Boundary County, Idaho severe weather history spans 66 recorded events between 1961 and 2025. The dominant hazard is thunderstorm wind, accounting for 36.4% of all recorded events. It ranks #3,002 nationally and #34 in Idaho.
66
Recorded events
0
Direct deaths
2
Direct injuries
$6.5M
Property damage
The record
What the Boundary County, Idaho severe weather history record shows
Across the archive, Boundary County, Idaho severe weather history averages 1.0 recorded events a year. The busiest stretch on record is the 2010s, with 29 events logged in that decade alone. Roughly 3 events fall before 1990 and 63 from 1990 onward — a gap that reflects the expansion of NOAA reporting practice as much as the weather itself.
The costliest is debris flow, with $5.1M in reported property damage. In total, 7 distinct hazard types appear in this county archive, each listed with its own dated record below.
By hazard type
Every hazard type recorded in Boundary County
| Hazard | Events | Deaths | Damage | Max | Span |
|---|---|---|---|---|---|
| Thunderstorm Wind | 24 | 0 | $247K | 65 | 1961–2024 |
| Hail | 14 | 0 | $100K | 1.75 | 1998–2016 |
| Flood | 13 | 0 | $584K | 0 | 2006–2025 |
| Debris Flow | 9 | 0 | $5.1M | 0 | 2015–2023 |
| Flash Flood | 3 | 0 | $501K | 0 | 1998–2023 |
| Heavy Rain | 2 | 0 | $10K | 0 | 1998–1998 |
| Funnel Cloud | 1 | 0 | $0 | 0 | 2017–2017 |
Decade by decade
Boundary County, Idaho 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 |
|---|---|---|---|---|---|
| 1994-05-29 | EF1 | 0 | 0 | 0.1 mi | Touched down here |
Significant events
Deadliest events on record in Boundary County
| Date | Type | Location | Deaths | Injuries | Damage |
|---|---|---|---|---|---|
| Jul 24, 2019 | Thunderstorm Wind | BONNERS FERRY | 0 | 1 | $20K |
| Aug 13, 1989 | Thunderstorm Wind | 0 | 1 | $0 |
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
Periodic heavy rain and spring snow melt during the second half of March promoted numerous debris flows and landslides through out Boundary County. On March 15th vibrations from a train caused a saturated ground landslide which undermined the tracks and caused 12 rail cars full of grain to derail and slide into a ravine near Moyie Springs. Debris flows cut numerous roads in the county during the next two weeks. Boundary County was included in a Presidential Disaster Declaration as a result of damage created by this episode.
A BNSF train derailed when a rock slide cut the rail line along the Kootenai River east of Bonners Ferry. Three locomotives were pushed off of the tracks along with 6 rail cars, with one locomotive completely submerged in the Kootenai River.
Emergency management reported a significant slow slide more than one quarter mile long, timbered and somewhat steep near Cemetery road in Bonners Ferry, Idaho. City engineers and road and bridge workers were out surveying the situation.
Context
Risk, population and federal disasters
Very Low
FEMA NRI risk rating
13,172
Population (ACS)
$411K
Median home value
12
Federal declarations
| Declared | Incident | Title | Type |
|---|---|---|---|
| Apr 7, 2026 | Straight-Line Winds | STRAIGHT-LINE WINDS | DR |
| Apr 9, 2020 | Biological | COVID-19 PANDEMIC | DR |
| Mar 13, 2020 | Biological | COVID-19 | EM |
| May 18, 2017 | Flood | SEVERE STORMS, FLOODING, LANDSLIDES, AND MUDSLIDES | DR |
| Dec 23, 2015 | Severe Storm | SEVERE STORM AND STRAIGHT-LINE WIND | DR |
| Sep 13, 2005 | Hurricane | HURRICANE KATRINA | EM |
Quick answers
Frequently asked
How many severe weather events have been recorded in Boundary County, Idaho?
66 events are on record between 1961 and 2025, causing 0 direct deaths and $6.5M in property damage.
What is the most common severe weather hazard in Boundary County?
Thunderstorm Wind, with 24 recorded events — 36.4% of everything in the archive for this county.
How many tornadoes have crossed Boundary 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 Boundary County?
12 federal disaster declarations from FEMA include Boundary County, each tied to a specific incident period.
How risky is Boundary County compared with the rest of the country?
FEMA's National Risk Index rates Boundary County as very low risk, placing it in the 26 percentile of its state for expected annual loss.
Where does the Boundary 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
- Bonneville County 223
- Butte County 255
- Bonner County 125
- Camas County 26
- Boise County 99
- Canyon County 121
Cite this page
“Boundary County, Idaho.” Severe Weather History. severeweatherhistory.com/county/idaho/boundary-county/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.