The Earth's Biggest Super Typhoon

Haiyan's extreme strength was due to ideal atmospheric conditions, including low wind shear and beneficial upper-atmosphere winds that created a suction effect, feeding the storm. The atmospheric pressure in the eye dropped to potentially one of the lowest levels ever observed, rivaling Super Typhoon Tip from 1979. Satellite images showed heavy outflow and a 'dual channel' outflow, further enhancing its growth. The Dvorak method, used to estimate wind speed, recorded Haiyan at its highest possible rating (8.0), indicating winds of 195 mph with gusts up to 240 mph, peaking just as it made landfall.

On the afternoon of November 7th, the Philippine weather service upgraded the warning to signal 4, the highest possible. However, there was little tangible sign of the impending disaster for those on the ground. Haiyan made landfall at 4:40 a.m. on November 8th, unleashing a nightmare. Homes and buildings were destroyed by 200 mph winds, motorbikes and even air conditioning units were seen flying. The relentless winds lasted for hours, shredding homes and leaving families exposed.

In Tacloban, the local hospital was threatened, and staff moved patients to the basement, inadvertently putting them in grave danger from the storm surge. The storm generated a 20-foot storm surge, a phenomenon far deadlier than the winds. Storm surges are created by wind pushing water, displacing it and forming an underwater wave that bulges upward as it approaches shallower coastal areas. Haiyan's intensity drove an unprecedented surge, unlike anything the region had ever experienced.

Tacloban's location within a shallow, protected bay amplified the storm surge, funneling water and causing it to rise further. Critically, Haiyan's 20-foot storm surge arrived in minutes, like a tsunami, unlike the gradual surges seen in other storms like Hurricane Sandy. This rapid arrival was due to rapidly shifting winds: initial offshore winds pushed water away, and then as the eye passed, reversing onshore winds pushed water back into the bay with immense force, leading to instantaneous and deadly flooding. Survivors recount the terrifying speed at which the water rose, turning furniture into floating debris.

Twenty hours after landfall, vast areas of the Philippines were devastated, with at least 6,000 dead, 1,800 missing, and an estimated 4 million homeless. Initial struggles arose from a lack of understanding about storm surges among locals. The Philippine weather service predicted a surge but its rapid onset was unforeseen. Aid was initially challenged by destroyed infrastructure but military forces, specifically 9 ships, 23 helicopters, and 7,000 personnel from the American military, quickly delivered essential supplies like biscuits, rice, water, and medicine. Non-governmental agencies then laid groundwork for longer-term efforts.

Questions arose regarding Haiyan's link to climate change. Scientists agree that while global warming didn't cause Haiyan, it could have exacerbated its intensity. Warmer ocean temperatures provide more energy, potentially leading to more intense storms in the future, even if not necessarily more frequent ones. Rising sea levels, which are not uniform globally, disproportionately affect the Philippines. A higher sea level makes coastal communities far more vulnerable to storm surges, even from less powerful typhoons. This vulnerability is not unique to developing nations, as densely populated areas like Tampa Bay in Florida could face similar catastrophic storm surges.

Haiyan created one of the worst resettlement crises in recent memory, displacing over 4 million people. Survivors faced immense loss, including Carlito Arias, who lost his entire family in the surge. Despite the overwhelming destruction, the Filipino people demonstrated incredible resilience. Many, like Georgina Bulasa and her husband, began rebuilding with salvaged materials, vowing to stay and reconstruct their homes. Medical staff like Paolo Pardea continued to provide care in temporary centers. The national spirit of Filipinos, marked by their refusal to give up and ability to find hope amidst suffering, became a testament to their strength.

Typhoons are explosive storms in the northwestern Pacific, bringing torrential rain, flooding, and screaming winds. Often massive, they are common in the western Pacific. The tropical islands north of Australia, with their warm waters, are fertile breeding grounds for these storms. By late October 2013, 14 typhoons had already formed, and then unlucky number 15, Haiyan, began to develop, destined to become synonymous with devastation.

Eight days before landfall, Haiyan started as a tropical depression near Micronesia, with winds less than 30 mph. The Joint Typhoon Warning Center in Hawaii monitored its growth. Tropical storms form over waters 80 degrees Fahrenheit or warmer; Haiyan benefited from unusually thick, warm water extending to 300 feet deep. On November 4th, it became a typhoon with sustained winds of over 75 mph, doubling in intensity within 24 hours to become a super typhoon with winds exceeding 150 mph, comparable to notorious hurricanes like Katrina, Andrew, and Camille.

The Philippines, an archipelago of over 7,000 islands with a high population density, is highly vulnerable to natural disasters including typhoons, earthquakes, and floods. Millions live in extreme poverty, and while residents are accustomed to typhoons, Haiyan was far stronger than typical. Unaware of the unprecedented intensity, many residents initially took the storm's approach in stride, with preparations being inadequate.