Peter R. wrote:
On 9/17/2007 10:54:11 AM, Dave Butler wrote:

Since I'm a user of the XM product, I'd be
interested in knowing whether he was displaying the NEXRAD in the
cockpit, and what it showed.

As a user of WSI's in-cockpit weather, I am under the impression that XM
NEXRAD can be up to 10 to 15 minutes old, depending on refresh rate and time

NEXRAD through XM Radio is usually never more than ten minutes old.
It's impractical to use for tactical avoidance (like you would use
airborn radar or sferics) but you can steer clear of large spots of
orange to red.