Tropical Storm Arthur Forms as First Atlantic Storm of the Season
- The National Hurricane Center confirms Tropical Storm Arthur has formed in the Atlantic, marking the first named storm of the 2026 hurricane season.
- As of Wednesday, June 18, Arthur is located about 200 miles east of the Lesser Antilles and moving westward at 15 mph, according to the NHC.
- The National Weather Service in Miami has issued advisories for Puerto Rico, the Dominican Republic, and southern Florida, urging residents to monitor updates.
The National Hurricane Center confirms Tropical Storm Arthur has formed in the Atlantic, marking the first named storm of the 2026 hurricane season.
As of Wednesday, June 18, Arthur is located about 200 miles east of the Lesser Antilles and moving westward at 15 mph, according to the NHC. Forecasters warn the storm could bring heavy rainfall, gusty winds, and potential flooding to parts of the Caribbean and southeastern United States by early next week.
The National Weather Service in Miami has issued advisories for Puerto Rico, the Dominican Republic, and southern Florida, urging residents to monitor updates. Arthur is expected to strengthen before reaching land, though its exact path remains under review.
Why is this storm significant?
Arthur’s formation arrives nearly two weeks ahead of the official June 1 start date for the Atlantic hurricane season, which runs through November 30. The National Oceanic and Atmospheric Administration (NOAA) had previously predicted an above-average season in its May outlook, citing warmer ocean temperatures as a key factor.
What happens next?
The NHC’s latest track suggests Arthur will pass near the northern Leeward Islands on Thursday before nearing Puerto Rico and Hispaniola by Friday. A tropical storm warning remains in effect for Barbados, St. Lucia, and Martinique, with additional alerts possible for Florida’s east coast by Saturday.
Residents in high-risk areas are advised to secure loose items, prepare emergency kits, and avoid flood-prone regions. The NHC will issue updated forecasts at 11 a.m. and 5 p.m. EDT daily.
How does this compare to past early-season storms?
Arthur follows a trend of increasingly early tropical activity. In 2020, Tropical Storm Arthur formed on May 17, the earliest in recorded history. Climate scientists, including those at NOAA, link this pattern to rising sea surface temperatures, which provide more energy for storm development.
For the latest updates, visit the National Hurricane Center or your local National Weather Service office.