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Risk: Relatively Low

Custer County, OK Environment & Hazard Risk

Relatively Low natural hazard risk, led by ice storm. 865 storm events since 1996.

Expected yearly loss
$18.8M
Relatively Low nationally
Storm events since 1996
865
Most often thunderstorm wind
Flood insurance policies
10
0.1% of homes
Hurricanes nearby
0
1 tropical storm or stronger since 2007

Natural hazard risk

FEMA National Risk Index, December 2025

Overall risk

Relatively Low

Score 62.0 of 100

Social vulnerability

Relatively High

Score 62.3 of 100

Community resilience

Relatively Moderate

Score 42.0 of 100

Community resilience runs the other way: a higher rating means a community can recover faster.

Building value exposed: $6.2B · Agriculture value exposed: $135M · Risk-adjusted yearly loss: $23.5M

Risk by hazard

  • Ice stormVery High$1.8M/yr expected annual loss, about 1.2 events a year
  • TornadoRelatively High$6.7M/yr expected annual loss, about once every 1 year
  • HailRelatively Moderate$1.2M/yr expected annual loss, about 8.7 events a year
  • DroughtRelatively Moderate$1.1M/yr expected annual loss, about 82 events a year
  • Strong windRelatively Moderate$1.1M/yr expected annual loss, about 4.2 events a year
  • WildfireRelatively Low$256K/yr expected annual loss, about once every 293 years
  • Winter weatherRelatively Moderate$130K/yr expected annual loss, about 9.1 events a year
  • Cold waveRelatively Moderate$1.8M/yr expected annual loss, about 2.4 events a year
  • Heat waveRelatively Low$517K/yr expected annual loss, about 7.5 events a year
  • LandslideVery Low$2,007/yr expected annual loss, about once every 4 years
  • EarthquakeVery Low$272K/yr expected annual loss, about once every 873 years
  • HurricaneVery Low$7,057/yr expected annual loss, about once every 174 years
  • LightningVery Low$40.6K/yr expected annual loss, about 49 events a year

Bars show the national percentile score (0 to 100) for each hazard. Dollar figures are expected annual losses to buildings, people and crops. Not rated here: avalanche, coastal flooding, riverine flooding, tsunami, volcanic activity.

Flood risk and insurance

National Flood Insurance Program and FEMA flood maps

Check the flood zone for an address

Homes with flood insurance
10 of 10,807 (0.1%)
Homes in high-risk flood zones
100
Insured in high-risk zones
4 (4%)
Flood claims since 1978
19
Claims paid since 1978
$184K

Flood claims paid per year

Flood claims paid per year in Custer County
Beta

Storm history

Since 1996: 865 events, 2 deaths, $39M in damage

  • Thunderstorm Wind253
  • Hail231
  • Drought120
  • High Wind60
  • Heat48
  • Tornado31
  • Flash Flood20
  • Heavy Snow18
  • Winter Weather14 · 1 death
  • Ice Storm12 · 1 death
Beta

Events per year

Storm events per year in Custer County
20
24
36
11
32
27
41
19
24
22
22
19
37
20
15
39
42
60
40
39
Beta

73 tornadoes on record (EF0 8, EF1 7, EF2 2, F0 24, F1 13, F2 7, F3 4, F4 1).

Most damaging storms

Since 1996, ranked by deaths, injuries and damage

  • Ice Storm01/30/2002

    Custer

    $25M damage

    What happened

    Freezing rain began across the northwest third of the state during the evening of the 29th with significant accumulations of ice developing shortly after midnight on the 30th. Freezing rain shifted southward during the early morning of the 30th with moderate to occasionally heavy freezing rain occurring in a 50 to 60 mile wide band, extending from north central Oklahoma, near Ponca City and Perry, southwestward toward Enid, Kingfisher, Oklahoma City, Weatherford, Anadarko, and Hobart. In many areas, the freezing rain continued for 12 to 24 hours, with ice accumulations of 1 to 2 inches commonly observed. As the end of the storm neared, freezing rain transitioned to sleet and snow across Harper, Ellis, Woods, and Woodward Counties, with only a brief transition to sleet across central Oklahoma, including areas along and near Interstate 35. The worst damage resulting from ice accumulations occurred from near Ponca City, Blackwell, Red Rock, Perry, and Stillwater, southwestward through Enid, Canton, Watonga, Hennessey, Kingfisher, and Guthrie, to near Clinton, Weatherford, El Reno, northwest side of Oklahoma City, Edmond, Cordell, Binger, and Minco. The damage was catastrophic in...

  • Winter Weather02/02/2023

    Custer

    1 death, 1 injured

    What happened

    Light freezing rain/drizzle created hazardous travel throughout the county. A multi-vehicle accident early on the morning of the 2nd lead to the fatality of a motorist and left another seriously injured. This accident occurred on Interstate 40 about 5 miles east of Clinton, OK.

  • Ice Storm01/14/2017

    Custer

    1 death, $58K damage

    What happened

    Slick roads resulted in a car wreck including one fatality and a multi-car pileup. Additionally, electric co-ops reported over 900 outages with an estimated $28K worth of damages.

  • Drought08/01/2000

    Custer

    $8.3M damage

    What happened

    An extended period of unusually dry weather began in early August and lasted for 2 months. Many parts of the state did not receive rain in August, with portions of southwest and south central Oklahoma remaining dry for almost 90 days, starting in June. Due largely to Oklahoma's major crops of wheat, cotton, and peanuts, which greatly suffered, total agricultural losses were estimated between 600 million and 1 billion dollars statewide. Seven Oklahoma counties near the Texas border, including Carter, Comanche, Cotton, Jefferson, Love, Marshall, and Tillman, were declared federal disaster areas. Reservior levels were also low across southwest and south central Oklahoma, averaging 50 percent of normal.

  • High Wind05/04/1999

    Custer

    3 injured, $15K damage

    What happened

    High winds, not associated with a thunderstorm, blew a trailer over on Interstate 40 just west of Clinton. Three persons in the trailer were injured.

  • High Wind54 kt wind08/11/2004

    Custer

    2 injured, $5,000 damage

    What happened

    Strong sustained winds of 40 to 50 mph behind an area of thunderstorms occurred in west central and southwest Oklahoma. Wind gusts between 55 and 62 mph were measured in this area. The highest gust of 62 mph was measured by the Oklahoma mesonet station located 4 miles WNW of Bessie in Washita County at 0445 CST. Large tree limbs were downed in Elk City in Beckham County. Two people were also injured on Interstate 40, southeast of Elk City, when the high winds overturned the tractor trailer they were in.

Drinking water

11 community water systems serve about 23,986 people. Violations since 2021.

4 systems had health-based violations, such as a contaminant over the legal limit or a missed treatment step. 5 systems had a violation of any kind still open at last report.

  • WeatherfordServes 10,833 · Groundwater · Local governmentNo health violations+6 monitoring or reporting
  • ClintonServes 8,883 · Surface water · Local government5 health violations+53 monitoring or reporting
  • ThomasServes 1,238 · Groundwater · PrivateNo health violations
  • Custer County Rwd #3Serves 960 · Groundwater · Local government1 health violation+2 monitoring or reporting
  • ArapahoServes 748 · Purchased surface water · Local governmentNo health violations+12 monitoring or reporting
  • Frontier Development AuthServes 437 · Purchased surface water · Private1 health violation+7 monitoring or reporting
  • Custer City PwsServes 393 · Groundwater · Local governmentNo health violations
  • ButlerServes 345 · Purchased surface water · Local governmentNo health violations+8 monitoring or reporting

Largest systems by population served. Monitoring and reporting violations mean required tests or notices were late or missing, not that the water was unsafe.

Pollution sites

0 Superfund sites and 6 toxic release facilities in Custer County

Superfund sites

None in this county.

Toxic release facilities

Total: 27,251 lbs in 2024, 23,134 lbs to air.

Superfund sitesToxic release facilitiesEPA inspections and enforcementAir toxics cancer risk10 historic places

Frequently asked questions

How risky is Custer County for natural disasters?
FEMA rates Custer County relatively low for overall natural hazard risk, with expected losses of $18.8M a year. The highest-rated hazards are ice storm (very high), tornado (relatively high), hail (relatively moderate).
What storms are most common in Custer County?
Since 1996, NOAA recorded 865 storm events affecting Custer County, most often thunderstorm wind (253), hail (231), drought (120).
How many tornadoes have hit Custer County?
73 tornadoes have been recorded in Custer County since 1950, including 5 rated F3/EF3 or stronger.
How many homes in Custer County have flood insurance?
10 residential flood insurance policies are in force in Custer County, covering about 0.1% of homes. The program has paid $184K on 19 claims here since 1978.
What is the weather like in Custer County?
At Clinton, average highs reach 95°F in Jul and lows fall to 25°F in Jan, with 31.0 inches of rain a year (1991-2020 normals).

Source: FEMA (National Risk Index, NFIP), NOAA (Storm Events, HURDAT2, Climate Normals), EPA · Last updated 08/01/2026 · Storm counts include events in forecast zones that touch the county. This product uses the FEMA OpenFEMA API, but is not endorsed by FEMA.

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