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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.


Poblíž povětrnostní stanice - Uthiramerur Vzdálenost
Cuddalore 16.5 km
Karaikal 34.0 km
Nákappattinam 37.3 km
Nellúru 43.5 km
Letiště Čennaí 47.0 km
Jápané 64.0 km
Ongole 65.9 km
Vélúr 68.9 km
Mannar 72.9 km
Rentachintala 82.8 km
Puttalam 90.3 km
Pamban 91.0 km
Anuradhápura Letiště 109.1 km
Vavuniya 109.8 km
Kadapa 110.9 km
Maha Illuppallama 115.7 km
Tiruchirappalli Intl. Airport 122.9 km
Vijayawada (Letiště) 136.4 km
Arogyavaram 142.4 km
Mačilípatnam 167.6 km
Sélam 179.3 km
Trincomalee 180.7 km
Madurai 195.4 km
Kurnool 201.2 km
Bangalore / Hindustan 234.3 km
Palayamkottai 239.5 km
Bengalúr 243.2 km
Anantapur 243.6 km
Raichur 282.5 km
Kakinada 284.7 km
Coimbatore/Peelamedu 304.4 km
Tiruvanantapuram Letiště 326.7 km
Ballari 329.7 km
Óttakamandu 338.7 km
Maisúr 341.4 km
Chitradurga 372.9 km
Kóčin Letiště 378.7 km
Alappuzha 379.3 km
Willingdon 394.3 km
Kóžikkót 444.5 km
Madikeri 449.0 km
Bídžápur 461.4 km
Gadag-Betageri 464.8 km