Arapahoe County weather alerts
There are no active weather alerts for Arapahoe County, CO right now.
Since 2016 the National Weather Service has issued about 1,079 alerts that included Arapahoe County, roughly 108 a year. The most common is the severe thunderstorm warning (296 from 2016 to 2025). The last tornado warning was issued on June 1, 2026. 103 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 Arapahoe County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Washington County, Elbert County, Jefferson County, Douglas County.
Arapahoe County alert history
Alert events that included Arapahoe County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 296 | 58 | September 19, 2026 |
| Red Flag Warning | 115 | 23 | June 10, 2026 |
| Flood Advisory | 97 | 31 | September 25, 2026 |
| Winter Weather Advisory | 94 | 3 | May 5, 2026 |
| Fire Weather Watch | 71 | 19 | June 10, 2026 |
| Severe Thunderstorm Watch | 68 | 8 | September 21, 2026 |
| Dense Fog Advisory | 32 | 5 | November 2, 2026 |
| Freeze Warning | 30 | 3 | October 16, 2026 |
| Winter Storm Watch | 30 | 1 | May 5, 2026 |
| Winter Storm Warning | 28 | 1 | May 5, 2026 |
| Tornado Warning | 26 | 2 | June 1, 2026 |
| High Wind Warning | 25 | 3 | March 15, 2026 |
| Frost Advisory | 21 | 1 | May 19, 2026 |
| Flash Flood Warning | 20 | 8 | September 23, 2026 |
| Flood Watch | 19 | 4 | August 15, 2026 |
| Heat Advisory | 19 | 6 | August 8, 2026 |
| High Wind Watch | 17 | 2 | March 15, 2026 |
| Cold Weather Advisory | 15 | 1 | January 23, 2026 |
| Tornado Watch | 14 | 2 | June 24, 2026 |
| Freeze Watch | 12 | 4 | October 16, 2026 |
| Blizzard Warning | 11 | 0 | March 4, 2025 |
| Flood Warning | 7 | 1 | August 15, 2026 |
| Extreme Cold Warning | 5 | 0 | January 13, 2024 |
| Snow Squall Warning | 4 | 0 | February 27, 2024 |
| Extreme Cold Watch | 2 | 0 | January 13, 2024 |
| Dust Storm Warning | 1 | 0 | May 5, 2023 |
Tornado history in Arapahoe County
103 tornadoes have been recorded in Arapahoe County since 1950, injuring 11 people. That ranks 8 of 64 counties in Colorado. The most recent was on August 10, 2025 (rated unknown).
Strongest tornadoes in Arapahoe County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| May 18, 2025 | EF2 | Arapahoe County | 4.3 mi | 200 yd | 0 | 0 |
| June 8, 1986 | F2 | Denver County | 1.1 mi | 50 yd | 0 | 6 |
| May 18, 2025 | EF2 | Elbert County | 0.9 mi | 50 yd | 0 | 0 |
| June 7, 2009 | EF1 | Arapahoe County | 5.5 mi | 100 yd | 0 | 2 |
| May 18, 2025 | EF1 | Arapahoe County | 2.6 mi | 75 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| August 10, 2025 | ? | Arapahoe County | 0.4 mi | 50 yd | 0 | 0 |
| May 18, 2025 | EF2 | Arapahoe County | 4.3 mi | 200 yd | 0 | 0 |
| May 18, 2025 | EF1 | Arapahoe County | 2.6 mi | 75 yd | 0 | 0 |
| May 18, 2025 | EF2 | Elbert County | 0.9 mi | 50 yd | 0 | 0 |
| July 6, 2023 | ? | Arapahoe County | 0 mi | 25 yd | 0 | 0 |
About Arapahoe County
- Population: 666,918 (2024 estimate)
- State: Colorado
- NOAA Weather Radio SAME code: 008005 (how to use it)
- Cities: Aurora, Centennial