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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.


Nächste Wetterstation - Tiruchirappalli Abstand
Tiruchirapalli Flughafen 0.0 km
Pamban 64.0 km
Salem 64.3 km
Arogyavaram 65.4 km
Vellore 66.6 km
Madurai 72.5 km
Kadapa 81.6 km
Palayamkottai 117.1 km
Cuddalore 118.7 km
Karaikal 124.3 km
Nagapattinam 126.2 km
Bangalore / Hindustan 127.4 km
Bengaluru 135.8 km
Puttalam 136.6 km
Mannar 138.5 km
Jaffna 146.5 km
Katunayake 149.6 km
Colombo 151.3 km
Anantapur 151.6 km
Colombo 153.3 km
Nellore 160.0 km
Chennai Flughafen 169.5 km
Coimbatore/Peelamedu 185.6 km
Galle 192.6 km
Kurunegala 195.3 km
Anuradhapura Flughafen 195.5 km
Maha Illuppallama 201.9 km
Vavuniya 202.6 km
Thiruvananthapuram Flughafen 203.8 km
Ratnapura 204.6 km
Udagamandalam 221.3 km
Kandy 224.0 km
Mysuru 227.4 km
Nuwara Eliya 240.2 km
Alappuzha 257.7 km
Kochi Flughafen 258.1 km
Bandarawela 263.7 km
Chitradurga 267.3 km
Badulla 269.9 km
Willingdon 273.4 km
Hambantota 283.6 km
Trincomalee 285.1 km
Kozhikode 326.8 km
Madikeri 334.5 km
Batticaloa 337.0 km
Pottuvil 354.4 km
Mangalore/Bajpe 430.1 km
Honnavar 483.4 km
Karwar 520.6 km

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