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Dauphin County, Pennsylvania

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

Relatively Moderate overall risk
11th of 67highest risk in Pennsylvania
$100Mexpected losses a year
20federal declarations
1 in 83homes with flood insurance
Photo: David Wilson, CC BY 2.0

Dauphin County, Pennsylvania has a moderate overall risk from natural hazards in FEMA's National Risk Index. Its risk score is higher than 91% of US counties. It ranks 11th of 67 counties in Pennsylvania. The costliest hazards here are inland flooding, hurricanes and tornadoes. FEMA estimates about $100 million a year in expected losses, or roughly $349 per resident. Since 1972 it has been included in 20 federal disaster or emergency declarations for natural events (15 major disasters). The most recent was in September 2021 (remnants of hurricane ida). About 1 in 83 homes here carry federal flood insurance (1,130 policies). Since 1978, federal flood insurance has paid about $86 million on 5,248 claims here, including $52 million for floods in 2011.

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

Top risks in Dauphin County

$75 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
$6.9 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.

Tornado

Moderate
$4 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 floodingHigh94.8
$75M
HurricaneModerate89.2
$7M
TornadoModerate79.8
$4M
EarthquakeLow87.3
$4M
Heat waveModerate88.4
$3M
Strong windHigh93.2
$3M
Cold waveModerate67.7
$2M
Winter weatherVery High98.2
$1M
LightningHigh88.3
$1M
DroughtLow49.3
$141K
Ice stormLow51.7
$94K
HailVery Low23.7
$89K
LandslideLow84.6
$29K
WildfireVery Low38.9
$25K
AvalancheVery Low41.1
$287

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 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 Dauphin County. 2020s bar runs to November 2026.

By type

Flood7
Hurricane5
Snowstorm4
Severe Storm4

Most recent

Sep 10, 2021Remnants of Hurricane IdaMajor disaster
Mar 23, 2016Severe Winter Storm and SnowstormMajor disaster
Jan 10, 2013Hurricane SandyMajor disaster
Oct 29, 2012Hurricane SandyEmergency
Sep 12, 2011Tropical Storm LeeMajor disaster
Sep 8, 2011Remnants of Tropical Storm LeeEmergency
Apr 16, 2010Severe Winter Storms and SnowstormsMajor disaster
Jun 30, 2006Severe Storms, Flooding, and MudslidesMajor disaster
Sep 10, 2005Hurricane KatrinaEmergency
Sep 19, 2004Tropical Depression IvanMajor disaster
Show all 20
Sep 19, 2004Severe Storms and Flooding Associated With Tropical Depression FrancesMajor disaster
Mar 14, 2003SnowEmergency
Sep 22, 1999Tropical Depression Dennis PaMajor disaster
Jan 21, 1996Severe Storms and FloodingMajor disaster
Jan 13, 1996Blizzard of 96Major disaster
Mar 10, 1994Severe Winter StormsMajor disaster
Mar 16, 1993Severe Snowfall & Winter StormEmergency
Oct 20, 1976Severe Storms & FloodingMajor disaster
Sep 26, 1975Severe Storms, Heavy Rains & FloodingMajor disaster
Jun 23, 1972Tropical Storm AgnesMajor disaster

Pennsylvania also had 7 statewide declarations that did not name single counties.

Storm history since 1950

Tornado risk by county ›

The National Weather Service has logged 577 storm reports in Dauphin County since 1950, with 6 deaths and 25 injuries and about $161 million in reported damage. The strongest on record here was an F2 tornado on April 5, 1977.

19tornadoes
90hail reports, largest 2.5 inches
405damaging thunderstorm winds
62floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Apr 5, 1977F2–1 / 0
Oct 18, 1967F2–11 / 0
Mar 26, 1970F2–0 / 0
Jul 5, 1950F2–0 / 0
Dec 1, 2006F1Halifax0 / 1

Most damaging storms

DateTypeNearDamage
Sep 7, 2011FloodDeodate$151M
Apr 5, 1977Tornado–$3M
Dec 1, 2006TornadoHalifax$2M
Jul 16, 1995Thunderstorm WindHarrisburg$1M
Jul 15, 1994Thunderstorm WindHarrisburg$500K
Jun 1, 2007Flash FloodHershey$500K

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, 1 hurricane and 13 tropical storms have passed within 65 miles of the center of Dauphin County, 5 of them since 1950. The strongest was an unnamed hurricane in 1878, with top winds near 90 mph about 41 miles away.

1hurricanes
0major hurricanes (Category 3+)
13tropical storms
1992most recent: Danielle

Strongest storms nearby

DateStormStrengthClosest
Oct 23, 1878UnnamedCategory 1, 90 mph41 mi
Oct 14, 1893UnnamedTropical storm, 70 mph59 mi
Aug 29, 1893UnnamedTropical storm, 65 mph56 mi
Sep 18, 1876UnnamedTropical storm, 60 mph64 mi
Sep 1, 1952AbleTropical storm, 60 mph48 mi
Aug 29, 1949UnnamedTropical storm, 60 mph59 mi

Most recent storms

DateStormStrengthClosest
Sep 26, 1992DanielleTropical storm, 40 mph62 mi
Sep 6, 1979DavidTropical storm, 45 mph60 mi
Aug 18, 1955DianeTropical storm, 40 mph56 mi
Aug 13, 1955ConnieTropical storm, 55 mph59 mi
Sep 1, 1952AbleTropical storm, 60 mph48 mi
Aug 29, 1949UnnamedTropical storm, 60 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 Dauphin County

Check your address flood zone ›
1.2%of homes have federal flood insurance (1,130 policies)
25.6%of homes in mapped high-risk flood zones are insured
$85.9 millionpaid on 5,248 flood claims since 1978
2011costliest year, with $51.7 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 Dauphin County

$236,400median home value (Pennsylvania $254,500, US $332,700)
1972median year homes were built (Pennsylvania 1965, US 1980)
62%of homes built before 1980, before many modern wind, quake and flood building rules
2.6%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; 127,828 housing units.

Compare in Pennsylvania

All 67 ›
Largest countiesOverall riskTop hazard
Philadelphia CountyVery HighInland flooding
Allegheny CountyHighInland flooding
Montgomery CountyHighInland flooding
Bucks CountyHighInland flooding
Delaware CountyModerateInland flooding
Lancaster CountyHighInland flooding
Chester CountyModerateInland flooding
York CountyModerateInland flooding

Neighboring counties

CountyOverall riskDeclarations
Lancaster CountyHigh20
York CountyModerate19
Cumberland CountyModerate17
Lebanon CountyLow17
Schuylkill CountyModerate22
Northumberland CountyLow17
Perry CountyLow18
Juniata CountyVery Low18

Cities in Dauphin County

Common questions about Dauphin County

What is the biggest natural hazard in Dauphin County?

Inland flooding has the highest expected yearly losses in Dauphin County, about $75 million a year in FEMA's estimate. Hurricane is second at $6.9 million.

How many federal disasters has Dauphin County had?

Dauphin County has been included in 20 federal disaster or emergency declarations for natural events since 1972, including 15 major disasters. The most recent was Remnants of Hurricane Ida in September 2021.

Is Dauphin County a high-risk place to live?

Its overall rating is Relatively Moderate, 11th highest of 67 in Pennsylvania. 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 Dauphin County?

Standard home insurance does not cover flooding. About 1 in 83 homes in Dauphin 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 Dauphin County had?

NOAA records list 19 tornadoes in Dauphin County since 1950. The strongest was an F2 tornado on April 5, 1977. The weather service has also logged 90 hail reports and 62 floods here.

How many hurricanes have hit Dauphin County?

NOAA's hurricane records show 1 hurricane and 13 tropical storms passing within 65 miles of the center of Dauphin 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.