Emergency Frequencies to note and monitor:

156.800 MHz - Ch.16 Marine Band International Calling and Distress Frequency.
121.500 MHz - Aircraft Distress, Emergency Locator Transmitter (ELT).
243.000 Mhz - Military Air Distress Frequency
27.065 MHz - CB (Citizen Band Radio) Channel 9 Emergency Channel.

146.520 Mhz - 2 Meter Amateur Radio - National VHF Calling Frequency, used for Emergencies.

462.5625 MHZ - FRS (Family Radio Service), Channel.1 (unofficial) Calling and distress Channel.
462.6750 MHz - GMRS unofficial Emergency Distress Frequency.

446.000 MHz - Amateur Radio UHF Calling Frequency

2182 Khz/USB - Maritime International Calling & Distress Frequency.
45.3600 MHz Statewide Civil Defense, MEMA, Ch.1
45.3200 MHz Statewide Civil Defense, MEMA, Ch.2 [ MEMA ]
52.525 MHz - 6 Meter Amateur Radio (FM)

47.420 Mhz /FM- American Red Cross

155.955 MHz MEMA All Statewide (100 CTCSS)
153.965 MHz MEMA Area 1 (203.5 CTCSS)
154.085 MHZ MEMA Area 2 (210.7 CTCSS)
155.085 MHz MEMA Area 3 (162.2 CTCSS)
155.0850 MHz Area 4 Western Mass
406.00 Mhz - (406.025, 406.028, 406.037) UHF Beacon Frequency for EPIRBS, newer ELT's and PLB's. EPIRB-Emergency Position Indicating Radiobeacon, ELT-Emergency Locator Transmitter,
PLB-Personal Locator Beacons