Twin Falls County, Idaho
County storm and disaster record · FIPS 16083 · population 89,972 · 1,922 sq mi
NOAA's Storm Events Database holds 277 records for Twin Falls County, Idaho from 1950 through June 30, 2026, on 201 days; the most frequent are winter storm records (68 records). The deadliest single record is the December 1, 2014 winter weather, filed for the forecast zone Western Magic Valley, which covers the county: 2 deaths. FEMA has issued 4 declarations naming the county since 2005, 2 of them for natural hazards; the latest for a natural hazard was “Severe Winter Storms and Flooding” on April 21, 2017.
The record, 1950 to 2026
Storm records filed for the county each year (2026 to June 30, 2026). Before 1996 NOAA recorded only tornadoes (from 1950), thunderstorm wind and hail (from 1955).
- recorded, no damage figure
- under $100,000
- $100,000 or more
- $1 million or more
- $10 million or more, or a death
- $100 million or more, or 10 deaths
- a year's colour: its recorded damage or deaths
- a year with a death
- 1955: wind and hail recorded from 1955
- 1996: all 48 event types from 1996
- Storm records
- 277on 201 days, 1950 to June 30, 2026
- Deaths recorded
- 35 injuries
- Damage, 2025 dollars
- $98Mas filed (scale steps before 1993)
- Tornadoes
- 12strongest F1
- FEMA declarations
- 4latest 2020
Source: NOAA NCEI Storm Events Database, records through June 30, 2026 (file revision 20260918); damage converted to 2025 dollars with the BLS CPI-U. Search the record at NCEI. BLS consumer price index.
What hazards hit Twin Falls County most?
The most frequent records are winter storm records: 68 since 1996. 49% of its winter storm records since 1996 fell in December and January. The rank column places the county among Idaho's counties by days with a record per 1,000 square miles of land over each hazard's complete period.
| Hazard | Records | Days | First, last | Killed | Injured | Damage | Rank in state |
|---|---|---|---|---|---|---|---|
| Winter storms | 68 | 59 | 1996-2024 | 2 | 2 | – | 42 of 44 |
| Severe thunderstorm wind | 63 | 47 | 1958-2025 | 0 | 3 | $2.7M | 25 of 44 |
| High wind and dust storms | 56 | 39 | 1999-2026 | 1 | 0 | $253K | 28 of 44 |
| Hail | 48 | 41 | 1963-2023 | 0 | 0 | $12K | 10 of 44 |
| Tornadoes | 12 | 11 | 1957-2019 | 0 | 0 | $76K | 11 of 44 |
| Floods | 11 | 9 | 1996-2017 | 0 | 0 | $95M | 37 of 44 |
| Heavy rain | 9 | 6 | 1996-2014 | 0 | 0 | $9K | 15 of 44 |
| Fog, smoke and funnel clouds | 7 | 7 | 1997-2023 | 0 | 0 | – | 18 of 44 |
| Wildfires | 2 | 2 | 2000-2011 | 0 | 0 | – | 35 of 44 |
| Extreme cold | 1 | 1 | 2002-2002 | 0 | 0 | – | 39 of 44 |
Source: NOAA NCEI Storm Events Database (county and forecast-zone records attributed to the county; a zone record shows its own totals on each county it covers). Days: dates with at least one record of the hazard in the county. Ranks: days with a record per 1,000 square miles of land (Census Bureau 2024 Gazetteer), since 1950 for tornadoes, 1955 for hail and thunderstorm wind, 1996 for the rest.
How many tornadoes has Twin Falls County had?
NOAA records 12 tornadoes in Twin Falls County from 1957 to 2019, the strongest rated F1, with 0 deaths and 0 injuries recorded in the county. That is 11th of 44 Idaho counties by days with tornadoes per 1,000 square miles since 1950. A tornado that crossed a county line is counted in each county it touched, with the length of its path inside the county.
Counted as whole tornadoes rather than county records, the Storm Prediction Center's database holds 12 tornadoes whose track touched Twin Falls County since 1950 (NOAA's county records number 12, the same count); along their whole tracks they killed 0 people.
Map of the strongest tornado tracks in Idaho.
Every tornado record filed for Twin Falls County (12)
| Date | Place | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2019-05-07 | Kimberly, Twin Falls County | EF0 1.51 mi x 10 yd | 0 | 0 | – |
| 2011-03-16 | Twin Falls County | EF0 7.36 mi x 10 yd | 0 | 0 | – |
| 2008-07-22 | Twin Falls Airport, Twin Falls County | EF0 1 mi x 25 yd | 0 | 0 | – |
| 1998-05-12 | Buhl, Twin Falls County | F0 1 mi x 50 yd | 0 | 0 | – |
| 1993-03-17 | Countywide, Twin Falls County | F0 0.1 mi x 10 yd | 0 | 0 | – |
| 1993-03-17 | Twin Falls County | F0 0.1 mi x 10 yd | 0 | 0 | – |
| 1991-09-10 | Twin Falls County | F0 0.1 mi x 20 yd | 0 | 0 | – |
| 1990-09-03 | Twin Falls County | F0 0.1 mi x 10 yd | 0 | 0 | – |
| 1990-04-20 | Twin Falls County | F0 0.2 mi x 10 yd | 0 | 0 | – |
| 1986-06-24 | Twin Falls County | F1 0.5 mi x 60 yd | 0 | 0 | $3K step |
| 1985-09-08 | Twin Falls County | F1 0.2 mi x 7 yd | 0 | 0 | $25K step |
| 1957-06-05 | Twin Falls County | F1 | 0 | 0 | $30 step |
A damage figure marked "step" is a record from before 1993: NOAA then filed damage by category, and the figure is the category as entered, in the dollars of that year, not an estimate of the loss.
Source: NOAA NCEI Storm Events Database, tornado records by county (path length in the county, maximum width); ratings as published: F scale before February 1, 2007, EF scale after. Whole-track figures: NOAA Storm Prediction Center tornado database (1950-2025). SPC severe weather database.
When was the last damaging storm in Twin Falls County?
The most recent record with damage, injuries or deaths is the December 17, 2025 thunderstorm wind (1 injury).
Media and Idaho Department of Transportation reporting one semi flipped on route 93 near Filer, Idaho. The flip occurred on a north-south bound section of the highway, and crosswinds from the west-northwest hit the side of the semi, flipping it and injuring the driver.
National Weather Service event narrative, NOAA Storm Events Database (search the full record, event 1301559)
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2026-05-13 | High WindGooding County and 2 more · forecast zone Western Magic Valley | 51 kt wind | 0 | 0 | – |
| 2026-05-13 | High WindGooding County and 2 more · forecast zone Western Magic Valley | 56 kt wind | 0 | 0 | – |
| 2026-05-13 | High WindGooding County and 2 more · forecast zone Western Magic Valley | 56 kt wind | 0 | 0 | – |
| 2026-05-13 | High WindGooding County and 2 more · forecast zone Western Magic Valley | 55 kt wind | 0 | 0 | – |
| 2026-05-13 | High WindGooding County and 2 more · forecast zone Western Magic Valley | 56 kt wind | 0 | 0 | – |
| 2026-05-13 | High WindGooding County and 2 more · forecast zone Western Magic Valley | 54 kt wind | 0 | 0 | – |
| 2026-05-13 | High WindGooding County and 2 more · forecast zone Western Magic Valley | 56 kt wind | 0 | 0 | – |
| 2026-03-14 | High WindGooding County and 2 more · forecast zone Western Magic Valley | 35 kt wind | 0 | 0 | – |
| 2026-03-14 | High WindTwin Falls County · forecast zone Southern Twin Falls County | 52 kt wind | 0 | 0 | – |
| 2025-12-17 | High WindGooding County and 2 more · forecast zone Western Magic Valley | 60 kt wind | 0 | 0 | – |
| 2025-12-17 | High WindTwin Falls County · forecast zone Southern Twin Falls County | 58 kt wind | 0 | 0 | – |
| 2025-12-17 | Thunderstorm WindCurry, Twin Falls County | 52 kt wind | 0 | 1 | – |
Source: NOAA NCEI Storm Events Database; every record of 2025-2026 is listed, earlier ones when they caused deaths, injuries or $250,000 of damage (2025 dollars), and every tornado.
The deadliest and costliest records
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2014-12-01 | Winter WeatherGooding County and 2 more · forecast zone Western Magic Valley Two fatalities occurred in Jerome County in two separate incidents in the early morning due to snow covered roads. The first accident occurred at 5:37 AM on Interstate 84 near mile marker 179 when the vehicle slid into the median and rolled over. The second occurred at 6:06 AM on Interstate 84 near mile marker 170. ... | 2 | 0 | – | |
| 2016-06-06 | Dust StormGooding County and 2 more · forecast zone Western Magic Valley Idaho State Police reported a pile up of four semi trucks, two SUVs and two passenger cars on Interstate 84 near Hazelton due to a dust storm caused by strong thunderstorm winds. One fatality was reported and several people were taken to the hospital. | 1 | 0 | – | |
| 2025-12-17 | Thunderstorm WindTwin Falls Airport, Twin Falls County At approximately 7 AM, two children who were waiting for the bus near 3400 N and 3100 E just to the southeast of Twin Falls were critically injured as a strong thunderstorm wind gust uprooted and toppled trees. 65 mph gust is estimated based on pictures of the trees downed. | 56 kt wind | 0 | 2 | – |
| 2001-11-28 | Heavy SnowGooding County and 2 more · forecast zone Western Magic Valley A very moist Pacific storm brought the first major snowfall to the Treasure and Magic Valleys. Snow began falling around noon and continued until the next morning. Over one hundred slide-offs and motor vehicle collisions occurred along Interstate 84 from Oregon-Idaho state line east to Twin Falls. Traffic was brought ... | 0 | 2 | – | |
| 2025-12-17 | Thunderstorm WindCurry, Twin Falls County Media and Idaho Department of Transportation reporting one semi flipped on route 93 near Filer, Idaho. The flip occurred on a north-south bound section of the highway, and crosswinds from the west-northwest hit the side of the semi, flipping it and injuring the driver. | 52 kt wind | 0 | 1 | – |
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 1997-06-01 | FloodGooding County and 2 more · forecast zone Western Magic Valley | 0 | 0 | $92M | |
| 2017-02-08 | FloodTwin Falls Airport, Twin Falls County | 0 | 0 | $3.0M | |
| 1993-03-17 | Thunderstorm WindKimberly, Twin Falls County | 0 | 0 | $1.0M | |
| 1994-05-06 | Thunderstorm WindTwin Falls County | 0 | 0 | $995K | |
| 1998-07-30 | Thunderstorm WindFiler, Twin Falls County | 0 | 0 | $362K |
Before 1993 NOAA filed damage by category, not amount, so the list above starts in 1993. The highest category filed here before then (entered as $25K, in the dollars of the day) holds: September 8, 1985 (tornado, Twin Falls County).
Source: NOAA NCEI Storm Events Database: deaths and injuries direct and indirect; damage is property plus crops as estimated by the National Weather Service, converted to 2025 dollars.
Is it getting more frequent?
Records per decade for Twin Falls County's most frequent hazards. Counts rose everywhere after 1996, when NOAA began recording every event type, so compare decades within a hazard's complete period only (the shaded cells come before it).
| Hazard | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020-26 |
|---|---|---|---|---|---|---|---|---|
| Winter storms | – | – | – | – | 7 | 27 | 25 | 9 |
| Severe thunderstorm wind | 2 | 3 | 2 | 8 | 18 | 5 | 15 | 10 |
| High wind and dust storms | – | – | – | – | 3 | 13 | 8 | 32 z |
| Hail | 0 | 3 | 3 | 3 | 13 | 11 | 12 | 3 |
| Tornadoes | 1 | 0 | 0 | 2 | 6 | 1 | 2 | 0 |
| Floods | – | – | – | – | 3 | 3 | 5 | 0 |
High wind and dust storms in the 2020-26: 32 records against 8 in the decade before, 32 of them forecast-zone records. Cells marked z rose mostly through zone records. The local National Weather Service office files these once per forecast zone, so a change in how it draws its zones or splits a storm into records moves this count as much as the weather does; read it beside the Twin Falls County days with a record above.
Source: NOAA NCEI Storm Events Database, records per calendar decade; zone records from the CZ_TYPE field (Z).
What time of year?
49% of its winter storm records since 1996 fell in December and January. The two busiest months are in violet.
The values, month by month
Jan 21 · Feb 23 · Mar 23 · Apr 13 · May 37 · Jun 32 · Jul 25 · Aug 27 · Sep 19 · Oct 11 · Nov 15 · Dec 31 (records).
Source: NOAA NCEI Storm Events Database, records by the month they began.
Federal disaster declarations for Twin Falls County
FEMA's register lists 4 declarations that include Twin Falls County: 2 major disasters, 2 emergencies and 0 fire management assistance declarations. Most were for biological (2) and flood (1).
| Declared | Number | Type | Title |
|---|---|---|---|
| 2020-04-09 | DR-4534 | Biological | Covid-19 Pandemic |
| 2020-03-13 | EM-3467 | Biological | Covid-19 |
| 2017-04-21 | DR-4310 | Flood | Severe Winter Storms and Flooding |
| 2005-09-13 | EM-3244 | Hurricane | Hurricane Katrina |
Source: FEMA OpenFEMA Disaster Declarations Summaries (v2), declarations through October 2, 2026; one declaration is counted once however many areas it names. OpenFEMA dataset page.
How many floods has Twin Falls County had?
NOAA's Storm Events Database holds 11 flood or flash flood records for Twin Falls County from 1996 to 2017, on 9 days, with 0 deaths. By flood insurance claims since 1978 (OpenFEMA, as of September 8, 2026), Twin Falls County ranks 2181st of 2,942 U.S. counties.
The National Flood Insurance Program has paid $25,000 on 16 claims filed in Twin Falls County; the most in one year was 4 in 1979. Claims count insured losses only: uninsured flood damage is not in this file.
The values, year by year
1979: 4 · 1989: 1 · 1993: 2 · 1999: 1 · 2005: 1 · 2014: 2 · 2017: 2 · 2021: 1 · 2024: 2; the other years: 0.
Source: FEMA OpenFEMA NFIP Redacted Claims, as of September 8, 2026; claims by year of loss, payments in the dollars of the year paid. OpenFEMA dataset page.
FEMA's modeled risk for Twin Falls County
FEMA's National Risk Index rates Twin Falls County Relatively Low overall, with an expected annual loss of $16.6 million. These are FEMA's model estimates of future loss from 18 hazards, not a count of what happened; they can differ from the record above.
| Hazard | Risk rating | Expected annual loss | Modeled frequency |
|---|---|---|---|
| Winter Weather | Relatively High | $779K | 12 a year (modeled) |
| Wildfire | Relatively Moderate | $3.0M | once in about 41 years (modeled) |
| Landslide | Relatively Moderate | $95K | once in about 3 years (modeled) |
| Heat Wave | Relatively Moderate | $1.9M | 3.2 modeled event-days a year |
| Earthquake | Relatively Low | $1.2M | once in about 385 years (modeled) |
| Ice Storm | Relatively Low | $128K | once in about 18 years (modeled) |
| Lightning | Relatively Low | $304K | 24 a year (modeled) |
| Riverine Flooding | Relatively Low | $7.6M | once in about 3 years (modeled) |
Source: FEMA National Risk Index, county table, December 2025 release. FEMA's National Risk Index map.
Counties that share a border with Twin Falls County
Source: U.S. Census Bureau county adjacency file; NOAA NCEI Storm Events Database, records since 1950. The Census Bureau's adjacency file.
Next
- Tornadoes in IdahoEvery Idaho tornado since 1950 and the counties with the most per square mile
- Winter storms in IdahoThe state's winter storm records, by county, year and month
- The Idaho recordEvery hazard in the state, its deadliest events and its federal declarations
- FEMA's risk rating for each hazard in Twin Falls CountyThe hazard risk calculator: 18 hazards beside the county's record
- Download Twin Falls County's FEMA declarations (CSV)4 rows: every declaration that named the county, for your own analysis