PlainHazard

Assumption Parish, Louisiana

Parish storm and disaster record · FIPS 22007 · population 21,017 · 344 sq mi

NOAA's Storm Events Database holds 164 records for Assumption Parish, Louisiana from 1950 through June 30, 2026, on 145 days; the most frequent are severe thunderstorm wind events (41 records). The most damaging was the December 1, 2000 drought ($37.2 million in 2025 dollars). FEMA has issued 49 declarations naming the county since 1965, 47 of them for natural hazards; the latest for a natural hazard was “Severe Winter Storm” on January 24, 2026.

The record, 1950 to 2026

Storm records filed for the county each year (2026 to June 30, 2026). Before 1996 NOAA recorded only tornadoes (from 1950), thunderstorm wind and hail (from 1955).

  • recorded, no damage figure
  • under $100,000
  • $100,000 or more
  • $1 million or more
  • $10 million or more, or a death
  • $100 million or more, or 10 deaths
  • a year's colour: its recorded damage or deaths
  • a year with a death
  • 1955: wind and hail recorded from 1955
  • 1996: all 48 event types from 1996
Storm records
164on 145 days, 1950 to June 30, 2026
Deaths recorded
010 injuries
Damage, 2025 dollars
$151Mas filed (scale steps before 1993)
Tornadoes
22strongest EF3
FEMA declarations
49latest 2026

Source: NOAA NCEI Storm Events Database, records through June 30, 2026 (file revision 20260918); damage converted to 2025 dollars with the BLS CPI-U. Search the record at NCEI. BLS consumer price index.

What hazards hit Assumption Parish most?

The most frequent records are severe thunderstorm wind events: 41 since 1960. 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.

Assumption Parish: records by hazard, 1950 to June 30, 2026
HazardRecordsDaysFirst, lastKilledInjuredDamageRank in state
Severe thunderstorm wind 41 38 1960-2023 0 0 $1.2M 56 of 64
Heat 24 24 2000-2025 0 0 – 24 of 64
Hurricanes and tropical storms 22 18 1998-2024 0 0 $94M 9 of 64
Tornadoes 22 21 1953-2024 0 10 $9.4M 20 of 64
Drought 15 14 1996-2026 0 0 $44M 24 of 64
Hail 13 12 1977-2023 0 0 $12K 58 of 64
Floods 10 10 1997-2024 0 0 $1.4M 55 of 64
Winter storms 8 7 2004-2025 0 0 $13K 40 of 64
Extreme cold 5 5 1996-2026 0 0 – 7 of 64
Lightning 2 2 2011-2013 0 0 $1.4M 30 of 64
High wind and dust storms 1 1 1996-1996 0 0 – 40 of 64
Fog, smoke and funnel clouds 1 1 1999-1999 0 0 – 36 of 64

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 Assumption Parish had?

NOAA records 22 tornadoes in Assumption Parish from 1953 to 2024, the strongest rated EF3, with 0 deaths and 10 injuries recorded in the county. That is 20th of 64 Louisiana 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 21 tornadoes whose track touched Assumption Parish since 1950 (NOAA's county records number 22: 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.

The deadliest and strongest tornadoes that touched Assumption Parish, whole tracks
DateTornadoRatingPathKilled
2016-02-23 15:21, as SPC files itBelle RoseEF37.78 mi0

Map of the strongest tornado tracks in Louisiana.

Every tornado record filed for Assumption Parish (22)
Every tornado recorded in Assumption Parish, newest first
DatePlaceCharacterKilledInjuredDamage
2024-01-08 Himalaya, Assumption Parish EF0 0.88 mi x 200 yd 0 0 $141K
2020-08-26 Magnolia, Assumption Parish EF0 0.05 mi x 10 yd 0 0 –
2019-06-06 Magnolia, Assumption Parish EF0 1.72 mi x 50 yd 0 0 –
2016-02-23 Westfield, Assumption Parish EF3 7.78 mi x 350 yd 0 0 –
2015-04-27 Pierre Pass, Assumption Parish EF0 0.64 mi x 75 yd 0 0 –
2015-04-27 Pierre Pass, Assumption Parish EF1 0.64 mi x 150 yd 0 0 –
2003-04-07 Belle Rose, Assumption Parish F1 0.5 mi x 35 yd 0 0 $40K
2002-10-09 Napoleonville, Assumption Parish F1 0.5 mi x 50 yd 0 0 $2.5M
2000-04-03 Labadieville, Assumption Parish F0 0.1 mi x 25 yd 0 0 –
1998-10-06 Napoleonville, Assumption Parish F0 0.1 mi x 20 yd 0 0 –
1995-04-23 Labadieville, Assumption Parish F0 0.1 mi x 10 yd 0 0 –
1987-02-15 Assumption Parish F2 3 mi x 173 yd 0 4 $250K step
1982-01-30 Assumption Parish F2 3 mi x 10 yd 0 1 $25K step
1981-07-23 Assumption Parish F1 0.5 mi x 20 yd 0 0 $25K step
1980-03-17 Assumption Parish F0 2 mi x 33 yd 0 0 $250K step
1977-07-20 Assumption Parish F0 0 0 –
1974-04-12 Assumption Parish F0 4.5 mi x 17 yd 0 2 $25K step
1974-01-19 Assumption Parish F2 0.3 mi x 27 yd 0 0 $3K step
1973-09-12 Assumption Parish F2 6.2 mi x 50 yd 0 3 $250K step
1964-10-03 Assumption Parish F2 1.5 mi x 100 yd 0 0 $25K step
1957-10-23 Assumption Parish F2 11 mi x 100 yd 0 0 $25K step
1953-05-02 Assumption Parish F1 1 mi x 100 yd 0 0 $250K step

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, 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 Assumption Parish?

The most recent record with damage, injuries or deaths is the September 11, 2024 hurricane ($941,000 in damage in 2025 dollars).

Francine’s winds downed trees and powerlines throughout the parish, blocking numerous roads and causing damage to some structures. Over 80 percent of the parish was without power at the peak.
National Weather Service event narrative, NOAA Storm Events Database (search the full record, event 1217702)
The 12 most recent records kept for Assumption Parish
DateRecordCharacterKilledInjuredDamage
2026-03-01 DroughtAssumption Parish · forecast zone Assumption 0 0 –
2026-02-17 DroughtAssumption Parish · forecast zone Assumption 0 0 –
2026-01-27 Extreme Cold/Wind ChillAssumption Parish · forecast zone Assumption 0 0 –
2025-07-23 Excessive HeatAssumption Parish · forecast zone Assumption 0 0 –
2025-01-22 Extreme Cold/Wind ChillAssumption Parish · forecast zone Assumption 0 0 –
2025-01-21 Heavy SnowAssumption Parish · forecast zone Assumption 0 0 –
2024-09-11 Hurricane (Typhoon)Assumption Parish · forecast zone Assumption 0 0 $941K
2024-01-08 TornadoHimalaya, Assumption Parish EF0 0.88 mi x 200 yd 0 0 $141K
2023-06-20 HailLabadieville, Assumption Parish 2.00 in hail 0 0 –
2021-08-29 Hurricane (Typhoon)Assumption Parish · forecast zone Assumption 0 0 $11M
2020-10-09 Tropical StormAssumption Parish · forecast zone Assumption 0 0 $5.7M
2020-08-26 TornadoMagnolia, Assumption Parish EF0 0.05 mi x 10 yd 0 0 –

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

Records with deaths or injuries in Assumption Parish, most deaths first
DateRecordCharacterKilledInjuredDamage
1987-02-15 TornadoAssumption Parish F2 3 mi x 173 yd 0 4 $250K step
1973-09-12 TornadoAssumption Parish F2 6.2 mi x 50 yd 0 3 $250K step
1974-04-12 TornadoAssumption Parish F0 4.5 mi x 17 yd 0 2 $25K step
1982-01-30 TornadoAssumption Parish F2 3 mi x 10 yd 0 1 $25K step

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.

The costliest records in Assumption Parish since 1993, damage in 2025 dollars
DateRecordCharacterKilledInjuredDamage
2000-12-01 DroughtAssumption Parish · forecast zone Assumption 0 0 $37M
2008-09-01 Hurricane (Typhoon)Assumption Parish · forecast zone Lower St. Martin 0 0 $21M
2008-09-01 Hurricane (Typhoon)Assumption Parish · forecast zone Assumption 0 0 $13M
2005-08-28 Hurricane (Typhoon)Assumption Parish · forecast zone Assumption 0 0 $13M
2012-08-28 Hurricane (Typhoon)Assumption Parish · forecast zone Assumption 0 0 $7.1M
1998-08-01 DroughtAssumption Parish · forecast zone Assumption 0 0 $6.4M
2002-10-09 TornadoNapoleonville, Assumption Parish F1 0.5 mi x 50 yd 0 0 $2.5M
2002-10-03 Hurricane (Typhoon)Assumption Parish · forecast zone Lower St. Martin 0 0 $1.6M

Before 1993 NOAA filed damage by category, not amount, so the list above starts in 1993. The highest category filed here before then (entered as $250K, in the dollars of the day) holds: February 15, 1987 (tornado, Assumption Parish); September 12, 1973 (tornado, Assumption Parish); May 2, 1953 (tornado, Assumption Parish).

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 Assumption 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).

Assumption Parish: records per decade (the 2020s to June 30, 2026)
Hazard1950s1960s1970s1980s1990s2000s2010s2020-26
Severe thunderstorm wind0324101651
Heat––––02022
Hurricanes and tropical storms––––21163
Tornadoes21442342
Drought––––32010
Hail00114016

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 Assumption Parish. The two busiest months are in violet.

The values, month by month

Jan 17 · Feb 7 · Mar 11 · Apr 19 · May 12 · Jun 9 · Jul 12 · Aug 33 · Sep 17 · Oct 11 · Nov 3 · Dec 13 (records).

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

Federal disaster declarations for Assumption Parish

FEMA's register lists 49 declarations that include Assumption Parish: 30 major disasters, 19 emergencies and 0 fire management assistance declarations. Most were for hurricane (29) and flood (9).

Declarations including Assumption Parish, newest first
DeclaredNumberTypeTitle
2026-01-24EM-3638Winter StormSevere Winter Storm
2024-09-16DR-4817HurricaneHurricane Francine
2024-09-10EM-3614HurricaneTropical Storm Francine
2021-09-13EM-3574Coastal StormTropical Storm Nicholas
2021-08-29DR-4611HurricaneHurricane Ida
2021-08-27EM-3568HurricaneTropical Storm Ida
2021-06-02DR-4606FloodSevere Storms, Tornadoes, and Flooding
2021-03-09DR-4590Severe Ice StormSevere Winter Storms
2021-02-18EM-3556Severe Ice StormSevere Winter Storm
2021-01-12DR-4577HurricaneHurricane Zeta
2020-10-27EM-3549HurricaneTropical Storm Zeta
2020-10-16DR-4570HurricaneHurricane Delta
2020-10-07EM-3547HurricaneHurricane Delta
2020-09-14EM-3543HurricaneHurricane Sally
2020-08-28DR-4559HurricaneHurricane Laura
2020-08-23EM-3538HurricaneTropical Storms Laura and Marco
2020-06-07EM-3527Coastal StormTropical Storm Cristobal
2020-03-24DR-4484BiologicalCovid-19 Pandemic
2020-03-13EM-3459BiologicalCovid-19
2019-09-19DR-4462FloodFlooding
2019-08-27DR-4458HurricaneHurricane Barry
2019-07-11EM-3416Coastal StormTropical Storm Barry
2019-05-29EM-3413FloodFlooding
2017-10-16DR-4345HurricaneTropical Storm Harvey
2017-10-06EM-3392HurricaneTropical Storm Nate
2016-08-14DR-4277FloodSevere Storms and Flooding
2012-08-29DR-4080HurricaneHurricane Isaac
2012-08-27EM-3347HurricaneTropical Storm Isaac
2011-08-18DR-4015FloodFlooding
2011-05-06EM-3322FloodFlooding
2008-09-02DR-1786HurricaneHurricane Gustav
2008-08-29EM-3289HurricaneHurricane Gustav
2005-09-24DR-1607HurricaneHurricane Rita
2005-09-21EM-3260HurricaneHurricane Rita
2005-08-29DR-1603HurricaneHurricane Katrina
2005-08-27EM-3212HurricaneHurricane Katrina
2004-09-15DR-1548HurricaneHurricane Ivan
2002-10-03DR-1437HurricaneHurricane Lili
2002-09-27DR-1435HurricaneTropical Storm Isidore
2001-06-11DR-1380Coastal StormTropical Storm Allison

The 40 most recent of 49 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 Assumption Parish had?

NOAA's Storm Events Database holds 10 flood or flash flood records for Assumption Parish from 1997 to 2024, on 10 days, with 0 deaths. By flood insurance claims since 1978 (OpenFEMA, as of September 8, 2026), Assumption Parish ranks 353rd of 2,942 U.S. counties.

Named storms on Assumption Parish's flood and tropical record
StormBeganRecordsDeaths in the county
Tropical Storm Francine2024-09-1110
Tropical Storm Ida2021-08-2910
Hurricane Delta2020-10-0910
Hurricane Isaac2012-08-2820
Hurricane Gustav2008-09-0140
Hurricane Rita2005-09-2310
Hurricane Katrina2005-08-2820
Hurricane Lili2002-10-0220
Tropical Storm Allison2001-06-0710

The National Flood Insurance Program has paid $5.1 million on 883 claims filed in Assumption Parish; the most in one year was 133 in 1980. Claims count insured losses only: uninsured flood damage is not in this file.

The values, year by year

1979: 125 · 1980: 133 · 1982: 6 · 1983: 35 · 1984: 5 · 1985: 10 · 1987: 5 · 1988: 3 · 1989: 4 · 1990: 2 · 1991: 131 · 1992: 27 · 1993: 4 · 1994: 3 · 1995: 7 · 1996: 7 · 1997: 30 · 1998: 6 · 2000: 2 · 2001: 62 · 2002: 12 · 2003: 33 · 2004: 9 · 2005: 22 · 2008: 36 · 2009: 23 · 2011: 57 · 2012: 3 · 2013: 3 · 2014: 11 · 2015: 3 · 2016: 3 · 2017: 8 · 2018: 4 · 2019: 16 · 2021: 21 · 2024: 12; the other years: 0.

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 Assumption Parish

FEMA's National Risk Index rates Assumption Parish Relatively Low overall, with an expected annual loss of $20.2 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.

National Risk Index ratings for Assumption Parish (December 2025 release), by FEMA's rating, then score
HazardRisk ratingExpected annual lossModeled frequency
DroughtRelatively High$2.4M22 modeled event-days a year
HurricaneRelatively High$11Monce in about 4 years (modeled)
Coastal FloodingRelatively Moderate$1.3M3.7 a year (modeled)
TornadoRelatively Moderate$1.6Monce in about 4 years (modeled)
Heat WaveRelatively Low$554K14 modeled event-days a year
LightningRelatively Low$172K89 a year (modeled)
Cold WaveRelatively Low$675Kabout once a year (modeled)
Strong WindRelatively Low$125Kabout once a year (modeled)

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

Counties that share a border with Assumption Parish

  1. Terrebonne Parish 442
  2. Lafourche Parish 434
  3. Ascension Parish 315
  4. Iberia Parish 297
  5. St. Mary Parish 281
  6. St. Martin Parish 239
  7. Iberville Parish 239
  8. Assumption Parish 164
  9. St. James Parish 159

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

Next