Mice range in color from white to light brown, dark brown, silver, gray or black. Some mice exhibit dual coloration. White and brown is the most common of these combinations, while some specimens may have white, brown and black coats.
Katrina was the most destructive storm to strike the United States and the costliest storm in U.S. history, causing $108 billion in damage, according to the National Oceanic and Atmospheric Administration (NOAA). It ranks sixth overall in strength of recorded Atlantic hurricanes.
The warning means tropical storm conditions, including sustained winds of at least 39 mph, were expected in the next 24 hours. Katrina is the 11th named storm of the busy 2005 Atlantic hurricane season, with more than three months to go.