Dorian Still Battering Grand Bahama Island; Northwestward Movement Expected Today

Dorian has weakened to a category 3 hurricane with 120 mph winds and higher gusts. Even though Dorian is no longer a category 5, it is still a powerful and dangerous hurricane. Hurricane force winds extend out 45 miles from the center and tropical storm winds extend out 160 miles.After a day sitting over Grand Bahama Island, Dorian is expected to make its northwestward turn today and begin moving. A trough heading to the east coast will steer Dorian to the north, paralleling Florida’s east coast. There is the potential for the Dorian to not make landfall in the lower 48, but there will still be storm surge along the east coast of Florida, Georgia, and the Carolinas.

Even though the current track keeps the eye and therefore strongest winds offshore, the east coast will be impacted by storm surge and big waves. Beach erosion and coastal flooding is expected, much like the conditions the east coast saw when Matthew passed by the state. Some tropical storm force wind gusts are possible in eastern Polk and Highlands counties. Tampa will see breezy conditions today with scattered showers and storms.

We are in the peak of hurricane season and monitoring other areas in the tropics. We will likely see potential tropical cyclone 7, which is sitting in the southwestern Gulf become a Tropical Storm by tonight. It currently has 35 mph winds and is expected to bring 6-12″ of rain to parts of Mexico.

The trough of low pressure well east of Dorian could become a tropical depression by Thursday as it heads northward. After that, conditions are less favorable for development. Interests in Bermuda should monitor its progress. The area in red is another tropical wave likely to become a tropical depression later today. It will head northwest in the tropical Atlantic. Another wave (in orange) is forecast to emerge off the coast of Africa and could develop into a tropical depression late this week or weekend. It will move west to west-northwestward.

Dorian Stationary Over Grand Bahama; Move To The North Begins Tonight

At 5pm Monday, Dorian was located about 105 miles east of West Palm Beach, and sitting stationary over the Island of Grand Bahama. Complete storm surge inundation continues for most of that island, along with max sustained winds of up to 145 mph.

A motion to the north-northwest will begin tonight into tomorrow morning. Confidence continues to increase that the center of the storm will stay off of Florida’s east coast. However, that does not mean there won’t be impacts. Hurricane-force wind gusts will still be possible along the coast, especially north of the Treasure Coast, even if the storm stays 50 miles offshore.

In addition, several feet of storm surge will be likely in many areas Tuesday afternoon through the day on Wednesday as strong onshore flow pushes water onshore as the storm passes.

Dorian will no longer be a problem for Florida by Thursday. However, folks along the coast of Georgia, South Carolina, and North Carolina need to be monitoring the progress of the storm very closely the rest of the week, as significant impacts will be possible if it hugs the coast. Dorian will be safely out to sea by the weekend.