"Richard Kaplan" wrote in message
news:1121692774.c01dc1e7a3768ab5fcc211551cdda8b3@t eranews...

I think "Unable routing through SCAPE or other convective weather; please
propose alternative re-route" would be fine.


That's certainly better than "Unable." Note that the controller did not
attempt to issue routing through SCAPE or other convective weather.