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Grundy County, Missouri severe weather history spans 366 recorded events between 1956 and 2025. The dominant hazard is hail, accounting for 44.3% of all recorded events. It ranks #1,400 nationally and #56 in Missouri.
366
Recorded events
0
Direct deaths
9
Direct injuries
$1.0M
Property damage
The record
What the Grundy County, Missouri severe weather history record shows
Across the archive, Grundy County, Missouri severe weather history averages 5.3 recorded events a year. The busiest stretch on record is the 2010s, with 135 events logged in that decade alone. Roughly 33 events fall before 1990 and 333 from 1990 onward — a gap that reflects the expansion of NOAA reporting practice as much as the weather itself.
The costliest is tornado, with $625K in reported property damage. In total, 6 distinct hazard types appear in this county archive, each listed with its own dated record below.
By hazard type
Every hazard type recorded in Grundy County
| Hazard | Events | Deaths | Damage | Max | Span |
|---|---|---|---|---|---|
| Hail | 162 | 0 | $300K | 4.25 | 1961–2024 |
| Thunderstorm Wind | 143 | 0 | $117K | 70 | 1956–2025 |
| Flash Flood | 30 | 0 | $0 | 100 | 1996–2023 |
| Tornado | 19 | 0 | $625K | F2 | 1958–2024 |
| Flood | 9 | 0 | $0 | 0 | 1998–2018 |
| Heavy Rain | 3 | 0 | $0 | 0 | 2011–2011 |
Decade by decade
Grundy County, Missouri severe weather history by decade
Reporting practice changed over time — early decades are undercounted, not calmer.
Tornado tracks
Paths crossing this county
18 mapped tornado paths intersect this county: 17 touched down inside it and 1 crossed in from a neighbouring county. This comes from path geometry, not county-tagged reports.
| Date | Scale | Deaths | Injuries | Path length | Origin |
|---|---|---|---|---|---|
| 1967-04-21 | EF2 | 0 | 7 | 6.3 mi | Touched down here |
| 1965-04-10 | EF2 | 0 | 1 | 10.3 mi | Touched down here |
| 1965-04-10 | EF2 | 0 | 1 | 11.1 mi | Crossed in |
| 1958-11-17 | EF2 | 0 | 0 | 14.9 mi | Touched down here |
| 2021-06-24 | EF1 | 0 | 0 | 4.9 mi | Touched down here |
| 1977-05-21 | EF1 | 0 | 0 | 3.8 mi | Touched down here |
| 1960-03-29 | EF1 | 0 | 0 | 0.3 mi | Touched down here |
| 2024-04-27 | EF0 | 0 | 0 | 4.0 mi | Touched down here |
| 2023-05-06 | EF0 | 0 | 0 | 0.5 mi | Touched down here |
| 2021-06-24 | EF0 | 0 | 0 | 1.7 mi | Touched down here |
Significant events
Deadliest events on record in Grundy County
| Date | Type | Location | Deaths | Injuries | Damage |
|---|---|---|---|---|---|
| Apr 21, 1967 | Tornado | 0 | 7 | $25K | |
| Apr 10, 1965 | Tornado | 0 | 1 | $25K | |
| Apr 10, 1965 | Tornado | 0 | 1 | $250K |
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
A storm chaser in Trenton caught a brief tornado on video. This tornado did some visible damage to a local church, but that damage was mostly superficial as the brick facade crumbled off the face of the building. No injuries were reported.
Another QLCS tornado formed within a squall line across Grundy County. Local emergency management conducted the survey and came across several barns heavily damaged along the path, with the most significant damage coming near JJ and E, where two grain bins were caved in and moved off their foundation.
While a few of the storms on May 30 produced several funnels, one storm in Grundy County actually produced a couple very brief and weak tornadoes. This is the second of those two tornadoes. It caused no damage and persisted for about 1 minute.
Context
Risk, population and federal disasters
Very Low
FEMA NRI risk rating
9,787
Population (ACS)
$113K
Median home value
21
Federal declarations
| Declared | Incident | Title | Type |
|---|---|---|---|
| Sep 21, 2023 | Severe Storm | SEVERE STORMS, STRAIGHT-LINE WINDS, TORNADOES, AND FLOODING | DR |
| Sep 1, 2021 | Severe Storm | SEVERE STORMS, STRAIGHT-LINE WINDS, TORNADOES, AND FLOODING | DR |
| Mar 26, 2020 | Biological | COVID-19 PANDEMIC | DR |
| Mar 13, 2020 | Biological | COVID-19 | EM |
| Jul 9, 2019 | Severe Storm | SEVERE STORMS, TORNADOES, AND FLOODING | DR |
| Oct 31, 2014 | Severe Storm | SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING | DR |
Within the county
Most affected places
- Trenton 120
Quick answers
Frequently asked
How many severe weather events have been recorded in Grundy County, Missouri?
366 events are on record between 1956 and 2025, causing 0 direct deaths and $1.0M in property damage.
What is the most common severe weather hazard in Grundy County?
Hail, with 162 recorded events — 44.3% of everything in the archive for this county.
How many tornadoes have crossed Grundy County?
18 mapped tornado paths intersect the county boundary; 17 of them touched down inside it. This is derived from path geometry, not county-tagged reports.
How many federal disaster declarations cover Grundy County?
21 federal disaster declarations from FEMA include Grundy County, each tied to a specific incident period.
How risky is Grundy County compared with the rest of the country?
FEMA's National Risk Index rates Grundy County as very low risk, placing it in the 28 percentile of its state for expected annual loss.
Where does the Grundy County, Missouri severe weather history data come from?
Every figure is drawn from United States federal public-domain records: NOAA/NCEI Storm Events for the event archive, NOAA SPC SVRGIS for mapped tornado paths, FEMA for disaster declarations and risk ratings, and the U.S. Census for population context. Dates are shown in UTC and recent entries may still be revised by NOAA.
Nearby
Neighbouring counties
- Greene County 2,096
- Harrison County 310
- Gentry County 232
- Henry County 371
- Gasconade County 309
- Hickory County 372
Cite this page
“Grundy County, Missouri.” Severe Weather History. severeweatherhistory.com/county/missouri/grundy-county/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.