Alert archive / California / Napa County
Weather alerts in Napa County, California, 2026
40 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Napa County and its neighbors
Each county as a circle sized by its count in 2026. Tap one for its archive.
- Alerts
- 40
- Warnings
- 3
- Watches
- 1
- Advisories
- 36
- Busiest month
- January14 alerts
- Busiest day
- January 2, 20262 alerts
Over time
By month
The alerts
Every alert, in the order issued. Times are local, Pacific Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 1, 2:06 AM PST | Wind Advisory | MTR | 54 hr |
| Jan 1, 11:01 PM PST | Coastal Flood Warning | MTR | 39 hr |
| Jan 1, 11:01 PM PST | Coastal Flood Advisory | MTR | 4 days |
| Jan 3, 4:13 AM PST | Areal Flood Advisory | MTR | 3 hr |
| Jan 4, 1:07 AM PST | Areal Flood Advisory | MTR | 8 hr |
| Jan 5, 2:50 PM PST | Areal Flood Advisory | MTR | 5 hr |
| Jan 7, 12:56 AM PST | Extreme Cold Watch | MTR | 23 hr |
| Jan 7, 11:54 PM PST | Cold Weather Advisory | MTR | 33 hr |
| Jan 9, 1:07 PM PST | Cold Weather Advisory | MTR | 20 hr |
| Jan 10, 11:14 AM PST | Cold Weather Advisory | MTR | 22 hr |
| Jan 11, 11:36 AM PST | Cold Weather Advisory | MTR | 21 hr |
| Jan 12, 1:32 PM PST | Cold Weather Advisory | MTR | 19 hr |
| Jan 15, 10:19 PM PST | Dense Fog Advisory | MTR | 11 hr |
| Jan 28, 8:07 PM PST | Coastal Flood Advisory | MTR | 4 days |
| Feb 1, 2:04 PM PST | Coastal Flood Advisory | MTR | 23 hr |
| Feb 8, 3:37 AM PST | Dense Fog Advisory | MTR | 7 hr |
| Feb 14, 5:39 PM PST | Coastal Flood Advisory | MTR | 69 hr |
| Feb 17, 2:56 AM PST | Cold Weather Advisory | MTR | 30 hr |
| Feb 17, 7:10 AM PST | Areal Flood Advisory | MTR | 3 hr |
| Feb 18, 11:25 PM PST | Extreme Cold Warning | MTR | 34 hr |
| Feb 20, 11:49 AM PST | Cold Weather Advisory | MTR | 21 hr |
| Feb 25, 11:40 PM PST | Dense Fog Advisory | MTR | 11 hr |
| Mar 14, 12:56 PM PDT | Heat Advisory | MTR | 6 days |
| May 15, 8:54 AM PDT | Coastal Flood Advisory | MTR | 4 days |
| May 17, 1:16 AM PDT | Wind Advisory | MTR | 34 hr |
| Jun 9, 9:38 AM PDT | Red Flag Warning | MTR | 47 hr |
| Jun 9, 1:29 PM PDT | Heat Advisory | MTR | 4 days |
| Jun 9, 11:09 PM PDT | Coastal Flood Advisory | MTR | 8 days |
| Jul 7, 9:00 PM PDT | Coastal Flood Advisory | MTR | 8 days |
| Jul 13, 10:49 AM PDT | Heat Advisory | MTR | 35 hr |
| Jul 21, 10:17 AM PDT | Heat Advisory | MTR | 11 hr |
| Aug 2, 10:52 PM PDT | Heat Advisory | MTR | 23 hr |
| Aug 6, 11:07 AM PDT | Heat Advisory | MTR | 3 days |
| Aug 6, 7:45 PM PDT | Coastal Flood Advisory | MTR | 6 days |
| Aug 29, 5:04 AM PDT | Dense Fog Advisory | MTR | 4 hr |
| Sep 3, 11:21 PM PDT | Coastal Flood Advisory | MTR | 22 hr |
| Sep 7, 10:27 AM PDT | Heat Advisory | MTR | 3 days |
| Sep 8, 9:03 AM PDT | Coastal Flood Advisory | MTR | 40 hr |
| Sep 27, 8:17 PM PDT | Coastal Flood Advisory | MTR | 5 days |
| Oct 1, 9:43 AM PDT | Heat Advisory | MTR | 5 days |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Flooding | |
| Areal Flood Advisory | 4 |
| Heat | |
| Heat Advisory | 8 |
| Cold | |
| Extreme Cold Warning | 1 |
| Extreme Cold Watch | 1 |
| Cold Weather Advisory | 7 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
| Coast and beach | |
| Coastal Flood Warning | 1 |
| Coastal Flood Advisory | 11 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive2025
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.