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Storm Impacting the Northwest U.S.; Fire Weather Conditions in Southern California; Severe Weather in the South

A Pacific storm is bringing areas of low elevation rain, moderate to heavy mountain snow, and high winds to the Northwest. Strong Santa Ana winds and very dry conditions are producing elevated to critical fire weather conditions in southern California. Isolated strong to severe thunderstorms are possible through early Wednesday morning across parts of northeast Texas into western Tennessee. Read More >

Overview

A record cold air mass moved into the northern United States during late October 2020.  This cold air set multiple records, including coldest high temperatures and record low temperatures. A persistent and long duration snow also moved through the region after the cold arrived, with snow falling for over 24 hours in some locations. 

This widespread snow moved across the region, beginning the evening of Saturday October 24th and ending during the evening hours of Sunday October 25th. Snowfall totals ranged on average from 2 to 6 inches in most locations.  The highest snowfall total was located in Gregory county of South Dakota with 8 inches of snow. A few snowfall totals included 4.3" in Sioux Falls, 4.2" in Sioux City, 4.5" in Mitchell, and 3.5" in Huron. 

Radar Imagery
Radar Animation of The Snow
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