Fallon County, MT Environment & Hazard Risk
Very Low natural hazard risk, led by cold wave. 475 storm events since 1996.
- Expected yearly loss
- $4.3M
- Very Low nationally
- Storm events since 1996
- 475
- Most often hail
- Flood insurance policies
- 2
- 0.1% of homes
- Hurricanes nearby
- 0
- Since 1851
Natural hazard risk
FEMA National Risk Index, December 2025
Overall risk
Very Low
Score 5.4 of 100
Social vulnerability
Very Low
Score 10.6 of 100
Community resilience
Relatively Low
Score 22.5 of 100
Community resilience runs the other way: a higher rating means a community can recover faster.
Building value exposed: $1.5B · Agriculture value exposed: $58.3M · Risk-adjusted yearly loss: $3.3M
Risk by hazard
- Cold waveRelatively Moderate$2.6M/yr expected annual loss, about 8.2 events a year
- Winter weatherRelatively Low$116K/yr expected annual loss, about 16 events a year
- WildfireVery Low$92.6K/yr expected annual loss, about once every 467 years
- HailVery Low$126K/yr expected annual loss, about 2.2 events a year
- DroughtVery Low$5,573/yr expected annual loss, about 55 events a year
- Ice stormVery Low$19.3K/yr expected annual loss, about once every 6 years
- LandslideVery Low$80/yr expected annual loss, about once every 2 years
- Heat waveVery Low$39.4K/yr expected annual loss, about 1.9 events a year
- TornadoVery Low$97.8K/yr expected annual loss, about once every 6 years
- LightningVery Low$37.8K/yr expected annual loss, about 32 events a year
- Strong windVery Low$83.3K/yr expected annual loss, about 1.3 events a year
- EarthquakeVery Low$10.3K/yr expected annual loss, about once every 7,353 years
Bars show the national percentile score (0 to 100) for each hazard. Dollar figures are expected annual losses to buildings, people and crops. Not rated here: avalanche, coastal flooding, hurricane, riverine flooding, tsunami, volcanic activity.
Flood risk and insurance
National Flood Insurance Program and FEMA flood maps
Check the flood zone for an address
- Homes with flood insurance
- 2 of 2,277 (0.1%)
- Homes in high-risk flood zones
- 0
- Flood claims since 1978
- 1
Storm history
Since 1996: 475 events, 0 deaths, $2.9M in damage
- Hail170
- Thunderstorm Wind116
- High Wind67
- Winter Storm28
- Blizzard24
- Heavy Snow15
- Flash Flood14
- Funnel Cloud13
- Tornado9
- Extreme Cold/Wind Chill6
Events per year
14 tornadoes on record (EF0 4, EF3 1, F0 2, F1 2, F2 2).
Most damaging storms
Since 1996, ranked by deaths, injuries and damage
- TornadoEF3, 3 mi path, 200 yd wide06/12/2016
Baker Arpt, Fallon County
7 injured, $1.5M damage
What happened
The pre-storm environment for eastern Montana was such that severe weather was likely. Surface dew point values in the Baker area were in the lower 60s with strong southeasterly flow converging in the vicinity of a stationary surface trough. This area of strong surface convergence, which also separated moist rich air to the east and drier air to the west, played a critical role in the development of this short-lived tornado. ||Although no fatalities occurred , seven injuries, some requiring hospitalization, resulted from the tornado. Two homes were totally destroyed and 40 to 50 more sustained excessive damage. The city blocks located between South 5th Street East and South 10th Street East intersected by Texas Avenue were hit the hardest and sustained the most damage. Many power poles were broken resulting in power lines down and power outages. Single tree trunks were described to look like match sticks as they were stripped of all branches and leaves. ||Over 70 personnel came with boots on the ground from the surrounding tri-state area. The communities of Plevna, Ekalaka, and Wibaux, Montana, Marmarth, Rhame, Bowman and Beach, North Dakota, as well as Ludlow, South Dakota...
- Hail2" hail07/10/2016
Baker Arpt, Fallon County
$1M damage
What happened
Hail up to 2 inches in diameter along with 50 to 60 mph winds occurred at the Baker Airport. The hail was still two to three inches deep on the ground after the storm. Multiple hangers were damaged by the hail and wind. Several hangers received broken window damage. In addition, several vehicles at the airport were severely damaged with some windows of vehicles completely broken. A few of the vehicles were considered total losses.
- Flood05/20/2011
Webster, Fallon County
$375K damage
What happened
Significant small stream flooding across much of Fallon County. Numerous roads closed and eventually washed out with additional damage reported to several bridges. Water breached a small dam and a couple private holding ponds in the region. Significant erosion threatened the Waste Water Treatment Plant in Baker. Significant flooding reported on O'Fallon Creek where one spotter reported the highest levels on the stream in at least 58 years with over a foot of water covering much of their farmland. At the Boxelder and Horse Creek confluence, flood waters rushed over dikes and into hayfields. Floodwaters surrounded one house in that region. Damage estimates based on FEMA reviews and Individual Assistance approvals.
- TornadoF2, 2 mi path, 200 yd wide07/26/2001
Baker, Fallon County
What happened
NWS Post-Storm Damage Assessment Team determined F2 tornado 200 yards wide with a path length of 2 miles. It was on the ground for 15 minutes over open range west of State Highway 7.
- TornadoF2, 5 mi path, 300 yd wide06/21/1999
Baker, Fallon County
What happened
A large tornado which touched down near Ollie Road, about 3 miles east of Montana Highway 7. The tornado travelled north to County Road 616 then northwest over Beaver Creek before lifting at the Fallon/Wibaux County border. The tornado destroyed a well built cattle shed, lifted up, twisted and moved a large irrigation pipe about 100 yards and sucked the water out of a section of Beaver Creek.
Drinking water
4 community water systems serve about 2,185 people. Violations since 2021.
None of the systems serving this county had a health-based violation in this period.
- Baker City ofServes 1,858 · Groundwater · Local governmentNo health violations+77 monitoring or reporting
- Plevna Town ofServes 130 · Groundwater · Local governmentNo health violations+3 monitoring or reporting
- North Baker Water and Or Sewer DistServes 112 · Purchased groundwater · Local governmentNo health violations+1 monitoring or reporting
- Fallon County Water DistrictServes 85 · Purchased groundwater · PrivateNo health violations+1 monitoring or reporting
Largest systems by population served. Monitoring and reporting violations mean required tests or notices were late or missing, not that the water was unsafe.
Pollution sites
0 Superfund sites and 0 toxic release facilities in Fallon County
No Superfund sites or toxic release facilities in Fallon County in our data.
Superfund sitesToxic release facilitiesEPA inspections and enforcementAir toxics cancer risk3 historic places
Frequently asked questions
- How risky is Fallon County for natural disasters?
- FEMA rates Fallon County very low for overall natural hazard risk, with expected losses of $4.3M a year. The highest-rated hazards are cold wave (relatively moderate), winter weather (relatively low), wildfire (very low).
- What storms are most common in Fallon County?
- Since 1996, NOAA recorded 475 storm events affecting Fallon County, most often hail (170), thunderstorm wind (116), high wind (67).
- How many tornadoes have hit Fallon County?
- 14 tornadoes have been recorded in Fallon County since 1950, including 1 rated F3/EF3 or stronger.
- How many homes in Fallon County have flood insurance?
- 2 residential flood insurance policies are in force in Fallon County, covering about 0.1% of homes.
- What is the weather like in Fallon County?
- At Plevna, average highs reach 86°F in Jul and lows fall to 6°F in Jan, with 15.6 inches of rain a year (1991-2020 normals).
Source: FEMA (National Risk Index, NFIP), NOAA (Storm Events, HURDAT2, Climate Normals), EPA · Last updated 08/01/2026 · Storm counts include events in forecast zones that touch the county. This product uses the FEMA OpenFEMA API, but is not endorsed by FEMA.