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![High flows in a tributary to Lake Mendocino after the February 2019 atmospheric river. Photo: CW3E](/sites/default/files/styles/200px/public/2020-06/river_torrent-cw3e_800x500.jpg?itok=SeGO3GBi)
Atmospheric River Storms Create $1 Billion-a-Year Flood Damage
Researchers calculate damages caused by weather phenomenon in the West over 40-year period
![Seismic gear deployed on rough California hillside.](/sites/default/files/styles/200px/public/2020-05/sopac_800x500.jpg?itok=HkXhjG1e)
UC San Diego at Epicenter of Earthquake Research
Researchers across campus are trying to improve the understanding and detection of earthquakes
![The 2017 Thomas Fire. Photo: istockphoto/Carsten Schertzer](/sites/default/files/styles/200px/public/communications-content/field_crop/350-gershunov-ldeo-fire_0.jpg?itok=P4UIhJbc)
Study Bolsters Case that Climate Change Is Driving Many California Wildfires
Connection seen to fivefold jump in area burned
![](/sites/default/files/styles/200px/public/2020-08/350-kg_oroville_37449_04_07_19_0.png?itok=PPuyGdcB)
Atmospheric Rivers to Become Even More Dominant Source of California Water Resources and Flooding
Research projects that, as other storms decline, atmospheric rivers will strengthen, bringing greater proportion of annual precipitation
![Hand holding sample tube in front of creek](/sites/default/files/styles/200px/public/communications-content/field_crop/hand_vial_870_0.png?itok=WXgCxcq5)
![Atmospheric river hits California. Photo: Jesse Allen, NASA Earth Observatory/ VIIRS satellite.](/sites/default/files/styles/200px/public/communications-content/field_crop/SLIDE-ARScaleImage_0.jpg?itok=Tnc7cVqY)
New Scale to Characterize Strength and Impacts of Atmospheric River Storms
Similar to scales gauging hurricane, wind, or tornado intensity, could aid flood response and water management, especially in the West
![](/sites/default/files/styles/200px/public/communications-content/field_crop/Katowice%20copy_0.jpg?itok=pzAXE3KV)
UC San Diego Scientists Bringing New Science on Geoengineering, Atmospheric Rivers, Plummeting Oxygen in the Oceans to COP24
New results, policy analysis offered by leading-edge researchers in Katowice, Poland
![Portrait of a man with U.S Air Force planes behind him](/sites/default/files/styles/200px/public/2020-11/27DSC_1265UCSanDiegoPublications_ErikJepsen.jpg?itok=50zdAfYA)
A Scientist's Life: Marty Ralph
Meteorologist pioneered study of atmospheric rivers impacting the western U.S.
![CW3E Director Marty Ralph with WC-130J aircraft at San Diego's Brown Field. Photo: Erik Jepsen](/sites/default/files/styles/200px/public/communications-content/field_crop/SLIDE_Ralph_WC-130J_0.jpg?itok=WUupT0wR)
Scripps Institution of Oceanography, Air Force, NOAA Poised to Probe Atmospheric Rivers
Weather reconnaissance flights to be made during peak of storm season
![Chris Ford via Flickr](/sites/default/files/styles/200px/public/2020-06/cliff-erosion-800x500.jpg?itok=Q-rDfwvK)
On the Precipice: Study Identifies California Cliffs at Risk of Collapse
A California Sea Grant-funded study provides the largest analysis of cliff erosion throughout the state and provides a new hazard index for determining which areas are at most risk
![View of an atmospheric river that made landfall in California on Feb. 16, 2017](/sites/default/files/styles/200px/public/communications-content/field_crop/SLIDE-AR_photo_0.jpg?itok=nynZYRSF)
California's Climate Future Suggests More Volatility and a Key Role for Atmospheric Rivers
Management of water resources could become more challenging
![](/sites/default/files/styles/200px/public/communications-content/field_crop/SLIDE-WaterYearRecord-CW3E_0.jpg?itok=Dhvc4Eq5)
Northern California Just Surpassed the Wettest Year on Record
Atmospheric rivers, a key focus of Scripps research center, responsible for record-breaking rain
![Loop of weekend's landfalling atmospheric river that delivered torrential rains and flooding](/sites/default/files/styles/200px/public/communications-content/field_crop/NEPacAnim.gif?itok=0Rw7RbQM)
Where Was the Most Extreme Precipitation in the West Yesterday?
New alert available through Scripps sends updates of major events
![](/sites/default/files/styles/200px/public/2020-08/GOES-AR-map-1-7-17_0.png?itok=oZu2CZdA)
In the News Now: Scripps Scientists Monitoring Massive Atmospheric River
Size of storm aimed at Central California raises flood concerns
![](/sites/default/files/styles/200px/public/2020-08/Ralph-ACWASlide_0.png?itok=iCa5_6HT)
Scripps Scientist Keynotes Meeting of State Water Managers
Extreme weather expert address a nod to increasing value of precipitation forecasts in reservoir operations
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