Over the last few months, I have been using an excellent Mode S Radar
receiver.

http://www.kinetic-avionics.co.uk/index.php

I have posted an image of the radar just a few minutes ago as received from
Guildford, but I'll take it away later as I'm not sure of the legality of
this - but it gives a flavour of what you can see.

http://www.layton.me.uk/image1.jpg

As for met use - well ascertaining cloud base of course!

Phil

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www.layton.me.uk/meteo.htm