UPDATED: Hurricane Michael comes ashore in Florida

Gaining fury with every passing hour, Hurricane Michael has come ashore on the Florida Panhandle with potentially catastrophic winds of 150 mph, the most powerful storm on record ever to menace the stretch of fishing towns, military bases and spring-break beaches.

With more than 375,000 people up and down the Gulf Coast warned to evacuate, the hurricane’s leading edge began lashing the white-sand shoreline with strong winds, rain and rising seas before daybreak.

“I really fear for what things are going to look like there tomorrow at this time,” Colorado State University hurricane expert Phil Klotzbach said in an email.

The supercharged brute quickly sprang from a weekend tropical depression, becoming a furious Category 4 early Wednesday as it drew energy from the Gulf of Mexico’s unseasonably warm, 84-degree waters. Less than a day earlier, Michael was a Category 2.

Hurricane Michael edges towards the Florida panhandle on the morning of Oct. 10. (NOAA)

“The time to evacuate has come and gone ... SEEK REFUGE IMMEDIATELY,” Florida Gov. Rick Scott tweeted, while the sheriff in Panama City’s Bay County issued a shelter-in-place order before dawn.

Diane Farris, 57, and her son walked to a high school-turned-shelter near their home in Panama City to find about 1,100 people crammed into a space meant for about half as many. Neither she nor her son had any way to communicate because their lone cellphone got wet and quit working.

“I’m worried about my daughter and grandbaby. I don’t know where they are. You know, that’s hard,” she said, choking back tears.

Rainfall could reach up to a foot (30 centimeters), and the life-threatening storm surge could swell to 14 feet (4 meters).

The storm appeared to be so powerful that it is expected to remain a hurricane as it moves over Georgia early Thursday. Forecasters said it will unleash damaging wind and rain all the way into the Carolinas, which are still recovering from Hurricane Florence’s epic flooding.

Meteorologists watched satellite imagery in awe as the storm grew in intensity.

“We are in new territory,” National Hurricane Center Meteorologist Dennis Feltgen wrote on Facebook. “The historical record, going back to 1851, finds no Category 4 hurricane ever hitting the Florida panhandle.

Hours ahead of landfall, seawater was already lapping over the docks at Massalina Bayou near downtown Panama City, and knee-deep water was rising against buildings in St. Marks, which sits on an inlet south of Tallahassee, Florida’s capital.

Huge waves pounded the white sands of Panama City Beach, shooting frothy water all the way to the base of wooden stairs that lead to the beach.

More than 5,000 evacuees sought shelter in Tallahassee, which is about 25 miles from the coast but is covered by live oak and pine trees that can fall and cause power outages even in smaller storms.

Only a skeleton staff remained at Tyndall Air Force Base, situated on a peninsula just south of Panama City. The home of the 325th Fighter Wing and some 600 military families appeared squarely targeted for the worst of the storm’s fury, and leaders declared HURCON 1 status, ordering out all but essential personnel.

The base’s aircraft, which include F-22 Raptors, were flown hundreds of miles away as a precaution. Forecasters predicted 9 to 14 feet of water at Tyndall.

Evacuations spanned 22 counties from the Panhandle into north-central Florida. But civilians don’t have to follow orders, and authorities feared that many people ignored the warnings to get out.

“We’ve told those who stayed to have their life jackets on when the storm comes,” Tress Dameron, Franklin County emergency management coordinator, told The News Herald in Panama City.

Power crews are arriving in Florida ahead of Hurricane Michael. (Oct. 10)

In St. Marks, John Hargan and his family gathered up their pets and moved to a raised building constructed to withstand a Category 5 after water from the St. Marks River began surrounding their home.

Hargan’s 11-year-old son, Jayden, carried one of the family’s dogs in a laundry basket in one arm and held a skateboard in the other as he waded through calf-high water.

Hargan, a bartender at a riverfront restaurant, feared he would lose his home and his job to the storm.

“We basically just walked away from everything and said goodbye to it,” he said, tears welling up. “I’m freakin’ scared I’m going to lose everything I own, man.”

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Associated Press writers Tamara Lush in St. Petersburg, Fla.; Freida Frisaro in Miami; Brendan Farrington in St. Marks, Fla.; Russ Bynum in Keaton Beach, Fla.; Jonathan Drew in Raleigh, North Carolina; and Seth Borenstein in Kensington, Md., contributed to this story.