Storm Summaries

The following studies detail the significant precipitation events that have occurred across southwest Oregon, California, and Nevada. These storm summaries have been compiled since events during the 2004-2005 winter season. Also, the two historic and memorable flooding events from February 1986 and January 1997 have now been added to this collection of documents.

2022 - 2023 Winter Season

Section 1: Late December 2022 - January 2023

Location / Event: California and Nevada Heavy Precipitation Events

Section 2: Late February 2023 - March 2023

Location / Event: California and Nevada Heavy Precipitation Events

2021 - 2022 Winter Season

October 17, 2021 - October 26, 2021

Location / Event: California and Northern Nevada Heavy Precipitation Event

2016 - 2017 Winter Season

January and February 2017

Location / Event: California and Northern Nevada Series of Significant Precipitation Events

2012 - 2013 Winter Season

November 28, 2012 - December 03, 2012

Location / Event: Northern CA and Western NV Heavy Precipitation Event

2010 - 2011 Winter Season

October 23, 2010 - October 25, 2010

Location / Event: Northern/Central CA and Northern NV Early-Season Heavy Precipitation Event

December 16, 2010 - December 23, 2010

Location / Event: California and Nevada

2009 - 2010 Winter Season

October 13, 2009 - October 14, 2009

Location / Event: Northern/Central CA and Western NV Early-Season Heavy Precipitation Event

2005 - 2006 Winter Season

December 24, 2005 - January 03, 2006

Location / Event: Southwest OR, Northern CA, and Western NV Significant Precipitation Event

April 02, 2006 - April 06, 2006

Location / Event: Southern Sierra Nevada and San Joaquin Valley Significant Precipitation Event

2004 - 2005 Winter Season

January 07, 2005 - January 11, 2005

Location / Event: Southern California Significant Precipitation Event

February 17, 2005 - February 23, 2005

Location / Event: Southern California Significant Precipitation Event

May 17, 2005 - May 19, 2005

Location / Event: Northern California Significant Precipitation Event

1996 - 1997 Winter Season

December 26, 1996 - January 03, 1997

Location / Event: Southwest OR, Northern CA, and Western NV Significant Precipitation Event

1985 - 1986 Winter Season

February 11, 1986 - February 20, 1986

Location / Event: Northern and Central CA and Western NV Significant Precipitation Event