Government records show 308 natural disaster events affecting the Knoxville, IA area (ZIP 50138) — a notably active disaster history. These include 131 hailstorms, 102 floods, and 40 blizzards. Total documented property damage amounts to $42.8M. A total of 11 injuries have been reported across all events.
With 131 recorded incidents (43% of all events), hailstorms are the leading natural hazard for this ZIP code. Of these, 2 (2%) 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 5/5 (extreme). Hail-related events have caused a combined $896K in documented property damage. The most recent recorded hailstorm occurred on May 19, 2025.
Floods account for 33% of the disaster record here, with 102 events documented. Of these, 74 (73%) 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 $28.9M in documented property damage. The most recent recorded flood occurred on May 28, 2019.
There have been 40 recorded blizzards in this area, representing 13% of all disaster events. Of these, 21 (53%) 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 $4.7M in documented property damage. The most recent recorded blizzard occurred on Feb 1, 2015.
There have been 21 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 4/5 (severe). Tornado-related events have caused a combined $2.3M in documented property damage. The most recent recorded tornado occurred on Apr 4, 2023.
Knoxville has experienced 10 severe wind events on record. Wind-related events have caused a combined $1.7M in documented property damage. The most recent recorded severe wind event occurred on Jul 28, 2015.
Knoxville has experienced 3 extreme cold events on record. Of these, 3 (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 $4.3M in documented property damage. The most recent recorded extreme cold event occurred on Apr 11, 2012.
The most significant disaster event on record for Knoxville was Flood on Jun 12, 2010, which caused $20M in property damage. Another major event was Heavy Snow (Oct 26, 1997), causing $3.2M in damages. Frost/Freeze on Oct 10, 2009 also caused significant damage ($2.5M).
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Based on federal and state records, ZIP code 50138 has experienced 308 natural disaster events. The hazard types affecting this area include hailstorms (131 events), floods (102 events), blizzards (40 events), tornadoes (21 events), severe wind events (10 events), extreme cold events (3 events), and extreme heat event (1 event). The primary hazard is hailstorms, which account for 43% of all recorded events.
Hailstorms are the most frequently recorded hazard in Knoxville, IA, with 131 events documented. These events have caused a combined $896K in property damage.
Yes, Knoxville (ZIP 50138) has 102 recorded flood events. These floods have caused $28.9M in total property damage. The most recent flood on record occurred on May 28, 2019.
Knoxville has 21 recorded tornado events in the historical record. The strongest tornado recorded reached severity level 4/5 on the normalized scale. Total property damage from tornadoes in this area is $2.3M. The most recent tornado was recorded on Apr 4, 2023.
The most damaging natural disaster on record for ZIP code 50138 was Flood, which occurred on Jun 12, 2010. This event caused $20M in documented property damage. It was rated at severity level 5/5.
Natural disasters have caused a documented total of $42.8M in property damage in the Knoxville, IA area (ZIP 50138). 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 →