PHOTO: Five-day forecast for Hurricane Humberto. (Photo courtesy of National Hurricane Center)Hurricane Humberto, which has developed over the weekend from a Tropical Storm into a full-blown, Category-1 hurricane, is making its way toward Bermuda, forcing cruise lines operating in the region to reroute their ships.

According to CruiseCritic, Humberto has thus far affected two Carnival Cruise Line itineraries that were scheduled to be sailing in Bermuda between Wednesday, September 18, and Friday, September 20.

Carnival Pride, which left Baltimore on September 15, is now spending two days at sea before sailing on to visit Grand Turk and the Dominican Republic’s Amber Cove, rather than Bermuda, as was originally intended.

Carnival Sunrise, departing today from New York City, will stop in Charleston, South Carolina, on September 18 before spending a previously-unscheduled day at sea. Sunrise will then spend a single day in Bermuda on Friday, September 20, by which time the storm is expected to have moved on, before cruising back to New York by September 22.

Royal Caribbean’s Grandeur of the Seas is also scheduled to weigh anchor in Bermuda on September 21, after Humberto is forecast to have already moved away from the island.

While no warnings are currently in effect, the National Hurricane Center anticipates the need to a Tropical Storm Watch for Bermuda later this afternoon, as Humberto continues to gain strength and move east-northeast over the next two days or so.

With sustained wind speeds of 85 mph, the hurricane was this morning sitting about 710 miles outside of Bermuda but is expected to reach the north end of the island by Wednesday night. Humberto is expected to peak as a major hurricane within the next 36-48 hours, with forwarding speed intensifying through Thursday, September 19.

Other effects of the storm include large swells, which will affect portions of the northwestern Bahamas and the southeastern U.S. during the upcoming few days. People in those areas should be aware of dangerous surf conditions and potentially life-threatening rip currents.