Tropical Storm Dorian gaining strength as it heads for Puerto Rico

FEMA officials said that even though the power grid in the American territory is still fragile after Hurricane Maria devastated the island in 2017, they are far better prepared this time around.
3:31 | 08/28/19

Coming up in the next {{countdown}} {{countdownlbl}}

Coming up next:

{{nextVideo.title}}

{{nextVideo.description}}

Skip to this video now

Now Playing:

{{currentVideo.title}}

Comments
Related Extras
Related Videos
Video Transcript
Transcript for Tropical Storm Dorian gaining strength as it heads for Puerto Rico
Good evening and it's great to have you with us here on a Tuesday night. And we begin tonight with the state of emergency already in Puerto Rico. Tropical storm Dorian gaining strength at this hour and Florida watching this path very closely, too. The track shows Dorian with winds up to 50 miles per hour, nearing hurricane strength as it makes landfall in Puerto Rico tomorrow. Dorian hitting martinique today. Streets flooded by heavy rains already. Hurricane hunters flying into the storm for a closer look tonight. Tonight, concerns about the power grid and the preparations in Florida, too, the path, the strength still uncertain, but taking no chances. We have the new track, and ABC's Victor Oquendo is in Puerto Rico, leading us off. Reporter: Tonight, final preparations are under way in Puerto Rico. Officials warning residents Dorian heading straight toward the island. Hurricane Maria fresh in the minds of the millions of American citizens who live here. The strong category 4 storm made landfall nearly two years ago, packing 155-mile-per-hour winds, killing nearly 3,000 people. The storm knocking out power to much of the island for months. And no matter how strong Dorian is, the power grid -- it's at risk here? It is. It's fragile and everyone knows that. Reporter: Flying over the island today, we could still see blue tarps covering many roofs. We're in sort Puerto Rico right in Dorian's path. We're told there are 26,000 homes just like this one with a blue tarp acting as a roof. We were invited inside one of those homes. And if you come this way, you'll see what it looks like now. Take a look there. When it rains what does it look like? Coming a lot of water. A lot of water comes in here. Reporter: FEMA saying they're much better prepared than 2017, stocking five warehouses around the island, like this one we saw in 2018, with vital supplies at the ready. In Florida, after record-breaking rainfall this summer, officials now testing water pumps and emptying canals. Residents across the state are sandbag, bracing for a possible hit labor day weekend. Thinking about everyone in Puerto Rico tonight and the path afterward. Victor Oquendo live in Puerto Rico. And we know officials are concerned about the power grid, which you reported on there, but the potential for major flash flooding here. Reporter: That's right, David. And we're feeling one of Dorian's outer bands as we speak. Up to eight inches of rain and life-threatening flash flooding possible, along with tropical storm force winds and rough surf. David? Victor, thank you. Let's get to ginger zee with the newest track. Ginger, good evening. Reporter: David, good 24 hours from now, we'll be talking about a potential landfall. I'll take you right to that four to eight inches 0 rain is the main threat. Gusts up to 65 miles per hour. Let's get closer in, because Dorian could actually be ripped apart a bit by that high Tur rain of Puerto Rico. Remember, that is not a flat eye land. So, it will take a little while to restrengthen. Now, watch that red line to red line. The whole cone that includes parts of the Bahamas and eventually by Sunday, anywhere between Melbourne and Jacksonville in that center line right now. But Savannah to Miami on the lookout. Dry air, it has been fighting through that, also some wind shear, but that's going to become more favorable and actually better for development of a tropical storm. That high pressure system should help veer it right into us by the holiday weekend. End of the holiday weekend. David? Ginger, thank you. Let's hope that terrain in Puerto Rico helps shear the thank you, ginger. Next tonight, new images

This transcript has been automatically generated and may not be 100% accurate.

{"duration":"3:31","description":"FEMA officials said that even though the power grid in the American territory is still fragile after Hurricane Maria devastated the island in 2017, they are far better prepared this time around.","mediaType":"default","section":"ABCNews/WNT","id":"65229423","title":"Tropical Storm Dorian gaining strength as it heads for Puerto Rico","url":"/WNT/video/tropical-storm-dorian-gaining-strength-heads-puerto-rico-65229423"}