New Study Highlights the Role of Atmospheric Rivers in Western Precipitation

news image
Special Stories
13 Aug 2019 10:29 PM
[NOAA]  A new paper published recently in Scientific Reports explains the dominant mechanism for projected intensification of extreme precipitation in California and Western North America as part of the changing precipitation regime of this region. Previous work has shown the decreasing frequency of precipitation in all Mediterranean climate regions as they become more subtropical and the increasing intensity of precipitation (especially in California). In this latest study, lead by Sasha Gershunov, with support from the California-Nevada Applications Program (CNAP) - a NOAA RISA program, the group identifies the dominant mechanism by which heavy precipitation becomes more extreme, atmospheric rivers. The results are not necessarily surprising as other studies have suggested intensification of atmospheric rivers, but the group has now explicitly linked this intensification of atmospheric rivers to changes in finely-resolved precipitation.

This more mechanistic understanding of the intensification of heavy precipitation will help scientists interpret ongoing changes and make plans to manage water resources and flood risk in a progressively more volatile future.

All Weather News
More
Severe Storms Continue to Ride Around Heat Dome

Severe Storms Continue to Ride Around Heat Dome

Several frontal systems will cross the countr

23 Aug 2026 2:30 AM
Atlantic Tropics : Watching Several Areas, Strong Tropical Wave Next Week

Atlantic Tropics : Watching Several Areas, Strong Tropical Wave Next Week

El Niño has been smothering tropical waves in

23 Aug 2026 2:05 AM
Tropical Storm Moke Has Formed in the Pacific; Impacts to Hawaii Start Sunday

Tropical Storm Moke Has Formed in the Pacific; Impacts to Hawaii Start Sunday

TROPICAL STORM MOKEJust days after Hurricane

23 Aug 2026 2:00 AM
Heat, Some Humidity, and Storms for the Southwest the Next Few Days

Heat, Some Humidity, and Storms for the Southwest the Next Few Days

As we get through the work week, high pressur

23 Aug 2026 2:00 AM
Stifling Heat Holds Steady for Southern U.S.

Stifling Heat Holds Steady for Southern U.S.

Record heat rolls on across the Lone Star Sta

23 Aug 2026 1:40 AM
Severe Storms and Heavy Rain Across the East Coast

Severe Storms and Heavy Rain Across the East Coast

A stormy end to the week is taking shape for

21 Aug 2026 10:00 AM
Front That Caused Flooding Heading East

Front That Caused Flooding Heading East

MIDWEST - After a week of flooding rains in t

18 Aug 2026 1:30 AM