May 18
36 entries from the federal record fall on May 18, across every year it covers.
Tropical cyclones
Storms at their strongest near the U.S. on this date.
- 2020Arthur, tropical storm near Dare County, NC
Tornadoes
Tornadoes rated F3/EF3 or stronger, or that killed, on this date.
- 1995F4, 29 mile path, 3 killed Lawrence, TN; Giles, TN
- 1951F4, 2 mile path, 2 killed Young, TX
- 1995F4, 39 mile path, 1 killed Limestone, AL; Madison, AL; Jackson, AL
- 1977F4, 38.6 mile path Cimarron, OK; Baca, CO
- 2013EF4, 7 mile path Pawnee, KS
- 1950F3, 14.9 mile path Chase, KS
- 1959F3, 0.5 mile path Brown, KS
- 1959F3, 6.5 mile path Doniphan, KS
- 1971F3, 4.3 mile path Benton, IA
- 1971F3, 4.3 mile path Benton, IA
- 1975F3, 4.1 mile path Adams, CO
- 1977F3, 18.8 mile path Cherry, NE
- 1983F3, 9 mile path Tensas, LA
- 1983F3, 5 mile path Madison, LA
- 1995F3, 9 mile path Cumberland, TN
- 2019EF3, 18 mile path Runnels, TX
- 2019EF3, 5.8 mile path Runnels, TX
- 2019EF3, 7.8 mile path Coleman, TX
- 2025EF3, 6 mile path Ellis, OK
- 2025EF3, 13.3 mile path Gove, KS; Sheridan, KS
- 2025EF3, 10.7 mile path Hitchcock, NE
- 2025EF3, 4.2 mile path Sheridan, KS
- 2025EF3, 8.2 mile path Comanche, KS
- 2025EF3, 10.4 mile path Kiowa, KS
- 2025EF3, 15.8 mile path Kiowa, KS; Edwards, KS
- 2025EF3, 11.4 mile path Pratt, KS
- 2025EF3, 32.6 mile path Pratt, KS; Stafford, KS; Reno, KS
Deadly and costly storms
Earthquakes
Magnitude 5 or more in the lower 48 and Hawaii, 6.5 or more in Alaska, on this date (local time).
- 1940M6.9, Imperial Valley, California Imperial County, CA
- 1940M5.2, near Imperial, CA Imperial County, CA
- 1940M5.4, near Imperial, CA Imperial County, CA
- 1940M5.2, near Imperial, CA Imperial County, CA
- 1940M5.2, near Imperial, CA Imperial County, CA
- 1980M5.7, near Amboy, Washington Skamania County, WA