States › South Dakota › 1955
South Dakota, 1955
The year's recorded storm events, federal disaster declarations and flood insurance claims.
NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders.
Events by hazard
Includes events recorded by forecast zone. The state's yearly total for 1955 was 32 against 16 in 1954.
Counties with the most recorded events
Notable events
| Date | County | Event type | Magnitude | Property damage | Deaths | Injuries |
|---|---|---|---|---|---|---|
| 19 Apr 1955 | Corson | Tornado | F0 | $2,500 | — | 2 |
| 28 Jun 1955 | Brown | Tornado | F2 | $25,000 | — | — |
| 28 Aug 1955 | Grant | Tornado | F2 | $25,000 | — | — |
| 19 Apr 1955 | Dewey | Tornado | F2 | $2,500 | — | — |
| 19 Apr 1955 | Potter | Tornado | F2 | $2,500 | — | — |
| 19 Apr 1955 | Potter | Tornado | F2 | $2,500 | — | — |
| 20 Sep 1955 | Butte | Tornado | F2 | $2,500 | — | — |
| 19 Apr 1955 | Walworth | Tornado | F1 | $250 | — | — |
| 19 Apr 1955 | Potter | Tornado | F2 | $250 | — | — |
| 19 Apr 1955 | Corson | Tornado | F0 | $250 | — | — |
| 19 Apr 1955 | Brown | Tornado | F2 | $250 | — | — |
| 19 Apr 1955 | Edmunds | Tornado | F2 | — | — | — |
| 1 Jul 1955 | Edmunds | Tornado | F1 | — | — | — |
| 1 Jul 1955 | Buffalo | Tornado | F0 | — | — | — |
Up to 40 events with deaths, injuries, damage of $50,000 or more, or a tornado rating, ranked by deaths, injuries and damage.
Federal disaster declarations in 1955
No declaration touching South Dakota was made in 1955.
Flood insurance claims with a 1955 date of loss
No NFIP claims in South Dakota carry a 1955 date of loss. The NFIP claims file begins with 1978 losses.
Sources: NOAA NCEI Storm Events through 30 Jun 2026; OpenFEMA DisasterDeclarationsSummaries v2 (1 Oct 2026); OpenFEMA NfipClaims v3 (8 Sep 2026). Built 1 Oct 2026.