July 26th, 2009

wget and weather nowcasting

There are rahter nice data from weather radar at chmi.cz. I'd like
to use them to predict "next" picture and ultimately warn me when
storm is closing. Now...

Writing simple predictor should not be that hard, but surely someone
did that before me?

Is there an easy way to find place (by given lat/lon) in the picture?

Are there similar radar pictures available for more countries? (Something is on weather.org, both Poland covering big part of Czech republic and Slovakia covering southeast is available).

Also... I'm currently downloading pictures with
wget -r -l 1
http://www.chmi.cz/meteo/rad/rad_data.php
. Unfortunately, it
keeps downloading pictures it already has over and over and over again
-- with each update, new pictures are linked from the site, but many
pictures are already downloaded. Surely there must be a way to suppress that
behaviour?