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Washington County, Maryland

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

Relatively Low overall risk
9th of 24highest risk in Maryland
$27Mexpected losses a year
15federal declarations
1 in 200homes with flood insurance
Photo: U.S. Geological Survey, public domain

Washington County, Maryland has a relatively low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is higher than 69% of US counties. It ranks 9th of 24 counties in Maryland. The costliest hazards here are inland flooding, hurricanes and tornadoes. FEMA estimates about $27 million a year in expected losses, or roughly $174 per resident. Since 1972 it has been included in 15 federal disaster or emergency declarations for natural events (9 major disasters). The most recent was in January 2026 (severe winter storm). Fewer than 1 in 100 homes here carry federal flood insurance (280 policies). Since 1978, federal flood insurance has paid about $3.9 million on 370 claims here, including $2.3 million for floods in 1996.

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

Top risks in Washington County

$14.5 million a yearExpected losses. Damaging events about 2 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.

Hurricane

Moderate
$4.1 million a yearExpected losses. Damaging events about once every 15 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.
$1.8 million a yearExpected losses. Damaging events about once every 4 years.
  • Pick a shelter spot: a basement, or an inside room on the lowest floor with no windows.
  • Turn on emergency alerts on your phone and keep a weather radio.
HazardRatingScoreExpected loss a year
Inland floodingModerate73.1
$14M
HurricaneModerate85.7
$4M
TornadoLow62.0
$2M
Heat waveModerate79.2
$1M
DroughtModerate85.8
$1M
EarthquakeLow76.5
$1M
Strong windModerate67.9
$881K
LightningModerate70.6
$491K
HailLow66.9
$473K
Cold waveLow32.8
$465K
Winter weatherModerate81.2
$217K
Ice stormLow30.7
$32K
WildfireVery Low38.2
$22K
LandslideLow79.5
$15K
AvalancheVery Low34.1
$139

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 moderate and community resilience is relatively high in FEMA's measures.

Federal disaster history

Recent disasters nationwide ›

Declarations by decade

Federal declarations for natural events that included Washington County. 2020s bar runs to November 2026.

By type

Hurricane5
Snowstorm4
Flood3
Severe Storm2
Winter Storm1

Most recent

Jan 24, 2026Severe Winter StormEmergency
Jun 25, 2018Severe Storms and FloodingMajor disaster
Mar 4, 2016Severe Winter Storm and SnowstormMajor 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 15
Jan 23, 1996Severe Storms and FloodingMajor disaster
Jan 11, 1996Blizzard of 96 (Severe Snow Storm)Major disaster
Mar 16, 1993Severe Snowfall & Winter StormEmergency
Oct 4, 1975Heavy Rains & FloodingMajor disaster
Jun 23, 1972Tropical Storm AgnesMajor disaster

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

Storm history since 1956

Tornado risk by county ›

The National Weather Service has logged 672 storm reports in Washington County since 1956, with 0 deaths and 4 injuries and about $12.6 million in reported damage. The strongest on record here was an F2 tornado on July 19, 1996 near Yarrowsburg.

15tornadoes
114hail reports, largest 4 inches
415damaging thunderstorm winds
105floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Jul 19, 1996F2Yarrowsburg0 / 0
May 17, 2011EF1Maugansville0 / 0
May 25, 2004F1Leitersburg0 / 0
Jun 16, 1998F1Halfway1 / 0
Jun 16, 1998F1Halfway0 / 0

Most damaging storms

DateTypeNearDamage
May 15, 2018Flash FloodGapland$5M
Jan 19, 1996Flash FloodAll$1M
Jun 18, 1996Flash FloodE Portion$1M
Jun 4, 2008Thunderstorm WindSharpsburg$500K
Apr 19, 2025Thunderstorm WindClear Spg$500K
Jul 19, 1996TornadoYarrowsburg$475K

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 12 tropical storms have passed within 65 miles of the center of Washington County, 4 of them since 1950. The strongest was an unnamed hurricane in 1878, with top winds near 90 mph about 53 miles away.

2hurricanes
0major hurricanes (Category 3+)
12tropical storms
1979most recent: David

Strongest storms nearby

DateStormStrengthClosest
Oct 23, 1878UnnamedCategory 1, 90 mph53 mi
Oct 13, 1893UnnamedCategory 1, 75 mph64 mi
Sep 18, 1876UnnamedTropical storm, 65 mph39 mi
Aug 29, 1893UnnamedTropical storm, 65 mph62 mi
Aug 24, 1933UnnamedTropical storm, 60 mph53 mi
Sep 1, 1952AbleTropical storm, 60 mph39 mi

Most recent storms

DateStormStrengthClosest
Sep 6, 1979DavidTropical storm, 45 mph65 mi
Aug 18, 1955DianeTropical storm, 45 mph58 mi
Aug 13, 1955ConnieTropical storm, 55 mph61 mi
Sep 1, 1952AbleTropical storm, 60 mph39 mi
Aug 29, 1949UnnamedTropical storm, 60 mph44 mi
Oct 1, 1943UnnamedTropical storm, 45 mph59 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 Washington County

Check your address flood zone ›
0.5%of homes have federal flood insurance (280 policies)
43.7%of homes in mapped high-risk flood zones are insured
$3.9 millionpaid on 370 flood claims since 1978
1996costliest year, with $2.3 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 Washington County

$296,100median home value (Maryland $419,900, US $332,700)
1974median year homes were built (Maryland 1979, US 1980)
57%of homes built before 1980, before many modern wind, quake and flood building rules
2.3%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; 64,145 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
Loudoun County, VALow14
Frederick CountyLow21
Franklin County, PALow18
Berkeley County, WVLow16
Allegany CountyLow15
Jefferson County, WVLow17
Morgan County, WVVery Low15
Fulton County, PAVery Low15

Cities in Washington County

Common questions about Washington County

What is the biggest natural hazard in Washington County?

Inland flooding has the highest expected yearly losses in Washington County, about $14.5 million a year in FEMA's estimate. Hurricane is second at $4.1 million.

How many federal disasters has Washington County had?

Washington County has been included in 15 federal disaster or emergency declarations for natural events since 1972, including 9 major disasters. The most recent was Severe Winter Storm in January 2026.

Is Washington County a high-risk place to live?

Its overall rating is Relatively Low, 9th 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 Washington County?

Standard home insurance does not cover flooding. About 1 in 200 homes in Washington 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 Washington County had?

NOAA records list 15 tornadoes in Washington County since 1950. The strongest was an F2 tornado on July 19, 1996 near Yarrowsburg. The weather service has also logged 114 hail reports and 105 floods here.

How many hurricanes have hit Washington County?

NOAA's hurricane records show 2 hurricanes and 12 tropical storms passing within 65 miles of the center of Washington 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.