49 flood insurance claims·$731,085 paid·4 federal flood & hurricane disasters
Share of the whole county outline, rivers and lakes included; parts FEMA hasn’t mapped count as zero.
Shaded areas are FEMA’s mapped flood hazard zones in and around McClain County, Oklahoma. Zoomed out they are simplified; at street level the map switches to FEMA’s exact layer. Tap anywhere to check that spot, or search an address above.
Flash flooding from slow-moving convective storms and heavy rainfall dominates the flood risk in McClain County. Over a thirty-year period recorded by the NOAA Storm Events Database, the county experienced 30 flash flood events resulting in one death, compared to three standard flood events. Severe rainfall systems frequently produce localized urban and creek flooding, driven by favorable antecedent conditions and moist airmasses. For example, a complex of storms on June 8, 2022, brought heavy rainfall and large hail, while a multi-day heavy rainfall event on June 28, 2021, dropped six to eight-plus inches of rain in a swath along the I-44 corridor.
Federal insurance claims data demonstrates that properties inside designated special flood hazard areas face the most frequent impacts, though risk extends outward. Zone A accounts for 35 National Flood Insurance Program claims with an average payout of $23,457 and an average recorded water depth of three inches. Properties in Zone X also experience water damage, registering 11 claims with an average payout of $20,651 and an average recorded water depth of two inches, alongside two claims in unshaded Zone X averaging $2,913 with zero inches of recorded water depth.
Homeowners, real estate agents, and journalists should pay the closest attention to properties located within Zone A and Zone X, where historical claim volumes and average payouts indicate measurable flood exposure from heavy precipitation and overflowing creeks.
Summary written from NOAA storm reports and NFIP claims for this county. Not a prediction.
5% of McClain County’s flood insurance claims were on properties rated outside FEMA’s high-risk zones.
37 NFIP claims with a recorded rated flood zone, 1978 to date. The zone is the one FEMA used to rate that policy, which may not match today’s map. Source: OpenFEMA NFIP claims.
In flood insurance claims here that reported a flood depth, the average was 3 inches.
Drawn to scale against an 80-inch door. Even a few inches soaks flooring, the bottom of the drywall and anything plugged in near the floor.
Average of the depths reported on claims (zero and implausible values left out); FEMA’s record doesn’t say exactly where each depth was measured. Source: OpenFEMA NFIP claims.
The worst year was 2015, with 19 claims and $522,316 paid, the year of Severe Storms, Tornadoes, Straight-line Winds, and Flooding.
Bar height is scaled by square root so ordinary years stay visible next to the worst one. NFIP claims by year of loss. Source: OpenFEMA.
10 NOAA storm reports from McClain County describe what happened, in the words of the forecasters who covered it. Read the Oklahoma flood stories →
44 federal disaster declarations since 1970, 4 of them floods, coastal storms or hurricanes.
| Disaster | Began |
|---|---|
| Dibble Creek Fire | Mar 22, 2026 |
| Severe Storms, Straight-line Winds, Tornadoes, And Flooding | Apr 25, 2024 |
| Severe Storms, Straight-line Winds, And Tornadoes | Apr 19, 2023 |
| Severe Winter Storm | Feb 8, 2021 |
| Severe Winter Storms | Feb 8, 2021 |
| Severe Winter Storm | Oct 26, 2020 |
| Severe Storms, Tornadoes, Straight-line Winds, And Flooding | May 5, 2015 |
| Severe Storms, Tornadoes, And Flooding | May 18, 2013 |
Weather and water disasters only; most recent first. Source: OpenFEMA Disaster Declarations.
33 since 1996: 30 flash floods and 3 river or area floods.
| Event | Date | Damage |
|---|---|---|
| Flash Flood | Apr 26, 2025 | — |
| Flood | Jul 11, 2023 | — |
| Flood | Jun 8, 2022 | — |
| Flash Flood | Jun 28, 2021 | — |
| Flash Flood | Mar 19, 2020 | — |
| Flash Flood | Jun 9, 2019 | — |
| Flash Flood | Sep 21, 2018 | — |
| Flash Flood | Aug 31, 2016 | — |
— = no damage estimate in the record. Source: NOAA Storm Events Database.
Flash Flood · Apr 26, 2025. A slow-moving mesoscale convective vortex (MCV) produced severe weather and flash flooding during the morning and afternoon of the 26th. An initial complex of thunderstorms across southwestern Oklahoma and western-north Texas produced reports of thunderstorm wind damage and large hail, especially with a supercell thunderstorm that moved near the city of Lawton. Areas of persistent heavy rainfall also led to flash…
Flood · Jul 11, 2023. Numerous severe thunderstorms developed amidst an increasing low-level jet/isentropic ascent regime during the early morning hours of the 11th. Sufficient wind shear and instability allowed for organized modes (both cells and small lines) from west-central into southeastern Oklahoma. The strongest storms produced reports of wind damage and large hail. Given favorable antecedent conditions for flash flooding, a few…
Flood · Jun 8, 2022. A complex of storms moved into western Oklahoma from the Texas panhandle during the early morning hours of the 8th, with reports of large hail and severe wind gusts received.
Flash Flood · Jun 28, 2021. A very moist airmass and slow moving storms led to a multi-day heavy rainfall event for much of the area. 6 to 8+ inches fell in a swath from southwest OK northeast along the I-44 corridor. Several storms also produced isolated severe weather with hail and strong winds reported.
National Weather Service narratives, lightly trimmed. Source: NOAA Storm Events Database.
Every colour on the map above is a place on this drawing: where the ground sits relative to the flood FEMA plans for.
If a building in McClain County is in a high-risk zone (A or V) and its mortgage comes from a federally regulated or insured lender, or is federally backed, flood insurance is required.
Outside those zones it is optional, and often worth having: from 2014 to 2024 nearly one-third of NFIP claims came from outside the high-risk Special Flood Hazard Area. Since Risk Rating 2.0, NFIP premiums are set for each building, so the only reliable price is a quote: FloodSmart.gov or a local agent.