320 mi (520 km) southwest of Dakar, Senegal. 06:00 UTC (2:00 a.m. AST) at Tropical Depression Thirteen strengthens to Tropical Storm Lorenzo. 06:00 UTC (2:00 a.m. AST) at Tropical Storm Karen weakens to a tropical depression about 160 mi (260 km) west of Saint Vincent and about 315 mi (510 km) south-southeast of Saint Croix, U.S. Virgin Islands. September 24 06:00 UTC (2:00 a.m. AST) at Tropical Depression Karen re-strengthens to a tropical storm about 120 mi (190 km) south-southwest of Isla de Vieques, Puerto Rico. 18:00 UTC (2:00 p.m. AST) at Tropical Storm Jerry transitions to a post-tropical cyclone about 282 mi (454 km) west-southwest of Bermuda and subsequently degenerates into an extratropical trough of low pressure. 22:00 UTC (6:00 p.m. AST) at Tropical Storm Karen makes landfall at Vieques with sustained winds of 45 mph (75 km/h). 23:00 UTC (7:00 p.m. AST) at Tropical Storm Karen makes landfall at Isla Culebra, Puerto Rico with sustained winds of 45 mph (75 km/h). September 25 00:00 UTC (8:00 p.m. AST September 24) at Tropical Storm Karen attains its lowest barometric pressure of . 06:00 UTC (2:00 a.m. AST) at Tropical Storm Lorenzo strengthens to a Category 1 hurricane. September 26 00:00 UTC (8:00 p.m. AST September 25) at Hurricane Lorenzo strengthens to a Category 2 hurricane. 12:00 UTC (8:00 a.m. AST) at Hurricane Lorenzo strengthens to a Category 3 hurricane. 18:00 UTC (2:00 p.m. AST) at Hurricane Lorenzo strengthens to a Category 4 hurricane. September 27 12:00 UTC (8:00 a.m. AST) at Tropical Storm Karen weakens to a tropical depression and dissipates shortly thereafter over the central Atlantic Ocean, about 350 mi (560 km) southeast of Bermuda. 18:00 UTC (2:00 p.m. AST) at Hurricane Lorenzo weakens to a Category 3 hurricane. September 28 18:00 UTC (2:00 p.m. AST) at Hurricane Lorenzo re-strengthens to a Category 4 hurricane. September 29 03:00 UTC (11:00 p.m. AST September 28) at Hurricane Lorenzo strengthens to a Category 5 hurricane, and simultaneously reaches its peak intensity with maximum sustained winds of 160 mph (260 km/h) and a minimum barometric pressure of about 1,600 (2,600 km) southwest of the Azores. 06:00 UTC (2:00 a.m. AST) at Hurricane Lorenzo weakens to a Category 4 hurricane. 12:00 UTC (8:00 a.m. AST) at Hurricane Lorenzo weakens to a Category 3 hurricane. 18:00 UTC (2:00 p.m. AST) at Hurricane Lorenzo weakens to a Category 2 hurricane. October October 2 06:00