sferics vs Nexrad

I just watched a storm develop from just light rain to nasty boomer on
the radar (and pass over my house) in seven minutes, which leads me to
wonder whether, had I been relying on Nexrad for strategic weather
avoidance, I might have flown right into it, and whether sferics would
have given me a better heads-up.

Given a choice, and noting that you usually can get a radar loop before
takeoff, which would you prefer installed in your simgle-engine IFR
bugsmasher? (The choice is between sferics and downloaded Nexrad images)
I wonder if sferics is still the better choice, given it's real time,
no subscription, and lightning is reported to precede rain by
significant time.

Jose
--
The monkey turns the crank and thinks he's making the music.
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