Geismar, LA (ZIP 70734) has experienced 61 recorded natural disaster events based on federal and state agency records. These include 31 hailstorms, 14 tornadoes, and 10 floods. Total documented property damage amounts to $673.4M. These events have resulted in 3 recorded deaths and 15 injuries.
Hailstorms represent the most common natural hazard in this area, accounting for 51% of all recorded events (31 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). Hail-related events have caused a combined $50K in documented property damage. The most recent recorded hailstorm occurred on May 6, 2025.
There have been 14 recorded tornadoes in this area, representing 23% of all disaster events. 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 $3.8M in documented property damage. 1 fatality has been attributed to tornadoes in this area. The most recent recorded tornado occurred on Mar 4, 2025.
Geismar has experienced 10 floods on record. Of these, 7 (70%) 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 $461.6M in documented property damage. 1 fatality has been attributed to floods in this area. The most recent recorded flood occurred on Jul 30, 2025.
Geismar has experienced 4 hurricanes on record. Hurricane-related events have caused a combined $207.9M in documented property damage. 1 fatality has been attributed to hurricanes in this area. The most recent recorded hurricane occurred on Aug 29, 2021.
Geismar has experienced 2 severe wind events on record. Wind-related events have caused a combined $16.5K in documented property damage. The most recent recorded severe wind event occurred on May 13, 2024.
The most significant disaster event on record for Geismar was Flash Flood on Aug 12, 2016, which caused $460M in property damage. Another major event was Category 2 Hurricane (Typhoon) (Aug 29, 2021), causing $100M in damages. Category 1 Hurricane (Typhoon) on Aug 29, 2021 also caused significant damage ($100M).
Explore disaster history for adjacent areas
Based on federal and state records, ZIP code 70734 has experienced 61 natural disaster events. The hazard types affecting this area include hailstorms (31 events), tornadoes (14 events), floods (10 events), hurricanes (4 events), and severe wind events (2 events). The primary hazard is hailstorms, which account for 51% of all recorded events.
Hailstorms are the most frequently recorded hazard in Geismar, LA, with 31 events documented. These events have caused a combined $50K in property damage.
Yes, Geismar (ZIP 70734) has 10 recorded flood events. These floods have caused $461.6M in total property damage. The most recent flood on record occurred on Jul 30, 2025.
Geismar has 14 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 $3.8M. The most recent tornado was recorded on Mar 4, 2025.
The most damaging natural disaster on record for ZIP code 70734 was Flash Flood, which occurred on Aug 12, 2016. This event caused $460M in documented property damage. It was rated at severity level 5/5.
Natural disasters have caused a documented total of $673.4M in property damage in the Geismar, LA area (ZIP 70734). 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 →