Clark County, Idaho severe weather history spans 79 recorded events between 1956 and 2026. The dominant hazard is thunderstorm wind, accounting for 58.2% of all recorded events. It ranks #2,967 nationally and #30 in Idaho.
79
Recorded events
0
Direct deaths
0
Direct injuries
$823K
Property damage
The record
What the Clark County, Idaho severe weather history record shows
Across the archive, Clark County, Idaho severe weather history averages 1.1 recorded events a year. The busiest stretch on record is the 2020s, with 36 events logged in that decade alone. Roughly 6 events fall before 1990 and 73 from 1990 onward — a gap that reflects the expansion of NOAA reporting practice as much as the weather itself.
The costliest is flood, with $760K in reported property damage. In total, 8 distinct hazard types appear in this county archive, each listed with its own dated record below.
By hazard type
Every hazard type recorded in Clark County
| Hazard | Events | Deaths | Damage | Max | Span |
|---|---|---|---|---|---|
| Thunderstorm Wind | 46 | 0 | $0 | 72 | 1956–2026 |
| Hail | 10 | 0 | $5K | 1.75 | 1967–2014 |
| Flood | 7 | 0 | $760K | 0 | 2011–2025 |
| Tornado | 6 | 0 | $33K | F1 | 1964–2013 |
| Wildfire | 4 | 0 | $25K | 0 | 2000–2003 |
| Funnel Cloud | 2 | 0 | $0 | 0 | 2022–2023 |
| Flash Flood | 2 | 0 | $0 | 0 | 2001–2013 |
| Heavy Rain | 2 | 0 | $0 | 0 | 1996–2014 |
Decade by decade
Clark County, Idaho severe weather history by decade
Reporting practice changed over time — early decades are undercounted, not calmer.
Tornado tracks
Paths crossing this county
8 mapped tornado paths intersect this county: 8 touched down inside it and 0 crossed in from a neighbouring county. This comes from path geometry, not county-tagged reports.
| Date | Scale | Deaths | Injuries | Path length | Origin |
|---|---|---|---|---|---|
| 1991-03-25 | EF1 | 0 | 0 | 1.0 mi | Touched down here |
| 2013-09-17 | EF0 | 0 | 0 | 0.5 mi | Touched down here |
| 2005-05-09 | EF0 | 0 | 0 | 0.5 mi | Touched down here |
| 1997-06-30 | EF0 | 0 | 0 | 0.2 mi | Touched down here |
| 1995-06-05 | EF0 | 0 | 0 | 0.1 mi | Touched down here |
| 1993-06-15 | EF0 | 0 | 0 | 0.1 mi | Touched down here |
| 1993-06-15 | EF0 | 0 | 0 | 0.1 mi | Touched down here |
| 1964-06-21 | EF0 | 0 | 0 | 0.1 mi | Touched down here |
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
Snow melt began in earnest with warmer temperatures combined with periods of heavy rain in the latter half of March. This caused extensive sheet flooding in Clark County to the extent that the governor declared it a state of Idaho disaster area. Several county roads received extensive damage and were washed away. 1 home in the Medicine Lodge area flooded completely along with hay bail damage and crop damage. The Birch Creek Campground also had extensive damage with several campgrounds along the birch Creek washed away. The county placed damage estimates close to 700 thousand dollars.
Medicine Lodge Creed near Small went into flood stage around 950 PM on the 24th and reached an all time record at 1230 AM on the 25th and didn't drop below flood stage until 545 AM on the 25th. Two road washouts occurred. One was near the convergence of Medicine Lodge and Middle Creeks. The second was a mile further into the canyon where the Medicine Lodge Creek was flowing over the road. Four to five families were affected by the washouts. Twelve hour rainfall amounts ranged in the 1 to 2 inch range in the flood area. The highest amount was 1.81 inches 9 miles northwest of Small. The flooding area was 3 to 10 miles northwest of Small.
Clark County was declared a natural disaster area by the USDA due to barley crop loss in August from heavy rains. Eastern Idaho lost about 64 million dollars of barley crops due to the rains with a portion of that occurring in Clark County.
Context
Risk, population and federal disasters
Very Low
FEMA NRI risk rating
849
Population (ACS)
$217K
Median home value
4
Federal declarations
| Declared | Incident | Title | Type |
|---|---|---|---|
| Apr 9, 2020 | Biological | COVID-19 PANDEMIC | DR |
| Mar 13, 2020 | Biological | COVID-19 | EM |
| Jul 29, 2018 | Fire | GRASSY RIDGE FIRE | FM |
| Sep 13, 2005 | Hurricane | HURRICANE KATRINA | EM |
Quick answers
Frequently asked
How many severe weather events have been recorded in Clark County, Idaho?
79 events are on record between 1956 and 2026, causing 0 direct deaths and $823K in property damage.
What is the most common severe weather hazard in Clark County?
Thunderstorm Wind, with 46 recorded events — 58.2% of everything in the archive for this county.
How many tornadoes have crossed Clark County?
8 mapped tornado paths intersect the county boundary; 8 of them touched down inside it. This is derived from path geometry, not county-tagged reports.
How many federal disaster declarations cover Clark County?
4 federal disaster declarations from FEMA include Clark County, each tied to a specific incident period.
How risky is Clark County compared with the rest of the country?
FEMA's National Risk Index rates Clark County as very low risk, placing it in the 1 percentile of its state for expected annual loss.
Where does the Clark County, Idaho 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
- Cassia County 243
- Clearwater County 93
- Caribou County 105
- Custer County 70
- Canyon County 121
- Elmore County 130
Cite this page
“Clark County, Idaho.” Severe Weather History. severeweatherhistory.com/county/idaho/clark-county/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.