As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PBI - STA 5681 - EN ROUTE FROM JAX TO MIA AT CRUISE FLIGHT, THE CAPTAIN'S FWD WINDSHIELD HEAT SHORTED INTERNALLY AND ARCED. SOON AFTER, THE OUTER PANE CRACKED RESEMBLING A SPIDER WEB. CAPTAIN'S VISIBILITY WAS NEAR ZERO. AN EMERGENCY WAS DECLARED AND THE AIRCRAFT DIVERTED TO PBI WITHOUT INCIDENT. C/A - REPLACED CAPT'S FWD W/S.