AL90: What You Should Know About the Disturbance East of Bermuda

A low-pressure system designated as Invest 90L (AL90) continues to show signs of organization in the central subtropical Atlantic, about 500 miles east of Bermuda. While it is no threat to the United States, it serves as an early reminder that the 2025 Atlantic hurricane season is beginning to stir.

What We Know About AL90
As of early Monday morning, AL90 has sustained winds between 30 and 35 mph and a well-defined surface circulation. Satellite and wind data from overnight suggest the system could become a short-lived tropical depression or storm later today. The National Hurricane Center currently gives it a 70 percent chance of development over the next 48 hours.

Environmental conditions around the system are only marginally favorable, and it is expected to move northeastward into cooler waters and stronger wind shear by Tuesday, which would end its development window. The system will remain over open Atlantic waters and will not impact the U.S. East Coast.

Why It Still Matters
Even though AL90 is staying out to sea, its development tells us something important: the Atlantic is warming, and the pattern is turning more favorable for tropical activity. This is consistent with seasonal outlooks that call for an above-average hurricane season due to warm sea surface temperatures and an ongoing La Niña transition.

Hurricane Season Readiness
Rowan County has experienced indirect tropical impacts before — from heavy rain and flooding to power outages from distant storm remnants. While AL90 won’t be one of those, it is a timely reminder to:

• Review your emergency plans

• Check hurricane kits and storm supplies

• Monitor future developments as the season ramps up

The official peak of hurricane season is still ahead in August and September, but systems like AL90 show that activity can begin early. Rowan County Weather will continue to track developments in the tropics and bring you clear, reliable updates.

Stay informed, stay prepared, and stay weather-aware.