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Carroll County, Maryland

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

Relatively Low overall risk
13th of 24highest risk in Maryland
$32Mexpected losses a year
17federal declarations
1 in 333homes with flood insurance
Photo: U.S. Geological Survey, public domain

Carroll County, Maryland has a relatively low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is higher than 60% of US counties. It ranks 13th of 24 counties in Maryland. The costliest hazards here are inland flooding, strong wind and hurricanes. FEMA estimates about $32 million a year in expected losses, or roughly $187 per resident. Since 1971 it has been included in 17 federal disaster or emergency declarations for natural events (11 major disasters). The most recent was in January 2026 (severe winter storm). Fewer than 1 in 100 homes here carry federal flood insurance (177 policies). Since 1978, federal flood insurance has paid about $1.2 million on 138 claims here.

FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.

Top risks in Carroll County

$17.7 million a yearExpected losses. Damaging events about 3 times a year.
  • 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.
$4.3 million a yearExpected losses. Damaging events about 8 times a year.
  • Secure outdoor furniture and trash bins before storms.
  • Have trees near the house checked.
$2 million a yearExpected losses. Damaging events about once every 10 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.
HazardRatingScoreExpected loss a year
Inland floodingLow66.7
$18M
Strong windHigh94.3
$4M
HurricaneLow77.0
$2M
Heat waveLow75.2
$2M
Cold waveLow43.9
$1M
TornadoLow36.4
$1M
EarthquakeLow67.6
$1M
DroughtModerate74.6
$1M
LightningModerate77.9
$1M
HailLow57.7
$538K
Winter weatherHigh85.9
$454K
Ice stormLow31.0
$52K
WildfireVery Low14.0
$7K
LandslideVery Low60.9
$4K
AvalancheVery Low8.8
$9

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 very low 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 Carroll County. 2020s bar runs to November 2026.

By type

Flood5
Hurricane5
Snowstorm4
Severe Storm2
Winter Storm1

Most recent

Jan 24, 2026Severe Winter StormEmergency
Mar 4, 2016Severe Winter Storm and SnowstormMajor disaster
Apr 10, 2014SnowstormMajor disaster
Nov 20, 2012Hurricane SandyMajor disaster
Oct 28, 2012Hurricane SandyEmergency
Aug 27, 2011Hurricane IreneEmergency
May 6, 2010Severe Winter Storms and SnowstormsMajor disaster
Sep 13, 2005Hurricane Katrina EvacuationEmergency
Sep 19, 2003Hurricane IsabelMajor disaster
Mar 14, 2003SnowEmergency
Show all 17
Jan 23, 1996Severe Storms and FloodingMajor disaster
Jan 11, 1996Blizzard of 96 (Severe Snow Storm)Major disaster
Mar 16, 1993Severe Snowfall & Winter StormEmergency
Oct 14, 1976Severe Storms & FloodingMajor disaster
Oct 4, 1975Heavy Rains & FloodingMajor disaster
Jun 23, 1972Tropical Storm AgnesMajor disaster
Aug 17, 1971Severe Storms & FloodingMajor disaster

Maryland also had 1 statewide declarations that did not name single counties.

Storm history since 1965

Tornado risk by county ›

The National Weather Service has logged 701 storm reports in Carroll County since 1965, with 3 deaths and 35 injuries and about $63.7 million in reported damage. The strongest on record here was an F3 tornado on July 19, 1996 near Gamber.

27tornadoes
75hail reports, largest 2.5 inches
430damaging thunderstorm winds
143floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Jul 19, 1996F3Gamber3 / 0
May 22, 1983F3–0 / 0
Jun 5, 2024EF2Flohrville0 / 0
Jun 5, 2024EF2Flohrville0 / 0
May 23, 1979F2–0 / 0

Most damaging storms

DateTypeNearDamage
Aug 7, 2023Thunderstorm WindCranberry Station$20M
Aug 7, 2023Thunderstorm WindMaple Grove$10M
Jul 19, 1996TornadoGamber$5M
Aug 7, 2023Thunderstorm WindUnion Mills$5M
Jun 5, 2024TornadoFlohrville$5M
Jun 5, 2024TornadoFlohrville$5M

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 1876, 2 hurricanes and 14 tropical storms have passed within 65 miles of the center of Carroll County, 6 of them since 1950. The strongest was an unnamed hurricane in 1878, with top winds near 90 mph about 40 miles away.

2hurricanes
0major hurricanes (Category 3+)
14tropical storms
2020most recent: Isaias

Strongest storms nearby

DateStormStrengthClosest
Oct 23, 1878UnnamedCategory 1, 90 mph40 mi
Oct 14, 1893UnnamedCategory 1, 75 mph55 mi
Aug 4, 2020IsaiasTropical storm, 65 mph60 mi
Sep 18, 1876UnnamedTropical storm, 65 mph45 mi
Aug 23, 1933UnnamedTropical storm, 65 mph60 mi
Aug 29, 1893UnnamedTropical storm, 65 mph46 mi

Most recent storms

DateStormStrengthClosest
Aug 4, 2020IsaiasTropical storm, 65 mph60 mi
Sep 26, 1992DanielleTropical storm, 40 mph63 mi
Sep 6, 1979DavidTropical storm, 45 mph60 mi
Aug 18, 1955DianeTropical storm, 45 mph64 mi
Aug 13, 1955ConnieTropical storm, 60 mph55 mi
Sep 1, 1952AbleTropical storm, 60 mph6 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 Carroll County

Check your address flood zone ›
0.3%of homes have federal flood insurance (177 policies)
25.8%of homes in mapped high-risk flood zones are insured
$1.2 millionpaid on 138 flood claims since 1978
1996costliest year, with $335,185 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 Carroll County

$434,000median home value (Maryland $419,900, US $332,700)
1983median year homes were built (Maryland 1979, US 1980)
44%of homes built before 1980, before many modern wind, quake and flood building rules
0.7%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; 66,768 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
Baltimore CountyModerate22
York County, PAModerate19
Howard CountyLow20
Frederick CountyLow21
Adams County, PALow18

Cities in Carroll County

Common questions about Carroll County

What is the biggest natural hazard in Carroll County?

Inland flooding has the highest expected yearly losses in Carroll County, about $17.7 million a year in FEMA's estimate. Strong wind is second at $4.3 million.

How many federal disasters has Carroll County had?

Carroll County has been included in 17 federal disaster or emergency declarations for natural events since 1971, including 11 major disasters. The most recent was Severe Winter Storm in January 2026.

Is Carroll County a high-risk place to live?

Its overall rating is Relatively Low, 13th 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 Carroll County?

Standard home insurance does not cover flooding. About 1 in 333 homes in Carroll 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 Carroll County had?

NOAA records list 27 tornadoes in Carroll County since 1950. The strongest was an F3 tornado on July 19, 1996 near Gamber. The weather service has also logged 75 hail reports and 143 floods here.

How many hurricanes have hit Carroll County?

NOAA's hurricane records show 2 hurricanes and 14 tropical storms passing within 65 miles of the center of Carroll County. The strongest was an unnamed hurricane in 1878, with winds near 90 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.