Update: (October 3, 2015 - 4:30 p.m. EDT) -- Carnival Glory, which departed Miami today, has canceled tomorrow's visit to Half Moon Cay and will spend the day at sea, bringing the total number of ships affected to 16 from six cruise lines.
Update: (October 3, 2015 - 1:30 a.m. EDT) -- Two Royal Caribbean ships and two more Carnival ships have altered their course to avoid the storm. Bermuda cruises are now affected, as well as the Bahamas. For information about Liberty of the Seas, Enchantment of the Seas, Carnival Sunshine and Carnival Fantasy, see our updated list below.
(1:22 p.m. EDT) -- At least five cruise lines have been affected by Major Hurricane Joaquin.
Crystal Cruises is the latest to make itinerary changes and the first to do so for a ship in Northeast. Carnival, Princess, Norwegian and Disney have rerouted ships scheduled to call at the Bahamas. The storm -- which has sustained wind speeds of 130 miles per hour -- threatens the islands with heavy rain, swells and five- to 10-foot storm surges. It has prompted hurricane warnings and watches, as well as states of emergency across the east coast.
According to the National Hurricane Center, Joaquin will linger near the Bahamas through Friday, before heading north. It is expected to be off the coast of New Jersey Monday night.
Celebrity also has ships in the area but have not made any changes. Silversea and Crystal are scheduled to be in New York Monday. We will continue to keep you updated if more cruises are affected.
Below is the most up-to-date list of itinerary changes.
Want to learn more about cruising during hurricane season? We break down the pros and cons.
Carnival Pride: Pride's September 30 itinerary from Baltimore will replace its October 1 call at Half Moon Cay with a sea day.
Carnival Valor: Valor's September 26 cruise from Port Canaveral will miss Grand Turk on October 1 and instead spend a day at sea.
Carnival Conquest: The ship's September 26 itinerary will replace Grand Turk on October 2 with a sea day.
Carnival Sensation: Carnival Sensation's three-night Bahamas cruise -- which departed October 1 -- will visit Freeport instead of Nassau on October 2.
Carnival Sunshine: Carnival Sunshine departed Port Canaveral on Friday and switched its eight-night Bermuda cruise to the Eastern Caribbean. The ship will now visit San Juan, St. Thomas and Grand Turk. Carnival said passengers would receive a 25 percent discount on a future cruise and a refund of the port charges and taxes for Bermuda.
Carnival Fantasy: The October 1 departure of Carnival Fantasy from Charleston has replaced its October 3 call at Freeport with Key West.
Carnival Glory: Carnival Glory, which departed Miami on October 3, has canceled its October 4 visit to Half Moon Cay and will spend the day at sea.
Norwegian Getaway: On October 2, Norwegian Getaway will skip Nassau for a sea day before returning to Miami Saturday morning.
Norwegian Sky: Norwegian Sky will not call in Great Stirrup Cay. Instead, the ship will remain at sea on Saturday and call in Nassau on Sunday morning.
Royal Princess: Royal Princess will skip the line's private island on September 30 and October 2.
Disney Magic: Disney Magic has been forced to skip its scheduled visits to Castaway Cay and Nassau. The ship's new itinerary is Key West on October 1, Cozumel on October 2 and a sea day on October 3.
Disney Dream: Disney Dream will replace its October 2 call at Nassau with a sea day. As of now, it will visit Castaway Cay on October 3 as scheduled.
Disney Fantasy: Disney Dream -- which is approaching the end of a weeklong Eastern Caribbean cruise -- will skip Castaway Cay on October 2 before returning to Port Canaveral on Saturday.
Crystal Symphony: The ship has canceled its Bar Harbor call, scheduled for October 2. It will arrive in New York October 3 (a day earlier than scheduled), giving passengers more time in the city.
Liberty of the Seas: The Royal Caribbean ship will head to St. John, Canada on Saturday instead of King Wharf, Bermuda.
Enchantment of the Seas: Instead of calling at Nassau on Saturday, Enchantment of the Seas will sail to Freeport.
--By Gina Kramer, Associate Editor; updated by Louise Goldsbury, Australia Editor