May 15
45 entries from the federal record fall on May 15, across every year it covers.
Tornadoes
Tornadoes rated F3/EF3 or stronger, or that killed, on this date.
- 1968F5, 62.1 mile path, 13 killed Howard, IA; Franklin, IA; Butler, IA
- 1968F5, 13.1 mile path, 5 killed Fayette, IA
- 1968F4, 20.9 mile path, 35 killed Jackson, AR; Craighead, AR; Mississippi, AR
- 1957F4, 17 mile path, 21 killed Briscoe, TX
- 1968F4, 0.3 mile path, 7 killed Independence, AR
- 2013EF4, 2.5 mile path, 6 killed Hood, TX
- 1968F3, 2 mile path, 4 killed St. Clair, IL
- 1968F3, 7.3 mile path, 3 killed Baxter, AR
- 1977F3, 0.8 mile path, 1 killed Stephens, OK
- 1990F3, 7 mile path, 1 killed Payne, OK
- 1952F3, 7.4 mile path Weld, CO
- 1957F3, 10.2 mile path Donley, TX
- 1957F3, 1 mile path Swisher, TX
- 1961F3, 3 mile path Cattaraugus, NY
- 1962F3, 0.1 mile path Gregory, SD
- 1965F3, 9.3 mile path Jones, TX
- 1965F3, 1 mile path Midland, TX
- 1968F3, 12.6 mile path Mason, IL; Logan, IL
- 1968F3, 2.7 mile path Miami, KS; Cass, MO
- 1968F3, 7.1 mile path Iroquois, IL
- 1972F3, 8.5 mile path Pitt, NC
- 1986F3, 1.2 mile path Branch, MI
- 1991F3, 11.5 mile path Harper, OK
- 1991F3, 15 mile path Collingsworth, TX; Wheeler, TX
- 1995F3, 6 mile path Gray, KS
- 1998F3, 47 mile path Washington, IA; Johnson, IA; Cedar, IA
- 1998F3, 8 mile path Buffalo, WI; Pepin, WI
- 2013EF3, 7.8 mile path Johnson, TX
- 1976F2, 10.1 mile path, 3 killed Robeson, NC
- 1976F2, 3.8 mile path, 1 killed Richland, SC
- 1986F2, 4 mile path, 1 killed Scott, MO
- 1968F1, 25.4 mile path, 4 killed De Witt, IL
- 1980F1, 0.5 mile path, 1 killed Franklin, LA
- 1998F1, 9 mile path, 1 killed Stearns, MN
- 1957F0, 4.1 mile path, 1 killed Floyd, TX
- 2018EF0, 0.6 mile path, 1 killed Orange, NY
Earthquakes
Magnitude 5 or more in the lower 48 and Hawaii, 6.5 or more in Alaska, on this date (local time).
- 1909M5.4, Northeastern Montana Daniels County, MT
- 1910M6.0, Lake Elsinore, California Riverside County, CA
- 1954M5.0, near Machias, Washington Snohomish County, WA
- 1993M6.9, near Adak, Alaska Aleutians West Census Area, AK
- 1999M5.5, near Aspen Springs, California Mono County, CA
- 2020M6.5, Monte Cristo Range, NV Esmeralda County, NV
- 2020M5.1, near Mina, Nevada Esmeralda County, NV
Wildfires
Fires of 50,000 acres or more that began on this date.
- 2002Spurs Fire, 72,583 acres AK
- 2004Peppin Fire, 60,500 acres NM