What is an atmospheric river? With California under flood alerts, a hydrologist explains the good and bad of these storms and how they’re changing
- Written by Qian Cao, Hydrologist, Center for Western Weather and Water Extremes, University of California, San Diego
A satellite image shows a powerful atmospheric river hitting the U.S. West Coast on Jan. 31, 2024.NOAA GOESForecasters warned of dangerous flooding, heavy mountain snow and a heightened risk of mudslides and avalanches Feb. 4-6, 2024, as a powerful atmospheric river took aim at California. It’s the latest in a series of atmospheric rivers to...

