Napa County weather alerts
There are no active weather alerts for Napa County, CA right now.
Since 2016 the National Weather Service has issued about 116 alerts that included Napa County, roughly 12 a year. The most common is the flood advisory (73 from 2016 to 2025). No tornado warnings were recorded here in that period. 1 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 Napa County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Sonoma County, Solano County, Yolo County, Lake County.
Napa County alert history
Alert events that included Napa County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Flood Advisory | 73 | 4 | February 17, 2026 |
| Flood Warning | 28 | 0 | February 5, 2025 |
| Flash Flood Warning | 11 | 0 | November 17, 2025 |
| Severe Thunderstorm Warning | 4 | 0 | February 20, 2024 |
Tornado history in Napa County
1 tornadoes have been recorded in Napa County since 1950. That ranks 44 of 58 counties in California. The most recent was on April 27, 2016 (rated EF0).
Strongest tornadoes in Napa County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| April 27, 2016 | EF0 | Napa County | 0.2 mi | 10 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| April 27, 2016 | EF0 | Napa County | 0.2 mi | 10 yd | 0 | 0 |
About Napa County
- Population: 132,727 (2024 estimate)
- State: California
- NOAA Weather Radio SAME code: 006055 (how to use it)