Tropical Storm Tammy Moving Slower While Increasing in Strength

National Hurricane Center (NHC) – At 800 AM AST (1200 UTC), the center of Tropical Storm Tammy was located near latitude 14.0 North, longitude 58.4 West. 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 800 AM AST (1200 UTC), the center of Tropical Storm Tammy was located near latitude 14.0 North, longitude 58.4 West. 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 both NOAA and Air Force Reserve Hurricane Hunter aircraft indicate that maximum sustained winds have increased to near 65 mph (100 km/h) with higher gusts. Gradual strengthening is forecast during the next few days, and Tammy is expected to be at or near hurricane intensity while it moves near or over portions of the Leeward Islands.

Tropical-storm-force winds extend outward up to 140 miles (220 km) from the center. The minimum central pressure based on reconnaissance aircraft data is 1000 mb (29.53 inches).