Sanders County, Montana severe weather history spans 64 recorded events between 1956 and 2025. The dominant hazard is thunderstorm wind, accounting for 40.6% of all recorded events. It ranks #3,009 nationally and #53 in Montana.
64
Recorded events
0
Direct deaths
1
Direct injuries
$226K
Property damage
The record
What the Sanders County, Montana severe weather history record shows
Across the archive, Sanders County, Montana severe weather history averages 0.9 recorded events a year. The busiest stretch on record is the 2000s, with 21 events logged in that decade alone. Roughly 5 events fall before 1990 and 59 from 1990 onward — a gap that reflects the expansion of NOAA reporting practice as much as the weather itself.
The costliest is flood, with $104K 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 Sanders County
| Hazard | Events | Deaths | Damage | Max | Span |
|---|---|---|---|---|---|
| Thunderstorm Wind | 26 | 0 | $91K | 78 | 1985–2024 |
| Hail | 23 | 0 | $11K | 1.75 | 1956–2025 |
| Flood | 7 | 0 | $104K | 0 | 2006–2025 |
| Heavy Rain | 4 | 0 | $5K | 0 | 2009–2017 |
| Tornado | 1 | 0 | $0 | 0 | 1978–1978 |
| Flash Flood | 1 | 0 | $15K | 0 | 2010–2010 |
| Debris Flow | 1 | 0 | $0 | 0 | 2023–2023 |
| Wildfire | 1 | 0 | $0 | 0 | 2003–2003 |
Decade by decade
Sanders County, Montana severe weather history by decade
Reporting practice changed over time — early decades are undercounted, not calmer.
Tornado tracks
Paths crossing this county
1 mapped tornado paths intersect this county: 1 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 |
|---|---|---|---|---|---|
| 1978-07-09 | EF0 | 0 | 0 | 0.1 mi | Touched down here |
Significant events
Deadliest events on record in Sanders County
| Date | Type | Location | Deaths | Injuries | Damage |
|---|---|---|---|---|---|
| Mar 14, 2003 | Thunderstorm Wind | PARADISE | 0 | 1 | $5K |
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
At approximately 0400MST on December 11, a massive landslide occurred near Eagle View Lane, roughly 2 miles south-southwest of Bull Lake. The debris flow significantly damaged a residential garage, and the residents were unharmed. An Emergency Declaration was issued to address the lowland flooding and debris removal. Highway 56 near Bull Lake was forced to close between mileposts 16.7 and 17.2 after overwhelmed culverts allowed stream overflow to inundate the roadway. The emergency manager reported that over a dozen properties were isolated from Highway 56, either by a foot of water over access bridges or by an approximate 50-yard-wide flow of sediment-laden water separating residences from the main road. |A bridge on Montana Highway 471/Thompson Pass Road, near milepost 15, was washed out by Prospect Creek, resulting in a road closure. Prospect Creek also flooded the Prospect Creek campground at the Wild Coyote, located 7 miles up Prospect from Highway 200.
A slow moving thunderstorm dropped rainfall amounts of 1.59 inches up to an estimated 3.25 inches in a one to two hour period. Twenty five homes were flooded from runoff. One home owner had half their yard washed away with a shed also flooded.
White Pine Creek, located 12 miles northwest of Thompson Falls overflowed and damaged White Pine Creek road so bad that one resident was isolated from getting back to their home. Elk Creek road near Heron sustained damage during this event.
Context
Risk, population and federal disasters
Relatively Low
FEMA NRI risk rating
13,285
Population (ACS)
$359K
Median home value
16
Federal declarations
| Declared | Incident | Title | Type |
|---|---|---|---|
| Apr 7, 2026 | Straight-Line Winds | SEVERE WINTER STORM AND STRAIGHT-LINE WINDS | DR |
| Dec 19, 2025 | Flood | SEVERE STORMS AND FLOODING | EM |
| Aug 19, 2023 | Fire | RIVER ROAD EAST FIRE | FM |
| Mar 31, 2020 | Biological | COVID-19 PANDEMIC | DR |
| Mar 13, 2020 | Biological | COVID-19 | EM |
| Sep 10, 2017 | Fire | HIGHWAY 200 FIRE COMPLEX | FM |
Quick answers
Frequently asked
How many severe weather events have been recorded in Sanders County, Montana?
64 events are on record between 1956 and 2025, causing 0 direct deaths and $226K in property damage.
What is the most common severe weather hazard in Sanders County?
Thunderstorm Wind, with 26 recorded events — 40.6% of everything in the archive for this county.
How many tornadoes have crossed Sanders County?
1 mapped tornado paths intersect the county boundary; 1 of them touched down inside it. This is derived from path geometry, not county-tagged reports.
How many federal disaster declarations cover Sanders County?
16 federal disaster declarations from FEMA include Sanders County, each tied to a specific incident period.
How risky is Sanders County compared with the rest of the country?
FEMA's National Risk Index rates Sanders County as relatively low risk, placing it in the 47 percentile of its state for expected annual loss.
Where does the Sanders County, Montana 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
- Rosebud County 600
- Sheridan County 357
- Roosevelt County 612
- Silver Bow County 81
- Richland County 491
- Stillwater County 287
Cite this page
“Sanders County, Montana.” Severe Weather History. severeweatherhistory.com/county/montana/sanders-county/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.