Alton, IA (ZIP 51003) has experienced 81 recorded natural disaster events based on federal and state agency records. These include 53 hailstorms, 8 severe wind events, and 7 blizzards. Total documented property damage amounts to $26.2M. These events have resulted in 3 recorded deaths and 4 injuries.
The dominant hazard type for Alton is hailstorms, with 53 recorded events making up 65% of the area's disaster history. Hail-related events have caused a combined $2M in documented property damage. The most recent recorded hailstorm occurred on May 20, 2024.
Alton has experienced 8 severe wind events on record. Wind-related events have caused a combined $30K in documented property damage. The most recent recorded severe wind event occurred on Jul 28, 2025.
Alton has experienced 7 blizzards on record. Of these, 4 (57%) 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 $10.2M in documented property damage. 3 fatalities have been attributed to blizzards in this area. The most recent recorded blizzard occurred on Jan 14, 2021.
Alton has experienced 7 tornadoes on record. 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 $9.1M in documented property damage. The most recent recorded tornado occurred on May 11, 2014.
Alton has experienced 6 floods on record. Of these, 5 (83%) 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 $4.9M in documented property damage. The most recent recorded flood occurred on Jun 21, 2024.
The most significant disaster event on record for Alton was Winter Storm on Apr 9, 2013, which caused $10M in property damage. Another major event was EF1 Tornado (May 11, 2014), causing $3M in damages. EF2 Tornado on Aug 8, 1979 also caused significant damage ($2.5M).
Explore disaster history for adjacent areas
Based on federal and state records, ZIP code 51003 has experienced 81 natural disaster events. The hazard types affecting this area include hailstorms (53 events), severe wind events (8 events), blizzards (7 events), tornadoes (7 events), and floods (6 events). The primary hazard is hailstorms, which account for 65% of all recorded events.
Hailstorms are the most frequently recorded hazard in Alton, IA, with 53 events documented. These events have caused a combined $2M in property damage.
Yes, Alton (ZIP 51003) has 6 recorded flood events. These floods have caused $4.9M in total property damage. The most recent flood on record occurred on Jun 21, 2024.
Alton has 7 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 $9.1M. The most recent tornado was recorded on May 11, 2014.
The most damaging natural disaster on record for ZIP code 51003 was Winter Storm, which occurred on Apr 9, 2013. This event caused $10M in documented property damage. It was rated at severity level 5/5.
Natural disasters have caused a documented total of $26.2M in property damage in the Alton, IA area (ZIP 51003). 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 →