Delavan, IL (ZIP 61734) has experienced 83 recorded natural disaster events based on federal and state agency records. These include 47 hailstorms, 21 tornadoes, and 9 blizzards. Total documented property damage amounts to $30.2M. These events have resulted in 8 recorded deaths and 55 injuries.
Hailstorms represent the most common natural hazard in this area, accounting for 57% of all recorded events (47 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). The most recent recorded hailstorm occurred on Sep 26, 2023.
There have been 21 recorded tornadoes in this area, representing 25% of all disaster events. Of these, 3 (14%) 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 4/5 (severe). Tornado-related events have caused a combined $27.8M in documented property damage. 1 fatality has been attributed to tornadoes in this area. The most recent recorded tornado occurred on Apr 20, 2025.
Delavan has experienced 9 blizzards on record. Of these, 5 (56%) 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 $1.9M in documented property damage. 5 fatalities have been attributed to blizzards in this area. The most recent recorded blizzard occurred on Feb 25, 2020.
Delavan has experienced 2 extreme cold events on record. 2 fatalities have been attributed to extreme cold events in this area. The most recent recorded extreme cold event occurred on Jan 13, 2024.
Delavan has experienced 2 floods on record. Of these, 2 (100%) 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 $280K in documented property damage. The most recent recorded flood occurred on Aug 12, 2016.
Delavan has experienced 2 severe wind events on record. Wind-related events have caused a combined $125K in documented property damage. The most recent recorded severe wind event occurred on Aug 10, 2020.
The most significant disaster event on record for Delavan was EF3 Tornado on May 10, 2003, which caused $10M in property damage. Another major event was EF3 Tornado (Jun 27, 1951), causing $2.5M in damages. EF1 Tornado on Jun 19, 1990 also caused significant damage ($2.5M).
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Based on federal and state records, ZIP code 61734 has experienced 83 natural disaster events. The hazard types affecting this area include hailstorms (47 events), tornadoes (21 events), blizzards (9 events), extreme cold events (2 events), floods (2 events), and severe wind events (2 events). The primary hazard is hailstorms, which account for 57% of all recorded events.
Hailstorms are the most frequently recorded hazard in Delavan, IL, with 47 events documented.
Yes, Delavan (ZIP 61734) has 2 recorded flood events. These floods have caused $280K in total property damage. The most recent flood on record occurred on Aug 12, 2016.
Delavan 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 $27.8M. The most recent tornado was recorded on Apr 20, 2025.
The most damaging natural disaster on record for ZIP code 61734 was EF3 Tornado, which occurred on May 10, 2003. This event caused $10M in documented property damage. It was rated at severity level 4/5.
Natural disasters have caused a documented total of $30.2M in property damage in the Delavan, IL area (ZIP 61734). 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 →