This is pushing the envelope on the question but there is a TIS application (not heard last fall when in the area though):
1680 (MIS) WQBV597 City of Sanibel; the News-Press reported on September 15, 2008 that "They're [Sanibel] adding a radio frequency, 1680 AM, that will broadcast important information to Sanibel residents during an emergency." However, not hear in mid-September, 2008 while the editor was on the island. Back in December, 2004, this appeared on FCC dB as pending. January, 2005: listed as 800 Dullop Road, at the Sanibel Causeway Weigh Station.