We launched our pax OT for ATL. Hovering near by – menacing TS Jeanne. Enroute the Wx deteriorated with winds setting up for an 80 degree crosswind the strength of which exceeded aircraft design certification limitations. Electing not to put man and machine in harms way we diverted to Knoxville TN to wait it out. Given the difficult circumstances of the extended ordeal and even after a false re-start and return to the gate, everyone remained patient. Seven hours delayed we arrived in ATL. Same day service.