama 325.9 km
Vavuniya 328.7 km
Kandy 346.0 km
Nuwara Eliya 361.7 km
Bandarawela 385.9 km
Badulla 392.8 km
Hambantota 404.5 km
Trincomalee 412.2 km
Batticaloa 463.2 km
Pottuvil 479.4 km
Minicoy / Lakkadiven 490.8 km
Hanimaadhoo 493.7 km