With hurricanes and typhoons becoming more intense, we wanted to find out why. What’s going on, and what’s the difference between a hurricane and a typhoon in the first place? What kind of damage do these storms cause? And what role does climate change play?
We answer these questions and more below in our list of most frequently asked questions about hurricanes and typhoons, along with a closer look at how these storms affect the Philippines in particular.
What’s the difference between a hurricane and a typhoon?
Meteorologically speaking, hurricanes and typhoons are largely one in the same phenomenon, but are given different names depending where in the world they occur. Both hurricanes and typhoons are strong tropical cyclones, which are storms that form over warm ocean waters, have a well defined center of circulation, and feed off of heat energy from the ocean.
Once the tropical storm’s sustained winds reach a certain level of intensity (33 meters per second), it becomes a tropical cyclone. If the storm forms or moves through the North Atlantic Ocean or the eastern Pacific Ocean, it’s a hurricane, named after the Mayan god Huracán. If a tropical cyclone forms or moves through the western Pacific Ocean, it’s a typhoon, a name which originates from the Chinese words “tung” or east and “fung” or wind. There’s one other caveat: if the storm forms or moves through the southwestern Pacific Ocean or portions of the Indian Ocean, it’s a cyclone or cyclonic storm.
What are the biggest threats of a hurricane or a typhoon?
It’s no secret that hurricanes and typhoons can cause severe damage to coastal areas and the people who live there. Typically, the stronger the storm, the more danger they pose to anything or anyone in its path.
One of the most dangerous threats caused by hurricanes and typhoons is storm surge, which can send water several feet above the normal tide crashing onto the shore. Typhoon Haiyan, known locally in the Philippines as Super Typhoon Yolanda, and Hurricanes Sandy and Katrina in the US are three examples of where storm surge destroyed many homes, businesses, trees, and power lines, making entire areas uninhabitable for weeks or months and resulting in many lost lives. Another major threat caused by these storms is torrential rainfall, which can cause fresh water flooding in areas farther away from the coast.
Is there a link between climate change and hurricanes and typhoons?
We hear this question often, and the subject continues to be studied closely by climate scientists. Research shows that hurricanes and typhoons are likely to become more intense with stronger winds as the planet, including ocean temperatures, continues to warm. In the northwestern Pacific Ocean specifically, typhoons have become about 10 percent more damaging since the 1970s, and even stronger storms are expected there as climate change worsens.
And then there’s sea-level rise. Rising sea levels in oceans around the world increase the risk for higher storm surge from hurricanes and typhoons and more severe flooding is likely to occur. And as the Earth’s temperature continues to rise, more moisture builds up in the atmosphere, which may lead to heavier downpours and more floods during future storms. In a nutshell, hurricanes and typhoons are expected to become more intense and likely more damaging thanks to climate change.
What were some of the world’s strongest hurricanes or typhoons?
A few major storms stand out. One of the deadliest tropical cyclones in recorded history occurred in the Bay of Bengal, which hit Bangladesh in 1970. That storm, known as the Great Bhola Cyclone, led to between 300,000 and 500,000 causalities.
More recently in October of 2015, Hurricane Patricia became one of the strongest hurricanes on record in the Western Hemisphere as sustained winds reached nearly 200 miles per hour (320 kilometers per hour) off Mexico’s west coast. Thankfully, the storm weakened before it made landfall still as a Category 5 hurricane near Cuixmala, a resort area in the state of Jalisco, later that day.
There’s also Typhoon Haiyan, which is believed to be one of the strongest typhoons on record at the time it made landfall in the Philippines on November 7, 2013. This storm had winds close to 195 miles per hour (315 kilometers per hour) as it approached Guiuan on the Philippine island of Samar.
What makes the Philippines so vulnerable to typhoons?
Put simply, the Philippines’ geography and development puts the nation at greater risk to typhoons. The Philippines is made up of over 7,100 islands and approximately 22,549 miles (36,289 kilometers) of coastline, with over 60 percent of its population estimated to be living in the coastal zone. This proximity to coastal areas for the majority of the population –combined with unsustainable development trends, environmental deterioration, and high levels of poverty – make the island nation that much more vulnerable to typhoons.
Climate change is expected to increase the Philippines’ risk to these dangerous storms. With rising sea levels and the severity of typhoons forecasted to increase thanks to climate change, there’s significantly more risk of threats like storm surges and flooding.
But it isn’t all bad news. Let’s face it: disasters are bound to occur – that’s Mother Nature at work. But it’s our responsibility to take action to prevent these types of storms from getting worse and causing more harm by putting an end to climate change. We have the practical, clean-energy solutions to do it and power our lives without destroying our planet, but we need your help to make policymakers take action.
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