Hurricane Katrina had just become a category 1 hurricane when the Moderate Resolution
Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite captured this image on August 25, 2005, at 12:30 p.m., Eastern Daylight Savings Time. The hurricane formed as a tropical depression late on August 23 and developed quickly into a tropical storm by 11 a.m. the next morning. By the time MODIS acquired this image, the storm had developed into a category 1 hurricane, the lowest category in the hurricane-strength scale. Katrina had winds of 120 kilometers per hour (75 miles per hour).
A more serious danger is Katrina’s rains. The storm was moving quite slowly as of August 26, just 10 km/hr (6 mph). This means that Katrina’s heavy rains will
linger longer over one area, dumping 15-25 centimeters (6-10
inches) of rain over Florida and the Bahamas and possibly up to 38
cm (15 inches) in some regions, the National Hurricane Center
Hurricane Katrina exploded into a category 5 storm on August 28, 2005, as it moved north through the Gulf of Mexico towards the United States. It was one of the most powerful storms on record for the Atlantic Basin.