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Tornado in Platte County, Wyoming
50 tornadoes events in the NCEI Storm Events record, 1950 to 2026. Event types counted: Tornado.
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 50 tornado events in Platte County, Wyoming, between 1950 and 2026, spread over 31 years.
June is the busiest month, with 26 of the recorded events. The last 20 years account for 18 events against 19 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 6.5% of the 765 tornado events recorded in Wyoming; its 2.4 per 100 square miles compares with 0.8 statewide.
By rating: 30 at (E)F0, 9 at (E)F1, 1 at (E)F2, 1 at (E)F3, 0 at (E)F4, 0 at (E)F5 and 9 unrated. Tornadoes before 2007 carry the original Fujita rating.
Compared with Wyoming
| Measure | Platte County | Wyoming | US |
|---|---|---|---|
| Tornado events since 1950 | 50 | 765 | 81,281 |
| Per 100 square miles | 2.4 | 0.8 | 2.3 |
| Per 10,000 residents | 57.5 | 13.2 | 2.4 |
| Deaths recorded | 0 | 4 | 6,410 |
| Busiest month | June | June | May |
By year
Seasonality
0Feb
0Mar
0Apr
1May
10Jun
26Jul
7Aug
3Sep
3Oct
0Nov
0Dec
0
Magnitude distribution
Enhanced Fujita scale wind estimates
- EF0/F0
- 65–85 mph (EF0)
- EF1/F1
- 86–110 mph (EF1)
- EF2/F2
- 111–135 mph (EF2)
- EF3/F3
- 136–165 mph (EF3)
- EF4/F4
- 166–200 mph (EF4)
- EF5/F5
- over 200 mph (EF5)
- Unrated
- no rating recorded
Tornado rating as recorded (Fujita scale before February 2007, Enhanced Fujita after).
Recorded events
All 50 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 |
|---|---|---|---|---|---|---|---|
| 23 Jun 2023 | Tornado | EF unrated | — | — | — | — | County |
| 22 Jun 2023 | Tornado | EF unrated | — | — | — | — | County |
| 10 Sep 2019 | Tornado | EF unrated | — | — | — | — | County |
| 10 Sep 2019 | Tornado | EF unrated | — | — | — | — | County |
| 4 Jul 2019 | Tornado | EF unrated | — | — | — | — | County |
| 4 Jul 2019 | Tornado | EF unrated | — | — | — | — | County |
| 28 Jul 2018 | Tornado | EF unrated | — | — | — | — | County |
| 27 May 2018 | Tornado | EF unrated | — | — | — | — | County |
| 21 May 2014 | Tornado | EF0 | — | — | — | — | County |
| 22 Jun 2013 | Tornado | EF0 | — | — | — | — | County |
| 7 Jun 2012 | Tornado | EF2 | — | — | — | 1 | County |
| 18 May 2012 | Tornado | EF0 | — | — | — | — | County |
| 4 Jul 2010 | Tornado | EF0 | — | — | — | — | County |
| 20 Jun 2010 | Tornado | EF0 | — | — | — | — | County |
| 21 May 2010 | Tornado | EF0 | — | — | — | — | County |
| 14 Jun 2009 | Tornado | EF0 | — | — | — | — | County |
| 23 May 2008 | Tornado | EF0 | — | — | — | — | County |
| 17 May 2007 | Tornado | EF0 | — | — | — | — | County |
| 29 Aug 2002 | Tornado | F0 | — | — | — | — | County |
| 29 Aug 2002 | Tornado | F0 | — | — | — | — | County |
| 3 Jun 2001 | Tornado | F0 | — | — | — | — | County |
| 16 May 2000 | Tornado | F0 | — | — | — | — | County |
| 31 May 1999 | Tornado | F0 | — | — | — | — | County |
| 9 Jun 1998 | Tornado | F0 | — | — | — | — | County |
| 10 Jun 1997 | Tornado | F0 | — | — | — | — | County |
| 2 Jun 1997 | Tornado | F0 | — | — | — | — | County |
| 14 Jul 1994 | Tornado | F1 | $50K | — | — | — | County |
| 19 May 1994 | Tornado | F0 | — | — | — | — | County |
| 1 Jul 1992 | Tornado | F0 | — | — | — | — | County |
| 29 Jun 1992 | Tornado | F0 | — | — | — | — | County |
| 29 Jun 1992 | Tornado | F0 | — | — | — | — | County |
| 29 Jun 1992 | Tornado | F0 | — | — | — | — | County |
| 2 Jun 1991 | Tornado | F1 | $250K | — | — | — | County |
| 24 May 1990 | Tornado | F0 | — | — | — | — | County |
| 13 Jun 1988 | Tornado | F0 | — | — | — | — | County |
| 18 Jun 1987 | Tornado | F1 | $25K | — | — | 1 | County |
| 17 Jun 1987 | Tornado | F0 | — | — | — | — | County |
| 18 Sep 1986 | Tornado | F1 | $250K | — | — | — | County |
| 13 Jun 1986 | Tornado | F0 | — | — | — | — | County |
| 15 Jun 1984 | Tornado | F0 | — | — | — | — | County |
| 15 Jun 1984 | Tornado | F0 | — | — | — | — | County |
| 20 Apr 1981 | Tornado | F0 | — | — | — | — | County |
| 20 Jun 1977 | Tornado | F1 | $30 | — | — | — | County |
| 20 Jun 1977 | Tornado | F1 | $30 | — | — | — | County |
| 4 Aug 1976 | Tornado | F1 | — | — | — | — | County |
| 27 Jul 1972 | Tornado | F0 | — | — | — | — | County |
| 28 Jun 1972 | Tornado | — | $250 | — | — | — | County |
| 21 Jun 1964 | Tornado | F1 | $25K | — | — | — | County |
| 14 Jun 1962 | Tornado | F1 | $25K | — | — | — | County |
| 27 Jun 1955 | Tornado | F3 | $3K | — | — | 3 | County |
Questions and answers
How many tornado events has Platte County had?
50 events in the NCEI Storm Events record between 1950 and 2026. Reporting of tornadoes became far more complete after 1996, so early decades undercount.
When was the last recorded tornado event in Platte County?
23 Jun 2023 (Tornado, EF unrated). Records reach NCEI about 120 days after the month ends.
What was the most damaging tornado event recorded in Platte County?
The tornado of 18 Sep 1986, with property damage estimated by NCEI at $250K.
How does Platte County compare with Wyoming for tornado?
2.4 events per 100 square miles against 0.8 statewide; the county holds 50 of the state's 765 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 Tornado hub and the county page.