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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 - Tiruvalla Distance
Alappuzha 17.3 km
Cochin Aéroport 27.1 km
Willingdon 36.5 km
Thiruvananthapuram Aéroport 48.5 km
Ooty 55.1 km
Coïmbatore/Peelamedu 68.2 km
Mysore 76.5 km
Kozhikode 100.3 km
Madikeri 123.0 km
Palayamkottai 132.7 km
Bangalore 144.1 km
Bangalore / Hindustan 150.7 km
Madurai 170.3 km
Salem 186.4 km
Mangalore/Bajpe 210.9 km
Arogyavaram 237.1 km
Trichy (Aéroport) 241.6 km
Pamban 295.0 km
Vellore 299.1 km
Cuddalore 360.3 km
Puttalam 364.9 km
Karikal 365.3 km
Nagapattinam 366.8 km
Colombo 372.1 km
Katunayake 372.6 km
Mannar 373.0 km
Colombo 373.7 km
Minicoy/Lakkadiven 381.6 km
Jaffna 384.1 km
Hanimaadhoo 386.1 km
Madras (Aéroport) 410.5 km
Galle 413.0 km
Kurunegala 425.1 km
Anurâdhapura Aéroport 429.2 km
Îles Amindivi 429.7 km
Ratnapura 430.8 km
Maha Illuppallama 435.0 km
Vavuniya 438.1 km
Kandy 454.9 km
Nuwara Eliya 470.4 km
Bandarawela 494.6 km