If Clay ARES is activated for Hurricane Matthew (or any activation), be sure to have plenty of ICS-213 Forms and ICS-213 Shelter Survey Forms available. Also, there is a list of EC / AEC contact information here.
Also, here are some HF Frequencies to monitor:
14.325 / 7.268 – Hurricane Watch Net
14.265 – SATERN
14.300 – Maritime Mobile Service Net