Grenada County, MS Environment & Hazard Risk
Relatively Low natural hazard risk, led by earthquake. 399 storm events since 1996.
- Expected yearly loss
- $11.9M
- Very Low nationally
- Storm events since 1996
- 399
- Most often thunderstorm wind
- Flood insurance policies
- 155
- 1.7% of homes
- Hurricanes nearby
- 0
- 9 tropical storms or stronger since 1860
Natural hazard risk
FEMA National Risk Index, December 2025
Overall risk
Relatively Low
Score 55.4 of 100
Social vulnerability
Very High
Score 96.2 of 100
Community resilience
Relatively High
Score 68.1 of 100
Community resilience runs the other way: a higher rating means a community can recover faster.
Building value exposed: $4.4B · Agriculture value exposed: $15.1M · Risk-adjusted yearly loss: $19.2M
Risk by hazard
- EarthquakeRelatively Low$1.4M/yr expected annual loss, about once every 293 years
- TornadoRelatively Moderate$2M/yr expected annual loss, about once every 3 years
- LightningRelatively Moderate$361K/yr expected annual loss, about 65 events a year
- LandslideRelatively Low$3,910/yr expected annual loss, about once every 2 years
- HailRelatively Low$351K/yr expected annual loss, about 3.0 events a year
- Heat waveRelatively Low$558K/yr expected annual loss, about 15 events a year
- Strong windRelatively Moderate$505K/yr expected annual loss, about 2.0 events a year
- HurricaneRelatively Low$145K/yr expected annual loss, about once every 16 years
- Cold waveRelatively Low$855K/yr expected annual loss, about 1.2 events a year
- Ice stormRelatively Low$71.5K/yr expected annual loss, about once every 1 year
- WildfireVery Low$29K/yr expected annual loss, about once every 937 years
- DroughtRelatively Low$87.2K/yr expected annual loss, about 14 events a year
- Winter weatherVery Low$3,848/yr expected annual loss, about 3.2 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
- 155 of 9,229 (1.7%)
- Homes in high-risk flood zones
- 885
- Insured in high-risk zones
- 146 (17%)
- Flood claims since 1978
- 320
- Claims paid since 1978
- $3.7M
Flood claims paid per year
- Flooding$105K · 30 claims
- Hurricane Katrina$22.9K · 3 claims
- Tropical Storm Isidore$4,713 · 2 claims
Storm history
Since 1996: 399 events, 2 deaths, $27.7M in damage
- Thunderstorm Wind198
- Flash Flood67
- Hail60
- Drought17
- Heavy Snow8
- Tornado8
- Strong Wind8
- Winter Weather5 · 1 death
- Lightning4
- Heat4
Events per year
21 tornadoes on record (EF1 3, EF2 1, F0 3, F1 5, F2 6, F3 2, F4 1).
Most damaging storms
Since 1996, ranked by deaths, injuries and damage
- Hurricane (Typhoon)08/29/2005
Grenada
4 injured, $11M damage
What happened
Hurricane Katrina will likely go down as the worst and costliest natural disaster in United States history. The amount of destruction, the cost of damaged property/agriculture and the large loss of life across the affected region has been overwhelming. Catastrophic damage was widespread across a large portion of the Gulf Coast region. The devastation was not only confined to the coastal region, widespread and significant damage occurred well inland up to the Hattiesburg area and northward past Interstate 20. This hurricane has changed life as we know it across the Gulf Coast region which will take many years to return to normal.Hurricane Katrina was a very large and powerful storm which set several unfortunate records. This storm began as Tropical Depression 12 during the late afternoon and evening of August 23rd. The storm slowly moved northwest, became more organized, and was upgraded to Tropical Storm during the late morning of August 24th as it moved across the Central Bahamas. The Tropical Storm continued to become better organized as it moved slowly west toward Southern Florida. Katrina became a Category 1 Hurricane late in the afternoon on August 25th just before moving...
- Winter Weather01/25/2008
Grenada
1 death, 2 injured, $200K damage
What happened
Light icing across the county caused many accidents due to a glaze on area roads. One accident caused a fatality and two injuries.
- Cold/Wind Chill01/30/2026
Grenada
1 death
What happened
Wind chills across the county remained near or below freezing through the day on January 30th. A 69 year old male died of a house fire during this cold event.
- Thunderstorm Wind12/10/1999
Grenada, Grenada County
5 injured, $25K damage
What happened
A business received major roof damage and five employees sustained injuries. Several tractor-trailers were blown over.
- TornadoEF2, 12.11 mi path, 1,200 yd wide03/15/2025
Elliott, Grenada County
3 injured
What happened
An EF-2 tornado started in Carroll County near County Road 121 and damaged a few softwood trees, then continued northeast across County Road 100 where more intense tree damage occurred. Trees were snapped, and the roof of a home was damaged. The tornado continued northeast across County Road 90 and County Road 16 and snapped more trees along the way. As the tornado approached MS Highway 17, a notable change occurred. Intensity increased, and the tornado grew in size. Additionally, just to the northwest of the path, multiple downed trees were noted along County Road 92 and 93. Here, a surge in the RFD evolved and aided in the growth and intensification of the tornado. The tornado crossed Highway 17 where it snapped power poles and numerous trees along with damage to a roof of a home. The tornado then crossed County Road 94 and I-55 and snapped power poles and numerous trees. A large tractor shed was destroyed, and extensive tree damage occurred. A truck was also thrown 30 yards and left under trees. A tractor trailer on I-55 was overturned. The tornado continued into Montgomery County near Wilkins Chapel Road and damaged the roof of a home along Sayles Road along with numerous...
- Ice Storm12/23/1998
Grenada
$2.5M damage
What happened
A crippling ice storm struck the three state region of Arkansas, Louisiana, and Mississippi at one of the worst times, just before Christmas. Much of the fall and early winter season of late 1998 had been very mild for southerners. But on Tuesday December 22nd, a strong surge of shallow Arctic air drove southward and spelled a quick end to the unseasonable warmth and helped set the stage for one of winter's nasty tricks. A moist southwest flow above the cold air brought several upper level disturbances. This combination of cold air and moisture held together for several days and brought periods of freezing rain and sleet to the three state region, beginning tuesday night and not ending until Christmas morning. Up to 2 inches of ice accumulated on power lines and much of the area experienced long power outages, nearly seven days in some cases. Hardest hit was an area from northeast Louisiana to north central Mississippi where tree and power line damage was moderate to severe. The prior warmth had left most trees with a little more foliage than usual and greater potential for ice accumulation. The extra weight was more than many trees could handle and quite a few large oaks...
Drinking water
10 community water systems serve about 30,575 people. Violations since 2021.
1 system had health-based violations, such as a contaminant over the legal limit or a missed treatment step. 1 system had a violation of any kind still open at last report.
- City of GrenadaServes 12,762 · Groundwater · Local governmentNo health violations
- G T & Y Water District INCServes 3,907 · Groundwater · Local governmentNo health violations+2 monitoring or reporting
- Poor House W/A #1Serves 2,806 · Groundwater · Public and private1 health violation+9 monitoring or reporting
- Grenada Co W/S-Girl ScoutServes 2,410 · Groundwater · Local governmentNo health violations+4 monitoring or reporting
- Grenada Ind Pk & Airport WaterServes 1,991 · Groundwater · Local governmentNo health violations+2 monitoring or reporting
- Grenada Co W/S-Mondy Rd/ElliotServes 1,964 · Groundwater · Local governmentNo health violations+2 monitoring or reporting
- Grenada-Bogue Basin/HolcombServes 1,837 · Groundwater · Local governmentNo health violations+5 monitoring or reporting
- Grenada-Bogue Basin/Gore SprgsServes 1,832 · Groundwater · Local governmentNo health violations+12 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
1 Superfund site and 8 toxic release facilities in Grenada County
Superfund sites
- Rockwell International Wheel & TrimFinalGrenada
Toxic release facilities
- Resolute FP US Inc - Grenada Mill208,775 lbs released, Grenada
- Trulite Glass & Aluminum Solutions15,743 lbs released, Grenada
- US Army National Guard Camp Mccain Ranges1,314 lbs released, Grenada
- Modine Manufacturing Co273 lbs released, Grenada
- Modine Grenada Cis165 lbs released, Grenada
- Hankins Lumber Co Inc16.4 lbs released, Elliott
- Advanced Distributor Products LLC10 lbs released, Grenada
- Thomas Wood Preserving Inc0 lbs released, Grenada
Total: 226,297 lbs in 2024, 60,924 lbs to air.
Superfund sitesToxic release facilitiesEPA inspections and enforcementAir toxics cancer risk11 historic places
Frequently asked questions
- How risky is Grenada County for natural disasters?
- FEMA rates Grenada County relatively low for overall natural hazard risk, with expected losses of $11.9M a year. The highest-rated hazards are earthquake (relatively low), tornado (relatively moderate), lightning (relatively moderate).
- What storms are most common in Grenada County?
- Since 1996, NOAA recorded 399 storm events affecting Grenada County, most often thunderstorm wind (198), flash flood (67), hail (60).
- How many tornadoes have hit Grenada County?
- 21 tornadoes have been recorded in Grenada County since 1950, including 3 rated F3/EF3 or stronger.
- How many homes in Grenada County have flood insurance?
- 155 residential flood insurance policies are in force in Grenada County, covering about 1.7% of homes. The program has paid $3.7M on 320 claims here since 1978.
- What is the weather like in Grenada County?
- At Grenada, average highs reach 92°F in Jul and lows fall to 31°F in Jan, with 61.5 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.