Marion County, Missouri
County storm and disaster record · FIPS 29127 · population 28,508 · 437 sq mi
NOAA's Storm Events Database holds 428 records for Marion County, Missouri from 1950 through June 30, 2026, on 322 days; the most frequent are severe thunderstorm wind events (142 records). The deadliest single record is the July 1, 2023 strong wind, filed for the forecast zone Marion, which covers the county: 1 death. FEMA has issued 25 declarations naming the county since 1965, 23 of them for natural hazards; the latest for a natural hazard was “Severe Storms, Straight-Line Winds, Tornadoes, and Flooding” on August 3, 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
- 428on 322 days, 1950 to June 30, 2026
- Deaths recorded
- 16 injuries
- Damage, 2025 dollars
- $31Mas filed (scale steps before 1993)
- Tornadoes
- 12strongest F3
- FEMA declarations
- 25latest 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 Marion County most?
The most frequent records are severe thunderstorm wind events: 142 since 1955. 42% of its severe thunderstorm wind events since 1955 fell in June and July. The rank column places the county among Missouri's counties by days with a record per 1,000 square miles of land over each hazard's complete period.
| Hazard | Records | Days | First, last | Killed | Injured | Damage | Rank in state |
|---|---|---|---|---|---|---|---|
| Severe thunderstorm wind | 142 | 112 | 1955-2025 | 0 | 3 | $325K | 22 of 114 |
| Hail | 111 | 77 | 1959-2024 | 0 | 0 | $1.4M | 42 of 114 |
| Winter storms | 54 | 53 | 1996-2025 | 0 | 0 | – | 19 of 114 |
| Heat | 43 | 43 | 1999-2023 | 0 | 1 | – | 24 of 114 |
| Floods | 39 | 36 | 1996-2026 | 0 | 0 | $28M | 64 of 114 |
| Tornadoes | 12 | 7 | 1977-2021 | 0 | 1 | $1.4M | 108 of 114 |
| High wind and dust storms | 10 | 10 | 1997-2023 | 1 | 0 | $5K | 14 of 114 |
| Extreme cold | 7 | 7 | 2000-2025 | 0 | 0 | – | 52 of 114 |
| Drought | 6 | 6 | 2005-2012 | 0 | 0 | – | 95 of 114 |
| Lightning | 4 | 4 | 2003-2010 | 0 | 1 | $37K | 17 of 114 |
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 Marion County had?
NOAA records 12 tornadoes in Marion County from 1977 to 2021, the strongest rated F3, with 0 deaths and 1 injury 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 16 tornadoes whose track touched Marion County since 1950 (NOAA's county records number 12: 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.
| Date | Tornado | Rating | Path | Killed |
|---|---|---|---|---|
| 2003-05-10 17:37, as SPC files it | Monroe | F3 | 12 mi | 0 |
Map of the strongest tornado tracks in Missouri.
Every tornado record filed for Marion County (12)
| Date | Place | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2021-06-24 | Mungers, Marion County | EF0 0.13 mi x 25 yd | 0 | 0 | – |
| 2021-06-24 | White Bear, Marion County | EF0 0.21 mi x 50 yd | 0 | 0 | – |
| 2013-05-20 | White Bear, Marion County | EF1 1.16 mi x 50 yd | 0 | 0 | – |
| 2007-10-02 | Ely, Marion County | EF0 1.2 mi x 50 yd | 0 | 0 | – |
| 2007-10-02 | Hannibal Municipal Airport, Marion County | EF0 0.51 mi x 40 yd | 0 | 0 | – |
| 2007-10-02 | Woodland, Marion County | EF1 3.79 mi x 100 yd | 0 | 1 | $142K |
| 2007-10-02 | Palmyra, Marion County | EF0 0.7 mi x 60 yd | 0 | 0 | $71K |
| 2004-05-24 | Hannibal, Marion County | F0 2 mi x 50 yd | 0 | 0 | – |
| 2003-05-10 | Ely, Marion County | F3 9.5 mi x 200 yd | 0 | 0 | – |
| 2003-05-10 | Ely, Marion County | F0 1 mi x 40 yd | 0 | 0 | – |
| 1977-09-23 | Marion County | F2 16.8 mi x 100 yd | 0 | 0 | $250K step |
| 1977-04-04 | Marion County | F0 0.2 mi x 10 yd | 0 | 0 | $3K 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 Marion County?
The most recent record with damage, injuries or deaths is the June 11, 2026 flood ($20,000 in damage in 2025 dollars).
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2026-06-11 | FloodWoodland, Marion County | 0 | 0 | $20K | |
| 2025-11-29 | Winter StormMarion County · forecast zone Marion | 0 | 0 | – | |
| 2025-08-09 | Thunderstorm WindWest Quincy, Marion County | 52 kt wind | 0 | 0 | – |
| 2025-08-09 | Thunderstorm WindHester, Marion County | 61 kt wind | 0 | 0 | – |
| 2025-07-29 | Thunderstorm WindPalmyra, Marion County | 55 kt wind | 0 | 0 | $20K |
| 2025-07-11 | Thunderstorm WindHannibal, Marion County | 55 kt wind | 0 | 0 | – |
| 2025-07-11 | Thunderstorm WindPalmyra, Marion County | 55 kt wind | 0 | 0 | – |
| 2025-06-03 | Thunderstorm WindPalmyra, Marion County | 50 kt wind | 0 | 0 | $50K |
| 2025-05-19 | Thunderstorm WindWithers Mill, Marion County | 60 kt wind | 0 | 0 | – |
| 2025-04-20 | Thunderstorm WindWithers Mill, Marion County | 61 kt wind | 0 | 0 | $35K |
| 2025-03-14 | Thunderstorm WindWithers Mill, Marion County | 61 kt wind | 0 | 0 | – |
| 2025-01-21 | Cold/Wind ChillMarion County · forecast zone Marion | 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
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2023-07-01 | Strong WindMarion County · forecast zone Marion A non-severe thunderstorm moved through Hannibal. Winds gusted up to 50 mph and blew down a large tree that was rotten inside. The tree fell onto an occupied camper located on the 1600 block of Montana Street. A person inside the camper was crushed by the fallen tree and was pronounced dead on the scene. | 43 kt wind | 1 | 0 | – |
| 2011-06-18 | Thunderstorm WindWarren, Marion County Thunderstorm winds blew a mobile home off its foundation and destroyed it. Three people were in the mobile home at the time, two adults and one infant. All three suffered only minor injuries. | 61 kt wind | 0 | 3 | – |
| 2007-10-02 | TornadoWoodland, Marion County A tornado touched down half a mile east of the intersection of Highway F and CR 255, about one and a quarter miles east of Woodland. Several trees and large tree limbs were blown down at this location. The tornado traveled to the northeast, damaging a machine shed near the intersection of CR 279 and CR 264. It ... | EF1 3.79 mi x 100 yd | 0 | 1 | $142K |
| 2006-08-26 | LightningHannibal, Marion County Lightning struck a house on Ridgewood causing a fire resulting in one injury and moderate damage. A woman was treated at a local hospital for smoke inhalation. | 0 | 1 | $37K | |
| 2002-06-01 | HeatMarion County · forecast zone Marion An early season heat wave resulted in 14 heat related injuries, as reported by the State Department of Health and Senior Services. High temperatures across the area were in the upper 80's to lower 90's with average daily temperatures about 10 to 15 degrees above normal. | 0 | 1 | – |
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2008-06-03 | FloodMark, Marion County | 0 | 0 | $28M | |
| 2008-05-13 | HailHannibal, Marion County | 1.75 in hail | 0 | 0 | $1.4M |
| 2010-07-20 | Flash FloodHannibal, Marion County | 0 | 0 | $271K | |
| 2007-10-02 | TornadoWoodland, Marion County | EF1 3.79 mi x 100 yd | 0 | 1 | $142K |
| 2011-02-27 | Thunderstorm WindHannibal Municipal Airport, Marion County | 76 kt wind | 0 | 0 | $131K |
| 2025-06-03 | Thunderstorm WindPalmyra, Marion County | 50 kt wind | 0 | 0 | $50K |
| 2006-08-26 | LightningHannibal, Marion County | 0 | 1 | $37K | |
| 2025-04-20 | Thunderstorm WindWithers Mill, Marion County | 61 kt wind | 0 | 0 | $35K |
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: September 23, 1977 (tornado, Marion County).
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 Marion County'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).
| Hazard | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020-26 |
|---|---|---|---|---|---|---|---|---|
| Severe thunderstorm wind | 5 | 5 | 7 | 23 | 19 | 28 | 30 | 25 |
| Hail | 1 | 4 | 2 | 8 | 16 | 48 | 25 | 7 |
| Winter storms | – | – | – | – | 12 | 21 | 13 | 8 |
| Heat | – | – | – | – | 1 | 18 | 22 | 2 |
| Floods | – | – | – | – | 2 | 20 | 13 | 4 |
| Tornadoes | 0 | 0 | 2 | 0 | 0 | 7 | 1 | 2 |
Source: NOAA NCEI Storm Events Database, records per calendar decade; zone records from the CZ_TYPE field (Z).
What time of year?
42% of its severe thunderstorm wind events since 1955 fell in June and July. The two busiest months are in violet.
The values, month by month
Jan 30 · Feb 20 · Mar 26 · Apr 43 · May 69 · Jun 62 · Jul 71 · Aug 48 · Sep 20 · Oct 10 · Nov 11 · Dec 18 (records).
Source: NOAA NCEI Storm Events Database, records by the month they began.
Federal disaster declarations for Marion County
FEMA's register lists 25 declarations that include Marion County: 18 major disasters, 7 emergencies and 0 fire management assistance declarations. Most were for severe storm (15) and flood (3).
| Declared | Number | Type | Title |
|---|---|---|---|
| 2026-08-03 | DR-4929 | Severe Storm | Severe Storms, Straight-Line Winds, Tornadoes, and Flooding |
| 2020-03-26 | DR-4490 | Biological | Covid-19 Pandemic |
| 2020-03-13 | EM-3482 | Biological | Covid-19 |
| 2019-07-09 | DR-4451 | Severe Storm | Severe Storms, Tornadoes, and Flooding |
| 2016-01-02 | EM-3374 | Flood | Severe Storms, Tornadoes, Straight-Line Winds, and Flooding |
| 2015-08-07 | DR-4238 | Severe Storm | Severe Storms, Tornadoes, Straight-Line Winds, and Flooding |
| 2013-07-18 | DR-4130 | Severe Storm | Severe Storms, Straight-Line Winds, Tornadoes, and Flooding |
| 2011-03-23 | DR-1961 | Severe Storm | Severe Winter Storm and Snowstorm |
| 2011-02-03 | EM-3317 | Severe Storm | Severe Winter Storm |
| 2010-08-17 | DR-1934 | Severe Storm | Severe Storms, Flooding, and Tornadoes |
| 2009-06-19 | DR-1847 | Severe Storm | Severe Storms, Tornadoes, and Flooding |
| 2009-01-30 | EM-3303 | Severe Ice Storm | Severe Winter Storm |
| 2008-11-13 | DR-1809 | Severe Storm | Severe Storms, Flooding, and A Tornado |
| 2008-06-25 | DR-1773 | Severe Storm | Severe Storms and Flooding |
| 2007-12-12 | EM-3281 | Severe Ice Storm | Severe Winter Storms |
| 2006-12-29 | DR-1673 | Severe Storm | Severe Winter Storms |
| 2005-09-10 | EM-3232 | Hurricane | Hurricane Katrina Evacuation |
| 2003-05-06 | DR-1463 | Severe Storm | Severe Storms, Tornadoes, and Flooding |
| 2002-05-06 | DR-1412 | Severe Storm | Severe Storms, Tornadoes and Flooding |
| 2002-02-06 | DR-1403 | Severe Ice Storm | Severe Winter Ice Storm |
| 1993-07-09 | DR-995 | Flood | Severe Storms & Flooding |
| 1993-05-11 | DR-989 | Flood | Severe Storms & Flooding |
| 1976-09-24 | EM-3017 | Drought | Drought |
| 1973-04-19 | DR-372 | Severe Storm | Heavy Rains, Tornadoes & Flooding |
| 1965-06-14 | DR-198 | Severe Storm | Flooding |
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 Marion County had?
NOAA's Storm Events Database holds 39 flood or flash flood records for Marion County from 1996 to 2026, on 36 days, with 0 deaths. By flood insurance claims since 1978 (OpenFEMA, as of September 8, 2026), Marion County ranks 479th of 2,942 U.S. counties.
The National Flood Insurance Program has paid $11.2 million on 535 claims filed in Marion County; the most in one year was 141 in 1993. Claims count insured losses only: uninsured flood damage is not in this file.
The values, year by year
1979: 28 · 1980: 1 · 1981: 22 · 1982: 11 · 1983: 77 · 1984: 1 · 1985: 12 · 1986: 66 · 1987: 1 · 1990: 1 · 1992: 1 · 1993: 141 · 1996: 5 · 1998: 1 · 2001: 26 · 2004: 1 · 2008: 42 · 2009: 1 · 2010: 43 · 2011: 1 · 2013: 14 · 2014: 4 · 2015: 15 · 2017: 1 · 2018: 4 · 2019: 13 · 2020: 2; 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 Marion County
FEMA's National Risk Index rates Marion County Relatively Low overall, with an expected annual loss of $16.8 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.
| Hazard | Risk rating | Expected annual loss | Modeled frequency |
|---|---|---|---|
| Heat Wave | Relatively Moderate | $1.7M | 8.9 modeled event-days a year |
| Strong Wind | Relatively Moderate | $1.1M | 3.9 a year (modeled) |
| Landslide | Relatively Low | $14K | once in about 4 years (modeled) |
| Hail | Relatively Low | $548K | 3.4 a year (modeled) |
| Drought | Relatively Low | $345K | 6.4 modeled event-days a year |
| Riverine Flooding | Relatively Low | $9.8M | 1.3 a year (modeled) |
| Cold Wave | Relatively Low | $1.5M | 4.2 a year (modeled) |
| Lightning | Relatively Low | $315K | 48 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 Marion County
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 MissouriEvery Missouri tornado since 1950 and the counties with the most per square mile
- Severe thunderstorm wind in MissouriThe state's severe thunderstorm wind events, by county, year and month
- The Missouri recordEvery hazard in the state, its deadliest events and its federal declarations
- FEMA's risk rating for each hazard in Marion CountyThe hazard risk calculator: 18 hazards beside the county's record
- Download Marion County's FEMA declarations (CSV)25 rows: every declaration that named the county, for your own analysis