Tropical Storm Imelda – Latest from the National Hurricane Center (5 AM Tuesday, Sept 30, 2025)

Imelda has reorganized overnight, with deep convection firing back up on the western side of the circulation. A Hurricane Hunter flight late last night measured a central pressure of 983 mb, and satellite trends since then suggest the storm is strengthening. Maximum sustained winds have been nudged up to 70 mph (60 kt).

Track & Timing

• Imelda has finally made the turn away from the U.S. mainland, now moving toward the northeast at 8 mph.

• Forecast guidance keeps the storm on a general east-northeast path, bringing it very close to Bermuda late Wednesday into Thursday.

• Some binary interaction (“Fujiwhara effect”) with Hurricane Humberto is helping to tug Imelda a little farther south compared to earlier forecasts.

Intensity & Structure

• Imelda is expected to become a hurricane later today.

• By Wednesday, interaction with a mid-latitude trough will fuel further strengthening as the system transitions into a powerful hybrid storm.

• Models suggest the development of a sting jet feature on the south/west side of the cyclone Wednesday, increasing the risk of damaging winds even if Imelda’s structure is not a classic hurricane.

Impacts

• Bermuda: Hurricane conditions possible by Wednesday afternoon, with 2–4 inches of rainfall (50–100 mm). A Hurricane Watch is in effect.

• U.S. East Coast: While the storm is moving out to sea, locally heavy rain could continue across parts of southeast North Carolina through tonight.

• Marine & Coastal Hazards: Both Imelda and Humberto will contribute to swells, high surf, and dangerous rip currents along much of the East Coast over the next several days.

Key Takeaway: Imelda is strengthening and expected to become a hurricane today, posing a significant threat to Bermuda on Wednesday. The U.S. mainland avoids a direct hit, but coastal hazards remain a concern.