Federal records document 138 natural disaster events in the Chaska, MN area (ZIP 55318). These include 114 hailstorms, 11 severe wind events, and 5 floods. Total documented property damage amounts to $130.1M. These events have resulted in 5 recorded deaths and 180 injuries.
The dominant hazard type for Chaska is hailstorms, with 114 recorded events making up 83% of the area's disaster history. Of these, 3 (3%) were rated at severity level 4 or 5 — the most intense on the normalized scale. The highest recorded severity for hail-related events here is 4/5 (severe). Hail-related events have caused a combined $41.5M in documented property damage. The most recent recorded hailstorm occurred on Aug 15, 2025.
There have been 11 recorded severe wind events in this area, representing 8% of all disaster events. The most recent recorded severe wind event occurred on May 11, 2022.
Chaska has experienced 5 floods on record. Of these, 4 (80%) were rated at severity level 4 or 5 — the most intense on the normalized scale. The highest recorded severity for flood-related events here is 5/5 (extreme). Flood-related events have caused a combined $11M in documented property damage. The most recent recorded flood occurred on Jun 18, 2014.
Chaska has experienced 5 tornadoes on record. Of these, 3 (60%) were rated at severity level 4 or 5 — the most intense on the normalized scale. The highest recorded severity for tornado-related events here is 5/5 (extreme). Tornado-related events have caused a combined $77.5M in documented property damage. 3 fatalities have been attributed to tornadoes in this area. The most recent recorded tornado occurred on Jun 28, 2025.
Chaska has experienced 2 extreme cold events on record. Cold-related events have caused a combined $20K in documented property damage. 1 fatality has been attributed to extreme cold events in this area. The most recent recorded extreme cold event occurred on Jan 29, 2019.
Chaska has experienced 1 blizzard on record. 1 fatality has been attributed to blizzards in this area. The most recent recorded blizzard occurred on Dec 23, 1996.
The most significant disaster event on record for Chaska was EF4 Tornado on May 6, 1965, which caused $25M in property damage and was linked to 3 fatalities. Another major event was 3" Hail (Jun 11, 2001), causing $25M in damages. EF4 Tornado on May 6, 1965 also caused significant damage ($25M).
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Based on federal and state records, ZIP code 55318 has experienced 138 natural disaster events. The hazard types affecting this area include hailstorms (114 events), severe wind events (11 events), floods (5 events), tornadoes (5 events), extreme cold events (2 events), and blizzard (1 event). The primary hazard is hailstorms, which account for 83% of all recorded events.
Hailstorms are the most frequently recorded hazard in Chaska, MN, with 114 events documented. These events have caused a combined $41.5M in property damage.
Yes, Chaska (ZIP 55318) has 5 recorded flood events. These floods have caused $11M in total property damage. The most recent flood on record occurred on Jun 18, 2014.
Chaska has 5 recorded tornado events in the historical record. The strongest tornado recorded reached severity level 5/5 on the normalized scale. Total property damage from tornadoes in this area is $77.5M. The most recent tornado was recorded on Jun 28, 2025.
The most damaging natural disaster on record for ZIP code 55318 was EF4 Tornado, which occurred on May 6, 1965. This event caused $25M in documented property damage. It resulted in 3 reported fatalities. It was rated at severity level 5/5.
Natural disasters have caused a documented total of $130.1M in property damage in the Chaska, MN area (ZIP 55318). 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 →