Enter any address in McClain County, Oklahoma to see its FEMA flood zone
Flash flooding from slow-moving storms is the dominant flood character in McClain County. Recent events include flash flooding on April 26, 2025, which resulted in one fatality, and a multi-day heavy rainfall event on June 28, 2021, that dropped 6 to 8+ inches of rain in some areas.
National Flood Insurance Program (NFIP) data shows that properties in Zone A have experienced the most claims, with an average payout of $17,701 and an average water depth of 2.1 feet. Properties in Zone X also have a history of claims, averaging $15,019 with a water depth of 0.7 feet. Homeowners in Zone A, and those in Zone X, should pay the most attention to flood risk.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
10 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
McClain County, Oklahoma has recorded 33 flood-related events since 1996 according to NOAA's Storm Events Database, including 30 flash floods and 3 river or area floods. The county has received 44 federal disaster declarations, 4 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (1970–2026)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Dibble Creek Fire | Fire | Mar 22, 2026 |
| Severe Storms, Straight-line Winds, Tornadoes, And Flooding | Tornado | Apr 25, 2024 |
| Severe Storms, Straight-line Winds, And Tornadoes | Tornado | Apr 19, 2023 |
| Severe Winter Storm | Severe Ice Storm | Feb 8, 2021 |
| Severe Winter Storms | Severe Ice Storm | Feb 8, 2021 |
| Severe Winter Storm | Severe Ice Storm | Oct 26, 2020 |
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Severe Storms, Tornadoes, Straight-line Winds, And Flooding | Severe Storm | May 5, 2015 |
| Severe Storms, Tornadoes, And Flooding | Tornado | May 18, 2013 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flash Flood | Apr 26, 2025 | 0.00K |
| Flood | Jul 11, 2023 | 0.00K |
| Flood | Jun 8, 2022 | 0.00K |
| Flash Flood | Jun 28, 2021 | 0.00K |
| Flash Flood | Mar 19, 2020 | 0.00K |
| Flash Flood | Jun 9, 2019 | 0.00K |
| Flash Flood | Sep 21, 2018 | 0.00K |
| Flash Flood | Aug 31, 2016 | 0.00K |
| Flash Flood | Apr 29, 2016 | 0.00K |
| Flash Flood | May 23, 2015 | 0.00K |
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 rainfal...
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 f...
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.
Flash Flood — Mar 19, 2020
A strong upper level wave provided lift for numerous thunderstorms to develop, with several rounds of storms leading to scattered reports of hail, wind, and flooding on the 18th into early on the 19th.
Source: NOAA National Weather Service Storm Events Database.
Source: OpenFEMA NFIP Individual Claims (2.25M records analyzed).
FEMA assigns flood zone designations to areas in McClain County, Oklahoma:
AE High Risk — 1% annual chance of flooding. Insurance required.
VE Very High Risk — Coastal flooding with wave action.
X (Shaded) Moderate Risk — 500-year floodplain.
X Low Risk — Outside major floodplains.
Properties in McClain County, Oklahoma that are in FEMA-designated Special Flood Hazard Areas (zones A and V) with federally backed mortgages are required to carry flood insurance.
Even outside high-risk zones, flood insurance is recommended. From 2014 to 2024, nearly one-third of NFIP claims came from outside the high-risk Special Flood Hazard Area.
Visit FloodSmart.gov to find an agent and get a quote.