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Hazards

Analysis

Rankings

Reference

November 20

9 entries from the federal record fall on November 20, across every year it covers.

Tornadoes

Tornadoes rated F3/EF3 or stronger, or that killed, on this date.

  1. 1957F3, 1.5 mile path, 1 killed Wayne, MI
  2. 1973F3, 11.9 mile path Grenada, MS; Tallahatchie, MS
  3. 1988F3, 0.5 mile path Tuscaloosa, AL

Deadly and costly storms

  1. 2023Debris Flow, 6 deaths, $2.2 million Haines Borough; Hoonah-Angoon Census Area; Juneau City and Borough; Ketchikan Gateway Borough
  2. 2009Dust Storm, 4 deaths, $250,000 Churchill; Douglas; Lyon; Pershing
  3. 2010Winter Weather, 4 deaths, $100,000 York
  4. 2009Heavy Rain, 3 deaths, $20,000 Collin

Earthquakes

Magnitude 5 or more in the lower 48 and Hawaii, 6.5 or more in Alaska, on this date (local time).

  1. 1915M6.6, Baja California-Sonora Border Region, Mexico Yuma County, AZ
  2. 1971M5.4, near Ferndale, California Humboldt County, CA