Hurricane Tammy Will Bring Hurricane Conditions to Portions of the Leeward Islands

National Hurricane Center (NHC) – At 1100 AM AST (1500 UTC), the center of Hurricane Tammy was located about 165 miles (265 km) east-southeast of Martinique. Tammy is moving toward the west-northwest near 7 mph (11 km/h), and this general motion is expected to continue through this afternoon. A turn toward the northwest is anticipated…

STEPS

October 20, 2023

1–2 minutes

National Hurricane Center (NHC) – At 1100 AM AST (1500 UTC), the center of Hurricane Tammy was located about 165 miles (265 km) east-southeast of Martinique. Tammy is moving toward the west-northwest near 7 mph (11 km/h), and this general motion is expected to continue through this afternoon.

A turn toward the northwest is anticipated by this evening, followed by a north-northwestward and northward turn Saturday night through Sunday night. On the forecast track, the center of Tammy will move near or over portions of the Leeward Islands tonight and on Saturday, and then move north of the northern Leeward Islands on Sunday.

Data from NOAA and Air Force Reserve reconnaissance aircraft indicate that the maximum sustained winds are near 75 mph (120 km/h) with higher gusts. Gradual strengthening is forecast during the next couple of days, and Tammy is expected to be a hurricane while it moves near or over portions of the Leeward Islands.

Hurricane-force winds extend outward up to 25 miles (35 km) from the center and tropical-storm-force winds extend outward up to 140 miles (220 km). The minimum central pressure estimated from reconnaissance aircraft data is 992 mb (29.30 inches).