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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.


Nearby Weather Stations - Thanjavur Απόσταση
Pamban 31.5 km
Vellore 45.4 km
Tiruchirappalli International Airport 48.2 km
Cuddalore 71.7 km
Karaikal 76.1 km
Nagapattinam 77.9 km
Kadapa 86.8 km
Mannar 92.5 km
Puttalam 93.9 km
Arogyavaram 94.0 km
Τζάφνα 99.0 km
Katunayake 109.2 km
Salem 111.2 km
Κολόμπο 111.9 km
Κολόμπο 114.0 km
Nellore 119.0 km
Μαντουράι 119.3 km
Chennai International Airport 123.5 km
Ανουρανταπούρα Αεροδρόμιο 148.8 km
Kurunegala 150.2 km
Galle 151.4 km
Βαβουνίγια 155.3 km
Maha Illuppallama 155.4 km
Ratnapura 160.6 km
Palayamkottai 162.2 km
Bangalore / Hindustan 172.7 km
Κάντι 178.0 km
Μπανγκαλόρ 181.3 km
Ανάνταπουρ 192.0 km
Nuwara Eliya 194.3 km
Bandarawela 217.4 km
Badulla 223.3 km
Coimbatore/Peelamedu 233.9 km
Trincomalee 237.3 km
Hambantota 237.6 km
Τιρουβανανταπουράμ Αεροδρόμιο 250.4 km
Ooty 269.4 km
Μαϊσόρ 275.1 km
Batticaloa 289.3 km
Alappuzha 305.6 km
Κοτσί Αεροδρόμιο 306.2 km
Pottuvil 306.9 km
Chitradurga 313.2 km
Willingdon 321.5 km
Kozhikode 375.0 km
Madikeri 382.4 km