The University of Arizona

La Nina Winter Vs. Cumulative Precipitation Deficits | CLIMAS

 SW Climate Outlook

La Nina Winter Vs. Cumulative Precipitation Deficits

La Nina Winter Vs. Cumulative Precipitation Deficits

While the precipitation and temperature patterns in the U.S. Southwest were consistent with a typical La Niña (Figs 2A-C), these winter conditions amplified the existing deficits resulting from the widespread well-below average monsoon in 2020 (Figs 1A-C).


Online Resources

  • Figures 1A,1C, 2A, 2C - West Wide Drought Tracker - wrcc.dri.edu/wwdt
  • Figures 1B,2B - CLIMAS: Climate Assessment for the Southwest - climas.arizona.edu - data: RCC-ACIS


For a detailed look at regional precipitation tracking, check out Mike Crimmin’s Climate Station Summaries
cals.arizona.edu/climate/misc/stations/index.html