Puerto Rico (San Juan): Variably cloudy skies with scattered showers and isolated thunderstorms Friday. Highs near 91°F with east winds at 10–15 mph. Conditions will worsen over the weekend, with 90% rain chances on Sunday and breezy south-southwest winds up to 20 mph as Erin passes north.

Erin, the first hurricane of the season, is now forecast to become a Category 4 by Sunday. Here's where it could head in the week ahead.

Tropical Storm Erin is approaching Puerto Rico and the Virgin Islands, bringing heavy rains that could cause flooding and landslides

Hurricane Erin will continue to strengthen as it approaches the Leeward Island and Puerto Rico, where it will threaten with tropical downpours, pounding surf and strong winds.

Erin, the first hurricane of the season, is now forecast to become a Category 4 by Sunday. Here's where it could head in the week ahead.

Hurricane Erin became the first hurricane of the 2025 Atlantic season Friday (Aug. 15) morning, strengthening as it moves toward the northeast Caribbean and prompting tropical storm watches for parts of the northern Leeward Islands.

As of the latest update, issued at 4 a.m. CDT Thursday, Tropical Storm Erin was located about 990 miles east of the Leeward Islands and was on a path to the west at 17 mph. (The next update will come later this morning, and updates will become more frequent once watches and warnings go into effect for the storm.)

Erin is expected to reach major hurricane intensity this weekend as it tracks just north of the Caribbean islands, where it could bring rain, gusty winds and high surf. Erin's longer-term future through next week is still somewhat uncertain,