Federal records document 187 natural disaster events in the Longmont, CO area (ZIP 80503). These include 162 hailstorms, 8 floods, and 8 wildfires. Total documented property damage amounts to $220K. These events have resulted in 3 recorded deaths and 7 injuries.
The dominant hazard type for Longmont is hailstorms, with 162 recorded events making up 87% of the area's disaster history. 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). The most recent recorded hailstorm occurred on Aug 10, 2025.
Longmont has experienced 8 floods on record. Of these, 3 (38%) 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 $190K in documented property damage. 3 fatalities have been attributed to floods in this area. The most recent recorded flood occurred on Jul 31, 2021.
Longmont has experienced 8 wildfires on record. One event reached severity level 4 or 5 on the normalized scale. The highest recorded severity for wildfire-related events here is 4/5 (severe). The most recent recorded wildfire occurred on Mar 14, 2023.
Longmont has experienced 6 tornadoes on record. Of these, 2 (33%) 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 4/5 (severe). Tornado-related events have caused a combined $30K in documented property damage. The most recent recorded tornado occurred on Jun 4, 2015.
Longmont has experienced 3 severe wind events on record. The most recent recorded severe wind event occurred on Jul 25, 2018.
The most significant disaster event on record for Longmont was Flood on May 8, 2015, which caused $110K in property damage.
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Based on federal and state records, ZIP code 80503 has experienced 187 natural disaster events. The hazard types affecting this area include hailstorms (162 events), floods (8 events), wildfires (8 events), tornadoes (6 events), and severe wind events (3 events). The primary hazard is hailstorms, which account for 87% of all recorded events.
Hailstorms are the most frequently recorded hazard in Longmont, CO, with 162 events documented.
Yes, Longmont (ZIP 80503) has 8 recorded flood events. These floods have caused $190K in total property damage. The most recent flood on record occurred on Jul 31, 2021.
Longmont has 6 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 $30K. The most recent tornado was recorded on Jun 4, 2015.
The most damaging natural disaster on record for ZIP code 80503 was Flood, which occurred on May 8, 2015. This event caused $110K in documented property damage. It was rated at severity level 5/5.
Natural disasters have caused a documented total of $220K in property damage in the Longmont, CO area (ZIP 80503). 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 →