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Wind in Lemhi County, Idaho
57 damaging wind events in the NCEI Storm Events record, 1950 to 2026. Event types counted: Thunderstorm Wind, High Wind, Strong Wind.
NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders. Storm records through 30 Jun 2026.
Lemhi County, Idaho, has 57 wind events in the NCEI record since 1950, with at least one in 27 different years.
August is the busiest month, with 21 of the recorded events. The last 20 years account for 29 events against 24 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1.6% of the 3,559 wind events recorded in Idaho; its 1.2 per 100 square miles compares with 4.3 statewide.
46 wind reports with a measured or estimated speed reached the 58 mph severe threshold, and 3 reached hurricane force (74 mph).
Compared with Idaho
| Measure | Lemhi County | Idaho | US |
|---|---|---|---|
| Wind events since 1950 | 57 | 3,559 | 701,953 |
| Per 100 square miles | 1.2 | 4.3 | 19.9 |
| Per 10,000 residents | 69.8 | 18.7 | 21.1 |
| Deaths recorded | 0 | 25 | 2,166 |
| Busiest month | August | July | June |
By year
Seasonality
0Feb
0Mar
0Apr
1May
2Jun
8Jul
20Aug
21Sep
5Oct
0Nov
0Dec
0
Magnitude distribution
NWS wind thresholds
- under 58 mph
- below severe threshold
- 58–73 mph
- severe
- 74–95 mph
- hurricane-force
- 96 mph and over
- extreme
Wind speed converted from the knots NCEI records; estimated and measured gusts are combined. Events without a speed are not binned.
Recorded events
All 57 events, most recent first. Magnitude is hail size, tornado rating or wind speed as recorded.
| Date | Event type | Magnitude | Property damage | Crop damage | Deaths | Injuries | Geography |
|---|---|---|---|---|---|---|---|
| 19 Jun 2025 | Thunderstorm Wind | 81 mph | $70K | — | — | — | County |
| 11 Sep 2024 | Thunderstorm Wind | 58 mph | — | — | — | — | County |
| 11 Sep 2024 | Thunderstorm Wind | 74 mph | — | — | — | — | County |
| 29 Aug 2023 | Thunderstorm Wind | 64 mph | — | $8K | — | — | County |
| 13 Jul 2022 | Thunderstorm Wind | 66 mph | $15K | — | — | — | County |
| 26 Jun 2017 | Thunderstorm Wind | 68 mph | $10K | — | — | — | County |
| 6 Aug 2016 | Thunderstorm Wind | 58 mph | $500 | — | — | — | County |
| 6 Aug 2016 | Thunderstorm Wind | 64 mph | $1K | — | — | — | County |
| 5 Sep 2013 | Thunderstorm Wind | 69 mph | $5K | — | — | — | County |
| 5 Sep 2013 | Thunderstorm Wind | 87 mph | $1K | — | — | — | County |
| 1 Aug 2013 | Thunderstorm Wind | 49 mph | $11K | — | — | — | County |
| 17 Jul 2013 | Thunderstorm Wind | 60 mph | — | — | — | — | County |
| 9 Jul 2012 | Thunderstorm Wind | 71 mph | — | — | — | — | County |
| 9 Jul 2012 | Thunderstorm Wind | 59 mph | — | — | — | — | County |
| 4 Aug 2011 | Thunderstorm Wind | 49 mph | $2K | $3K | — | — | County |
| 15 Jul 2011 | Thunderstorm Wind | 72 mph | — | — | — | — | County |
| 6 Aug 2010 | Thunderstorm Wind | 60 mph | — | — | — | — | County |
| 6 Aug 2010 | Thunderstorm Wind | 62 mph | — | — | — | — | County |
| 5 Aug 2010 | Thunderstorm Wind | 59 mph | — | — | — | — | County |
| 5 Aug 2010 | Thunderstorm Wind | 58 mph | — | — | — | — | County |
| 5 Aug 2010 | Thunderstorm Wind | 64 mph | — | — | — | 1 | County |
| 5 Aug 2010 | Thunderstorm Wind | 58 mph | $2K | — | — | — | County |
| 13 Jul 2010 | Thunderstorm Wind | 64 mph | $1K | — | — | — | County |
| 13 Jul 2010 | Thunderstorm Wind | 64 mph | — | — | — | — | County |
| 6 Aug 2009 | Thunderstorm Wind | 71 mph | — | — | — | — | County |
| 22 Jul 2008 | Thunderstorm Wind | 66 mph | — | — | — | — | County |
| 22 Jul 2008 | Thunderstorm Wind | 63 mph | $4K | — | — | — | County |
| 31 May 2008 | Thunderstorm Wind | 70 mph | $15K | — | — | — | County |
| 7 Jul 2007 | Thunderstorm Wind | 63 mph | — | — | — | — | County |
| 4 Jun 2006 | Thunderstorm Wind | 69 mph | — | — | — | — | County |
| 21 Jun 2005 | Thunderstorm Wind | 64 mph | — | — | — | — | County |
| 21 Jun 2005 | Thunderstorm Wind | 62 mph | $10K | — | — | — | County |
| 21 Jun 2005 | Thunderstorm Wind | 60 mph | — | — | — | — | County |
| 21 Jun 2005 | Thunderstorm Wind | 62 mph | — | — | — | — | County |
| 5 Aug 2004 | Thunderstorm Wind | 61 mph | — | — | — | — | County |
| 5 Aug 2004 | Thunderstorm Wind | 62 mph | — | — | — | — | County |
| 14 Jul 2004 | Thunderstorm Wind | 69 mph | — | — | — | — | County |
| 30 May 2003 | Thunderstorm Wind | 63 mph | — | — | — | — | County |
| 29 Aug 2002 | Thunderstorm Wind | 68 mph | — | — | — | — | County |
| 23 Jul 2002 | Thunderstorm Wind | 62 mph | — | — | — | — | County |
| 23 Jul 2002 | Thunderstorm Wind | 60 mph | — | — | — | — | County |
| 13 Aug 2001 | Thunderstorm Wind | 69 mph | — | — | — | — | County |
| 13 Aug 2001 | Thunderstorm Wind | 79 mph | — | — | — | — | County |
| 4 Aug 2001 | Thunderstorm Wind | 67 mph | — | — | — | — | County |
| 21 Jul 2001 | Thunderstorm Wind | 64 mph | — | — | — | — | County |
| 31 Jul 2000 | Thunderstorm Wind | 69 mph | — | — | — | — | County |
| 27 Apr 2000 | Thunderstorm Wind | 61 mph | — | — | — | — | County |
| 21 Aug 1998 | Thunderstorm Wind | 59 mph | — | — | — | — | County |
| 9 Aug 1998 | Thunderstorm Wind | 70 mph | — | — | — | — | County |
| 24 Jun 1998 | Thunderstorm Wind | 60 mph | — | — | — | — | County |
| 9 Jul 1995 | Thunderstorm Wind | 74 mph | — | — | — | — | County |
| 23 Sep 1992 | Thunderstorm Wind | 0 mph | — | — | — | — | County |
| 6 Aug 1988 | Thunderstorm Wind | 0 mph | — | — | — | — | County |
| 6 Jul 1979 | Thunderstorm Wind | 64 mph | — | — | — | — | County |
| 7 Jul 1978 | Thunderstorm Wind | 58 mph | — | — | — | — | County |
| 18 Jul 1976 | Thunderstorm Wind | 0 mph | — | — | — | — | County |
| 12 Jul 1976 | Thunderstorm Wind | 0 mph | — | — | — | — | County |
Questions and answers
How many wind events has Lemhi County had?
57 events in the NCEI Storm Events record between 1950 and 2026. Reporting of damaging wind became far more complete after 1996, so early decades undercount.
When was the last recorded wind event in Lemhi County?
19 Jun 2025 (Thunderstorm Wind, 81 mph). Records reach NCEI about 120 days after the month ends.
What was the most damaging wind event recorded in Lemhi County?
The thunderstorm wind of 19 Jun 2025, with property damage estimated by NCEI at $70K.
How does Lemhi County compare with Idaho for wind?
1.2 events per 100 square miles against 4.3 statewide; the county holds 57 of the state's 3,559 recorded events.
Provenance
NOAA NCEI Storm Events Database, yearly details files through 30 Jun 2026, public domain. County-recorded events plus zone-recorded events whose forecast zone is named for the county (marked "Forecast zone"). Population and area from the US Census Bureau (2021). Built 1 Oct 2026. See the methodology, the Wind hub and the county page.