Emergency Management 

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Hurricane Season

The Atlantic hurricane season runs from June 1st to November 30th, The Atlantic basin includes the Atlantic Ocean, Caribbean Sea, and Gulf of Mexico.

Tropical cyclone: A rotating, organized system of clouds and thunderstorms that originates over tropical or subtropical waters and has a closed low-level circulation. Tropical cyclones rotate counterclockwise in the Northern Hemisphere. They are classified as follows:

  • Tropical Depression: A tropical cyclone with maximum sustained winds of 38 mph (33 knots) or less.
  • Tropical Storm: A tropical cyclone with maximum sustained winds of 39 to 73 mph (34 to 63 knots).
  • Hurricane: A tropical cyclone with maximum sustained winds of 74 mph (64 knots) or higher. In the western North Pacific, hurricanes are called typhoons; similar storms in the Indian Ocean and South Pacific Ocean are called cyclones.

Major Hurricane: A tropical cyclone with maximum sustained winds of 111 mph (96 knots) or higher, corresponding to a Category 3, 4 or 5 on the Saffir-Simpson Hurricane Wind Scale.

Hurricane Links:

Official Nantucket Info Sources

Other Helpful Sources

  1. Emergency Management

    Physical Address
    4 Fairgrounds Road
    Nantucket, MA 02554

    Phone: 508-228-1212
    Fax: 508-228-7246
    Emergency: 911

    William Pittman,
    Chief of Police - Emergency Management Director

    Brendan Coakley
    Emergency Management Coordinator



The Town of Nantucket has adopted the ping4alerts! app enabling it to send alerts to residents and visitors regarding emergencies or advisories. Ping4alerts! is a free app that must be downloaded from your devices app store and requires no registration or personal information from users. 

Alerts can be sent to mobile network devices in small or larger geographic areas. These alerts may contain text, media, maps, links and other pertinent information. 

Ping4 Inc. is partnered with and recommended by the Massachusetts Emergency Management Agency (MEMA). MEMA’s director explains ping4alerts! features and benefits here

Emergency Broadcast Sources

  • WNPD 105.5 FM - Nantucket Emergency Broadcast
  • WACK 97.7 FM - True Island Radio
  • NCTV18 - Nantucket Community Television
  • NOAA Weather Live Online
  • USCG Marine Broadcasts, VHF Channel 16 and 22a

Outdoor Warning Sirens