Enter any address in San Jacinto County, Texas to see its FEMA flood zone
Flash flooding from thunderstorms is the dominant flood character in San Jacinto County. Recent events include widespread flash flooding on May 16, 2024, associated with a derecho that also produced high winds and tornadoes. Earlier, on April 29, 2024, storms brought flash flooding, tornadoes, wind damage, and hail.
National Flood Insurance Program (NFIP) data indicates that properties in Zone A have experienced the most claims, with an average payout of $20,051 and an average water depth of 3.8 feet. Properties in Zone X have also seen claims, with a higher average payout of $32,333 and an average water depth of 4.9 feet, suggesting potentially more severe flooding in some areas despite fewer claims. Homeowners in Zone A, and those in Zone X with higher average water depths, should pay particular attention to flood risk.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
13 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
San Jacinto County, Texas has recorded 53 flood-related events since 1996 according to NOAA's Storm Events Database, including 48 flash floods and 1 river or area floods. The county has received 32 federal disaster declarations, 10 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (1973–2025)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Pauline Road Fire | Fire | Mar 19, 2025 |
| Hurricane Beryl | Hurricane | Jul 5, 2024 |
| Severe Storms, Straight-line Winds, Tornadoes, And Flooding | Flood | Apr 26, 2024 |
| Severe Winter Storm | Severe Ice Storm | Feb 11, 2021 |
| Severe Winter Storms | Severe Ice Storm | Feb 11, 2021 |
| Tropical Storms Marco And Laura | Hurricane | Aug 23, 2020 |
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Tropical Storm Imelda | Flood | Sep 17, 2019 |
| Hurricane Harvey | Hurricane | Aug 23, 2017 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flash Flood | Apr 29, 2024 | 0.00K |
| Flash Flood | May 16, 2024 | 0.00K |
| Flash Flood | May 2, 2024 | 0.00K |
| Flash Flood | Oct 1, 2021 | 0.00K |
| Flash Flood | Aug 27, 2017 | 0.00K |
| Flash Flood | Aug 26, 2017 | 350.00M (3 deaths) |
| Flash Flood | Apr 30, 2016 | 0.00K |
| Flash Flood | May 25, 2015 | 0.00K |
| Flash Flood | May 11, 2015 | 0.00K |
| Flash Flood | Sep 18, 2014 | 2.00K |
Flash Flood — Apr 29, 2024
Evening through overnight storms produced a lot of flash flooding, a couple tornadoes, some winds damage and some hail.
Flash Flood — May 16, 2024
On the evening of May 16, a derecho moved into SE TX. This resulted in extensive wind damage across much of the Greater Houston area, including much of Downtown Houston. Maximum wind gusts were estimated to have reached over 100 mph. Additionally, the system produced two tornadoes and widespread flash flooding. Power outages resulting from the derecho lasted multiple days for hundreds of thousa...
Flash Flood — May 2, 2024
A series of disturbances moved across the area and produced flash flooding and severe thunderstorms.
Flash Flood — Oct 1, 2021
A cluster of showers and thunderstorms developed over SE TX during the morning of October 1, producing periods of heavy rain across the area. Heavy downpours resulted in several instances of street flooding making roads impassable.
Flash Flood — Aug 27, 2017
Harvey made landfall as a category 4 hurricane near Rockport, Texas during the evening of August 25th. The storm then weakened to a tropical storm and slowed, looping back and tracking over SE Texas then back over the Gulf of Mexico making a second landfall along the Louisiana coast during the early morning hours of August 30th. Over that 5 day period over Southeast Texas TS Harvey produced ca...
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 San Jacinto County, Texas:
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 San Jacinto County, Texas 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.