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Wind in Slope County, North Dakota
138 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.
NCEI records 138 wind events in Slope County, North Dakota, between 1950 and 2026, spread over 32 years.
July is the busiest month, with 27 of the recorded events. The last 20 years account for 114 events against 20 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1.4% of the 9,530 wind events recorded in North Dakota; its 11.4 per 100 square miles compares with 13.8 statewide.
99 wind reports with a measured or estimated speed reached the 58 mph severe threshold, and 12 reached hurricane force (74 mph).
Some winter weather and high wind events are recorded by NWS forecast zone rather than by county; zone-recorded events whose zone is named for the county are included and marked "Forecast zone" in the table.
Compared with North Dakota
| Measure | Slope County | North Dakota | US |
|---|---|---|---|
| Wind events since 1950 | 138 | 9,530 | 701,953 |
| Per 100 square miles | 11.4 | 13.8 | 19.9 |
| Per 10,000 residents | 2,000.0 | 123.0 | 21.1 |
| Deaths recorded | 0 | 7 | 2,166 |
| Busiest month | July | July | June |
By year
Seasonality
9Feb
6Mar
13Apr
7May
13Jun
20Jul
27Aug
8Sep
7Oct
12Nov
8Dec
8
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 138 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 |
|---|---|---|---|---|---|---|---|
| 27 Jun 2026 | Thunderstorm Wind | 68 mph | — | — | — | — | County |
| 27 Jun 2026 | Thunderstorm Wind | 64 mph | — | — | — | — | County |
| 7 Jun 2026 | Thunderstorm Wind | 59 mph | — | — | — | — | County |
| 7 Jun 2026 | Thunderstorm Wind | 60 mph | — | — | — | — | County |
| 14 May 2026 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 12 Mar 2026 | High Wind | 81 mph | — | — | — | — | Forecast zone |
| 15 Jan 2026 | High Wind | 72 mph | — | — | — | — | Forecast zone |
| 17 Dec 2025 | High Wind | 91 mph | — | — | — | — | Forecast zone |
| 9 Dec 2025 | High Wind | 59 mph | — | — | — | — | Forecast zone |
| 20 Oct 2025 | High Wind | 67 mph | — | — | — | — | Forecast zone |
| 7 Aug 2025 | Thunderstorm Wind | 72 mph | — | — | — | — | County |
| 7 Aug 2025 | Thunderstorm Wind | 64 mph | — | — | — | — | County |
| 7 Aug 2025 | Thunderstorm Wind | 60 mph | — | — | — | — | County |
| 7 Aug 2025 | Thunderstorm Wind | 66 mph | — | — | — | — | County |
| 27 Jul 2025 | Thunderstorm Wind | 60 mph | — | — | — | — | County |
| 20 Jun 2025 | Thunderstorm Wind | 60 mph | — | — | — | — | County |
| 16 Jun 2025 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 15 Jun 2025 | Thunderstorm Wind | 59 mph | — | — | — | — | County |
| 16 May 2025 | High Wind | 61 mph | — | — | — | — | Forecast zone |
| 10 Mar 2025 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 19 Dec 2024 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 5 Oct 2024 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 13 Jul 2024 | Thunderstorm Wind | 85 mph | — | — | — | — | County |
| 27 Jun 2024 | Thunderstorm Wind | 58 mph | — | — | — | — | County |
| 27 Jun 2024 | Thunderstorm Wind | 60 mph | — | — | — | — | County |
| 27 Jun 2024 | Thunderstorm Wind | 81 mph | — | — | — | — | County |
| 22 Jun 2024 | Thunderstorm Wind | 69 mph | — | — | — | — | County |
| 22 Jun 2024 | Thunderstorm Wind | 60 mph | — | — | — | — | County |
| 17 Oct 2023 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 29 Jul 2023 | Thunderstorm Wind | 59 mph | — | — | — | — | County |
| 11 Jul 2023 | Thunderstorm Wind | 66 mph | — | — | — | — | County |
| 4 Jun 2023 | Thunderstorm Wind | 62 mph | — | — | — | — | County |
| 25 Dec 2022 | High Wind | 61 mph | — | — | — | — | Forecast zone |
| 5 Nov 2022 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 13 Oct 2022 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 12 Oct 2022 | High Wind | 59 mph | — | — | — | — | Forecast zone |
| 3 Jul 2022 | Thunderstorm Wind | 60 mph | — | — | — | — | County |
| 2 Jul 2022 | Thunderstorm Wind | 82 mph | — | — | — | — | County |
| 2 Jul 2022 | Thunderstorm Wind | 60 mph | — | — | — | — | County |
| 2 Jul 2022 | Thunderstorm Wind | 70 mph | — | — | — | — | County |
| 15 Jun 2022 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 12 May 2022 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 5 Apr 2022 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 1 Feb 2022 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 31 Jan 2022 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 16 Nov 2021 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 13 Nov 2021 | High Wind | 61 mph | — | — | — | — | Forecast zone |
| 11 Nov 2021 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 29 Mar 2021 | High Wind | 63 mph | — | — | — | — | Forecast zone |
| 22 Feb 2021 | High Wind | 59 mph | — | — | — | — | Forecast zone |
| 13 Jan 2021 | High Wind | 64 mph | — | — | — | — | Forecast zone |
| 22 Dec 2020 | High Wind | 40 mph | — | — | — | — | Forecast zone |
| 14 Oct 2020 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 2 Sep 2020 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 7 Jul 2020 | Thunderstorm Wind | 70 mph | — | — | — | — | County |
| 7 Jul 2020 | Thunderstorm Wind | 60 mph | — | — | — | — | County |
| 4 Jul 2020 | Thunderstorm Wind | 60 mph | — | — | — | — | County |
| 9 May 2020 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 28 Apr 2020 | High Wind | 59 mph | — | — | — | — | Forecast zone |
| 3 Mar 2020 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 14 Jul 2019 | Thunderstorm Wind | 63 mph | — | — | — | — | County |
| 27 Jan 2019 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 3 Jul 2018 | Thunderstorm Wind | 58 mph | — | — | — | — | County |
| 29 Nov 2017 | High Wind | 72 mph | — | — | — | — | Forecast zone |
| 20 Jul 2017 | Thunderstorm Wind | 92 mph | $400K | — | — | — | County |
| 20 Jul 2017 | Thunderstorm Wind | 81 mph | $90K | — | — | — | County |
| 20 Jul 2017 | Thunderstorm Wind | 81 mph | $80K | — | — | — | County |
| 20 Jul 2017 | Thunderstorm Wind | 81 mph | $75K | — | — | — | County |
| 6 Mar 2017 | High Wind | 58 mph | — | — | — | — | Forecast zone |
| 31 Oct 2016 | High Wind | 40 mph | — | — | — | — | Forecast zone |
| 5 Apr 2016 | High Wind | 40 mph | — | — | — | — | Forecast zone |
| 18 Feb 2016 | High Wind | 58 mph | — | — | — | — | Forecast zone |
| 6 Feb 2016 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 18 Nov 2015 | High Wind | 59 mph | — | — | — | — | Forecast zone |
| 11 Oct 2015 | High Wind | 58 mph | — | — | — | — | Forecast zone |
| 22 Aug 2015 | High Wind | 58 mph | — | — | — | — | Forecast zone |
| 28 Jul 2015 | High Wind | 59 mph | — | — | — | — | Forecast zone |
| 27 Jul 2015 | Thunderstorm Wind | 60 mph | — | — | — | — | County |
| 27 Jul 2015 | Thunderstorm Wind | 69 mph | $15K | — | — | — | County |
| 23 Jun 2015 | Thunderstorm Wind | 61 mph | — | — | — | — | County |
| 23 Jun 2015 | Thunderstorm Wind | 60 mph | — | — | — | — | County |
| 28 Mar 2015 | High Wind | 64 mph | — | — | — | — | Forecast zone |
| 30 Jun 2014 | High Wind | 40 mph | — | — | — | — | Forecast zone |
| 25 Jan 2014 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 20 Jan 2014 | High Wind | 58 mph | — | — | — | — | Forecast zone |
| 15 Jan 2014 | High Wind | 40 mph | — | — | — | — | Forecast zone |
| 13 Jan 2014 | High Wind | 40 mph | — | — | — | — | Forecast zone |
| 7 Sep 2013 | Thunderstorm Wind | 64 mph | — | — | — | — | County |
| 17 Oct 2012 | High Wind | 67 mph | — | — | — | — | Forecast zone |
| 20 Sep 2011 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 22 Jul 2011 | Thunderstorm Wind | 60 mph | $5K | — | — | — | County |
| 31 May 2011 | High Wind | 40 mph | — | — | — | — | Forecast zone |
| 16 May 2011 | High Wind | 40 mph | — | — | — | — | Forecast zone |
| 11 Mar 2011 | High Wind | 40 mph | — | — | — | — | Forecast zone |
| 13 Feb 2011 | High Wind | 40 mph | $20K | — | — | — | Forecast zone |
| 26 Oct 2010 | High Wind | 58 mph | — | — | — | — | Forecast zone |
| 9 Sep 2010 | Thunderstorm Wind | 70 mph | $10K | — | — | — | County |
| 9 Aug 2010 | Thunderstorm Wind | 60 mph | — | — | — | — | County |
| 18 Jun 2010 | High Wind | 59 mph | — | — | — | — | Forecast zone |
| 25 May 2010 | High Wind | 58 mph | — | — | — | — | Forecast zone |
| 4 May 2010 | High Wind | 59 mph | — | — | — | — | Forecast zone |
| 8 Apr 2010 | High Wind | 58 mph | — | — | — | — | Forecast zone |
| 27 Sep 2009 | High Wind | 40 mph | — | — | — | — | Forecast zone |
| 5 Jul 2009 | Thunderstorm Wind | 60 mph | $1K | — | — | — | County |
| 30 Jun 2009 | Thunderstorm Wind | 60 mph | — | — | — | — | County |
| 13 May 2009 | High Wind | 40 mph | — | — | — | — | Forecast zone |
| 26 Oct 2008 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 12 Jul 2008 | High Wind | 40 mph | — | — | — | — | Forecast zone |
| 11 Jul 2008 | High Wind | 40 mph | — | — | — | — | Forecast zone |
| 24 Mar 2008 | High Wind | 58 mph | — | — | — | — | Forecast zone |
| 13 Nov 2007 | High Wind | 40 mph | — | — | — | — | Forecast zone |
| 13 May 2007 | Thunderstorm Wind | 64 mph | — | — | — | — | County |
| 13 May 2007 | Thunderstorm Wind | 78 mph | $40K | — | — | — | County |
| 8 Jan 2007 | High Wind | 58 mph | — | — | — | — | Forecast zone |
| 17 Sep 2006 | High Wind | 58 mph | — | — | — | — | Forecast zone |
| 18 Apr 2006 | High Wind | 58 mph | — | — | — | — | Forecast zone |
| 21 May 2005 | High Wind | 46 mph | — | — | — | — | Forecast zone |
| 9 Mar 2005 | High Wind | 58 mph | — | — | — | — | Forecast zone |
| 6 Mar 2005 | High Wind | 62 mph | — | — | — | — | Forecast zone |
| 20 Dec 2004 | High Wind | 60 mph | — | — | — | — | Forecast zone |
| 11 Dec 2004 | High Wind | 58 mph | — | — | — | — | Forecast zone |
| 31 May 2004 | High Wind | 59 mph | — | — | — | — | Forecast zone |
| 13 Mar 2004 | High Wind | 58 mph | — | — | — | — | Forecast zone |
| 10 Mar 2004 | High Wind | 58 mph | — | — | — | — | Forecast zone |
| 29 Nov 2002 | High Wind | 47 mph | — | — | — | — | Forecast zone |
| 16 Aug 2002 | Thunderstorm Wind | 70 mph | — | — | — | — | County |
| 28 Dec 2000 | High Wind | 74 mph | — | — | — | — | Forecast zone |
| 5 Apr 2000 | High Wind | 69 mph | — | — | — | — | Forecast zone |
| 31 Oct 1999 | High Wind | 67 mph | — | — | — | — | Forecast zone |
| 26 Mar 1999 | High Wind | 54 mph | — | — | — | — | Forecast zone |
| 15 Sep 1997 | Thunderstorm Wind | 143 mph | $15K | — | — | — | County |
| 3 Aug 1996 | Thunderstorm Wind | 86 mph | $30K | $150K | — | — | County |
| 10 Feb 1996 | High Wind | 62 mph | — | — | — | — | Forecast zone |
| 27 Jun 1990 | Thunderstorm Wind | 58 mph | — | — | — | — | County |
| 17 Jul 1983 | Thunderstorm Wind | 0 mph | — | — | — | — | County |
| 17 Jul 1983 | Thunderstorm Wind | 0 mph | — | — | — | — | County |
| 15 Jul 1982 | Thunderstorm Wind | 60 mph | — | — | — | — | County |
| 11 Apr 1978 | Thunderstorm Wind | 70 mph | — | — | — | — | County |
Questions and answers
How many wind events has Slope County had?
138 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 Slope County?
27 Jun 2026 (Thunderstorm Wind, 64 mph). Records reach NCEI about 120 days after the month ends.
What was the most damaging wind event recorded in Slope County?
The thunderstorm wind of 20 Jul 2017, with property damage estimated by NCEI at $400K.
How does Slope County compare with North Dakota for wind?
11.4 events per 100 square miles against 13.8 statewide; the county holds 138 of the state's 9,530 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.