HILO, Hawaii --Preparing for what could be the first hurricane to make landfall in Hawaii in years, residents on the Big Island are stocking up on food and water and seeking shelter for their animals.
The National Weather Service issued a hurricane warning as the storm dubbed Madeline churned west Tuesday toward the island, urging residents to rush through preparations to protect themselves and their property and expect hurricane conditions within the next 36 hours.
RELATED: Hurricanes predicted for Hawaii could impact travel from Bay Area
Peggy Beckett, a retiree and beekeeper, stopped at a Hilo supermarket to pick up some onions bagels, cheese, cold cuts and salad to add to her canned food at home. She has a cooler with ice in it plus a portable burner and batteries to get her through the storm.
"There's always a lot of disbelief on the island that the storms will really be as big and bad as forecast," Beckett said.
The Keaau resident and her partner made sure to put extra rocks on their beehives to protect them from the storm.
Noting the lines of people inside the supermarket, Beckett said she thought people were getting prepared but weren't panicking.
Hurricane Madeline was downgraded from a Category 3 storm to a 2, before being further downgraded to a Category 1 with sustained winds of about 90 mph.
It was weakening as it approached the islands and was expected to pass just south of the Big Island around 2 a.m. Thursday (5 a.m. PDT). But if the storm track shifts slightly to the north, the eye of the storm could pass over land.
"Hopefully our roofs stay on, and our houses don't float way or get blown away," said Big Island resident Mitzi Bettencourt, who boarded up walls of glass windows at her brother's oceanfront home. "It's like, 'Oh my God, are we going to get flattened or what?' "
Bettencourt, who lives in a subdivision called Kapoho Vacationland, manages several vacation rental properties and has her own home to worry about, which sits a few blocks from the ocean. She and her neighbors were stocking their pantries, stowing away lawn furniture and preparing for power outages.
"If they're not prepared now, they should get prepared fast," said Chevy Chevalier, a meteorologist with the weather service.
WATCH NOW: Weather forecast for Wednesday
The last hurricane to make landfall in Hawaii was Hurricane Iniki in 1992, which hit Kauai, Chevalier said.
A second Pacific hurricane, called Lester, is still far from Hawaii, and it is expected to weaken to a tropical storm as it passes the state, Chevalier said.
Gov. David Ige issued an emergency proclamation for both storms, which will allow the state to quickly spend money to alleviate disasters. "I urge you to take immediate steps to protect your families, loved ones, employees and property," Ige said in a statement.
The state Department of Education announced public schools would be closed Wednesday and Thursday in anticipation of severe weather, and about a dozen schools were turned into emergency shelters.
President Barack Obama is scheduled to visit Oahu this week. The White House is tracking the weather developments closely, but it doesn't anticipate changing Obama's schedule.
The islands of Maui, Molokai and Lanai were under a tropical storm watch, but there were no alerts for Oahu or Kauai.
On the Big Island, Hawaii Volcanoes National Park was closing some areas Tuesday, and park officials planned for the coastal lava viewing area to close by Wednesday morning. Some camping areas were closing, but guests staying at Kilauea Military Camp and Volcano House were allowed to shelter in place.
The U.S. Coast Guard asked crews of barges and ships to prepare to leave Hilo Harbor and told ocean-going vessels to seek sheltered waters until storm conditions subside. Captain Mike Long said he expected to close Hilo Harbor to all traffic by 8 p.m. Tuesday.
Hawaii County, which covers the Big Island, urged residents to restock their emergency kits with a flashlight, fresh batteries, cash and first-aid supplies. It recommended that residents create evacuation plans and secure outdoor furniture.
Hawaiian Airlines said customers holding tickets to or from Hawaii's Big Island from Aug. 31 to Sept. 1 would be allowed a one-time reservation change without a fee.
A lot of people are currently traveling from the Bay Area to Hawaii. At last check, all flights out of SFO and Oakland are on time.
Click here for travel alerts from Hawaiian Airlines on the hurricanes.
For more hurricane-related stories, click here.