ZIP code 18104, covering Allentown, PA, has 95 natural disaster events in the historical record. These include 47 hailstorms, 15 blizzards, and 10 extreme heat events. Total documented property damage amounts to $62.9M. These events have resulted in 23 recorded deaths and 69 injuries.
Hailstorms represent the most common natural hazard in this area, accounting for 49% of all recorded events (47 total). Hail-related events have caused a combined $125K in documented property damage. The most recent recorded hailstorm occurred on May 6, 2025.
There have been 15 recorded blizzards in this area, representing 16% of all disaster events. Of these, 8 (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 $3.8M in documented property damage. 10 fatalities have been attributed to blizzards in this area. The most recent recorded blizzard occurred on Feb 1, 2021.
Allentown has experienced 10 extreme heat events on record. Of these, 4 (40%) were rated at severity level 4 or 5 — the most intense on the normalized scale. The highest recorded severity for heat-related events here is 5/5 (extreme). 7 fatalities have been attributed to extreme heat events in this area. The most recent recorded extreme heat event occurred on Jul 4, 2012.
Allentown has experienced 7 floods on record. Of these, 6 (86%) 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 $1.4M in documented property damage. The most recent recorded flood occurred on Apr 15, 2023.
Allentown has experienced 7 tornadoes on record. Tornado-related events have caused a combined $54M in documented property damage. The most recent recorded tornado occurred on Aug 7, 2023.
Allentown has experienced 6 severe wind events on record. Wind-related events have caused a combined $3.5M in documented property damage. 3 fatalities have been attributed to severe wind events in this area. The most recent recorded severe wind event occurred on Jun 30, 2015.
The most significant disaster event on record for Allentown was EF1 Tornado on Aug 11, 1983, which caused $25M in property damage. Another major event was EF1 Tornado (Aug 11, 1983), causing $25M in damages. 81 mph High Wind on Oct 29, 2012 also caused significant damage ($3M).
Explore disaster history for adjacent areas
Based on federal and state records, ZIP code 18104 has experienced 95 natural disaster events. The hazard types affecting this area include hailstorms (47 events), blizzards (15 events), extreme heat events (10 events), floods (7 events), tornadoes (7 events), severe wind events (6 events), and extreme cold events (3 events). The primary hazard is hailstorms, which account for 49% of all recorded events.
Hailstorms are the most frequently recorded hazard in Allentown, PA, with 47 events documented. These events have caused a combined $125K in property damage.
Yes, Allentown (ZIP 18104) has 7 recorded flood events. These floods have caused $1.4M in total property damage. The most recent flood on record occurred on Apr 15, 2023.
Allentown has 7 recorded tornado events in the historical record. The strongest tornado recorded reached severity level 3/5 on the normalized scale. Total property damage from tornadoes in this area is $54M. The most recent tornado was recorded on Aug 7, 2023.
The most damaging natural disaster on record for ZIP code 18104 was EF1 Tornado, which occurred on Aug 11, 1983. This event caused $25M in documented property damage. It was rated at severity level 2/5.
Natural disasters have caused a documented total of $62.9M in property damage in the Allentown, PA area (ZIP 18104). 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 →