From the ARRL , the latest list of frequencies in use for Hurricane Matthew

International SATERN Net: 14.265 MHz (USB) Health & Welfare Traffic

Hurricane Watch Net (HWN): 14.325 MHz (USB), 7.268 MHz (LSB): Weather data and storm reports from stations in affected area

Cuba (Primary): 7.110 MHz (LSB)

Cuba (Alternate 1): 7.120 MHz (LSB)

Cuba (Alternate 2): 7.045 MHz

Cuba (Alternate 3): 7.080 MHz

Cuba: 3.720 MHz

Cuba: 3.740 MHz

IARU Region 2: 3.750 MHz Emergency Center of Activity Frequency

IARU Region 2: 7.060 MHz Emergency Center of Activity Frequency

IARU Region 2: 14.300 MHz Global Emergency Center of Activity Frequency

IARU Region 2: 18.160 MHz Global Emergency Center of Activity Frequency

IARU Region 2: 21.360 MHz Global Emergency Center of Activity Frequency

IARU Region 2: 18.160 MHz Global Emergency Center of Activity Frequency

VoIP Hurricane Net: WX-Talk Conference, Node #7203 on Echolink and IRLP Reflector 9219. IRLP Reflector 9553 is the backup. (Due to the number of limited routes to the Echolink node for mobile devices, monitor WX-TALK on a desktop computer if possible.)

http://www.arrl.org/news/frequencies-in-use-in-conjunction-with-hurricane-matthew-response