CNN-Weather/Environment

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 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

By Jennifer Gray, CNN meteorologist This year might be another strike in the “loss column” for Punxsutawney Phil, which isn’t much of a surprise, since he’s wrong about 60% of the time. He forecast six more weeks of winter, yet it seems spring is already in full bloom across parts of the country where blooms

By Hannah Sarisohn, CNN An annual ice fishing tournament on Vermont’s Lake Champlain has been canceled after the deaths of three fisherman on the lake since Thursday, an organizer of the tournament told CNN Sunday. Wayne Alexander from Grand Isle, Vermont, died Thursday after falling through the ice, according to a release from Vermont State