Climate-related disasters

Wildfires destroyed the Hawaiian tourist town of Lahaina on Aug. 8 and 9, 2023, leaving many of its roughly 13,000 residents homeless. Fires also burned in other areas on Maui, Hawaii’s second-largest island, and its Big Island. President Joe Biden issued a disaster declaration on Aug. 10, which authorizes federal aid for communities in harm’s way. The Conversation asked Ivis García, an urban planner who has researched disaster recovery efforts in Puerto Rico, to explain how the U.S. government responds to disasters like these and how Maui’s geography could interfere with aid delivery. Is it harder for aid to reach an island than the US mainland? The Federal Emergency Management Agency, which delivers emergency assistance after disasters, has to deal with big transportation challenges in cases like this. Initially, FEMA will be focused on bringing food, generators, cots, meals and anything else people need, and that aid will be arriving on planes and boat...

Hurricane Helene caused deadly and destructive flooding when it swept through the Southeast on Sept. 26-29, 2024. Across a broad swath of western North Carolina, where the worst flooding occurred, the amount of rainfall exceeded levels that would be expected on average only once every 1,000 years. But this wasn’t the first 1,000-year rainstorm in North Carolina this year. In mid-September, an unnamed slow-moving storm produced more than a foot of rainfall closer to the Atlantic coast. This storm inundated areas that had already been drenched by Tropical Storm Debby in August. As atmospheric scientists and state climatologists, we believe it’s important for the public to understand the risk that extreme events may occur. That’s especially true as climate change alters the conditions that create and feed storms. Here’s how scientists calculate storm probabilities, and why events like a 1,000-year storm can happen much more frequently in some places than tha...

You may be hearing the phrase “loss and damage” in the coming weeks as government leaders meet in Egypt for the 2022 U.N. Climate Change Conference. It refers to the costs, both economic and physical, that developing countries are facing from climate change impacts. Many of the world’s most climate-vulnerable countries have done little to cause climate change, yet they are experiencing extreme heat waves, floods and other climate-related disasters. They want wealthier nations – historically the biggest sources of greenhouse gas emissions – to pay for the harm. A powerful example is Pakistan, where extreme rainfall on the heels of a glacier-melting heat wave flooded nearly one-third of the country in the summer of 2022. The flooding turned Pakistan’s farm fields into miles-wide lakes that stranded communities for weeks. More than 1,700 people died, millions lost their homes and livelihoods, and more than 4 million acres of crops and orchards,...

The powerful remnants of Typhoon Merbok pounded Alaska’s western coast on Sept. 17, 2022, pushing homes off their foundations and tearing apart protective berms as water flooded communities. Storms aren’t unusual here, but Merbok built up over unusually warm water. Its waves reached 50 feet over the Bering Sea, and its storm surge sent water levels into communities at near record highs along with near hurricane-force winds. Merbok also hit during the fall subsistence harvest season, when the region’s Indigenous communities are stocking up food for the winter. Rick Thoman, a climate scientist at the University of Alaska Fairbanks, explained why the storm was unusual and the impact it’s having on coastal Alaskans. What stands out the most about this storm? It isn’t unusual for typhoons to affect some portion of Alaska, typically in the fall, but Merbok was different. It formed in a part of the Pacific, far east of Japan, where historically few ty...