People lined up in cars on Saturday in St. Petersburg, Florida, to gather sandbags ahead of Hurricane Milton. Milton rapidly strengthened into a Category 5 hurricane, the strongest level, in the Gulf of Mexico on Monday on a path toward Florida, threatening a dangerous storm surge in Tampa Bay and setting the stage for potential mass evacuations less than two weeks after a catastrophic Hurricane Helene swamped the coastline. Milton had maximum sustained winds of 160 mph (250 kph), the National Hurricane Center said. Its center could come ashore Wednesday in the Tampa Bay area, and it could remain a hurricane as it moves across central Florida toward the Atlantic Ocean. That would largely spare other states ravaged by Helene, which killed at least 230 people on its path from Florida to the Appalachian Mountains. A hurricane warning was issued for parts of Mexico’s Yucatan state, and much of Florida’s west coast was under hurricane and storm surge watches. Florida’s Lake Okeechobee, which often floods during intense storms, was also under a hurricane watch. “This is the real deal here with Milton,” Tampa Mayor Jane Castor said at a news conference. “If you want to take on Mother Nature, she wins 100% of the time.” Milton was a Category 4 storm with maximum sustained winds of 155 mph (250 kph) Monday morning over the southern Gulf of Mexico, the National Hurricane Center said. It was forecast to become a Category 5 storm later Monday with winds greater than 157 mph (250 kph) and become a large hurricane over the eastern Gulf. Its center could come ashore Wednesday in the Tampa Bay area, and it could remain a hurricane as it moves across central Florida toward the Atlantic Ocean. That would largely spare other states ravaged by Helene, which killed at least 230 people on its path from Florida to the Appalachian Mountains. Forecasters warned of a possible 8- to 12-foot storm surge (2.4 to 3.6 meters) in Tampa Bay and said flash and river flooding could result from 5 to 10 inches (13 to 25 centimeters) of rain in mainland Florida and the Keys, with as much as 15 inches (38 centimeters) in places. The Tampa Bay area is still cleaning up extensive damage from Helene and its powerful surge. Twelve people perished, with the worst damage along a 20-mile (32-kilometer) string of barrier islands from St. Petersburg to Clearwater. Read more: https://www.9news.com/article/news/nation-world/milton-strengthens-into-a-category-3-hurricane/507-ce842603-5ed0-427b-b25e-8abe8f1b81bc Video: CNN More local videos here: https://bit.ly/2Pa0d1l Subscribe to NEXT: http://bit.ly/2eP1GwI Stay connected: 9NEWS Website: http://www.9news.com/ Facebook: https://www.facebook.com/ilike9news Twitter: https://twitter.com/9NEWS Instagram: https://www.instagram.com/9newsdenver/ Download the 9NEWS App: https://www.9news.com/appredirect/ Sign up for the 9NEWSLETTER: https://www.9news.com/email 9NEWS (KUSA) is located in Denver, Colorado.