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
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
Events per year
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
- Miraclon Corp16,432 lbs released, Weatherford
- Enable Products/Clinton Natural Gas Processing Plant7,812 lbs released, Clinton
- Championx-Weatherford1,597 lbs released, Weatherford
- Mcclure Natural Gas Processing Plant1,410 lbs released, Butler
- Weatherford #2 Batch Plant0 lbs released, Weatherford
- Arapaho Gas Processing Plt0 lbs released, Butler
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.