St. Charles Parish, Louisiana

What hazards hit St. Charles Parish most?

The most frequent records are severe thunderstorm wind events: 121 since 1955. 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 St. Charles Parish had?

NOAA records 27 tornadoes in St. Charles Parish from 1953 to 2026, the strongest rated F3, with 1 death and 19 injuries recorded in the county. That is 8th of 64 Louisiana counties and 84th of 3,080 U.S. counties by days with tornadoes per 1,000 square miles since 1950. 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 23 tornadoes whose track touched St. Charles Parish since 1950 (NOAA's county records number 27: they file a crossing tornado once per county segment, and the two databases differ on some tracks); along their whole tracks they killed 1 person.

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 St. Charles Parish?

The most recent record with damage, injuries or deaths is the July 17, 2025 flash flood ($10,000 in damage in 2025 dollars).

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 St. Charles 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?

Records by month in St. Charles Parish. The two busiest months are in violet.

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

Federal disaster declarations for St. Charles Parish

FEMA's register lists 52 declarations that include St. Charles Parish: 33 major disasters, 19 emergencies and 0 fire management assistance declarations. Most were for hurricane (31) and flood (6).

The 40 most recent of 52 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 St. Charles Parish had?

NOAA's Storm Events Database holds 67 flood or flash flood records for St. Charles Parish from 1996 to 2026, on 53 days, with 0 deaths. By flood insurance claims since 1978 (OpenFEMA, as of September 8, 2026), St. Charles Parish ranks 66th of 2,942 U.S. counties. The 100 counties with the most claims

The National Flood Insurance Program has paid $161 million on 7,568 claims filed in St. Charles Parish; the most in one year was 2,031 in 1995. 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 St. Charles Parish

FEMA's National Risk Index rates St. Charles Parish Relatively Moderate overall, with an expected annual loss of $56.7 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 St. Charles Parish

1. Jefferson Parish 768
2. Lafourche Parish 434
3. St. Charles Parish 365
4. St. John the Baptist Parish 194

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
• Severe thunderstorm wind in LouisianaThe state's severe thunderstorm wind events, 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 St. Charles ParishThe hazard risk calculator: 18 hazards beside the county's record
• Download St. Charles Parish's FEMA declarations (CSV)52 rows: every declaration that named the county, for your own analysis