I don't do code so I'm hoping someone who does will take up the challenge.
There's a lot of weather gadgets posted on the site and pretty much all do the same thing, give you a forecast and a "stick your head out the window" current conditions weather. Living in Florida I prefer to see the current radar to just about anything else.
Will Rose's weather suite widget includes a pretty handy radar but no zoom function. I've been using a couple of konfab widgets that provide local radar and some type of zoom. One is the Wunder Radar widget and another to pulls/scrapes from Television station radar images. They're both very useful but based on dated technology (and require the yahoo widget engine)
There are a couple different options out there now that are only available from dedicated sites like Weather.com's new interactive radar map which works with MS's Virtual Earth. NEXRAD Level III viewers and NWS RIDGE overlays are other next generation systems.
ANYWAY.......what I think would be doable and an excellent widget/gadget is one that uses the RIDGE data, freely available from the National Weather Service. The images come in layers to make a composite image and the NWS has plenty of info available at
WWW Link as to how it works.
The Yahoo widget developers are pretty much kicking butt when it comes to these kinda things and I'd like to see the DX developers get to this one first (plus I hate running the yahoo widget engine).