Tropical Storm Erin tracker: Forecast to strengthen into 1st Atlantic hurricane of 2025 by Friday, latest projected path prompts watches for northern Leeward Islands
Tropical Storm watches are now in effect for parts of the northern Leeward Islands as Erin is expected to become the first hurricane of the 2025 Atlantic hurricane season by Friday, according to forecasters at the National Hurricane Center.
Erin formed in the eastern Atlantic Ocean on Monday and is strengthening as it moves westward. The NHC said there is still "a greater than normal uncertainty" about what impact it could have on states like Florida on the U.S. East Coast, as well as the Bahamas and Bermuda.
But forecasters remain confident that Erin "will be a large and powerful hurricane over the southwestern Atlantic Ocean this weekend."
Where is Tropical Storm Erin, and what is its path?
As of 5 p.m. ET Thursday:
Erin was located 790 miles east of the northern Leeward Islands.
The storm has maximum sustained winds of 60 mph.
It is moving west at 17 mph.
"A turn toward the west-northwest is expected tonight, with this motion expected to continue into the weekend," the NHC said. "On the forecast track, the center of Erin is likely to move near or just north of the northern Leeward Islands over the weekend."
The storm is expected to bring areas of heavy rainfall starting late Friday across the northern Leeward Islands, the U.S. and British Virgin Islands, as well as southern and eastern Puerto Rico. Rainfall totals could range from 2 to 4 inches, with up to 6 inches in isolated areas, which could lead to flash or urban flooding and cause mudslides and landslides, the hurricane center said Thursday.
What are the chances it will intensify?
Tropical Storm Erin is expected to strengthen in the next day or so and is forecast to become a hurricane by Friday, forecasters said.
A tropical storm becomes a hurricane when maximum sustained winds reach at least 74 mph. Hurricanes are rated on the Saffir-Simpson Hurricane Wind Scale, ranging from Category 1 to Category 5, with 5 being the most severe. A storm is considered a major hurricane when it reaches Category 3 strength, with sustained winds of at least 111 mph, according to the NHC.
Watches and warnings in place
As of 5 p.m. ET Thursday, these are the following advisories in place, according to the NHC:
Tropical storm watch in effect for:
Anguilla and Barbuda
St. Martin and St. Barthelemy
Saba and St. Eustatius
Sint Maarten
A 'tropical storm watch' means tropical storm conditions are possible in the areas within the next 48 hours.
How is hurricane season shaping up?
The 2025 Atlantic hurricane season, which began June 1 and runs through the end of November, has a 50% chance of being above normal.
Last week, forecasters at the National Oceanic and Atmospheric Administration slightly updated the number of expected storms to 13-18 (estimated at 13-19 in May), five of which could become major hurricanes (with winds of more than 111 mph).
A typical hurricane season averages 14 named storms. We're currently about halfway through this year's hurricane season, and there have been five so far: tropical storms Andrea, Barry, Chantal, Dexter and Erin.
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