Tropical Cyclone 18L (Sam)…is located about 1215 miles east-southeast of the northern Leeward Islands
Sub-Tropical Cyclone 19L (Teresa)…is located about 140 miles north-northwest of Bermuda
Tropical Cyclone 18L (Sam)
SAM NOW A CATEGORY 2 HURRICANE…FORECAST TO BECOME A MAJOR HURRICANE ON SATURDAY
According to the NHC Advisory 10…Sam is moving toward the west-northwest near 14 mph (22 km/h). A motion toward the west or west-northwest with a decrease in forward speed is expected over the weekend. A turn toward the northwest is forecast on Monday. Maximum sustained winds have increased to near 100 mph (155 km/h) with higher gusts. Additional strengthening is forecast, and Sam is expected to become a major hurricane on Saturday. Sam is a small hurricane. Hurricane-force winds extend outward up to 15 miles (30 km) from the center and tropical-storm-force winds extend outward up to 60 miles (95 km).
Sub-Tropical Cyclone 19L (Teresa)
TERESA LIKELY TO BE SHORT-LIVED
According to the NHC Advisory 2…The storm is moving toward the west-northwest near 10 mph (17 km/h), and a turn toward the north and northeast is expected during the next day or two. Maximum sustained winds are near 45 mph (75 km/h) with higher gusts. Little change in strength is forecast during the next 36 hours. Teresa should dissipate in about two days. Winds of 40 mph extend outward up to 115 miles (185 km) from the center.
A tropical wave is expected to move off the west coast of Africa in a couple of days. Thereafter, environmental conditions are forecast to be conducive for gradual development, and a tropical depression could form by the middle of next week while the system moves westward at 10 to 15 mph over the far eastern tropical Atlantic.
* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 5 days…medium…50 percent