CNN-weather/environment

By Nouran Salahieh and Joe Sutton, CNN Communities on the West Coast and in the Northeast are dealing with heavy snowfall, strong winds, power outages and dangerous road conditions from a series of storms lashing opposite sides of the US. About 23 million people are under winter weather alerts across the country Tuesday. Some alerts

By Emma Tucker, CNN A derecho is a significant, potentially destructive weather event that is characterized as having widespread, long-lived, straight-line winds associated with a fast-moving group of severe thunderstorms. Here’s what you need to know about derechos: They can produce hurricane-force winds A derecho is classified by a swath of wind damage extending more

By Elizabeth Wolfe, Rob Shackelford, Joe Sutton and Claire Colbert, CNN As severe storms prompted at least nine tornado reports in parts of the central US, a barrage of snow, rain and harsh wind was forecast Monday in places from the West Coast to the Great Lakes, including some still without power following a similar

By Haley Brink and Eric Levenson, CNN A winter storm dumped massive amounts of precipitation across southern California this weekend, including more than 6.5 feet of snow to Mountain High and more than 5 inches of rain to Cucamonga Canyon. The hefty snowfall totals included 5 feet to Snow Valley, 57 inches to Bear Mountain

By Haley Brink, CNN Meteorologist The storm system that brought blizzard warnings to Southern California on Friday and Saturday will produce a significant damaging wind event across the central US on Sunday. By midday Sunday the Storm Prediction Center was forecasting a derecho to develop Sunday afternoon and evening. A derecho is a widespread, long-lived,

By Aya Elamroussi, CNN A rare blizzard warning remains in effect for parts of Southern California — including the Los Angeles region — Saturday as some areas endure heavy snow and record rainfall that has delivered dangerous flooding. An onset of severe weather across the West Coast has spawned unfamiliar wintry conditions at higher elevations,

By Aya Elamroussi, Rob Shackelford, Ralph Ellis and Mallika Kallingal, CNN A slow-moving winter storm has struck the West Coast, flooding highways in Los Angeles and prompting rare blizzard warnings in Southern California. In its first-ever blizzard warning, the National Weather Service in San Diego said the San Bernardino County mountains could see 3 to

By Elizabeth Wolfe, Rob Shackelford and Joe Sutton, CNN Brutal winter storms brought significant icing, strong wind gusts and heavy snow across strips of the US from California to the Northeast on Thursday, part of a multiday event that has already closed roads and caused numerous power outages — even as the Southeast basks in

By Aya Elamroussi, Eric Levenson and Taylor Ward, CNN A powerful winter storm set record low temperatures in the northern Plains of the US, while a heat wave in the Southeast set record highs for the month of February — leaving the country with an unusually stark temperature difference of more than 100 degrees. Much

CNN Editorial Research Here’s a look at the earthquake and tsunami that struck Japan in March of 2011. March 11, 2011 – At 2:46 p.m., a 9.1 magnitude earthquake takes place 231 miles northeast of Tokyo at a depth of 15.2 miles. The earthquake causes a tsunami with 30-foot waves that damage several nuclear reactors

By Aya Elamroussi and Rob Shackelford, CNN Severe storms, including possible strong tornadoes, will sweep across parts of the South and central US Thursday, putting millions of people at risk of damaging winds and large hail. Overall, nearly 50 million people across a large swath of the country could see a range of severe weather