ZIP code 37421, covering Chattanooga, TN, has 99 natural disaster events in the historical record. These include 56 hailstorms, 24 floods, and 13 tornadoes. Total documented property damage amounts to $65.2M. These events have resulted in 14 recorded deaths and 154 injuries.
The dominant hazard type for Chattanooga is hailstorms, with 56 recorded events making up 57% of the area's disaster history. The most recent recorded hailstorm occurred on May 8, 2025.
There have been 24 recorded floods in this area, representing 24% of all disaster events. Of these, 13 (54%) 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 $15M in documented property damage. 1 fatality has been attributed to floods in this area. The most recent recorded flood occurred on Aug 12, 2025.
There have been 13 recorded tornadoes in this area, representing 13% of all disaster events. Of these, 3 (23%) 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 $49.6M in documented property damage. 10 fatalities have been attributed to tornadoes in this area. The most recent recorded tornado occurred on Apr 12, 2020.
Chattanooga has experienced 3 severe wind events on record. Wind-related events have caused a combined $510K in documented property damage. The most recent recorded severe wind event occurred on Jun 7, 2025.
Chattanooga has experienced 1 blizzard on record. 2 fatalities have been attributed to blizzards in this area. The most recent recorded blizzard occurred on Jan 14, 2024.
Chattanooga has experienced 1 extreme cold event on record. 1 fatality has been attributed to extreme cold events in this area. The most recent recorded extreme cold event occurred on Feb 16, 2015.
The most significant disaster event on record for Chattanooga was EF3 Tornado on Mar 2, 2012, which caused $28M in property damage. Another major event was EF4 Tornado (Apr 27, 2011), causing $20M in damages. Flood on Sep 21, 2009 also caused significant damage ($5.8M).
Explore disaster history for adjacent areas
Based on federal and state records, ZIP code 37421 has experienced 99 natural disaster events. The hazard types affecting this area include hailstorms (56 events), floods (24 events), tornadoes (13 events), severe wind events (3 events), blizzard (1 event), extreme cold event (1 event), and earthquake (1 event). The primary hazard is hailstorms, which account for 57% of all recorded events.
Hailstorms are the most frequently recorded hazard in Chattanooga, TN, with 56 events documented.
Yes, Chattanooga (ZIP 37421) has 24 recorded flood events. These floods have caused $15M in total property damage. The most recent flood on record occurred on Aug 12, 2025.
Chattanooga has 13 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 $49.6M. The most recent tornado was recorded on Apr 12, 2020.
The most damaging natural disaster on record for ZIP code 37421 was EF3 Tornado, which occurred on Mar 2, 2012. This event caused $28M in documented property damage. It was rated at severity level 4/5.
Natural disasters have caused a documented total of $65.2M in property damage in the Chattanooga, TN area (ZIP 37421). 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 →