Harper County weather alerts
There are no active weather alerts for Harper County, OK right now.
Since 2016 the National Weather Service has issued about 1,291 alerts that included Harper County, roughly 129 a year. The most common is the severe thunderstorm warning (344 from 2016 to 2025). The last tornado warning was issued on September 8, 2025. 30 tornadoes have touched down in the county since 1950.
Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS
No warnings, watches or advisories include Harper County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Woods County, Woodward County, Ellis County, Clark County.
Harper County alert history
Alert events that included Harper County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 344 | 61 | October 14, 2026 |
| Wind Advisory | 130 | 9 | May 18, 2026 |
| Red Flag Warning | 128 | 30 | August 13, 2026 |
| Fire Weather Watch | 110 | 18 | August 13, 2026 |
| Severe Thunderstorm Watch | 99 | 13 | October 13, 2026 |
| Flood Advisory | 76 | 0 | September 8, 2025 |
| Dense Fog Advisory | 59 | 3 | November 7, 2026 |
| Winter Weather Advisory | 59 | 1 | January 9, 2026 |
| Freeze Warning | 37 | 1 | October 17, 2026 |
| Tornado Watch | 31 | 5 | June 25, 2026 |
| High Wind Warning | 26 | 2 | March 15, 2026 |
| Heat Advisory | 26 | 20 | September 13, 2026 |
| Flood Watch | 24 | 2 | June 25, 2026 |
| Freeze Watch | 21 | 1 | October 17, 2026 |
| Cold Weather Advisory | 20 | 2 | January 31, 2026 |
| Tornado Warning | 18 | 0 | September 8, 2025 |
| Flash Flood Warning | 14 | 0 | September 8, 2025 |
| High Wind Watch | 14 | 1 | March 15, 2026 |
| Winter Storm Watch | 12 | 1 | January 23, 2026 |
| Frost Advisory | 11 | 1 | May 7, 2026 |
| Winter Storm Warning | 10 | 1 | January 23, 2026 |
| Flood Warning | 9 | 0 | July 7, 2023 |
| Extreme Cold Warning | 5 | 1 | January 24, 2026 |
| Extreme Cold Watch | 3 | 1 | January 24, 2026 |
| Ice Storm Warning | 2 | 0 | October 26, 2020 |
| Extreme Heat Warning | 2 | 3 | July 27, 2026 |
| Blizzard Warning | 1 | 0 | January 9, 2024 |
Tornado history in Harper County
30 tornadoes have been recorded in Harper County since 1950, injuring 7 people. That ranks 75 of 77 counties in Oklahoma. The most recent was on September 8, 2025 (rated unknown).
Strongest tornadoes in Harper County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| May 15, 1991 | F3 | Harper County | 11.5 mi | 900 yd | 0 | 3 |
| May 23, 2008 | EF3 | Harper County | 5 mi | 1,100 yd | 0 | 0 |
| November 16, 2015 | EF2 | Ellis County | 27.2 mi | 400 yd | 0 | 0 |
| September 6, 1970 | F2 | Harper County | 8.8 mi | 10 yd | 0 | 0 |
| March 22, 1987 | F2 | Harper County | 1 mi | 73 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| September 8, 2025 | ? | Harper County | 0.1 mi | 20 yd | 0 | 0 |
| June 17, 2023 | EF1 | Beaver County | 8.5 mi | 300 yd | 0 | 0 |
| May 23, 2019 | EF1 | Harper County | 2 mi | 150 yd | 0 | 0 |
| May 23, 2019 | ? | Harper County | 0.5 mi | 75 yd | 0 | 0 |
| May 23, 2019 | ? | Harper County | 0.5 mi | 50 yd | 0 | 0 |
About Harper County
- Population: 3,209 (2024 estimate)
- State: Oklahoma
- NOAA Weather Radio SAME code: 040059 (how to use it)