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(CNN) -- With 25 million people in its path, Super Typhoon Haiyan -- one of the strongest storms recorded on the planet -- smashed into the Philippines on Friday morning.
As the storm plowed across the cluster of islands in the heart of the country, casualties were reported, more than 100,000 people took shelter in evacuation centers and hundreds of flights were canceled.
The storm brought tremendously powerful winds roaring ashore as it made landfall in the province of Eastern Visayas, disrupting communications with a major city in its path.
With sustained winds of 315 kph (195 mph) and gusts as strong as 380 kph (235 mph), Haiyan was probably the strongest tropical cyclone to hit land anywhere in the world in recorded history. It will take further analysis after the storm passes to establish whether it is a record.
As the monster storm spun toward the Philippines on Thursday, President Benigno S. Aquino III warned the nation that it faced a "calamity."
Category 5 strength
Haiyan, known in the Philippines as Yolanda, appeared to retain much of its terrifying force as it moved west over the country, with sustained winds of 295 kph, gusts as strong as 360 kph. Haiyan's wind strength makes it equivalent to a Category 5 hurricane.
Video footage from on the ground in the Philippines showed howling winds bending palm trees and whipping debris down deserted streets.
Gov. Roger Mercado of Southern Leyte, a province in Eastern Visayas, said Friday morning that "all roads" were impassable because of fallen trees.
He said it was too soon to gauge the level of devastation caused by Haiyan.
"We don't know the extent of the damage," Mercaod said. "We are trying to estimate this. We are prepared, but this is really a wallop."
The typhoon was forecast to churn across the central Philippines during Friday and part of Saturday before exiting into the South China Sea.
The storm is expected to weaken slightly as it moves across land, but forecasters predict that it will maintain super typhoon intensity throughout its passage over the islands.
A super typhoon has surface winds that sustain speeds of more than 240 kph for at least a minute, according to the U.S. National Oceanic and Atmospheric Administration.
Haiyan is so large in diameter that clouds from it are affecting two-thirds of the country, which stretches more than 1,850 kilometers (1,150 miles). Tropical-storm-force winds are extending 240 kilometers from the typhoon's center.
Super Typhoon Haiyan's predicted track
Super Typhoon Haiyan's predicted track
A man reconstructs his house in the bay of Tacloban, Leyte province, Philippines, on Wednesday, November 27, 2013. Typhoon Haiyan, one of the most powerful storms on record, hit the country's eastern seaboard on November 8, leaving a wide swath of destruction, including more than 5,000 deaths.
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'Very real danger'
The National Disaster Risk Reduction and Management Council said Friday that one person had been confirmed dead as a result of the storm in the eastern province of Surigao del Sur.
Authorities in Cebu said they were unable to establish whether a woman who was hit by a falling coconut tree in the north of the province was dead or injured. Neil Sanchez, a provincial disaster management official, said authorities had lost contact with the town where the incident happened.
On Thursday morning, a day before the storm arrived, a 1-year-old child and another person died after they were hit by debris from a tornado in the southern province of Cotabato, authorities said. It was unclear whether the tornado was related to the approaching typhoon.
Ahead of the typhoon's arrival, thousands of people had been relocated away from particularly vulnerable areas in Tacloban City, which is situated in a coastal area of the region that bore the initial brunt of the storm.
Communications with Tacloban, which has a population of around 200,000, were disrupted after the typhoon struck.
Video aired by CNN affiliate ABS-CBN showed streets in the city flooded with water and debris.
In a speech Thursday, Aquino warned residents of the "calamity our countrymen will face in these coming days."
"Let me repeat myself: This is a very real danger, and we can mitigate and lessen its effects if we use the information available to prepare," he said.
Authorities have aircraft ready to respond, and officials have placed relief supplies in the areas that are expected to get hit, Aquino said.
"The effects of this storm can be eased through solidarity," he said.
Earthquake survivors vulnerable
Authorities have warned dozens of provinces across the country to be prepared for possible flash floods and landslides. About 125,000 people nationwide were moved to evacuation centers
Some of the most vulnerable people are those living in temporary shelters on the central Philippine island of Bohol.
Last month, a 7.1-magnitude earthquake hit the island, which lies close to the typhoon's predicted path. The quake killed at least 222 people, injured nearly 1,000 and displaced about 350,000, according to authorities.
"This has been a quake hit area, for the past three weeks people are still experiencing aftershocks," said Aaron Aspi, a communications specialist in Bohol for the charity World Vision. "and at the same time these rains are giving them a really hard time."
"Most of them are advised to evacuate to sturdy structures," he said. "But there are a few thousand displaced families in quake hit areas that are still staying in makeshift tents and now that the super typhoon is here it is really heart breaking to see them struggling."
Aspi said many peoples' tents are drenched but they still too afraid to relocate to enclosed structures because of the aftershocks.
Beach resort threatened
Another island in the storm's likely trajectory is the popular beach resort of Boracay. Some tourists there were cutting their vacations short to get away from the possible danger.
Ross Evans, an aviation professional from Florida, said there was "a definite urgency and panic" among the long lines of holidaymakers waiting for boats to get off Boracay on Thursday.
Speaking by phone before his flight to Manila took off, he said he felt "horrible" for those who may end up stuck in the storm's path.
Evans said he and his travel companions, who are leaving the Philippines two days earlier than planned, "feel very fortunate to have the ability to make arrangements to be safe."
Situated near an area of the Pacific Ocean where tropical cyclones form, the Philippines regularly suffers severe storm damage.
An average of 20 typhoons hit the archipelagic nation every year, and several of those cause serious damage.
In December, Typhoon Bopha wreaked widespread devastation on the southern Philippine island of Mindanao. The storm, the most powerful to hit the country that year, is estimated to have killed as many as 1,900 people.
CNN's Aliza Kassim, Karen Smith, Elwyn Lopez, Judy Kwon, Taylor Ward, Brandon Miller, Ivan Cabrera and Mari Ramos contributed to this report.
A man rests on his damaged house along the shore in Tacloban on Monday, November 25.
Road traffic moves past destroyed houses in Palo, Leyte province, on Sunday, November 24, weeks after typhoon Haiyan caused heavy damage to life and property in the Philippines.
A woman rests inside the damaged Our Lady of Guadalupe shrine in Tacloban, Philippines, on Sunday, November 24.
A woman looks over the devastated waterfront in Tacloban on November 24.
Typhoon survivors walk down a road in Palo, Philppines, during a procession for typhoon victims on November 24.
A vehicle lies in the water in Tacloban on Saturday, November 23.
A man searches through the debris in Tacloban on November 23.
A man scavenges piles of wood amid damaged container vessels on November 23 in Tacloban.
Local people begin to help clear debris near the shoreline where several tankers ran aground on November 23 in Leyte. The death toll from the storm stands at more than 5,000, according to a government-run news agency.
A man clears debris from in front of his home near the shoreline on November 23 in Leyte.
Groups of men clear debris near the shoreline on November 23 in Tacloban.
Survivors of Typhoon Haiyan inspect the damage to their houses in Tacloban, Philippines, on Friday, November 22.
Filpinos clear rubble from a hard-hit area in Tacloban on November 22.
An airplane lands in Tacloban as Antonio Lacasa rebuilds his house on Thursday, November 21.
People carry a coffin through an opening in the wall of a public cemetery for burial in Tacloban on November 21.
A member of the Philippine air force drops relief goods for survivors in Tolosa on November 21.
Children blow bubbles in a destroyed market in Tacloban on Wednesday, November 20.
Workers clear mud and debris in Tacloban on November 20.
A boy climbs across debris in Tacloban on November 20.
People at the airport in Tacloban react to a blast of wind from an aircraft on November 20.
A man walks through water in the typhoon-ravaged city of Tacloban, Philippines, on November 20.
A man sleeps on Tuesday, November 19, on a tanker that ran aground during Typhoon Haiyan in Tacloban.
Firemen unload bodies November 19 for forensic experts to register and bury in a mass grave outside of Tacloban.
Firemen unload more victims outside of Tacloban on November 19.
A man fans the flames of a fire in Tanauan, Philippines, on November 19.
Survivors salvage wood next to stranded ships in Tacloban on November 19.
Philippine military personnel carry an injured survivor to an evacuation flight at the Tacloban airport November 19.
People in Tacloban march in the rain November 19 during a procession calling for courage and resilience among survivors.
People play cards by candlelight Monday, November 18, in Tacloban.
A U.S. Navy helicopter delivers relief goods to typhoon victims in Ormoc, Philippines, on November 18.
Men take food back to their families in Leyte on November 18. Countries all over the world have pledged relief aid to those affected by the typhoon, but damage to airports and roads have made moving the aid very difficult.
People are held back as the U.S. Navy delivers aid from a helicopter in San Jose, Philippines, on November 18.
A helicopter flies over a call for help in Ormoc on November 18.
A man cleans up mud inside a church in the hard-hit city of Tacloban on November 18.
A boy bathes November 18 at a Tacloban school turned into a temporary shelter.
Hundreds of typhoon survivors are packed into a U.S. military airplane November 18 for evacuation from Tacloban's airport.
Typhoon survivors run toward a passing U.S. Navy helicopter in San Jose on November 18.
A boy holding a toy machine gun sits Sunday, November 17, on a ship that ran aground in Tacloban.
People gather around a helicopter as it delivers relief supplies November 17 in Guiuan, Philippines.
Filipinos board an HC-130 Hercules airplane as U.S. sailors carry relief supplies November 17 in Guiuan.
Survivors clean mannequins found among the debris in Tacloban on November 17.
A man leans against a statue of the Crucifixion before a Mass at Santo Nino Church in Tacloban on November 17.
A man carries a piece of wood from the debris in Tacloban on November 17.
Survivors wait in line in Tacloban for relief goods on November 17.
A man looks over the devastation from his damaged home in Tacloban on November 17.
A trapped resident braves the dust created by a U.S. Navy helicopter taking off Saturday, November 16, on Manicani Island, Philippines.
Corpses are collected and loaded on trucks to be taken to mass graves in Tacloban on November 16.
A victim's corpse floats on a river in Tanauan on November 16.
A pregnant survivor waits to give birth in a hospital November 16 in Tanauan.
A dead dog lies in front of a house destroyed by the typhoon in Tanauan.
A man carries a bicycle as he walks through the ruins of a Tacloban building November 16.
Survivors of the typhoon stand in a Tanauan street partially blocked by debris November 16.
An elderly survivor walks past toppled cars outside a church in Tacloban on November 16.
A man in Tanauan cleans meat after slaughtering his only cow that survived the typhoon.
Survivors gather in Tacloban to await transport to a neighboring province on November 16.
Men carry a coffin toward a Leyte cemetery on November 16.
A survivor cooks dinner in front of his damaged home in Marabut, Philippines, on Friday, November 15.
Toppled coconut trees dot a mountain in an area devastated by the typhoon in Leyte province.
A typhoon survivor keeps her husband alive by manually pumping air into his lungs after his leg was amputated at a Tacloban hospital November 15. The hospital has been operating without power since the typhoon.
A survivor reacts to the damage at a residential area in Tacloban on November 15.
Typhoon victims are treated in the lobby of a Tacloban hospital on November 15.
Philippine Army soldiers carry the body of a civilian in Tanauan on November 15.
Residents wait to board a Singaporean cargo plane at the Tacloban airport on November 15. Many survivors have converged on the city's airport to wait for flights.
Search and retrieval teams carry a body bag in Tacloban on November 15.
Haiyan survivors carry food that a U.S. military helicopter dropped off in Guiuan on Thursday, November 14.
Dozens of bodies are placed near Tacloban City Hall on November 14 as workers prepare a mass grave on the outskirts of the hard-hit city.
A girl plays inside her house amid the devastation in Tacloban on November 14.
A Filipino soldier hands out bread to survivors in Maraboth, Philippines, on November 14.
A boy takes cover from rain while waiting for an evacuation flight from Tacloban's airport November 14.
Workers arrange bodies at a mass burial site at a Tacloban cemetery November 14.
The weary wait for evacuation from Tacloban on November 14.
A truck lies in the water in Hernani, Philippines, on November 14.
Children play with fallen power lines near a damaged school in Guiuan on November 14.
Teresa Mazeda hangs laundry in the ruins of her Tacloban home on Wednesday, November 13.
Nina Duran searches for belongings at her family's destroyed house in Tacloban on November 13.
Survivors walk through the ruins of their neighborhood outside Tacloban on November 13.
A man sits in front of his destroyed business November 13 in Tacloban.
A family, desperate to charge their mobile phones to search for family and friends, tries to use a ceiling fan to generate electricity November 13 in the Philippine province of Cebu.
An injured man in Tacloban rests beneath a picture of Jesus Christ on November 13.
A man takes a shower amid the rubble in Tacloban on November 13.
A rescue team wades into Tacloban floodwater to retrieve a body on November 13.
Residents take shelter in a Tacloban church on November 13.
Residents make their way through a destroyed neighborhood in Tacloban on November 13.
A boy cycles past a coffin left on a street in Tacloban on November 13.
A man looks at his destroyed home November 13 in Tacloban.
Body bags are lined up in Tacloban on November 13.
Survivors prepare to board a military plane November 13 at the Tacloban airport.
Men walk through smoke as they burn debris from a Tacloban church on November 16.
An aerial view of Tanuan shows signs pleading for help and food November 13.
Soldiers help a woman after she collapsed November 13 while waiting in line to board a military plane at Tacloban's airport.
Survivors wait to be evacuated from Tacloban on November 13.
An injured survivor gets carried on a stretcher before being airlifted from Tacloban's airport November 13.
A survivor begins to rebuild his house in Tacloban on November 13.
Evacuees wait to board a military aircraft in Leyte on Tuesday, November 12.
People walk through damage in Tacloban on November 12.
A young man waits at the airport November 12 in hopes of being evacuated from Tacloban.
A woman comforts a crying relative as a plane leaves the Tacloban airport November 12.
A man sits crying on a packed aircraft in Tacloban on November 12.
Debris lays scattered around a damaged home near the Tacloban airport on November 12.
A girl sits inside a bus as she waits for a ferry in Matnog, Philippines, on November 12.
Police line up bodies for processing in Tacloban on November 12.
People in Tacloban pass debris on November 11.
Survivors in Tacloban board a military plane bound for the Philippine capital of Manila on November 11.
Residents carry bags of rice from a Tacloban warehouse that they stormed November 11 because of a food shortage.
A woman in Tacloban walks amid the debris of destroyed houses on November 11.
People make their way across a flooded street in Shangsi, China, on November 11. Haiyan moved toward Vietnam and south China after devastating the Philippines.
Buildings lie in ruins on Eastern Samar's Victory Island.
Emily Ortega rests on November 11 after giving birth to Bea Joy at an improvised clinic at the Tacloban airport.
U.S. Marine Corps Osprey aircraft arrive at Manila's Villamor Airbase to deliver humanitarian aid on November 11.
People ride past destruction in Tacloban on Sunday, November 10.
A body lies amid the Tacloban devastation on November 10.
People cover their noses to block the smell of bodies in Tacloban on November 10.
Bodies of victims lie along a Tacloban road on November 10.
A large boat sits aground, surrounded by debris in Tacloban on November 10.
People walk past the Tacloban devastation on November 10.
People stand under a shelter in Tacloban.
A girl peeks out from a makeshift shelter in Tacloban.
Typhoon survivors wait to receive relief goods at the Tacloban airport on November 10.
A woman mourns in front of her husband's dead body November 10 in Tacloban.
Fallen trees litter the ground at the Tacloban airport on Saturday, November 9.
A resident passes victims' bodies on a Tacloban street November 9.
People in Tacloban carry a victim of the typhoon November 9.
A vehicle lies amid Tacloban debris on November 9.
People walk past a victim left on the side of a road in Tacloban.
A resident passes an overturned car in Tacloban on November 9.
Rescue workers carry a woman about to give birth November 9 at a makeshift medical center at the Tacloban airport.
An airport lies in ruins in Tacloban.
Astronaut Karen L. Nyberg took a picture of the typhoon from the International Space Station on November 9.
Women walk past fallen trees and destroyed houses in Tacloban on November 9. Residents scoured supermarkets for water and food as they slowly emerged on streets littered with debris.
A soldier pulls a cable inside the devastated airport tower in Tacloban.
Tacloban houses are destroyed by the strong winds caused by the typhoon.
Dark clouds brought by Haiyan loom over Manila skyscrapers on November 8.
A woman carries a baby across a river November 8 at a coastal village in Las Pinas, Philippines.
A resident walks along a fishing village in Bacoor, Philippines, on November 8.
A house in Legazpi, Philippines, is engulfed by storm surge November 8.
A child wraps himself in a blanket inside a makeshift house along a Bacoor fishing village.
A woman and her children head for an evacuation center November 8 amid strong winds in Cebu City, Philippines.
Huge waves from Haiyan hit the shoreline in Legazpi on November 8.
A fisherman lifts a post to reinforce his home at a coastal village in Las Pinas on November 8.
A resident unloads nets off a fishing boat in Bacoor on November 8.
Residents reinforce their homes in Las Pinas on November 8.
The storm approaches the Philippines in this satellite image taken Thursday, November 7, by the National Oceanic and Atmospheric Administration.
Workers bring down a billboard in Makati, Philippines, on November 7 before Haiyan makes landfall.
Philippine Coast Guard personnel stand in formation beside newly acquired rubber boats after a blessing ceremony in Manila on Wednesday, November 6. The boats were to be deployed to the central Philippines in preparation for Haiyan.
