FEMA flood zones · Mississippi

Warren County, Mississippi Flood Zone Map

2,690 flood insurance claims·$34.9M paid·8 federal flood & hurricane disasters

53% of Warren County’s area is in FEMA’s high-risk flood zones, and another 1% in shaded X (mostly the 0.2% floodplain and areas behind levees).

Share of the whole county outline, rivers and lakes included; parts FEMA hasn’t mapped count as zero.

Coastal high risk (V, VE)FloodwayHigh risk (A, AE)Moderate (X, 500-year)Minimal (X)Undetermined (D)

Shaded areas are FEMA’s mapped flood hazard zones in and around Warren County, Mississippi. Zoomed out they are simplified; at street level the map switches to FEMA’s exact layer. Tap anywhere to check that spot, or search an address above.

How Warren County floods

Flash flooding from severe storms and heavy rain dominates the flood risk in Warren County, accounting for 70 out of the 80 recorded flood events over the last 30 years, alongside impacts from tropical systems and hurricanes. Recent events illustrate this hazard, including a heavy rainfall and severe thunderstorm system that caused flash flooding on April 10, 2024, and anomalous moisture along a warm front that produced widespread flash flooding on January 14, 2020.

National Flood Insurance Program records show that flood claims have affected multiple zones across the county. Zone A properties experienced the highest impact with 2,037 claims, an average payout of $16,735, and an average recorded water depth of 9 inches. Properties categorized under Zone UNKNOWN accounted for 506 claims with an average payout of $8,680 and an average water depth of 4 inches. Meanwhile, properties in Zone X recorded 88 claims with an average payout of $25,070 and an average water depth of 17 inches, while Zone X shaded and unshaded zones logged 31 and 27 claims respectively, with average payouts of $17,413 and $16,830 and average water depths of 8 and 5 inches.

Homeowners and real estate agents in Zone A and Zone X should pay the most attention to this risk, as these areas have accumulated the highest volume of claims and significant average water depths during flood events.

Summary written from NOAA storm reports and NFIP claims for this county. Not a prediction.

Where the flood claims came from

3% of Warren County’s flood insurance claims were on properties rated outside FEMA’s high-risk zones.

2,096 NFIP claims with a recorded rated flood zone, 1978 to date. The zone is the one FEMA used to rate that policy, which may not match today’s map. Source: OpenFEMA NFIP claims.

How deep the water got

outlet80″ door12″24″36″48″60″72″84″

In flood insurance claims here that reported a flood depth, the average was 8 inches.

Drawn to scale against an 80-inch door. Even a few inches soaks flooring, the bottom of the drywall and anything plugged in near the floor.

Average of the depths reported on claims (zero and implausible values left out); FEMA’s record doesn’t say exactly where each depth was measured. Source: OpenFEMA NFIP claims.

Flood claims, year by year

The worst year was 1983, with 376 claims and $3.0M paid, the year of Severe Storms, Tornadoes, and Flooding.

1978: 12 claims1979: 326 claims1980: 32 claims1981: 1 claims1982: 63 claims1983: 376 claims1984: 166 claims1985: 19 claims1986: 1 claims1987: 230 claims1988: 2 claims1989: 21 claims1990: 185 claims1991: 81 claims1992: 3 claims1993: 116 claims1994: 112 claims1995: 163 claims1996: 7 claims1997: 138 claims1998: 9 claims1999: 6 claims2000: 2 claims2001: 3 claims2002: 21 claims2003: 63 claims2004: 3 claims2005: 33 claims2006: 12 claims2007: 1 claims2008: 64 claims2009: 22 claims2010: 7 claims2011: 180 claims2013: 1 claims2014: 1 claims2015: 9 claims2016: 15 claims2017: 29 claims2018: 11 claims2019: 123 claims2020: 12 claims2021: 3 claims2024: 4 claims2025: 2 claims19801990200020102020

Bar height is scaled by square root so ordinary years stay visible next to the worst one. NFIP claims by year of loss. Source: OpenFEMA.

In their words

43 NOAA storm reports from Warren County describe what happened, in the words of the forecasters who covered it. Read the Mississippi flood stories →

Federal disasters

33 federal disaster declarations since 1971, 8 of them floods, coastal storms or hurricanes.

DisasterBegan
Severe Winter StormJan 23, 2026
Severe Storms, Straight-line Winds, And Tornadoes.Jun 14, 2023
Hurricane IdaAug 28, 2021
Severe Winter StormsFeb 11, 2021
Hurricane DeltaOct 7, 2020
Severe Storms, Flooding, And MudslidesFeb 10, 2020
Severe Storms, Tornadoes, Straight-line Winds, And FloodingApr 13, 2019
Severe Storms, Straight-line Winds, Tornadoes, And FloodingFeb 22, 2019

Weather and water disasters only; most recent first. Source: OpenFEMA Disaster Declarations.

Recorded flood events

80 since 1996: 70 flash floods and 3 river or area floods.

EventDateDamage
Flash FloodApr 10, 2024$40,000
Tropical StormAug 30, 2021$15,000
Flash FloodApr 22, 2020$5,000
Flash FloodApr 19, 2020$6,000
Flash FloodJan 14, 2020$25,000
Flash FloodJan 14, 2020$80,000
Flash FloodAug 13, 2020$6,000
Flash FloodAug 13, 2020$12,000

— = no damage estimate in the record. Source: NOAA Storm Events Database.

From the storm reports

Flash Flood · Apr 10, 2024. A line of severe thunderstorms produced significant wind damage, heavy rain, hail, and a tornado as it crossed from Northeast Louisiana into Mississippi during the evening of April 9th. Subsequent heavy rain and storms continued into the daytime of April 10th.

Tropical Storm · Aug 30, 2021. Major hurricane Ida made landfall as a strong category four hurricane around 11:55am on August 29 near Grand Isle, LA. It then moved very slowly north through south central Louisiana and into Mississippi on August 30. It then turned northeast and moved across the Jackson metro area as a tropical storm and into northeast Mississippi as a tropical depression through the early morning of August 31. Ida brought tropic…

Flash Flood · Apr 22, 2020. An upper level storm system moved across the region overnight on April 22nd into 23rd. Abundant moisture and wind energy was in place to bring severe thunderstorms to the region. Damaging winds occurred along with some tornadoes. Flash flooding also occurred with efficient rainfall rates and heavy rainfall. As the cold front moved through the region later during the afternoon of the 23rd, a few more storms develop…

Flash Flood · Apr 19, 2020. A very unstable airmass was in place across the region as a frontal boundary was stalled across the central portions of the ArkLaMiss region. Severe thunderstorms moved across central and southern portions of the area during the afternoon and evening hours of the 19th. A supercell thunderstorm developed and moved across portions of the Pine Belt and brought a violent tornado across the region, for the second time…

National Weather Service narratives, lightly trimmed. Source: NOAA Storm Events Database.

The zones you’ll see on the map

Every colour on the map above is a place on this drawing: where the ground sits relative to the flood FEMA plans for.

Cross-section of a river floodplainDiagram: a river valley. The floodway is the channel and the land beside it; the 1%-annual-chance flood surface (the base flood elevation) covers the valley floor as zone A or AE; a narrow band higher up is shaded X, the 0.2% floodplain; higher ground is X.0.2% CHANCE A YEAR (500-YEAR)BASE FLOOD ELEVATION · 1% A YEARXAEFloodwayAEX
  1. A / AE Inside the 1%-a-year floodplain: about a 26% chance of flooding over a 30-year mortgage. AE has a mapped base flood elevation; plain A does not.
  2. Floodway The channel and the land beside it that has to be kept clear enough to carry the flood. Building here is tightly limited.
  3. X shaded The 0.2% (500-year) floodplain, plus some levee-protected and very shallow flood areas.
  4. X Outside both lines. No federal requirement to insure, which is not the same as no risk.

Every flood zone code explained →

Flood insurance in Warren County

If a building in Warren County is in a high-risk zone (A or V) and its mortgage comes from a federally regulated or insured lender, or is federally backed, flood insurance is required.

Outside those zones it is optional, and often worth having: from 2014 to 2024 nearly one-third of NFIP claims came from outside the high-risk Special Flood Hazard Area. Since Risk Rating 2.0, NFIP premiums are set for each building, so the only reliable price is a quote: FloodSmart.gov or a local agent.