It's approaching the western end of Cuba as a category 4 hurricane already. It looks like it will hit the U.S. on Monday night or Tuesday morning. The mayor of New Orleans said today, "I am strongly, strongly encouraging everyone in this city to evacuate. Start the process now." From cnn.com: "Mississippi Gov. Haley Barbour announced Friday that Hurricane Katrina victims living in government-issued trailers or mobile homes along his state's coast would begin evacuating Saturday."