[Xastir] radar .geo idea: will it work?

[Dick Repasky]

At http://lwf.ncdc.noaa.gov/oa/radar/radarproducts.html I see two overlays that
I think would be interesting to use with xastir: one that shows locations of
tornadic vortex signatures and another that shows storm tracking information
including storm location, track for last hour and forecast track for the next
hour. These could be useful for positioning spotters during weather nets.

Can I get these by modifying a copy of WMSRadar.geo to point to them?  If so,
where do I find out what the layer names are? I've hunted through the nexrad
website and googled everything I can think of without much luck.

73,

Dick, KC9JLU