Plaquemines Parish, Louisiana

What hazards hit Plaquemines Parish most?

The most frequent records are hurricane and tropical storm records: 94 since 1997. 60% of its hurricane and tropical storm records since 1997 fell in August and September. The rank column places the county among Louisiana's counties by days with a record per 1,000 square miles of land over each hazard's complete period.

Source: NOAA NCEI Storm Events Database (county and forecast-zone records attributed to the county; a zone record shows its own totals on each county it covers). Days: dates with at least one record of the hazard in the county. Ranks: days with a record per 1,000 square miles of land (Census Bureau 2024 Gazetteer), since 1950 for tornadoes, 1955 for hail and thunderstorm wind, 1996 for the rest.

How many tornadoes has Plaquemines Parish had?

NOAA records 35 tornadoes in Plaquemines Parish from 1957 to 2025, the strongest rated F3, with 0 deaths and 11 injuries recorded in the county. A tornado that crossed a county line is counted in each county it touched, with the length of its path inside the county.

Counted as whole tornadoes rather than county records, the Storm Prediction Center's database holds 37 tornadoes whose track touched Plaquemines Parish since 1950 (NOAA's county records number 35: they file a crossing tornado once per county segment, and the two databases differ on some tracks); along their whole tracks they killed 0 people.

Map of the strongest tornado tracks in Louisiana.

Source: NOAA NCEI Storm Events Database, tornado records by county (path length in the county, maximum width); ratings as published: F scale before February 1, 2007, EF scale after. Whole-track figures: NOAA Storm Prediction Center tornado database (1950-2025). SPC severe weather database.

When was the last damaging storm in Plaquemines Parish?

The most recent record with damage, injuries or deaths is the March 4, 2025 tornado ($10,000 in damage in 2025 dollars).

An EF-1 tornado quickly developed near LA Hwy 23, blowing over several power poles before crossing the Mississippi River. Numerous trees were visibly damaged on high resolution satellite imagery across the river with a faint damage path continuing into the marsh thereafter. The end point is estimated by radar and high resolution satellite imagery.
National Weather Service event narrative, NOAA Storm Events Database (search the full record, event 1246446)

Source: NOAA NCEI Storm Events Database; every record of 2025-2026 is listed, earlier ones when they caused deaths, injuries or $250,000 of damage (2025 dollars), and every tornado.

The deadliest and costliest records

A damage figure marked "step" is a record from before 1993: NOAA then filed damage by category, and the figure is the category as entered, in the dollars of that year, not an estimate of the loss.

Source: NOAA NCEI Storm Events Database: deaths and injuries direct and indirect; damage is property plus crops as estimated by the National Weather Service, converted to 2025 dollars.

Is it getting more frequent?

Records per decade for Plaquemines Parish's most frequent hazards. Counts rose everywhere after 1996, when NOAA began recording every event type, so compare decades within a hazard's complete period only (the shaded cells come before it).

Source: NOAA NCEI Storm Events Database, records per calendar decade; zone records from the CZ_TYPE field (Z).

What time of year?

60% of its hurricane and tropical storm records since 1997 fell in August and September. The two busiest months are in violet.

Source: NOAA NCEI Storm Events Database, records by the month they began.

Federal disaster declarations for Plaquemines Parish

FEMA's register lists 45 declarations that include Plaquemines Parish: 26 major disasters, 19 emergencies and 0 fire management assistance declarations. Most were for hurricane (32) and coastal storm (4).

The 40 most recent of 45 are listed; the CSV has every one.

Source: FEMA OpenFEMA Disaster Declarations Summaries (v2), declarations through October 2, 2026; one declaration is counted once however many areas it names. OpenFEMA dataset page.

How many floods has Plaquemines Parish had?

NOAA's Storm Events Database holds 11 flood or flash flood records for Plaquemines Parish from 1996 to 2021, on 10 days, with 0 deaths. By flood insurance claims since 1978 (OpenFEMA, as of September 8, 2026), Plaquemines Parish ranks 81st of 2,942 U.S. counties. The 100 counties with the most claims

The National Flood Insurance Program has paid $382 million on 6,086 claims filed in Plaquemines Parish; the most in one year was 3,732 in 2005. Claims count insured losses only: uninsured flood damage is not in this file.

Source: FEMA OpenFEMA NFIP Redacted Claims, as of September 8, 2026; claims by year of loss, payments in the dollars of the year paid. OpenFEMA dataset page.

FEMA's modeled risk for Plaquemines Parish

FEMA's National Risk Index rates Plaquemines Parish Relatively Low overall, with an expected annual loss of $28.1 million. These are FEMA's model estimates of future loss from 18 hazards, not a count of what happened; they can differ from the record above.

Source: FEMA National Risk Index, county table, December 2025 release. FEMA's National Risk Index map.

Counties that share a border with Plaquemines Parish

1. Jefferson Parish 768
2. Orleans Parish 628
3. Plaquemines Parish 384
4. St. Bernard Parish 339

Source: U.S. Census Bureau county adjacency file; NOAA NCEI Storm Events Database, records since 1950. The Census Bureau's adjacency file.

Next

• Tornadoes in LouisianaEvery Louisiana tornado since 1950 and the counties with the most per square mile
• Hurricanes and tropical storms in LouisianaThe state's hurricane and tropical storm records, by county, year and month
• The Louisiana recordEvery hazard in the state, its deadliest events and its federal declarations
• FEMA's risk rating for each hazard in Plaquemines ParishThe hazard risk calculator: 18 hazards beside the county's record
• Download Plaquemines Parish's FEMA declarations (CSV)45 rows: every declaration that named the county, for your own analysis