Dorchester County, Maryland
Natural disaster risk, federal disaster history and flood insurance facts.
Dorchester County, Maryland has a relatively low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is higher than 54% of US counties. It ranks 16th of 24 counties in Maryland. The costliest hazards here are coastal flooding, hurricanes and inland flooding. FEMA estimates about $16 million a year in expected losses, or roughly $482 per resident. Since 1972 it has been included in 18 federal disaster or emergency declarations for natural events (12 major disasters). The most recent was in January 2026 (severe winter storm). About 1 in 11 homes here carry federal flood insurance (1,382 policies). Since 1978, federal flood insurance has paid about $22 million on 1,142 claims here, including $16 million for floods in 2003.
FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.
Top risks in Dorchester County
- Learn your evacuation zone; it is set by surge risk, not by distance from the beach.
- Ask about flood insurance even outside a mapped high-risk zone.
- Know your evacuation zone and route before June 1.
- Ask about roof age, shutters and the separate wind or hurricane deductible on your home policy.
- Check the FEMA flood map for your address, and ask the seller or landlord about past flooding.
- Price a flood policy now. Most new federal policies take 30 days to start.
All 18 hazards
What the ratings mean ›| Hazard | Rating | Score | Expected loss a year | |
|---|---|---|---|---|
| Coastal flooding | 91.2 | $6M | ||
| Hurricane | 85.4 | $3M | ||
| Inland flooding | 21.6 | $2M | ||
| Drought | 81.2 | $887K | ||
| Cold wave | 44.8 | $687K | ||
| Heat wave | 63.0 | $587K | ||
| Wildfire | 83.2 | $517K | ||
| Tornado | 31.0 | $477K | ||
| Strong wind | 44.1 | $409K | ||
| Earthquake | 53.4 | $289K | ||
| Lightning | 37.0 | $126K | ||
| Ice storm | 45.7 | $62K | ||
| Winter weather | 44.9 | $48K | ||
| Hail | 8.4 | $22K | ||
| Landslide | 10.7 | $28 |
Scores are percentiles: a score of 90 means higher risk than about 90% of US counties for that hazard. Hazards FEMA does not rate here are left out. Social vulnerability is relatively high and community resilience is very high in FEMA's measures.
Federal disaster history
Recent disasters nationwide ›Declarations by decade
Federal declarations for natural events that included Dorchester County. 2020s bar runs to November 2026.
By type
Most recent
Show all 18
Maryland also had 1 statewide declarations that did not name single counties.
Storm history since 1958
Tornado risk by county ›The National Weather Service has logged 279 storm reports in Dorchester County since 1958, with 1 death and 18 injuries and about $8 million in reported damage. The strongest on record here was an F3 tornado on April 28, 2002 near Taylors Is.
Strongest tornadoes
| Date | Strength | Near | Hurt / killed |
|---|---|---|---|
| Apr 28, 2002 | F3 | Taylors Is | 0 / 0 |
| May 8, 1984 | F1 | – | 6 / 1 |
| May 8, 1984 | F1 | – | 8 / 0 |
| Oct 14, 2003 | F1 | Cambridge | 0 / 0 |
| May 16, 2025 | EF1 | Rhodesdale | 0 / 0 |
Most damaging storms
| Date | Type | Near | Damage |
|---|---|---|---|
| May 8, 1984 | Tornado | – | $3M |
| May 8, 1984 | Tornado | – | $3M |
| Feb 24, 2012 | Thunderstorm Wind | Cambridge | $1M |
| Oct 14, 2003 | Tornado | Cambridge | $500K |
| May 13, 2000 | Thunderstorm Wind | Cambridge | $300K |
| Apr 28, 2002 | Tornado | Taylors Is | $150K |
Source: NOAA Storm Events Database, county-based reports through Jul 28, 2026. Tornado records start in 1950, hail and wind in 1955, and floods and other storm types in 1996, so older decades undercount. Damage is in dollars of the year it happened and is often an estimate. Winter storms, heat and hurricanes are logged by forecast zone, not county, so they are not counted here.
Hurricanes and tropical storms
Hurricane risk by county ›Since 1856, 3 hurricanes and 28 tropical storms have passed within 65 miles of the center of Dorchester County, 14 of them since 1950. The strongest was an unnamed hurricane in 1878, with top winds near 95 mph about 61 miles away.
Strongest storms nearby
| Date | Storm | Strength | Closest |
|---|---|---|---|
| Oct 23, 1878 | Unnamed | Category 1, 95 mph | 61 mi |
| Oct 10, 1894 | Unnamed | Category 1, 80 mph | 62 mi |
| Aug 28, 2011 | Irene | Category 1, 75 mph | 64 mi |
| Sep 16, 1999 | Floyd | Tropical storm, 70 mph | 62 mi |
| Aug 23, 1933 | Unnamed | Tropical storm, 70 mph | 61 mi |
| Aug 4, 2020 | Isaias | Tropical storm, 70 mph | 65 mi |
Most recent storms
| Date | Storm | Strength | Closest |
|---|---|---|---|
| Jul 9, 2021 | Elsa | Tropical storm, 60 mph | 30 mi |
| Aug 4, 2020 | Isaias | Tropical storm, 70 mph | 65 mi |
| Aug 28, 2011 | Irene | Category 1, 75 mph | 64 mi |
| Sep 6, 2008 | Hanna | Tropical storm, 50 mph | 56 mi |
| Aug 31, 2004 | Gaston | Tropical storm, 40 mph | 64 mi |
| Sep 16, 1999 | Floyd | Tropical storm, 70 mph | 62 mi |
Source: NOAA National Hurricane Center best-track records (HURDAT2), 1851 to 2025 for the Atlantic and 1949 to 2025 for the eastern Pacific. A storm counts if its track passed within 65 miles of the county's center while it was a tropical storm or hurricane. Strength is the storm's top sustained wind at that point, not the wind measured in the county. Older storms over the open sea were sometimes missed.
Flood insurance in Dorchester County
Check your address flood zone ›National Flood Insurance Program (NFIP) records only; private flood policies are not included. Home counts as of Aug 3, 2026. Since 2021 NFIP prices each home separately under Risk Rating 2.0, so your price depends on the building, not the county. Ask an agent for a quote.
Homes in Dorchester County
Older homes and mobile homes usually suffer more damage in storms, floods and earthquakes, and can cost more to insure. If you are buying, ask about roof age, foundation bolting and any retrofits. Source: US Census Bureau, American Community Survey 2020 to 2024 5-year estimates; 16,433 housing units.
Compare in Maryland
All 24 ›| Largest counties | Overall risk | Top hazard |
|---|---|---|
| Montgomery County | Inland flooding | |
| Prince George's County | Inland flooding | |
| Baltimore County | Inland flooding | |
| Anne Arundel County | Inland flooding | |
| Baltimore City | Inland flooding | |
| Howard County | Inland flooding | |
| Frederick County | Inland flooding | |
| Harford County | Inland flooding |
Neighboring counties
| County | Overall risk | Declarations |
|---|---|---|
| Sussex County, DE | 18 | |
| St. Mary's County | 16 | |
| Wicomico County | 12 | |
| Calvert County | 22 | |
| Talbot County | 18 | |
| Caroline County | 19 | |
| Somerset County | 12 |
Common questions about Dorchester County
What is the biggest natural hazard in Dorchester County?
Coastal flooding has the highest expected yearly losses in Dorchester County, about $5.8 million a year in FEMA's estimate. Hurricane is second at $3.5 million.
How many federal disasters has Dorchester County had?
Dorchester County has been included in 18 federal disaster or emergency declarations for natural events since 1972, including 12 major disasters. The most recent was Severe Winter Storm in January 2026.
Is Dorchester County a high-risk place to live?
Its overall rating is Relatively Low, 16th highest of 24 in Maryland. A county rating covers the whole area. Risk at one address can be much higher or lower, so check the FEMA flood map and ask about the home's history.
Do I need flood insurance in Dorchester County?
Standard home insurance does not cover flooding. About 1 in 11 homes in Dorchester County has federal flood insurance. Lenders require it in mapped high-risk zones, but many flood claims come from outside those zones.
How many tornadoes has Dorchester County had?
NOAA records list 15 tornadoes in Dorchester County since 1950. The strongest was an F3 tornado on April 28, 2002 near Taylors Is. The weather service has also logged 40 hail reports and 31 floods here.
How many hurricanes have hit Dorchester County?
NOAA's hurricane records show 3 hurricanes and 28 tropical storms passing within 65 miles of the center of Dorchester County. The strongest was an unnamed hurricane in 1878, with winds near 95 mph.
Sources: FEMA National Risk Index (December 2025), OpenFEMA Disaster Declarations Summaries, and NFIP policy and claims data. Hazard Compass is independent and not affiliated with FEMA. These figures describe the whole county, not a single property, and are not insurance or safety advice. Report a problem.