At 2:00 a.m. Atlantic Standard Time (AST) on August 27, 2010, the U.S. National Hurricane Center (NHC) reported that Hurricane Danielle had strengthened into a major hurricane. Nine hours later, the NHC reported that Danielle was a Category 4 hurricane, with maximum sustained winds of 135 miles (215 kilometers) per hour and higher gusts. The storm was about 480 miles (770 kilometers) southeast of Bermuda.
The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite captured this natural-color image of Hurricane Danielle at 10:25 AST (14:25 UTC) on August 27, 2010. Danielle sports a distinct eye in the middle of its spiraling clouds. As it did the previous day, the storm sends its longest spiral arms toward the northeast.
As of 11:00 a.m. August 27, 2010, the NHC reported no coastal watches or warnings, but warned that dangerous surf conditions would affect Bermuda over the next few days. The NHC further forecast that swells from Danielle would start arriving on U.S. East Coast shores on August 28, probably leading to rip currents August 28 and 29.
Danielle formed as a tropical depression over the Atlantic Ocean on August 22, 2010, and strengthened to a tropical storm the next day. On August 27, Danielle strengthened into a major hurricane. By August 29, the hurricane was back to category one and losing energy in the North Atlantic.