Government agency data shows 41 natural disaster events for ZIP 94509 in Antioch, CA. These include 22 wildfires, 16 earthquakes, and 2 floods. Total documented property damage amounts to $100K.
The dominant hazard type for Antioch is wildfires, with 22 recorded events making up 54% of the area's disaster history. The most recent recorded wildfire occurred on Aug 9, 2019.
There have been 16 recorded earthquakes in this area, representing 39% of all disaster events. The most recent recorded earthquake occurred on Sep 15, 2025.
Antioch has experienced 2 floods on record. One event reached severity level 4 or 5 on the normalized scale. The highest recorded severity for flood-related events here is 4/5 (severe). Flood-related events have caused a combined $75K in documented property damage. The most recent recorded flood occurred on Jan 20, 2024.
Antioch has experienced 1 tornado on record. Tornado-related events have caused a combined $25K in documented property damage. The most recent recorded tornado occurred on Jan 23, 2010.
The most significant disaster event on record for Antioch was Flood on Oct 13, 2009, which caused $75K in property damage.
Explore disaster history for adjacent areas
Based on federal and state records, ZIP code 94509 has experienced 41 natural disaster events. The hazard types affecting this area include wildfires (22 events), earthquakes (16 events), floods (2 events), and tornado (1 event). The primary hazard is wildfires, which account for 54% of all recorded events.
Wildfires are the most frequently recorded hazard in Antioch, CA, with 22 events documented.
Yes, Antioch (ZIP 94509) has 2 recorded flood events. These floods have caused $75K in total property damage. The most recent flood on record occurred on Jan 20, 2024.
Antioch has 1 recorded tornado event in the historical record. Total property damage from tornadoes in this area is $25K. The most recent tornado was recorded on Jan 23, 2010.
The most damaging natural disaster on record for ZIP code 94509 was Flood, which occurred on Oct 13, 2009. This event caused $75K in documented property damage. It was rated at severity level 4/5.
Natural disasters have caused a documented total of $100K in property damage in the Antioch, CA area (ZIP 94509). 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 →