Rainfall was projected to be between along the path of the storm. In addition, the National Hurricane Center noted the likelihood of isolated tornadoes in Central and South Florida during the passage of Andrew on August 23 and 24. Several tropical storm and hurricane warnings were issued for much of Central and South Florida, from Titusville on the east coast to Venice on the west coast. Included in the warnings were Lake Okeechobee and all of the Florida Keys. By 18:00 UTC on August 24, all watches and warnings issued were discontinued after Andrew progressed into the Gulf of Mexico. Governor Lawton Chiles declared a state of emergency and activated about one-third of the Florida National Guard. Many residents evacuated, most voluntarily, from Broward, Charlotte, Collier, Lee, Martin, Dade, Monroe, Palm Beach, and Sarasota counties. A total of 142 shelters opened in these counties and collectively housed at least 84,340 people. In Dade County alone, 515,670 people were ordered to evacuate. As Andrew was approaching, an estimated 20,000–30,000 tourists were in the Florida Keys (Monroe County). Overall, almost 1.2 million people evacuated, which contributed to the low number of fatalities, despite the intensity of the storm. Many evacuees also checked into hotels, with rooms completely booked as far north as Ocala. Ultimately, the sheer number of evacuees led to likely the largest traffic jam in the history of Florida, mostly along Interstate 95. United States Coast Guard vessels on or near the Florida coastline were either secured onshore or sent to ride out the storm at sea. Government offices and public and private schools were closed from Monroe County northward to St. Lucie County. Many colleges and universities in southeast Florida also closed. Major airports such as the Fort Lauderdale–Hollywood, Key West, Miami, and Palm Beach international airports closed. Gulf Coast of the United States Shortly after the storm emerged into the Gulf of Mexico from southern Florida, the National Hurricane Center issued hurricane watches and warnings for the Gulf Coast of the United States beginning at 13:00 UTC on August 24. After the initial hurricane watch from Mobile, Alabama, to Sabine Pass, Texas, the watches and warnings were expanded to eventually include areas from Mobile, Alabama, to Freeport, Texas. All watches and warnings on the Gulf Coast were discontinued late on August 26 after the hurricane moved inland over Louisiana. Due to the hurricane's threat, workers fled oil platforms