Alert archive / California / Napa County
Weather alerts in Napa County, California, 2009
28 weather alerts in 2009, 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 2009. Tap one for its archive.
- Alerts
- 28
- Warnings
- 7
- Watches
- 5
- Advisories
- 16
- Busiest month
- February5 alerts
- Busiest day
- February 16, 20092 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 |
|---|---|---|---|
| Dec 31, 4:01 PM PST | Dense Fog Advisory | MTR | 17 hr |
| Jan 3, 2:49 AM PST | Freeze Warning | MTR | 29 hr |
| Jan 4, 8:20 AM PST | Freeze Warning | MTR | 80 min |
| Feb 13, 2:19 PM PST | High Wind Watch | MTR | 12 hr |
| Feb 15, 9:42 PM PST | Areal Flood Advisory | MTR | 2 hr |
| Feb 16, 7:54 AM PST | Areal Flood Advisory | MTR | 97 min |
| Feb 17, 7:18 AM PST | Areal Flood Advisory | MTR | 3 hr |
| Feb 22, 9:29 PM PST | Areal Flood Advisory | MTR | 8 hr |
| Mar 3, 6:27 AM PST | Areal Flood Advisory | MTR | 88 min |
| Mar 9, 1:17 PM PDT | Freeze Warning | MTR | 15 hr |
| Apr 14, 7:03 PM PDT | Frost Advisory | MTR | 13 hr |
| Apr 19, 4:54 PM PDT | Heat Advisory | MTR | 27 hr |
| May 15, 11:23 AM PDT | Heat Advisory | MTR | 57 hr |
| Jun 25, 2:27 PM PDT | Heat Advisory | MTR | 3 days |
| Sep 11, 9:44 AM PDT | Fire Weather Watch | MTR | 5 hr |
| Sep 11, 2:25 PM PDT | Red Flag Warning | MTR | 25 hr |
| Sep 19, 1:55 PM PDT | Excessive Heat Watch | MTR | 24 hr |
| Sep 20, 1:31 PM PDT | Heat Advisory | MTR | 44 hr |
| Oct 11, 2:46 PM PDT | High Wind Watch | MTR | 11 hr |
| Oct 12, 2:09 AM PDT | Wind Advisory | MTR | 45 hr |
| Oct 13, 6:23 AM PDT | Areal Flood Advisory | MTR | 6 hr |
| Oct 13, 2:48 PM PDT | Areal Flood Advisory | MTR | 4 hr |
| Oct 18, 8:20 AM PDT | Dense Fog Advisory | MTR | 2 hr |
| Nov 15, 3:42 AM PST | Frost Advisory | MTR | 28 hr |
| Dec 5, 2:01 PM PST | Freeze Watch | MTR | 38 hr |
| Dec 7, 4:09 AM PST | Freeze Warning | MTR | 29 hr |
| Dec 8, 9:47 AM PST | Freeze Warning | MTR | 23 hr |
| Dec 9, 11:52 AM PST | Freeze Warning | MTR | 15 hr |
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 | 7 |
| Heat | |
| Excessive Heat Watch | 1 |
| Heat Advisory | 4 |
| Cold | |
| Freeze Warning | 6 |
| Freeze Watch | 1 |
| Frost Advisory | 2 |
| Wind and dust | |
| High Wind Watch | 2 |
| Wind Advisory | 1 |
| Fire | |
| Red Flag Warning | 1 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 2 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20082010
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.