CNN-weather/environment

By Nouran Salahieh and Laura Studley, CNN (CNN) — Phoenix once again hit 110 degrees Monday for a record-tying 18th consecutive day at that temperature or higher as the Southwest sizzles under a deadly, unrelenting heat wave. The record is expected to be broken Tuesday as the streak continues, with temperatures of at least 115

By Jennifer Gray, CNN meteorologist (CNN) — The Atlantic hurricane season is headed into uncharted territory with water temperatures in the Atlantic Ocean and the Gulf of Mexico warmer than they have ever been on record. Seasonal forecasters are warning it means you need to prepare for a more uncertain forecast for the rest of

By Paula Newton, CNN Chibougamau, Quebec (CNN) — By the time the Silver State Hotshot crew arrived from Nevada a few weeks ago, Canada’s wildfires had already scorched millions of acres and shattered all-time burning records. So everyone already knew what they were up against. “In the scope for us, in the states, this would

CNN, CBC NEWS, CTV NETWORK By Paula Newton, CNN Chibougamau, Quebec (CNN) — By the time the Silver State Hotshot crew arrived from Nevada a few weeks ago, Canada’s wildfires had already scorched millions of acres and shattered all-time burning records. So everyone already knew what they were up against. “In the scope for us,

By Nouran Salahieh, Danny Freeman and Holly Yan, CNN (CNN) — Authorities have identified the two children still missing nearly two days after they were swept away by turbulent floodwaters that killed their mother. Matilda “Mattie” Sheils, 2, and her 9-month-old brother, Conrad Sheils, vanished after intense flooding engulfed parts of southeast Pennsylvania on Saturday

By Caitlin Kaiser, CNN (CNN) — Canadian wildfire smoke is bringing unhealthy air across the northern tier of the United States to start the week, triggering air quality alerts for more than a dozen states from Montana to Vermont. Forecasters predicted around 70 million people would see decreased visibility and poor air quality, including residents

By Christina Maxouris, Lauren Mascarenhas, Melissa Alonso and Caitlin Kaiser, CNN (CNN) — Authorities in southeastern Pennsylvania are searching for a 2-year-old girl and her 9-month-old brother who vanished in raging floodwaters as a violent storm slammed the region. The children and their family, who were visiting from Charleston, South Carolina, were driving to a

By Elizabeth Wolfe and Caitlin Kaiser, CNN (CNN) — More than 85 million people remained under heat alerts Saturday as the weekslong heat wave continues and intensifies in the Southwest. Dangerously high temperatures will continue to plague the Western United States throughout the weekend, with temperatures growing hotter in the South early next week. “Daytime

By Emma Tucker, CNN (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 While there’s no official or universal definition for a derecho,

By Brandon Miller, Nick Thompson and Jennifer Gray, CNN (CNN) — El Niño is a climate pattern that originates in the Pacific Ocean along the equator and impacts weather all over the world. Warm water normally is confined to the western Pacific by winds that blow from east to west, pushing it toward Indonesia and

By Eric Zerkel, CNN (CNN) — An already dangerous weekslong heat wave will only worsen this weekend as a heat dome intensifies and reaches peak strength over parts of the Western United States. The heat dome is so formidable the National Weather Service in Phoenix called it “one of the strongest high pressure systems this

By Jennifer Gray, CNN meteorologist (CNN) — Phoenix is supposed to be hot, but the severity of the upcoming heat wave will bring a level of heat that will test even heat-hardy places and do so for longer durations than have ever been observed before. The heat is hitting South Texas, South Florida and the

CNN By Jennifer Gray, CNN meteorologist (CNN) — A dire and potentially catastrophic situation is unfolding across parts of New England and New York, where continuous rounds of heavy rain parked over the region are triggering flash flooding of epic proportions. This system has already proven impressive and deadly. Nearly 8 inches of rain fell

By Jennifer Gray, CNN meteorologist (CNN) — A dire and potentially catastrophic situation is unfolding across parts of New England and New York, where continuous rounds of heavy rain parked over the region are triggering flash flooding of epic proportions. This system has already proven impressive and deadly. Nearly 8 inches of rain fell in

By Jennifer Gray, CNN meteorologist (CNN) — Severe storms and record heat pose serious risks for the Fourth of July holiday, so don’t be surprised if the forecast forces a celebration backup plan. While the record heat might be easing in the South, it’s building elsewhere. And the storm threat isn’t taking a holiday as

By Rachel Ramirez, CNN (CNN) — Summers are getting hotter than ever, shattering all-time high temperature records, straining the energy grid and damaging critical infrastructure. Heat waves also are coming to include another increasingly dangerous element: overnight temperatures that don’t cool down enough to offer sufficient reprieve from oppressive heat, particularly for people without access