Federal records document 157 natural disaster events in the Diagonal, IA area (ZIP 50845). These include 63 hailstorms, 38 blizzards, and 24 floods. Total documented property damage amounts to $102.5M. These events have resulted in 1 recorded death and 5 injuries.
With 63 recorded incidents (40% of all events), hailstorms are the leading natural hazard for this ZIP code. Of these, 3 (5%) 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 $10.7M in documented property damage. The most recent recorded hailstorm occurred on Apr 26, 2024.
There have been 38 recorded blizzards in this area, representing 24% of all disaster events. Of these, 21 (55%) 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 $4.5M in documented property damage. The most recent recorded blizzard occurred on Feb 1, 2015.
There have been 24 recorded floods in this area, representing 15% of all disaster events. Of these, 14 (58%) 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 $21.9M in documented property damage. The most recent recorded flood occurred on Jun 25, 2019.
There have been 18 recorded tornadoes in this area, representing 11% of all disaster events. Of these, 4 (22%) 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 $60.5M in documented property damage. 1 fatality has been attributed to tornadoes in this area. The most recent recorded tornado occurred on Apr 17, 2025.
Diagonal has experienced 10 severe wind events on record. Wind-related events have caused a combined $496K in documented property damage. The most recent recorded severe wind event occurred on Apr 17, 2025.
Diagonal 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 Diagonal was EF4 Tornado on May 24, 1989, which caused $25M in property damage. Another major event was EF4 Tornado (May 24, 1989), causing $25M in damages. Flood on Jun 12, 2010 also caused significant damage ($20M).
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Based on federal and state records, ZIP code 50845 has experienced 157 natural disaster events. The hazard types affecting this area include hailstorms (63 events), blizzards (38 events), floods (24 events), tornadoes (18 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 40% of all recorded events.
Hailstorms are the most frequently recorded hazard in Diagonal, IA, with 63 events documented. These events have caused a combined $10.7M in property damage.
Yes, Diagonal (ZIP 50845) has 24 recorded flood events. These floods have caused $21.9M in total property damage. The most recent flood on record occurred on Jun 25, 2019.
Diagonal 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 $60.5M. The most recent tornado was recorded on Apr 17, 2025.
The most damaging natural disaster on record for ZIP code 50845 was EF4 Tornado, which occurred on May 24, 1989. This event caused $25M in documented property damage. It was rated at severity level 5/5.
Natural disasters have caused a documented total of $102.5M in property damage in the Diagonal, IA area (ZIP 50845). 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 →