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August 18

27 entries from the federal record fall on August 18, across every year it covers.

Tropical cyclones

Storms at their strongest near the U.S. on this date.

  1. 1879Unnamed storm, category 3 near Onslow County, NC
  2. 1899Unnamed storm, category 3 near Carteret County, NC
  3. 1916Unnamed storm, category 4 near Willacy County, TX
  4. 1969Camille, category 5 near Hancock County, MS
  5. 1983Alicia, category 3 near Galveston County, TX
  6. 1986Charley, category 1 near Virginia Beach city, VA

Tornadoes

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

  1. 2005F3, 18.6 mile path, 1 killed Dane, WI; Jefferson, WI
  2. 1967F3, 0.5 mile path Galveston, TX
  3. 1968F3, 21.3 mile path Douglas, NE

Deadly and costly storms

  1. 2018Excessive Heat, 18 deaths Maricopa
  2. 2007Flash Flood, 7 deaths, $176 million Dodge; Fillmore; Houston; Mower
  3. 2007Flash Flood, 6 deaths, $5.1 million Blaine; Caddo; Canadian; Cleveland
  4. 2015Flash Flood, 6 deaths, $3.4 million
  5. 2014Heavy Rain, 3 deaths, $25,000 Juneau; Trempealeau

Earthquakes

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

  1. 1908M5.8, Near Eureka, California Humboldt County, CA
  2. 1912M6.2, Near Flagstaff, Arizona Coconino County, AZ
  3. 1915M5.6, Near Marblemount, Washington Skagit County, WA
  4. 1942M5.0, near Hawthorne, Nevada Mineral County, NV
  5. 1959M6.5, near Madison Junction, Wyoming Park County, WY
  6. 1959M6.0, near West Yellowstone, Montana Gallatin County, MT
  7. 1959M5.7, near Mammoth, Wyoming Park County, WY
  8. 1959M6.3, near Mammoth, Wyoming Park County, WY
  9. 1959M6.0, near West Yellowstone, Montana Madison County, MT
  10. 1966M5.2, near Caliente, Nevada Lincoln County, NV

Wildfires

Fires of 50,000 acres or more that began on this date.

  1. 2020W-5 Cold Springs Fire, 84,096 acres CA, NV
  2. 2020Griffin Fire, 61,410 acres AZ
  3. 2018Sheep Creek Fire, 58,436 acres NV