March 21
41 entries from the federal record fall on March 21, across every year it covers.
Tornadoes
Tornadoes rated F3/EF3 or stronger, or that killed, on this date.
- 1952F4, 14.6 mile path, 50 killed White, AR
- 1952F4, 46.8 mile path, 38 killed Hardeman, TN; Chester, TN; Henderson, TN
- 1952F4, 13.1 mile path, 29 killed Woodruff, AR
- 1952F4, 6.5 mile path, 17 killed Pemiscot, MO
- 1952F4, 29.6 mile path, 16 killed Marshall, MS; Fayette, TN
- 1952F4, 13 mile path, 7 killed Howard, AR
- 1952F4, 0.1 mile path, 4 killed Cross, AR
- 1952F4, 2 mile path, 4 killed Dyer, TN
- 1952F4, 7.6 mile path, 2 killed Lonoke, AR
- 1952F4, 4.7 mile path, 2 killed Dyer, TN
- 1952F3, 18.1 mile path, 10 killed Dyer, TN
- 1952F3, 16.2 mile path, 9 killed Lonoke, AR
- 1952F3, 51.8 mile path, 3 killed Poinsett, AR; Mississippi, AR
- 1952F3, 9.4 mile path, 1 killed Poinsett, AR
- 1952F3, 39.7 mile path, 1 killed Mississippi, AR
- 1952F3, 17.7 mile path Saline, AR
- 1952F3, 17.6 mile path Woodruff, AR
- 1952F3, 28.5 mile path Jackson, AR; Poinsett, AR; Craighead, AR
- 1952F3, 0.1 mile path Carroll, TN
- 1952F3, 5.1 mile path Carroll, TN
- 1953F3, 31.8 mile path Emmet, IA
- 1957F3, 2 mile path Terrebonne, LA
- 1962F3, 2.3 mile path Etowah, AL
- 1962F3, 10 mile path Cherokee, GA
- 1976F3, 5.6 mile path Madison, VA
- 1976F3, 0.5 mile path Monroe, PA
- 1991F3, 11 mile path Pontotoc, OK
- 2022EF3, 34.5 mile path Jack, TX; Montague, TX
- 1952F2, 13.3 mile path, 5 killed Prairie, AR
- 1952F2, 0.1 mile path, 2 killed Gibson, TN
- 1952F2, 0.1 mile path, 1 killed Carroll, TN
- 1953F2, 0.1 mile path, 1 killed Stearns, MN
- 2022EF2, 5.1 mile path, 1 killed Grayson, TX; Marshall, OK
- 2022EF2, 19.1 mile path, 1 killed Houston, TX
- 1952F0, 0.1 mile path, 1 killed Prairie, AR
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).
- 1904M5.7, Passamaquoddy Bay area, Maine Washington County, ME
- 1905M7.2, near Adak, Alaska Aleutians West Census Area, AK
- 1953M5.0, near South Lake Tahoe, California El Dorado County, CA
- 1996M6.8, Rat Islands, Aleutian Islands, Alaska Aleutians West Census Area, AK