Enter any address in Grady County, Oklahoma to see its FEMA flood zone
Flash flooding from severe thunderstorms is the primary flood hazard in Grady County. Recent events include flash flooding on May 25, 2025, and November 2, 2024, which brought widespread severe weather and flooding to the region.
National Flood Insurance Program (NFIP) data shows that Zone A, typically areas with higher flood risk, has had the most claims. However, Zone X and Zone X_UNSHADED areas have also experienced claims with significant water depths and payouts. Homeowners in Zone A, as well as those in Zone X_SHADED which has seen deep water, should pay particular attention to their flood risk.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
9 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Grady County, Oklahoma has recorded 41 flood-related events since 1996 according to NOAA's Storm Events Database, including 38 flash floods and 3 river or area floods. The county has received 37 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 (1983–2025)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Norge Fire | Fire | Mar 14, 2025 |
| 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, Straight-line Winds, Tornadoes, And Flooding | Severe Storm | May 7, 2019 |
| Severe Storms And Flooding | Flood | Jun 11, 2016 |
| Severe Winter Storms And Flooding | Severe Storm | Dec 26, 2015 |
| Severe Winter Storms And Flooding | Severe Ice Storm | Nov 27, 2015 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flash Flood | Apr 30, 2025 | 0.00K |
| Flash Flood | May 25, 2025 | 25.00K |
| Flood | May 1, 2025 | 50.00K |
| Flash Flood | Nov 2, 2024 | 0.00K |
| Flash Flood | Jun 8, 2022 | 0.00K |
| Flash Flood | May 28, 2019 | 0.00K |
| Flash Flood | May 15, 2018 | 0.00K |
| Flash Flood | Jun 7, 2018 | 10.00K |
| Flash Flood | May 2, 2018 | 0.00K |
| Flash Flood | Oct 21, 2017 | 0.00K |
Flash Flood — Apr 30, 2025
Multiple rounds of severe convection and flooding occurred from the predawn hours of the 29th into morning hours of the 30th. The most significant round of severe thunderstorm activity occurred across portions of western-north Texas on the evening of the 29th, where intense supercell thunderstorms produced very large hail, damaging wind gusts and a pair of significant (EF-2+) tornadoes. Signifi...
Flash Flood — May 25, 2025
This episode once again featured widespread severe convection across the central and southern extents of the WFO Norman Forecast Area from the afternoon of the 25th into early morning of the 26th. The background synoptic regime featured generally weak flow, with evidence of multiple weak embedded upper systems from northern Mexico into portions of the south-central United States. A persistent p...
Flood — May 1, 2025
Very heavy rainfall during the latter portions of April 2025 resulted in prolonged river flooding across portions of central and southern Oklahoma during the first days of May 2025.
Flash Flood — Nov 2, 2024
An expansive (high-amplitude) longwave trough, in combination with unseasonable moisture/instability and wind shear, yielded a prolonged period of severe weather and flooding across the southern two-thirds of Oklahoma and portions of western-north Texas. While thunderstorms began during the daytime on the 2nd, the episode's first (and most impactful) convective period occurred during the late e...
Flash 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.
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 Grady 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 Grady 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.