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Dorchester County, Maryland

Natural disaster risk, federal disaster history and flood insurance facts.

Relatively Low overall risk
16th of 24highest risk in Maryland
$16Mexpected losses a year
18federal declarations
1 in 11homes with flood insurance
Photo: Coast Guard News, CC BY 2.0

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

$5.8 million a yearExpected losses. Damaging events about 4 times a year.
  • 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.

Hurricane

Moderate
$3.5 million a yearExpected losses. Damaging events about once every 6 years.
  • 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.
$2.3 million a yearExpected losses. Damaging events about once every 1 years.
  • 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.
HazardRatingScoreExpected loss a year
Coastal floodingHigh91.2
$6M
HurricaneModerate85.4
$3M
Inland floodingVery Low21.6
$2M
DroughtModerate81.2
$887K
Cold waveLow44.8
$687K
Heat waveLow63.0
$587K
WildfireLow83.2
$517K
TornadoLow31.0
$477K
Strong windLow44.1
$409K
EarthquakeVery Low53.4
$289K
LightningLow37.0
$126K
Ice stormLow45.7
$62K
Winter weatherLow44.9
$48K
HailVery Low8.4
$22K
LandslideVery Low10.7
$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

Hurricane7
Snowstorm5
Severe Storm3
Flood1
Tornado1
Winter Storm1

Most recent

Jan 24, 2026Severe Winter StormEmergency
Feb 4, 2021Tropical Storm IsaiasMajor disaster
Nov 20, 2012Hurricane SandyMajor disaster
Oct 28, 2012Hurricane SandyEmergency
Sep 16, 2011Hurricane IreneMajor disaster
Aug 27, 2011Hurricane IreneEmergency
May 6, 2010Severe Winter Storms and SnowstormsMajor disaster
Jul 2, 2006Severe Storms, Flooding, and TornadoesMajor disaster
Sep 13, 2005Hurricane Katrina EvacuationEmergency
Sep 19, 2003Hurricane IsabelMajor disaster
Show all 18
Mar 14, 2003SnowEmergency
May 1, 2002TornadoMajor disaster
Apr 10, 2000Severe Winter StormMajor disaster
Jan 11, 1996Blizzard of 96 (Severe Snow Storm)Major disaster
Mar 16, 1994Severe Winter Weather and Ice StormsMajor disaster
Mar 16, 1993Severe Snowfall & Winter StormEmergency
Jan 26, 1977Ice ConditionsMajor disaster
Jun 23, 1972Tropical Storm AgnesMajor disaster

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.

15tornadoes
40hail reports, largest 2.5 inches
153damaging thunderstorm winds
31floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Apr 28, 2002F3Taylors Is0 / 0
May 8, 1984F1–6 / 1
May 8, 1984F1–8 / 0
Oct 14, 2003F1Cambridge0 / 0
May 16, 2025EF1Rhodesdale0 / 0

Most damaging storms

DateTypeNearDamage
May 8, 1984Tornado–$3M
May 8, 1984Tornado–$3M
Feb 24, 2012Thunderstorm WindCambridge$1M
Oct 14, 2003TornadoCambridge$500K
May 13, 2000Thunderstorm WindCambridge$300K
Apr 28, 2002TornadoTaylors 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.

3hurricanes
0major hurricanes (Category 3+)
28tropical storms
2021most recent: Elsa

Strongest storms nearby

DateStormStrengthClosest
Oct 23, 1878UnnamedCategory 1, 95 mph61 mi
Oct 10, 1894UnnamedCategory 1, 80 mph62 mi
Aug 28, 2011IreneCategory 1, 75 mph64 mi
Sep 16, 1999FloydTropical storm, 70 mph62 mi
Aug 23, 1933UnnamedTropical storm, 70 mph61 mi
Aug 4, 2020IsaiasTropical storm, 70 mph65 mi

Most recent storms

DateStormStrengthClosest
Jul 9, 2021ElsaTropical storm, 60 mph30 mi
Aug 4, 2020IsaiasTropical storm, 70 mph65 mi
Aug 28, 2011IreneCategory 1, 75 mph64 mi
Sep 6, 2008HannaTropical storm, 50 mph56 mi
Aug 31, 2004GastonTropical storm, 40 mph64 mi
Sep 16, 1999FloydTropical storm, 70 mph62 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 ›
8.8%of homes have federal flood insurance (1,382 policies)
48.6%of homes in mapped high-risk flood zones are insured
$21.7 millionpaid on 1,142 flood claims since 1978
2003costliest year, with $15.7 million paid

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

$262,400median home value (Maryland $419,900, US $332,700)
1975median year homes were built (Maryland 1979, US 1980)
57%of homes built before 1980, before many modern wind, quake and flood building rules
7.1%of homes are mobile homes, which are the least safe in tornadoes and high winds

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 countiesOverall riskTop hazard
Montgomery CountyModerateInland flooding
Prince George's CountyModerateInland flooding
Baltimore CountyModerateInland flooding
Anne Arundel CountyModerateInland flooding
Baltimore CityHighInland flooding
Howard CountyLowInland flooding
Frederick CountyLowInland flooding
Harford CountyLowInland flooding

Neighboring counties

CountyOverall riskDeclarations
Sussex County, DEModerate18
St. Mary's CountyVery Low16
Wicomico CountyLow12
Calvert CountyVery Low22
Talbot CountyVery Low18
Caroline CountyLow19
Somerset CountyLow12

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.