With 259 documented natural disaster events, ZIP code 50401 in Mason City, IA has a substantial history of natural hazard activity. These include 110 hailstorms, 70 floods, and 46 blizzards. Total documented property damage amounts to $23.8M. A total of 3 injuries have been reported across all events.
Hailstorms represent the most common natural hazard in this area, accounting for 42% of all recorded events (110 total). 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). Hail-related events have caused a combined $1.2M in documented property damage. The most recent recorded hailstorm occurred on Jun 20, 2025.
Floods account for 27% of the disaster record here, with 70 events documented. Of these, 53 (76%) 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 $8.4M in documented property damage. The most recent recorded flood occurred on Sep 20, 2018.
There have been 46 recorded blizzards in this area, representing 18% of all disaster events. Of these, 21 (46%) were rated at severity level 4 or 5 — the most intense on the normalized scale. The highest recorded severity for winter storm events here is 5/5 (extreme). Winter storm events have caused a combined $2M in documented property damage. The most recent recorded blizzard occurred on Feb 1, 2015.
There have been 18 recorded tornadoes in this area, representing 7% of all disaster events. One event reached severity level 4 or 5 on the normalized scale. The highest recorded severity for tornado-related events here is 5/5 (extreme). Tornado-related events have caused a combined $4.5M in documented property damage. The most recent recorded tornado occurred on Apr 12, 2022.
Mason City has experienced 10 severe wind events on record. Wind-related events have caused a combined $665K in documented property damage. The most recent recorded severe wind event occurred on Dec 15, 2021.
Mason City has experienced 4 extreme cold events on record. Of these, 4 (100%) were rated at severity level 4 or 5 — the most intense on the normalized scale. The highest recorded severity for cold-related events here is 5/5 (extreme). Cold-related events have caused a combined $7M in documented property damage. The most recent recorded extreme cold event occurred on Apr 11, 2012.
The most significant disaster event on record for Mason City was Frost/Freeze on Sep 15, 2011, which caused $2.7M in property damage. Another major event was Frost/Freeze (Oct 10, 2009), causing $2.5M in damages. EF1 Tornado on Jun 22, 1984 also caused significant damage ($2.5M).
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Based on federal and state records, ZIP code 50401 has experienced 259 natural disaster events. The hazard types affecting this area include hailstorms (110 events), floods (70 events), blizzards (46 events), tornadoes (18 events), severe wind events (10 events), extreme cold events (4 events), and extreme heat event (1 event). The primary hazard is hailstorms, which account for 42% of all recorded events.
Hailstorms are the most frequently recorded hazard in Mason City, IA, with 110 events documented. These events have caused a combined $1.2M in property damage.
Yes, Mason City (ZIP 50401) has 70 recorded flood events. These floods have caused $8.4M in total property damage. The most recent flood on record occurred on Sep 20, 2018.
Mason City has 18 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 $4.5M. The most recent tornado was recorded on Apr 12, 2022.
The most damaging natural disaster on record for ZIP code 50401 was Frost/Freeze, which occurred on Sep 15, 2011. This event caused $2.7M in documented property damage. It was rated at severity level 5/5.
Natural disasters have caused a documented total of $23.8M in property damage in the Mason City, IA area (ZIP 50401). 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 →