0600 UTC (2:00 a.m. EDT) – Tropical Depression Eighteen develops from an area of low pressure roughly 55 mi (90 km) north of. 1800 UTC (2:00 p.m. AST) – Tropical Storm Ophelia intensifies into a Category 1 hurricane roughly 200 mi (320 km) north of the Leeward Islands. 2300 UTC (7:00 p.m. AST August 20) – Tropical Storm Irene makes its first landfall on, 0000 UTC (7:00 p.m. CDT August 21) – Tropical Depression Harvey regains tropical storm status in the, 0200 UTC (9:00 p.m. CDT August 21) – Tropical Storm Harvey makes its second and final landfall near, 0525 UTC (1:25 a.m. AST) – Tropical Storm Irene makes its second landfall near, 0600 UTC (2:00 a.m. AST) – Tropical Storm Irene intensifies into a Category 1 hurricane on the, 1800 UTC (1:00 p.m. CDT) – Tropical Depression Harvey dissipates roughly 85 mi (140 km) southwest of. 0600 UTC (2:00 a.m. AST) – Tropical Depression Seven intensifies into Tropical Storm Gert. 1200 UTC (8:00 a.m. AST) - Tropical Depression Three intensifies into Tropical Storm Cindy. 1730 UTC (12:30 p.m. CDT) – Tropical Storm Harvey reaches its peak intensity with winds of 65 mph (100 km/h) and simultaneously makes its first landfall near. 0600 UTC (1:00 a.m. CDT) – Tropical Storm Harvey weakens to a tropical depression. 1800 UTC (2:00 p.m. AST) – Hurricane Katia weakens to a Category 2 hurricane. XML index of all Tropical Cyclone Reports, Atlantic | Eastern Pacific | Central Pacific. 0000 UTC (8:00 a.m. EDT) – Tropical Depression Eighteen intensifies into Tropical Storm Rina. This is a table of all of the storms that have formed in the 2011 Atlantic hurricane season. About Us 1200 UTC (7:00 a.m. CDT) – Tropical Storm Lee reaches its peak intensity with winds of 60 mph (95 km/h) and simultaneously transitions into a. This timeline includes information that was not operationally released, meaning that data from post-storm reviews by the National Hurricane Center, such as a storm that was not operationally warned upon, has been included. It was well above average in the number of tropical cyclones that formed, at 19. 1200 UTC (8:00 a.m. AST) – Hurricane Katia weakens to a Category 1 hurricane. The 2011 Atlantic hurricane season was an event in the annual hurricane season in the north Atlantic Ocean. The 2011 Atlantic hurricane season was one of the most active Atlantic hurricane seasons since 1851. 1000 UTC (6:00 a.m. AST) – Tropical Storm Ophelia transitions into an extratropical cyclone south of Newfoundland. Even so, it was the first season on record in which the first eight storms failed to attain hurricane strength. 1200 UTC (7:00 a.m. CDT) – Hurricane Rina weakens to a tropical storm roughly 75 mi (120 km) south-southeast of, 0200 UTC (9:00 p.m. CDT) – Tropical Storm Rina makes landfall near, 1800 UTC (1:00 p.m. CDT) – Tropical Storm Rina degenerates into a non-convective remnant area of low pressure south of. 1200 UTC (8:00 a.m. EDT) – Hurricane Irene intensifies into a Category 3 hurricane, the first major hurricane of the 2011 season, and simultaneously reaches its peak intensity with winds of 120 mph (195 km/h). hurricanes. 1200 UTC (8:00 a.m. AST) – Tropical Storm Ophelia degenerates into a remnant area of low pressure roughly 180 mi (350 km) east of the Leeward Islands. 0600 UTC (2:00 a.m. AST) – Tropical Storm Philippe re-intensifies into a Category 1 hurricane roughly 400 mi (645 km) south-southeast of Bermuda. 1800 UTC (1:00 p.m. AST) – Subtropical Storm Sean transitions into a fully tropical storm. Hurricanes reaching Category 3 (wind speeds of 111 miles per hour (179 km/h)) or higher on the 5-level, Timeline of the 2011 Pacific hurricane season, National Oceanic and Atmospheric Administration, "Background Information: The North Atlantic Hurricane Season", Atlantic Oceanographic and Meteorological Laboratory, "2011 Atlantic hurricane season in review", "Active 2011 hurricane season breaks 'Hurricane Amnesia, Tropical Cyclone Report: Tropical Storm Lee, Tropical Cyclone Report: Tropical Storm Arlene, Tropical Cyclone Report: Tropical Storm Bret, Tropical Cyclone Report: Tropical Storm Cindy, Tropical Cyclone Report: Tropical Storm Don, Tropical Cyclone Report: Tropical Storm Emily, Tropical Cyclone Report: Tropical Storm Franklin, Tropical Cyclone Report: Tropical Storm Gert, Tropical Cyclone Report: Tropical Storm Harvey, Tropical Cyclone Report: Tropical Depression Ten, Tropical Cyclone Report: Tropical Storm Jose, Tropical Cyclone Report: Unnamed Tropical Storm, Tropical Cyclone Report: Hurricane Ophelia, Tropical Cyclone Report: Hurricane Philippe, Tropical Cyclone Report: Tropical Storm Sean, Hurricanes and Tropical Storms – Annual 2011, National Centers for Environmental Information, https://en.wikipedia.org/w/index.php?title=Timeline_of_the_2011_Atlantic_hurricane_season&oldid=989976955, Articles which contain graphical timelines, Creative Commons Attribution-ShareAlike License.