Severn, MD (ZIP 21144) has experienced 80 recorded natural disaster events based on federal and state agency records. These include 36 hailstorms, 14 floods, and 10 extreme heat events. Total documented property damage amounts to $13.4M. These events have resulted in 9 recorded deaths and 62 injuries.
The dominant hazard type for Severn is hailstorms, with 36 recorded events making up 45% of the area's disaster history. Hail-related events have caused a combined $2K in documented property damage. The most recent recorded hailstorm occurred on Jun 18, 2025.
There have been 14 recorded floods in this area, representing 18% of all disaster events. Of these, 6 (43%) 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 $3.6M in documented property damage. 2 fatalities have been attributed to floods in this area. The most recent recorded flood occurred on Jan 9, 2024.
Severn has experienced 10 extreme heat events on record. Of these, 5 (50%) 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). Heat-related events have caused a combined $10K in documented property damage. 5 fatalities have been attributed to extreme heat events in this area. The most recent recorded extreme heat event occurred on Jul 17, 2018.
Severn has experienced 8 blizzards on record. Of these, 2 (25%) 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 $2.2M in documented property damage. 2 fatalities have been attributed to blizzards in this area. The most recent recorded blizzard occurred on Feb 5, 2010.
Severn has experienced 8 tornadoes on record. 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 $6.6M in documented property damage. The most recent recorded tornado occurred on Sep 28, 2006.
Severn has experienced 4 severe wind events on record. Wind-related events have caused a combined $1M in documented property damage. The most recent recorded severe wind event occurred on Jul 29, 2023.
The most significant disaster event on record for Severn was EF1 Tornado on Sep 28, 2006, which caused $6M in property damage. Another major event was Flash Flood (Aug 12, 2014), causing $2.8M in damages. Winter Storm on Feb 14, 2003 also caused significant damage ($2M).
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Based on federal and state records, ZIP code 21144 has experienced 80 natural disaster events. The hazard types affecting this area include hailstorms (36 events), floods (14 events), extreme heat events (10 events), blizzards (8 events), tornadoes (8 events), and severe wind events (4 events). The primary hazard is hailstorms, which account for 45% of all recorded events.
Hailstorms are the most frequently recorded hazard in Severn, MD, with 36 events documented. These events have caused a combined $2K in property damage.
Yes, Severn (ZIP 21144) has 14 recorded flood events. These floods have caused $3.6M in total property damage. The most recent flood on record occurred on Jan 9, 2024.
Severn has 8 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 $6.6M. The most recent tornado was recorded on Sep 28, 2006.
The most damaging natural disaster on record for ZIP code 21144 was EF1 Tornado, which occurred on Sep 28, 2006. This event caused $6M in documented property damage. It was rated at severity level 2/5.
Natural disasters have caused a documented total of $13.4M in property damage in the Severn, MD area (ZIP 21144). 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 →