Government agency data shows 26 natural disaster events for ZIP 21918 in Conowingo, MD. These include 15 hailstorms, 5 blizzards, and 3 extreme heat events. Total documented property damage amounts to $427.5K. These events have resulted in 3 recorded deaths and 50 injuries.
The dominant hazard type for Conowingo is hailstorms, with 15 recorded events making up 58% of the area's disaster history. The most recent recorded hailstorm occurred on Aug 17, 2025.
Conowingo has experienced 5 blizzards on record. One event reached severity level 4 or 5 on the normalized scale. The highest recorded severity for winter storm events here is 4/5 (severe). Winter storm events have caused a combined $67.5K in documented property damage. 1 fatality has been attributed to blizzards in this area. The most recent recorded blizzard occurred on Feb 5, 2010.
Conowingo has experienced 3 extreme heat events on record. One event reached severity level 4 or 5 on the normalized scale. The highest recorded severity for heat-related events here is 5/5 (extreme). 2 fatalities have been attributed to extreme heat events in this area. The most recent recorded extreme heat event occurred on Aug 1, 2006.
Conowingo has experienced 2 floods on record. Of these, 2 (100%) 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 $360K in documented property damage. The most recent recorded flood occurred on Sep 7, 2011.
Conowingo has experienced 1 tornado on record. The most recent recorded tornado occurred on Nov 30, 2020.
The most significant disaster event on record for Conowingo was Flood on Sep 7, 2011, which caused $250K in property damage. Another major event was Flood (Aug 28, 2011), causing $110K in damages.
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Based on federal and state records, ZIP code 21918 has experienced 26 natural disaster events. The hazard types affecting this area include hailstorms (15 events), blizzards (5 events), extreme heat events (3 events), floods (2 events), and tornado (1 event). The primary hazard is hailstorms, which account for 58% of all recorded events.
Hailstorms are the most frequently recorded hazard in Conowingo, MD, with 15 events documented.
Yes, Conowingo (ZIP 21918) has 2 recorded flood events. These floods have caused $360K in total property damage. The most recent flood on record occurred on Sep 7, 2011.
Conowingo has 1 recorded tornado event in the historical record. The most recent tornado was recorded on Nov 30, 2020.
The most damaging natural disaster on record for ZIP code 21918 was Flood, which occurred on Sep 7, 2011. This event caused $250K in documented property damage. It was rated at severity level 5/5.
Natural disasters have caused a documented total of $427.5K in property damage in the Conowingo, MD area (ZIP 21918). 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 →