Natural disasters

The extreme flooding and mudslides across California in recent weeks took many drivers by surprise. Sinkholes swallowed cars, highways became fast-moving rivers of water, entire neighborhoods were evacuated. At least 20 people died in the storms, several of them after becoming trapped in cars in rushing water. As I checked the forecasts on my cellphone weather apps during the weeks of storms in early January 2023, I wondered whether people in the midst of the downpours were using similar technology as they decided whether to leave their homes and determined which routes were safest. Did they feel that it was sufficient? I am a hydrologist who sometimes works in remote areas, so interpreting weather data and forecast uncertainty is always part of my planning. As someone who once nearly drowned while crossing a flooded river where I shouldn’t have, I am also acutely conscious of the extreme human vulnerability stemming from not knowing exactly where and when a flood will st...

U.S. weather disasters are getting costlier as more people move into vulnerable areas and climate change raises the risks of extreme heat and rainfall, National Oceanic and Atmospheric Administration officials warned as they released their annual billion-dollar disasters report on Jan. 10, 2023. Even with an average hurricane season, 2022 had the third-highest number of billion-dollar disasters in the U.S. since 1980. In all, there were 18 disasters that each caused more than US$1 billion in damage in the U.S. The list included three hurricanes, two tornado outbreaks, a destructive fire season, several extreme storms and a drought that disrupted sectors across the economy. 2022 had 18 disasters that exceeded $1 billion each in damage. NCEI/NOAA It was also the third-costliest year, with past years adjusted for inflation, due primarily to Hurricane Ian’s widespread damage in Florida. Together,...

The year 2022 will be remembered across the U.S. for its devastating flooding and storms – and also for its extreme heat waves and droughts. The nation saw 18 disasters that caused more than US$1 billion in damage each, well above the average. The year started and ended with widespread severe winter storms from Texas to Maine, affecting tens of million of people and causing significant damages. Then, March set the record for the most reported tornadoes in the month – 233. During a period of five weeks over the summer, five 1,000-year rainfall events occurred in St. Louis, eastern Kentucky, southern Illinois, California’s Death Valley and Dallas, causing devastating and sometimes deadly flash floods. Severe flooding in Mississippi knocked out Jackson’s troubled water supply for weeks. A historic flood in Montana, brought on by heavy rain and melting snow, forced large areas of Yellowstone National Park to be evacuated. In the fall, hurricanes Ian and Fio...

This article is part of a collaboration with Boulder Reporting Lab, The Center for Environmental Journalism at the University of Colorado Boulder, KUNC public radio and The Conversation U.S. to explore the impacts of the devastating Marshall Fire one year after the blaze. The series can be found at the Boulder Reporting Lab. On Dec. 30, 2021, one of the most destructive wildfires on record in Colorado swept through neighborhoods just a few miles from our offices at the University of Colorado Boulder. The flames destroyed over 1,000 buildings, yet when we drove through the affected neighborhoods, some houses were still completely intact right next to homes where nothing was left to burn. Although the people who lived in these still-standing homes were spared the loss of everything they owned, when they returned after the fire, they found another disaster. Noxious smells and ash on their windowsills and doorways initially made their homes unlivable – and potentially hazardo...

Rivers of muddy water from heavy rainfall raced through city streets as thousands of people evacuated homes downhill from California’s wildfire burn scars amid atmospheric river storms drenching the state in early January 2023. The evacuations at one point included all of Montecito, home to around 8,000 people – and the site of the state’s deadliest mudslide on record exactly five years earlier. Wildfire burn scars are particularly risky because wildfires strip away vegetation and make the soil hydrophobic – meaning it is less able to absorb water. A downpour on these vulnerable landscapes can quickly erode the ground, and fast-moving water can carry the debris, rocks and mud with it. After the 2018 mudslide in Montecito, firefighters checked homes. Twenty-three people died in the disaster. Wally Skalij/Los Angeles Times via Getty Images With more storms expected through mid...