CRAWFORDVILLE, Fla. (AP) — Hurricane Helene made landfall in northwestern Florida as a Category 4 storm as forecasters warned that the enormous system could create a “nightmare” storm surge and bring dangerous winds and rain across much of the southeastern U.S. There were at least three storm-related deaths.

The National Hurricane Center in Miami said Helene roared ashore around 11:10 p.m. Thursday near the mouth of the Aucilla River in the Big Bend area of Florida’s Gulf Coast. It had maximum sustained winds estimated at 140 mph (225 kph). That location was only about 20 miles (32 kilometers) northwest of where Hurricane Idalia came ashore last year at nearly the same ferocity and caused widespread damage.

Helene prompted hurricane and flash flood warnings extending far beyond the coast up into northern Georgia and western North Carolina. More than 1.2 million homes and businesses were without power in Florida, more than 190,000 in Georgia and more than 30,000 in the Carolinas, according to the tracking site poweroutage.us. The governors of those states and Alabama and Virginia all declared emergencies.

One person was killed in Florida when a sign fell on their car and two people were reported killed in a possible tornado in south Georgia as the storm approached.

“When Floridians wake up tomorrow morning, we’re going to be waking up to a state where very likely there’s been additional loss of life and certainly there’s going to be loss of property,” Florida Gov. Ron DeSantis said at a news conference Thursday night.

Helene was moving rapidly inland after making landfall, with the center of the storm set to race from southern to northern Georgia through early Friday morning. The risk of tornadoes also would continue overnight and into the morning across north and central Florida, Georgia, South Carolina and southern North Carolina, forecasters said. Later Friday, there would be the risk of tornadoes in Virginia.

“Helene continues to produce catastrophic winds that are now pushing into southern Georgia,” the hurricane center said in an update at 1 a.m. Friday. “Persons should not leave their shelters and remain in place through the passage of these life-threatening conditions.”

The hurricane’s eye passed near Valdosta, Georgia, as the storm churned rapidly north into Georgia Thursday night. The National Hurricane Center issued an extreme wind warning for the area, meaning possible hurricane-force winds exceeding 115 mph (185 kph).

At a hotel in the city of 55,000 near the Florida line, dozens of people huddled in the darkened lobby after midnight Friday as winds whistled and howled outside. Electricity was out, with hall emergency lights, flashlights and cellphones providing the only illumination. Water dripped from light fixtures in the lobby dining area and roof debris fell to the ground outside.

Fermin Herrera, 20, his wife and their 2-month-old daughter left their room on the top floor of the hotel, where they took shelter because they were concerned about trees falling on their Valdosta home.

“We heard some rumbling,” said Herrera, cradling the sleeping baby in a downstairs hallway. “We didn’t see anything at first. After a while the intensity picked up. It looked like a gutter that was banging against our window. So we made a decision to leave.”

Helene is the third storm to strike the city in just over a year. Tropical Storm Debby blacked out power to thousands in August, while Hurricane Idalia damaged an estimated 1,000 homes in Valdosta and surrounding Lowndes County a year ago.

“I feel like a lot of us know what to do now,” Herrera said. “We’ve seen some storms and grown some thicker skins.”

Even before landfall, the storm’s wrath was felt widely, with sustained tropical storm-force winds and hurricane-force gusts along Florida’s west coast. Water lapped over a road in Siesta Key near Sarasota and covered some intersections in St. Pete Beach. Lumber and other debris from a fire in Cedar Key a week ago crashed ashore in the rising water.

Beyond Florida, up to 10 inches (25 centimeters) of rain had fallen in the North Carolina mountains, with up to 14 inches (36 centimeters) more possible before the deluge ends, setting the stage for flooding that forecasters warned could be worse than anything seen in the past century.

Heavy rains began falling and winds were picking up earlier Thursday in Valdosta, Georgia, near the Florida state line. The weather service said more than a dozen Georgia counties could see hurricane-force winds exceeding 110 mph (177 kph).

In south Georgia, two people were killed when a possible tornado struck a mobile home on Thursday night, Wheeler County Sheriff Randy Rigdon told WMAZ-TV. Wheeler County is about 70 miles (113 kilometers) southeast of Macon.

The storm made landfall in the sparsely-populated Big Bend area, home to fishing villages and vacation hideaways where Florida’s Panhandle and peninsula meet.

“Please write your name, birthday, and important information on your arm or leg in a PERMANENT MARKER so that you can be identified and family notified,” the sheriff’s office in mostly rural Taylor County warned those who chose not to evacuate in a Facebook post, the dire advice similar to what other officials have dolled out during past hurricanes.

Still, Philip Tooke, a commercial fisherman who took over the business his father founded near the region’s Apalachee Bay, planned to ride out this storm like he did during Hurricane Michael and the others — on his boat. “If I lose that, I don’t have anything,” Tooke said. Michael, a Category 5 storm, all but destroyed one town, fractured thousands of homes and businesses and caused some $25 billion in damage when it struck the Florida Panhandle in 2018.

Many, though, were heeding the mandatory evacuation orders that stretched from the Panhandle south along the Gulf Coast in low-lying areas around Tallahassee, Gainesville, Cedar Key, Lake City, Tampa and Sarasota.

Among them were Cindy Waymon and her husband, who went to a shelter in Tallahassee after securing their home and packing medications, snacks and drinks. They wanted to stay safe given the magnitude of the storm, she said.

“This is the first time we’ve actually come to a shelter, because of the complexities of the storm and the uncertainties,” she said.

Federal authorities staged search-and-rescue teams as the weather service forecast storm surges of up to 20 feet (6 meters) and warned they could be particularly “catastrophic and unsurvivable” in Apalachee Bay.

“Please, please, please take any evacuation orders seriously!” the office said, describing the surge scenario as “a nightmare.”

This stretch of Florida known as the Forgotten Coast has been largely spared by the widespread condo development and commercialization that dominates so many of Florida’s beach communities. The region is loved for its natural wonders including the vast stretches of salt marshes, tidal pools and barrier islands.

“You live down here, you run the risk of losing everything to a bad storm,” said Anthony Godwin, who lives about a half-mile (800 meters) from the water in the coastal town of Panacea, as he stopped for gas before heading west toward his sister’s house in Pensacola.

School districts and multiple universities canceled classes. Airports in Tampa, Tallahassee and Clearwater were closed Thursday, while cancellations were widespread elsewhere in Florida and beyond.

While Helene will likely weaken as it moves inland, damaging winds and heavy rain were expected to extend to the southern Appalachian Mountains, where landslides were possible, forecasters said. Tennessee was among the states expected to get drenched.

Helene had swamped parts of Mexico’s Yucatan Peninsula on Wednesday, flooding streets and toppling trees as it passed offshore and brushed the resort city of Cancun. In western Cuba, Helene knocked out power to more than 200,000 homes and businesses as it brushed past the island.

Areas 100 miles (160 kilometers) north of the Georgia-Florida line expected hurricane conditions. The state opened its parks to evacuees and their pets, including horses. Overnight curfews were imposed in many cities and counties in south Georgia.

“This is one of the biggest storms we’ve ever had,” Georgia Gov. Brian Kemp said.

For Atlanta, Helene could be the worst strike on a major Southern inland city in 35 years, said University of Georgia meteorology professor Marshall Shepherd.

Helene is the eighth named storm of the Atlantic hurricane season, which began June 1. The National Oceanic and Atmospheric Administration has predicted an above-average Atlantic hurricane season this year because of record-warm ocean temperatures.

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Hollingsworth reported from Kansas City, Missouri. Associated Press journalists Seth Borenstein in New York, Jeff Amy in Atlanta, Russ Bynum in Valdosta, Georgia, Danica Coto in San Juan, Puerto Rico, Andrea Rodríguez in Havana, Mark Stevenson and María Verza in Mexico City and Claire Rush in Portland, Oregon, contributed to this report.