CNN-Weather/Environment

By Jennifer Gray, CNN Meteorologist Flash flooding is weather’s No. 2 killer, claiming more lives than anything but heat, so it’s important to understand what causes it and how to stay safe. A flash flood can happen anywhere intense rain falls faster than the soil can absorb. And as the name says, it happens in

By Jennifer Gray, Aya Elamroussi, Robert Shackelford, Mallika Kallingal and Taylor Ward, CNN A strong storm system Friday will bring the potential for severe weather to 30 million people from the Lower Mississippi Valley to the lower Ohio Valley. The National Weather Service has issued a tornado emergency — the highest level of tornado warning

By Nouran Salahieh and Christina Maxouris, CNN More than 120,000 California homes and businesses were without power Wednesday morning after another atmospheric river walloped the storm-fatigued state with heavy rain and hurricane-force winds. The unusually strong storm’s ferocious winds downed trees and damaged power lines across California, where at some point Tuesday most of the

By Nouran Salahieh, Rob Shackelford and Holly Yan, CNN Swaths of California still saturated by ruthless storms will get walloped by another atmospheric river, spawning fears of renewed flooding and forcing some residents to flee. The state has already been hammered by at least 11 atmospheric rivers this season. An atmospheric river is like a

By Elizabeth Wolfe and Rob Shackelford, CNN Parts of a nor’easter that buried portions of the Northeast under feet of snow and left hundreds of thousands without power will linger Wednesday over New England, where it is expected to bring limited snow but heavy winds that could cause more outages before shifting off the coast.

By Nouran Salahieh, Joe Sutton and Holly Yan, CNN The storm system that’s hammered California this week is heading east — but not before dousing the state with more torrential rain and knocking out power with ferocious winds. Daily rainfall records were shattered Tuesday in Los Angeles, Santa Barbara and Santa Maria. The deluge will

By Nouran Salahieh, Holly Yan and Joe Sutton, CNN Another atmospheric river is walloping storm-ravaged California, inundating cities already flooded by recent rain and forcing residents to flee — or risk not getting help if they need it. About 30 million people across the state were under flood alerts as the 11th atmospheric river to

By Elizabeth Wolfe, Dakin Andone, Monica Garrett and Christina Maxouris, CNN The season’s first nor’easter has dropped nearly 3 feet of snow over parts of the US Northeast as of Tuesday evening, piling on trees and power lines and causing power outages for tens of thousands in the frigid weather with more snow possible into

By Jennifer Gray, CNN Meteorologist Much of the Northeast and New England so far has experienced an unusually quiet winter season (aside from areas around the Great Lakes). However, it is all changing this week. We are already into meteorological spring as of March 1, which means we did not see a single nor’easter in

By Jennifer Gray and Brandon Miller, CNN Meteorologists A nor’easter is a storm that travels along the US East Coast and typically has coastal winds out of the northeast. “Nor’easters usually develop in the latitudes between Georgia and New Jersey, within 100 miles east or west of the East Coast,” the National Oceanic and Atmospheric

By Aya Elamroussi, CNN Forceful flooding that washed away roads and sent residents across parts of northern and central California fleeing their homes is expected to continue Saturday and through the weekend as more rain arrives. But Saturday is not projected to bring the torrential walls of rain that battered communities Friday, which saw bridges

By Alaa Elassar, Aya Elamroussi, Joe Sutton and Cheri Mossburg, CNN At least two people have died as the result of the ongoing storms inundating California, and nearly 10,000 residents are under evacuation orders, officials said, as intense flooding threatens several coastal counties. The powerful storms have delivered heavy rainfall across the central and northern

By Aya Elamroussi, Taylor Ward, Amy Simonson and Holly Yan, CNN Millions of Californians already hammered by ferocious snowfall were hit Thursday by a new storm, with torrential rain threatening to cause dangerous flooding and the Weather Prediction Center increasing its excessive rainfall outlook for parts of the state to a level 4 of 4.