ZIP code 57470, covering Rockham, SD, has 64 natural disaster events in the historical record. These include 55 hailstorms, 7 tornadoes, and 1 blizzard. Total documented property damage amounts to $2.6M. These events have resulted in 1 recorded death and 10 injuries.
The dominant hazard type for Rockham is hailstorms, with 55 recorded events making up 86% of the area's disaster history. One event reached severity level 4 or 5 on the normalized scale. The highest recorded severity for hail-related events here is 4/5 (severe). The most recent recorded hailstorm occurred on Jul 7, 2022.
Rockham has experienced 7 tornadoes on record. Tornado-related events have caused a combined $2.5M in documented property damage. 1 fatality has been attributed to tornadoes in this area. The most recent recorded tornado occurred on Aug 30, 2020.
Rockham has experienced 1 blizzard on record. One event reached severity level 4 or 5 on the normalized scale. The highest recorded severity for winter storm events here is 4/5 (severe). Winter storm events have caused a combined $23K in documented property damage. The most recent recorded blizzard occurred on Dec 25, 2016.
Rockham has experienced 1 severe wind event on record. The most recent recorded severe wind event occurred on Aug 28, 2013.
The most significant disaster event on record for Rockham was EF1 Tornado on Jun 18, 1964, which caused $2.5M in property damage.
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Based on federal and state records, ZIP code 57470 has experienced 64 natural disaster events. The hazard types affecting this area include hailstorms (55 events), tornadoes (7 events), blizzard (1 event), and severe wind event (1 event). The primary hazard is hailstorms, which account for 86% of all recorded events.
Hailstorms are the most frequently recorded hazard in Rockham, SD, with 55 events documented.
Rockham has 7 recorded tornado events in the historical record. The strongest tornado recorded reached severity level 3/5 on the normalized scale. Total property damage from tornadoes in this area is $2.5M. The most recent tornado was recorded on Aug 30, 2020.
The most damaging natural disaster on record for ZIP code 57470 was EF1 Tornado, which occurred on Jun 18, 1964. This event caused $2.5M in documented property damage. It was rated at severity level 2/5.
Natural disasters have caused a documented total of $2.6M in property damage in the Rockham, SD area (ZIP 57470). This figure is based on historical records from FEMA, NOAA Storm Events Database, and USGS, and covers events from the 1950s through the present. Actual damages may be higher, as not all events have complete damage assessments.
Data sourced from FEMA (disaster declarations, NFIP flood claims), NOAA Storm Events Database, USGS Earthquake Hazards Program, and NIFC wildfire records. Historical coverage varies by source, with most records beginning in the 1950s–1970s. Full methodology →