cnn-weather/environment

By Eric Zerkel, Mary Gilbert and Aya Elamroussi, CNN (CNN) — Record-setting rain overwhelmed New York City’s sewer system Friday, sending a surge of floodwater coursing through streets and into basements, schools, subways and vehicles throughout the nation’s most populous city. The water rose fast and furious, catching some commuters off guard as they slogged

By Allison Chinchar and Eric Zerkel, CNN (CNN) — A high-impact flood event is taking shape for the New York City area as a coastal storm moves in overnight and threatens to dump prolific amounts of rain Friday. Millions of people in the New York tri-state area face a Level 3 of 4 “moderate” risk

By Mary Gilbert, CNN Meteorologist (CNN) — Water levels on the Mississippi River are nearing historic lows for the second consecutive year, triggering a drinking water emergency in Louisiana as ocean water flows upstream, unimpeded by the river’s uncharacteristically weak flow. With no substantial rain in the immediate forecast, levels are expected to drop to

By Mary Gilbert, CNN Meteorologist (CNN) — Fall has only just begun, but it’s not too soon to look ahead to winter, especially since this one may look drastically different than recent years because of El Niño. This winter will be the first in a few years to feel the effects of the phenomenon, which

By Nouran Salahieh, CNN (CNN) — Ophelia, now a post-tropical cyclone, continues to weaken as it moves over the mid-Atlantic Sunday, leaving nearly nine million people from Long Island to Southern Maryland under coastal flood alerts. Areas from eastern Pennsylvania to just south of Long Island could see heavy rainfall Sunday, potentially leading to scattered

CNN By Nouran Salahieh, CNN (CNN) — Ophelia, now a post-tropical cyclone, continues to weaken as it moves over the mid-Atlantic Sunday, leaving nearly nine million people from Long Island to Southern Maryland under coastal flood alerts. Areas from eastern Pennsylvania to just south of Long Island could see heavy rainfall Sunday, potentially leading to

By Aya Elamroussi, Melissa Alonso and Artemis Moshtaghian, CNN (CNN) — Ophelia, now a tropical depression, is impacting parts of the mid-Atlantic after its landfall early Saturday near Emerald Isle, North Carolina, slammed the coast with heavy rain, strong winds and flooding. Here are the storm’s latest impacts: Across North Carolina and Virginia, as many

By Elizabeth Wolfe and Eric Zerkel, CNN (CNN) — Tropical Storm Ophelia has strengthened off the East Coast, Hurricane Hunter data shows, as North Carolina and parts of the mid-Atlantic prepare for a soggy and windy weekend ahead of the storm’s anticipated landfall. The storm, packing maximum sustained winds of 70 mph with higher gusts,

By Mary Gilbert, CNN Meteorologist (CNN) — A tropical storm warning has been posted for parts of the North Carolina and mid-Atlantic coasts for a developing storm that will bring gusty winds, heavy rain, dangerous rip currents and coastal flooding to areas from Florida to New England as it tracks north near the coast into

By Mary Gilbert, CNN Meteorologist (CNN) — A storm set to form off the Southeast coast late this week will bring gusty winds, heavy rain and hazardous seas from Florida to New England as it tracks northward into the weekend. An area of low pressure is likely to develop off the east coast of Florida

By Nouran Salahieh, CNN (CNN) — The remnants of post-tropical cyclone Lee were moving out over the ocean and away from Atlantic Canada on Monday, after US officials announced at least two deaths due to the storm. Lee, once a powerful hurricane, churned northward with maximum sustained winds of 45 mph on Sunday after making

By Aya Elamroussi, CNN (CNN) — Now a post-tropical cyclone, Lee made landfall on the far western tip of Nova Scotia on Saturday afternoon as it churned 65 mph sustained winds to parts of southeastern New England and Atlantic Canada, according to the National Hurricane Center. The storm made landfall on Long Island in Nova

CNN By Nouran Salahieh, CNN (CNN) — Post-tropical cyclone Lee continues to bring heavy rain, wind and coastal flooding to parts of Canada’s Atlantic provinces on Sunday, knocking out power to tens of thousands, lashing the coasts with big waves and spurring calls to stay indoors. Lee, once a powerful hurricane, is churning maximum sustained

By Mary Gilbert, Holly Yan and Aya Elamroussi, CNN (CNN) — Hurricane Lee, an enormous Category 1 storm whipping strong winds across hundreds of miles, is inching closer to New England and expected to impact the region Friday evening into Saturday. Lee is so huge that its tropical-storm-force winds (between 39 and 74 mph) extend

CNN Editorial Research (CNN) — Here’s a look at earthquakes worldwide. The US Geological Survey describes an earthquake as “the ground shaking caused by a sudden slip on a fault. Stresses in the earth’s outer layer push the sides of the fault together. Stress builds up and the rocks slip suddenly, releasing energy in waves