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Risk: Relatively Low

Lamar County, MS Environment & Hazard Risk

Relatively Low natural hazard risk, led by hurricane. 576 storm events since 1996.

Expected yearly loss
$21.68M
Relatively Low nationally
Storm events since 1996
576
Most often thunderstorm wind
Flood insurance policies
251
1.2% of homes
Hurricanes nearby
1
7 tropical storms or stronger since 1886

Natural hazard risk

FEMA National Risk Index, December 2025

Overall risk

Relatively Low

Score 65.0 of 100

Social vulnerability

Relatively Moderate

Score 55.6 of 100

Community resilience

Relatively Moderate

Score 55.5 of 100

Community resilience runs the other way: a higher rating means a community can recover faster.

Building value exposed: $12.56B · Agriculture value exposed: $68.5M · Risk-adjusted yearly loss: $25.51M

Risk by hazard

  • HurricaneRelatively Moderate$5.8M/yr expected annual loss, about once every 6 years
  • WildfireRelatively Low$422K/yr expected annual loss, about once every 214 years
  • Heat waveRelatively Moderate$1.39M/yr expected annual loss, about 12 events a year
  • LightningRelatively Moderate$626K/yr expected annual loss, about 81 events a year
  • TornadoRelatively Moderate$2.59M/yr expected annual loss, about once every 2 years
  • Strong windRelatively Moderate$715K/yr expected annual loss, about 2.7 events a year
  • Ice stormRelatively Moderate$125K/yr expected annual loss, about once every 1 year
  • LandslideVery Low$2,533/yr expected annual loss, about once every 4 years
  • Winter weatherRelatively Low$68.5K/yr expected annual loss, about 1.6 events a year
  • EarthquakeVery Low$306K/yr expected annual loss, about once every 866 years
  • HailRelatively Low$276K/yr expected annual loss, about 3.5 events a year
  • Cold waveRelatively Low$729K/yr expected annual loss, about once every 1 year
  • DroughtRelatively Low$43.28K/yr expected annual loss, about 14 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
251 of 21,454 (1.2%)
Homes in high-risk flood zones
311
Insured in high-risk zones
150 (48%)
Flood claims since 1978
399
Claims paid since 1978
$5.9M

Flood claims paid per year

Flood claims paid per year in Lamar County
  • Hurricane Katrina$1.05M · 56 claims
  • Hurricane Isaac$513K · 7 claims
  • Flooding$160K · 25 claims
  • Late winter severe storms$155K · 10 claims
  • Hurricane Ida$49.06K · 3 claims
  • Tropical Storm Isidore$8,563 · 4 claims

Storm history

Since 1996: 576 events, 2 deaths, $530M in damage

  • Thunderstorm Wind260
  • Hail122
  • Flash Flood89
  • Tornado40 · 1 death
  • Lightning13 · 1 death
  • Drought10
  • Tropical Storm9
  • Heavy Snow7
  • Flood5
  • High Wind4

Events per year

Storm events per year in Lamar County
23
30
20
19
26
23
12
14
15
27
26
11
25
16
18
17
24
13
11
16

51 tornadoes on record (EF0 12, EF1 10, EF2 5, EF3 1, EF4 1, F0 6, F1 10, F2 5, F3 1).

Most damaging storms

Since 1996, ranked by deaths, injuries and damage

  • Hurricane (Typhoon)08/29/2005

    Lamar

    10 injured, $480M 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...

  • TornadoEF4, 7.55 mi path, 1,320 yd wide02/11/2013

    Oak Grove, Lamar County

    8 injured, $13.5M damage

    What happened

    The tornado started along Highway 589, where some limbs and small trees were blown down. It became intense rather quickly, producing significant damage as it moved through the West Lake Serene area. The tornado reached its maximum intensity in the area around and just southwest of Oak Grove High School where maximum winds were estimated at 170 mph, which is EF-4 strength. There was a brick home in a subdivision southwest of the high school, just west of old Highway 11, that was completely leveled with all interior and exterior walls down, and a fair amount of large debris was blown downstream. Additionally, very high end timber damage occurred in this location with a number of trees showing debarking and denuding. Several other homes in this subdivision also sustained EF-2 to EF-3 damage. As the tornado crossed old Highway 11, it produced extensive damage on the campus of Oak Grove High School. The field house adjoining the football stadium was destroyed, the baseball stadium and a large metal building adjoining the stadium were essentially destroyed, and several large steel/concrete light standards were snapped at both the baseball and football stadiums. A vehicle was thrown...

  • TornadoF1, 17 mi path, 440 yd wide03/12/2001

    Oloh, Lamar County

    7 injured, $4.5M damage

  • TornadoEF2, 5.63 mi path, 100 yd wide02/24/2016

    Baxterville, Lamar County

    1 death, $105K damage

    What happened

    The tornado began just southwest of Sones Road where it snapped a few limbs. The tornado continued northeast across Martin Bird Lane. The tornado was at its strongest at this point where it destroyed a double-wide mobile home. The debris from the mobile home was thrown nearly 125 yards from its original point. A car was also rolled approximately 75 yards. Two power poles were snapped along with a few trees at this location also. This location is where the fatality occurred. The tornado continued northeast across Beach Road where it snapped a few more trees. The tornado then continued northeast along Doc Johnson Road snapping a few trees along the way. This tornado damaged an outbuilding and also took the roof off of a chicken house along Doc Johnson Road. The tornado ended near Haden Road where it snapped a few more trees. Maximum estimated winds were 115 mph.

  • Lightning06/27/2016

    Baxterville, Lamar County

    1 death

    What happened

    A 24 year old man was struck and killed by lightning as he and another man were standing outside of a residence near a truck.

  • TornadoF3, 12.02 mi path, 500 yd wide11/15/2006

    Sumrall, Lamar County

    6 injured, $1.5M damage

    What happened

    This strong tornado touched down to the southwest of Sumrall and tracked east northeast across northern Lamar County and then into a small portion of extreme northwest Forrest County before dissipating. Approximately 25 homes were damaged, 16 of those suffering major damage or total destruction. The worst damage was along Old Salt Road, where a wood frame home on a concrete block foundation was totally destroyed, with the foundation cleared and the remnants of the home displaced dozens of yards away. A minivan was picked up and thrown/rolled a distance of approximately 150 yards, landing on top of a tractor and totally destroyed. Some large trees at this location were snapped at the base, denuded, and partially debarked. Heavy damage of F2 intensity was also observed along Foster Road, JD Hatten Road, and Rocky Branch road. Large swaths of trees were snapped and uprooted, and a few frame homes totally lost their roofs. Other damage along the path was weaker and generally of F1 intensity. The tornado then crossed Highway 42 and entered extreme northwest Forrest County. The total path length across Lamar and Forrest Counties was 13 miles.

Latest storm reports

Newest first

  • Flash Flood06/20/2026

    Talowah, Lamar County

    $1,000 damage

  • Drought05/01/2026

    Lamar

  • Hail1" hail04/27/2026

    Okahola, Lamar County

  • Hail1.25" hail04/27/2026

    Okahola, Lamar County

  • Hail1.5" hail04/27/2026

    Oak Grove, Lamar County

  • Hail1" hail04/26/2026

    Oak Grove, Lamar County

  • Hail1" hail04/25/2026

    Oak Grove, Lamar County

  • Hail1" hail04/25/2026

    Oloh, Lamar County

Hurricanes and tropical storms

Storms whose track crossed Lamar County, with the wind when it passed

Drinking water

10 community water systems serve about 65,774 people. Violations since 2021.

3 systems 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.

Largest systems by population served. Monitoring and reporting violations mean required tests or notices were late or missing, not that the water was unsafe.

Climate

1991-2020 normals at Hattiesburg 5sw, 10 mi from the county center

Summer highs peak around 91°F in Aug and winter lows bottom out near 38°F in Jan. About 64.4 inches of rain falls in a typical year, with 0.9 inches of snow.

MonthHighLowRainSnow
Jan60°F38°F6.50 in0.2 in
Feb64°F41°F5.68 in0.1 in
Mar71°F48°F5.89 in0.1 in
Apr78°F54°F5.70 in-
May84°F62°F4.53 in-
Jun90°F70°F5.26 in-
Jul91°F72°F6.44 in-
Aug91°F72°F6.26 in-
Sep88°F67°F4.82 in-
Oct79°F56°F3.54 in-
Nov69°F46°F3.85 in-
Dec62°F40°F5.97 in0.5 in
Year66°F average64.4 in0.9 in

Pollution sites

1 Superfund site and 2 toxic release facilities in Lamar County

Superfund sites

Toxic release facilities

Total: 44,991 lbs in 2024, 44,991 lbs to air.

Superfund sitesToxic release facilitiesEPA inspections and enforcementAir toxics cancer risk2 historic places

Frequently asked questions

How risky is Lamar County for natural disasters?
FEMA rates Lamar County relatively low for overall natural hazard risk, with expected losses of $21.68M a year. The highest-rated hazards are hurricane (relatively moderate), wildfire (relatively low), heat wave (relatively moderate).
What storms are most common in Lamar County?
Since 1996, NOAA recorded 576 storm events affecting Lamar County, most often thunderstorm wind (260), hail (122), flash flood (89).
How many tornadoes have hit Lamar County?
51 tornadoes have been recorded in Lamar County since 1950, including 3 rated F3/EF3 or stronger.
How many homes in Lamar County have flood insurance?
251 residential flood insurance policies are in force in Lamar County, covering about 1.2% of homes. The program has paid $5.9M on 399 claims here since 1978.
What is the weather like in Lamar County?
At Hattiesburg 5sw, average highs reach 91°F in Aug and lows fall to 38°F in Jan, with 64.4 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.