As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WE HEARD A LOUD SQUEALING NOISE THAT TURNED INTO A HUMMING RUBBING NOISE THAT TURNED INTO A LOUD FLAPPING SOUND THAT SLOWED DOWN WITH THE DECELERATION OF THE NOSE TIRE. DECLARED EMERGENCY AND DIVERTED TO CLT. MX INSPECTED MLG & NLG TIRE WEAR AND TEAR & WHEEL AND TIRE ASSEMBLY IAW CRJ 700 AMM NO DEFECTS NOTED AT THIS TIME.