Then, even as investigators seemed closer than ever to finding the plane, stormy weather forced Australian authorities to call off a day of searching for the Boeing 777.
“It’s almost felt like a miniature roller coaster within the day,” said James Wood, whose brother Philip was one of three American passengers on the plane.
Families are stuck in a “holding pattern,” he told CNN’s “AC360.”
“We’re just waiting and waiting,” he said, “and not getting any answers one way or another.”
Photos: The search for MH370
Two years after Malaysia Airlines Flight 370 went missing, a relative of one of the passengers burns incense in Beijing on March 8, 2016. Flight 370 vanished on March 8, 2014, as it flew from Kuala Lumpur, Malaysia, to Beijing. There were 239 people on board.
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Visual China Group/Getty Images
Photos: The search for MH370
On July 29, police carry a piece of debris on Reunion Island, a French territory in the Indian Ocean. A week later, authorities confirmed that the debris was from the missing flight.
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Lucas Marie/AP
Photos: The search for MH370
Staff members with the Australian Transport Safety Bureau examine a piece of aircraft debris at their laboratory in Canberra, Australia, on July 20. The flap was found in June by residents on Pemba Island off the coast of Tanzania, and officials had said it was highly likely to have come from Flight 370. Experts at the Australian Transport Safety Bureau, which is heading up the search for the plane, confirmed that the part was indeed from the missing aircraft.
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ATSB/AP
Photos: The search for MH370
In late February, American tourist Blaine Gibson found a piece of plane debris off Mozambique, a discovery that renewed hope of solving the mystery of the missing flight. The piece measured 35 inches by 22 inches. A U.S. official said it was likely the wreckage came from a Boeing 777, which MH370 was.
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Blaine Gibson
Photos: The search for MH370
Relatives of the flight's passengers console each other outside the Malaysia Airlines office in Subang, Malaysia, on February 12, 2015. Protesters had demanded that the airline withdraw the statement that all 239 people aboard the plane were dead.
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MANAN VATSYAYANA/AFP/Getty Images
Photos: The search for MH370
A police officer watches a couple cry outside the airline's office building in Beijing after officials refused to meet with them on June 11, 2014. The couple's son was on the plane.
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Andy Wong/AP
Photos: The search for MH370
Members of the media scramble to speak with Azharuddin Abdul Rahman, director general of Malaysia's Civil Aviation Department, at a hotel in Kuala Lumpur, Malaysia, on May 27, 2014. Data from communications between satellites and the missing flight was released the day before, more than two months after relatives of passengers said they requested it be made public.
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MOHD RASFAN/AFP/Getty Images
Photos: The search for MH370
Operators aboard the Australian ship Ocean Shield move Bluefin-21, the U.S. Navy's autonomous underwater vehicle, into position to search for the jet on April 14, 2014.
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Peter D. Blair/U.S. Navy/UPI/LANDOV
Photos: The search for MH370
A member of the Royal New Zealand Air Force looks out of a window while searching for debris off the coast of western Australia on April 13, 2014.
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Greg Wood/Pool/AP
Photos: The search for MH370
The HMS Echo, a vessel with the British Roya; Navy, moves through the waters of the southern Indian Ocean on April 12, 2014.
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British Ministry of Defence
Photos: The search for MH370
A Royal Australian Air Force AP-3C Orion, on a mission to drop sonar buoys to assist in the search, flies past the Australian vessel Ocean Shield on April 9, 2014.
A relative of a missing passenger cries at a vigil in Beijing on April 8, 2014.
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STRinger/AFP/Getty Images
Photos: The search for MH370
Australian Defense Force divers scan the water for debris in the southern Indian Ocean on April 7, 2014.
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Lt. Ryan Davis/Australian Defense Force/AP
Photos: The search for MH370
A towed pinger locator is readied to be deployed off the deck of the Australian vessel Ocean Shield on April 7, 2014.
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Kelly Hunt/Australian Defense Force/UPI/LANDOV
Photos: The search for MH370
A member of the Royal New Zealand Air Force looks at a flare in the Indian Ocean during search operations on April 4, 2014.
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Nick Perry/Pool/Getty Images
Photos: The search for MH370
On March 30, 2014, a woman in Kuala Lumpur prepares for an event in honor of those aboard Flight 370.
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Rahman Roslan/Getty Images
Photos: The search for MH370
The sole representative for the families of Flight 370 passengers leaves a conference at a Beijing hotel on March 28, 2014, after other relatives left en masse to protest the Malaysian government's response to their questions.
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Ng Han Guan/AP
Photos: The search for MH370
A member of the Royal Australian Air Force is silhouetted against the southern Indian Ocean during the search for the missing jet on March 27, 2014.
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Michael Martina/Pool/Getty Images
Photos: The search for MH370
Flight Lt. Jayson Nichols looks at a map aboard a Royal Australian Air Force aircraft during a search on March 27, 2014.
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Michael Martina/Pool/AP
Photos: The search for MH370
People in Kuala Lumpur light candles during a ceremony held for the missing flight's passengers on March 27, 2014.
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Aaron Favila/AP
Photos: The search for MH370
Malaysian Prime Minister Najib Razak, center, delivers a statement about the flight on March 24, 2014. Razak's announcement came after the airline sent a text message to relatives saying it "deeply regrets that we have to assume beyond any reasonable doubt that MH 370 has been lost and that none of those onboard survived."
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MOHD RASFAN/AFP/Getty Images
Photos: The search for MH370
Grieving relatives of missing passengers leave a hotel in Beijing on March 24, 2014.
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GOH CHAI HIN/AFP/Getty Images
Photos: The search for MH370
A passenger views a weather map in the departures terminal of Kuala Lumpur International Airport on March 22, 2014.
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Rufus Cox/Getty Images
Photos: The search for MH370
A Chinese satellite captured this image, released on March 22, 2014, of a floating object in the Indian Ocean, according to China's State Administration of Science. It was a possible lead in the search for the missing plane. Surveillance planes were looking for two objects spotted by satellite imagery in remote, treacherous waters more than 1,400 miles from the west coast of Australia.
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China's State Admiration of Science
Photos: The search for MH370
Satellite imagery provided by the Australian Maritime Safety Authority on March 20, 2014, showed debris in the southern Indian Ocean that could have been from Flight 370. The announcement by Australian officials raised hopes of a breakthrough in the frustrating search.
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Digital Globe/AMSA/Getty Images
Photos: The search for MH370
Another satellite shot provided by the Australian Maritime Safety Authority shows possible debris from the flight.
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DigitalGlobe/AMSA via Getty Images
Photos: The search for MH370
A distraught relative of a missing passenger breaks down while talking to reporters at Kuala Lumpur International Airport on March 19, 2014.
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AZHAR RAHIM/EPA/LANDOV
Photos: The search for MH370
On March 18, 2014, a relative of a missing passenger tells reporters in Beijing about a hunger strike to protest authorities' handling of information about the missing jet.
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Andy Wong/AP
Photos: The search for MH370
U.S. Navy crew members assist in search-and-rescue operations in the Indian Ocean on March 16, 2014.
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U.S. Navy/Eric A. Pastor/AP
Photos: The search for MH370
Members of the Chinese navy continue search operations on March 13, 2014. After starting in the sea between Malaysia and Vietnam, the plane's last confirmed location, search efforts expanded west into the Indian Ocean.
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XINHUA/LANDOV
Photos: The search for MH370
A Vietnamese military official looks out an aircraft window during search operations March 13, 2014.
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LUONG THAI LINH/EPA/LANDOV
Photos: The search for MH370
Malaysian air force members look for debris near Kuala Lumpur on March 13, 2014.
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Rahman Roslan/Getty Images
Photos: The search for MH370
Relatives of missing passengers wait for the latest news at a hotel in Beijing on March 12, 2014.
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Andy Wong/AP
Photos: The search for MH370
A member of the Vietnamese air force checks a map while searching for the missing plane on March 11, 2014.
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HOANG DINH NAM/AFP/Getty Images
Photos: The search for MH370
A Vietnamese air force plane found traces of oil that authorities had suspected to be from the missing Malaysia Airlines plane, the Vietnamese government online newspaper reported on March 8, 2014. However, a sample from the slick showed it was bunker oil, typically used to power large cargo ships, Malaysia's state news agency, Bernama, reported on March 10, 2014.
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EPA/TIENPHONG.VN
Photos: The search for MH370
A U.S. Navy Seahawk helicopter lands aboard the USS Pinckney to change crews on March 9, 2014, before returning to search for the missing plane in the Gulf of Thailand.
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Chris D. Boardman/U.S. Navy via Getty Images
Photos: The search for MH370
Buddhist monks at Kuala Lumpur International Airport offer a special prayer for the missing passengers on March 9, 2014.
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Lai Seng Sin/AP
Photos: The search for MH370
Members of a Chinese emergency response team board a rescue vessel at the port of Sanya in China's Hainan province on March 9, 2014.
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Zhao Yingquan/Xinhua/Landov
Photos: The search for MH370
The rescue vessel sets out from Sanya in the South China Sea on March 9, 2014.
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Zhao Yingquan/Xinhua/Landov
Photos: The search for MH370
Malaysian Prime Minister Najib Razak, center, arrives to meet family members of missing passengers at the reception center at Kuala Lumpur International Airport on March 8, 2014.
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MANAN VATSYAYANA/AFP/Getty Images
Photos: The search for MH370
A relative of two missing passengers reacts at their home in Kuala Lumpur on March 8, 2014.
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MOHD RASFAN/AFP/Getty Images
Photos: The search for MH370
Chinese police at the Beijing airport stand beside the arrival board showing delayed Flight 370 in red on March 8, 2014.
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MARK RALSTON/AFP/Getty Images
Photos: The search for MH370
Malaysia Airlines Group CEO Ahmad Juahari Yahya, front, speaks during a news conference at a hotel in Sepang on March 8, 2014. "We deeply regret that we have lost all contacts" with the jet, he said.
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Lai Seng Sin/AP
An agonizing wait continues
They’ll have to wait at least a day longer. Gale-force winds, large waves, heavy rain and low clouds forecast for the area “would make any air and sea search activities hazardous and pose a risk to crew,” the Australian Maritime Safety Authority said Tuesday. Teams will resume searching Wednesday if weather permits, officials said.
When they start looking again, they’ll be combing the remote area in the southern Indian Ocean where officials now say they believe the flight ended.
New analysis of satellite data by a British satellite company and accident investigators led to that conclusion, Prime Minister Najib Razak said Monday.
Malaysia Airlines also sent a text message to relatives saying “we have to assume beyond any reasonable doubt that MH370 has been lost and that none of those onboard survived.”
While the last-minute announcement appeared to end hopes of finding survivors more than two weeks after the flight vanished, it left many key questions unanswered, including what went wrong aboard the Beijing-bound airliner and the location of its wreckage in the deep, wild ocean waters.
For families, some of whom had held out hope their relatives somehow were still alive, the news appeared to be devastating.
At a briefing for relatives in Beijing, some were overcome and had to be taken from a hotel on stretchers. In Kuala Lumpur, a woman walked out of a briefing for families in tears.
“My son, my daughter-in-law and granddaughter were all on board. All three family members are gone. I am desperate!” a woman said outside the Beijing briefing.
Another woman came out of the briefing room screaming, expressing doubts about the Malaysian conclusion.
“Where is the proof?” she said. “You haven’t confirmed the suspected objects to tell us no one survived.”
A committee representing some of the families of the 154 Chinese and Taiwanese passengers aboard the missing aircraft sharply criticized the Malaysian government in a statement, accusing authorities of deliberate search delays and cover-ups, China’s state-run CCTV reported.
“If our 154 relatives aboard lost their lives due to such reasons, then Malaysia Airlines, the Malaysian government and the Malaysian military are the real murderers that killed them,” the statement said, according to CCTV.
Malaysian police have interviewed more than 50 people in their investigation into the missing plane, Inspector-General of Police Tan Sri Khalid Abu Bakal told Malaysia’s national news agency Bernama.
Four scenarios of what happened
He said police are focusing on four possibilities about what happened: a potential hijacking, sabotage, psychological issues or personal problems of the passengers and/or crew.
“Such cases may take up to a year,” Khalid said, “so please don’t jump to conclusions that the police are slow.”
While investigators have yet to find even a piece of the plane, the Prime Minister based his announcement on what he described as unprecedented analysis of satellite data by British satellite provider Inmarsat and the British Air Accidents Investigation Branch. He didn’t describe the nature of the analysis.
He said the data, drawn from satellite pings the ill-fated airliner continued to send throughout its final flight, made it clear that the plane’s last position was in the middle of the southern Indian Ocean, “far from any possible landing sites.”
He begged reporters to respect the privacy of relatives.
“For them, the past few weeks have been heartbreaking,” he said. “I know this news must be harder still.”
The airline said it was making plans to fly families to Australia once wreckage is found.
The announcement came the same day as Australian officials said they had spotted two objects in the southern Indian Ocean that could be related to the flight, which has been missing since March 8 with 239 people aboard.
One object is “a gray or green circular object,” and the other is “an orange rectangular object,” the Australian Maritime Safety Authority said.
The Australian naval ship HMAS Success didn’t turn up the objects when it searched Monday night, the authority said.
The objects are the latest in a series of sightings, including “suspicious objects” reported earlier Monday by a Chinese military plane that was searching in the same area, authorities said.
A U.S. surveillance plane sent to follow up was unable to find the objects, and so far, none of the sightings has been definitively linked to Flight 370.
Ten aircraft – from Australia, China, the United States and Japan – searched the area Monday.
China said Monday after the Prime Minister’s announcement that it would be sending more ships to help.
China has a particularly large stake: Its citizens made up about two-thirds of the passengers on the missing Boeing 777.
Amid a vast regional search that at one point spanned nearly 3 million square miles, searchers homed in on the southern Indian Ocean in recent days after satellite images spotted a variety of unknown objects in an area roughly 1,500 miles southwest of Perth, Australia.
Australia reported the first images in the area, followed by China and France.
The area also lies on a projected flight path for the aircraft calculated in part from the satellite pings sent by the plane after other communications systems had shut down.
Australian officials have repeatedly warned that the objects may not be from the missing plane. They could be containers that have fallen off cargo ships, for example.
On Saturday, searchers found a wooden pallet as well as strapping belts, Australian authorities said. Hishammuddin said Monday that wooden pallets were among the items on Flight 370. But such pallets are also common in the ocean shipping industry, so it they may be unrelated to the flight.
The investigation into the passenger jet’s disappearance has already produced a wealth of false leads and speculative theories. Previously, when the hunt was focused on the South China Sea near where the plane dropped off civilian radar, a number of sightings of debris proved to be unrelated to the search.
Monday’s dramatic developments came after a weekend during which other nuggets of information emerged about the movements of the errant jetliner on the night it vanished.
Military radar tracking shows that after making a sharp turn over the South China Sea, the plane changed altitude as it headed toward the Strait of Malacca, an official close to the investigation into the missing flight told CNN.
The plane flew as low as 12,000 feet at some point before it disappeared from radar, according to the official. It had reportedly been flying at a cruising altitude of 35,000 feet when contact was lost with air traffic control.
Also over the weekend, Malaysian authorities said the last transmission from the missing aircraft’s reporting system showed it heading to Beijing – a revelation that appears to undercut the theory that someone reprogrammed the plane’s flight path before the co-pilot signed off with air traffic controllers for the last time.
That reduces, but doesn’t rule out, suspicions about foul play in the cockpit.
Authorities have said pilot Zaharie Ahmad Shah was highly experienced. On Monday, Malaysian authorities said Flight 370 was co-pilot Fariq Abdul Hamid’s sixth flight in a Boeing 777, and the first time when he was not traveling with an instructor pilot shadowing him.
“We do not see any problem with him,” said Malaysia Airlines CEO Ahmad Jauhari Yahya.
Michael Pearson wrote and reported from Atlanta; Mitra Mobasherat reported from Kuala Lumpur; CNN’s Pauline Chiou, David McKenzie and Yuli Yang contributed from Beijing; CNN’s Jim Sciutto, Will Ripley, Sara Sidner, Catherine E. Shoichet, Kevin Wang, Ram Ramgopal, Evan Perez, Kyung Lah and Jaime A. FlorCruz contributed to this report.