Dorian Stronger Today; Will Reach Bahamas Friday

Figure 1. Latest forecast track for Dorian from the National Hurricane Center.

Tropical Storm Dorian is stronger than it was this time yesterday.

2 PM AST advisory info

As of the 2 PM AST, Dorian had winds of 60 mph and a minimum central pressure of 1002 millibars. Movement was to the west-northwest at 14 mph.

Analysis

There has been some improvement in organization. Some outflow is now established – something that had been essentially non-existent. However, dry is still keeping strength in check.

Track

Model guidance is in excellent agreement on Dorian continuing west-northwest through tomorrow, followed by a turn to the northwest Wednesday (see figure 2).

Figure 2. 12z track guidance for Dorian. Image: RAL/NCAR

Dorian is forecast to track near Puerto Rico late Wednesday/early Thursday, and near/over Hispaniola Thursday. By Friday, Dorian will reach the Bahamas.

Intensity

Current thinking is that steady intensification will continue over the next 48 hours, and that Dorian should become a hurricane tomorrow.

Intensity becomes a big question beyond Thursday, though. This is because of possible interaction with Hispaniola.

If Dorian tracks directly over Hispaniola (as is currently forecast), significant weakening is probable, with restrengthening in the Bahamas. Conversely, if Dorian goes north of Hispaniola, we could be looking at a bonafide tropical cyclone (TC) moving into the Bahamas.

Another possible outcome is that Dorian opens up back into a wave after passing over Hispaniola (should it do so), with possible regeneration in the Bahamas.

NOTE: It is too early to say what impact, if any, Dorian will have on Florida or the Southeast U.S.

Caleb Carmichael
Caleb Carmichael

Caleb is the owner of Gulf Coast Storm Center. He is currently an undergraduate student at Mississippi State University majoring in geoscience with a concentration in broadcast and operational meteorology. While not yet a meteorologist, Caleb has been providing weather updates, news, and analysis for the Gulf Coast since 2014.

Articles: 884