[iang77]

Boarded our C-130J at Biloxi, MS expecting a pretty standard cruise at FL230 to the ASHA base at Miami International. About 45 nm out from KMIA, the aircraft suddenly entered a violent spin and was rapidly losing altitude. I took command of the aircraft and disabled the autopilot immediately. Finally regained control of aircraft at 6,000 feet and declared emergency to ATC. My first officer requested vectors to the nearest airport (KIMM Immokalee Regl) where we arrived visual 27. Paramedics were waiting upon arrival at the ramp. Everyone escaped with minor bumps and bruises, except for the second officer who hit his head pretty hard on the console. Notified ASHA Wing Commander Roger Dean and maintenance crews at the Miami base. Awaiting their arrival here in the Everglades.

Sounds like an FS weather glitch to me. Thoughts, anyone?