Carroll County, Maryland
Natural disaster risk, federal disaster history and flood insurance facts.
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
- 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.
- Secure outdoor furniture and trash bins before storms.
- Have trees near the house checked.
- 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.
All 18 hazards
What the ratings mean ›| Hazard | Rating | Score | Expected loss a year | |
|---|---|---|---|---|
| Inland flooding | 66.7 | $18M | ||
| Strong wind | 94.3 | $4M | ||
| Hurricane | 77.0 | $2M | ||
| Heat wave | 75.2 | $2M | ||
| Cold wave | 43.9 | $1M | ||
| Tornado | 36.4 | $1M | ||
| Earthquake | 67.6 | $1M | ||
| Drought | 74.6 | $1M | ||
| Lightning | 77.9 | $1M | ||
| Hail | 57.7 | $538K | ||
| Winter weather | 85.9 | $454K | ||
| Ice storm | 31.0 | $52K | ||
| Wildfire | 14.0 | $7K | ||
| Landslide | 60.9 | $4K | ||
| Avalanche | 8.8 | $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
Most recent
Show all 17
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.
Strongest tornadoes
| Date | Strength | Near | Hurt / killed |
|---|---|---|---|
| Jul 19, 1996 | F3 | Gamber | 3 / 0 |
| May 22, 1983 | F3 | – | 0 / 0 |
| Jun 5, 2024 | EF2 | Flohrville | 0 / 0 |
| Jun 5, 2024 | EF2 | Flohrville | 0 / 0 |
| May 23, 1979 | F2 | – | 0 / 0 |
Most damaging storms
| Date | Type | Near | Damage |
|---|---|---|---|
| Aug 7, 2023 | Thunderstorm Wind | Cranberry Station | $20M |
| Aug 7, 2023 | Thunderstorm Wind | Maple Grove | $10M |
| Jul 19, 1996 | Tornado | Gamber | $5M |
| Aug 7, 2023 | Thunderstorm Wind | Union Mills | $5M |
| Jun 5, 2024 | Tornado | Flohrville | $5M |
| Jun 5, 2024 | Tornado | Flohrville | $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.
Strongest storms nearby
| Date | Storm | Strength | Closest |
|---|---|---|---|
| Oct 23, 1878 | Unnamed | Category 1, 90 mph | 40 mi |
| Oct 14, 1893 | Unnamed | Category 1, 75 mph | 55 mi |
| Aug 4, 2020 | Isaias | Tropical storm, 65 mph | 60 mi |
| Sep 18, 1876 | Unnamed | Tropical storm, 65 mph | 45 mi |
| Aug 23, 1933 | Unnamed | Tropical storm, 65 mph | 60 mi |
| Aug 29, 1893 | Unnamed | Tropical storm, 65 mph | 46 mi |
Most recent storms
| Date | Storm | Strength | Closest |
|---|---|---|---|
| Aug 4, 2020 | Isaias | Tropical storm, 65 mph | 60 mi |
| Sep 26, 1992 | Danielle | Tropical storm, 40 mph | 63 mi |
| Sep 6, 1979 | David | Tropical storm, 45 mph | 60 mi |
| Aug 18, 1955 | Diane | Tropical storm, 45 mph | 64 mi |
| Aug 13, 1955 | Connie | Tropical storm, 60 mph | 55 mi |
| Sep 1, 1952 | Able | Tropical storm, 60 mph | 6 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 ›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
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 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 |
|---|---|---|
| Baltimore County | 22 | |
| York County, PA | 19 | |
| Howard County | 20 | |
| Frederick County | 21 | |
| Adams County, PA | 18 |
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.