Alert archive / California / Sonoma County
Weather alerts in Sonoma County, California, 2025
171 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Sonoma County and its neighbors
Each county as a circle sized by its count in 2025. Tap one for its archive.
- Alerts
- 171
- Warnings
- 16
- Watches
- 8
- Advisories
- 119
- Busiest month
- February45 alerts
- Busiest day
- February 4, 202510 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Sonoma County, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 1 | 0 | 100% | 0 | ||
| Flash flood warnings | 0 | 25 | 0% |
Each office's whole area, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS San Francisco Bay Area, CA: tornado warnings | 2 | 0 | 100% | 0 | ||
| NWS San Francisco Bay Area, CA: severe thunderstorm warnings | 28 | 9 | 68% | 39 | 36% | 12 min |
| NWS San Francisco Bay Area, CA: flash flood warnings | 8 | 5 | 38% | 89 | 12% | 172 min |
An office's figures cover every county it serves, including across state lines.
Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.
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 2, 11:14 AM PST | Beach Hazards Statement | MTR | 64 hr |
| Jan 2, 11:14 AM PST | High Surf Advisory | MTR | 64 hr |
| Jan 5, 8:16 AM PST | Beach Hazards Statement | MTR | 61 hr |
| Jan 6, 1:40 AM PST | Dense Fog Advisory | MTR | 8 hr |
| Jan 6, 7:17 AM PST | Wind Advisory | MTR | 51 hr |
| Jan 6, 9:54 AM PST | Dense Fog Advisory | MTR | 2 hr |
| Jan 6, 11:55 AM PST | Dense Fog Advisory | MTR | 2 hr |
| Jan 10, 12:07 AM PST | Wind Advisory | MTR | 57 hr |
| Jan 10, 10:43 AM PST | Coastal Flood Advisory | MTR | 25 hr |
| Jan 11, 11:34 AM PST | Coastal Flood Advisory | MTR | 24 hr |
| Jan 12, 11:18 AM PST | Wind Advisory | MTR | 26 hr |
| Jan 12, 11:36 AM PST | Coastal Flood Advisory | MTR | 25 hr |
| Jan 13, 1:00 PM PST | Frost Advisory | MTR | 20 hr |
| Jan 15, 2:56 PM PST | Frost Advisory | MTR | 18 hr |
| Jan 16, 9:02 AM PST | Frost Advisory | MTR | 24 hr |
| Jan 18, 4:20 AM PST | Beach Hazards Statement | MTR | 63 hr |
| Jan 19, 2:02 AM PST | Wind Advisory | MTR | 41 hr |
| Jan 19, 5:27 AM PST | Dense Fog Advisory | MTR | 15 min |
| Jan 19, 5:42 AM PST | Dense Fog Advisory | MTR | 6 hr |
| Jan 19, 1:31 PM PST | Frost Advisory | MTR | 19 hr |
| Jan 20, 11:29 AM PST | Frost Advisory | MTR | 22 hr |
| Jan 21, 11:26 AM PST | Frost Advisory | MTR | 23 hr |
| Jan 21, 11:26 AM PST | Freeze Warning | MTR | 23 hr |
| Jan 22, 1:44 PM PST | Frost Advisory | MTR | 19 hr |
| Jan 23, 12:12 PM PST | Wind Advisory | MTR | 68 hr |
| Jan 24, 11:07 AM PST | Frost Advisory | MTR | 22 hr |
| Jan 24, 11:07 AM PST | Freeze Watch | MTR | 5 days |
| Jan 25, 2:29 AM PST | Dense Fog Advisory | MTR | 7 hr |
| Jan 26, 10:45 AM PST | Frost Advisory | MTR | 22 hr |
| Jan 27, 11:57 AM PST | Frost Advisory | MTR | 21 hr |
| Jan 28, 10:33 AM PST | Frost Advisory | MTR | 22 hr |
| Jan 30, 9:17 PM PST | Flood Watch | MTR | 65 hr |
| Feb 1, 4:04 PM PST | Areal Flood Advisory | MTR | 18 hr |
| Feb 1, 6:59 PM PST | Areal Flood Warning | MTR | 3 hr |
| Feb 2, 9:43 AM PST | Areal Flood Advisory | MTR | 4 hr |
| Feb 2, 9:54 AM PST | Areal Flood Advisory | MTR | 37 hr |
| Feb 3, 12:44 AM PST | Flood Watch | MTR | 43 hr |
| Feb 3, 8:46 AM PST | Wind Advisory | MTR | 16 hr |
| Feb 3, 10:23 PM PST | Areal Flood Advisory | MTR | 3 hr |
| Feb 3, 10:45 PM PST | Areal Flood Advisory | MTR | 7 hr |
| Feb 3, 11:10 PM PST | Areal Flood Warning | MTR | 40 hr |
| Feb 4, 2:05 AM PST | River Flood Warning | MTR | 61 hr |
| Feb 4, 7:09 AM PST | Areal Flood Advisory | MTR | 14 hr |
| Feb 4, 8:44 AM PST | Areal Flood Advisory | MTR | 11 hr |
| Feb 4, 12:54 PM PST | Frost Advisory | MTR | 20 hr |
| Feb 4, 1:36 PM PST | Severe Thunderstorm Warning | MTR | 39 min |
| Feb 4, 1:48 PM PST | Areal Flood Advisory | MTR | 6 hr |
| Feb 4, 3:05 PM PST | Areal Flood Warning | MTR | 9 hr |
| Feb 5, 9:57 AM PST | Frost Advisory | MTR | 19 hr |
| Feb 5, 12:36 PM PST | Flood Watch | MTR | 41 hr |
| Feb 6, 4:32 AM PST | Wind Advisory | MTR | 20 hr |
| Feb 6, 2:59 PM PST | Areal Flood Advisory | MTR | 9 hr |
| Feb 6, 9:55 PM PST | Areal Flood Advisory | MTR | 2 hr |
| Feb 6, 11:55 PM PST | Areal Flood Advisory | MTR | 36 hr |
| Feb 7, 12:25 AM PST | Frost Advisory | MTR | 33 hr |
| Feb 7, 12:25 AM PST | Freeze Warning | MTR | 33 hr |
| Feb 7, 11:21 PM PST | Frost Advisory | MTR | 34 hr |
| Feb 7, 11:21 PM PST | Freeze Warning | MTR | 34 hr |
| Feb 8, 11:25 PM PST | Frost Advisory | MTR | 34 hr |
| Feb 8, 11:25 PM PST | Freeze Warning | MTR | 34 hr |
| Feb 9, 11:49 PM PST | Frost Advisory | MTR | 33 hr |
| Feb 11, 9:35 AM PST | Flood Watch | MTR | 63 hr |
| Feb 11, 11:11 AM PST | High Surf Warning | MTR | 4 days |
| Feb 11, 12:08 PM PST | High Wind Watch | MTR | 23 hr |
| Feb 12, 10:51 AM PST | High Wind Warning | MTR | 31 hr |
| Feb 12, 10:51 AM PST | Wind Advisory | MTR | 41 hr |
| Feb 13, 12:52 AM PST | Areal Flood Advisory | MTR | 15 hr |
| Feb 13, 12:57 AM PST | Areal Flood Advisory | MTR | 15 hr |
| Feb 13, 1:09 AM PST | Areal Flood Advisory | MTR | 15 hr |
| Feb 13, 6:35 AM PST | Areal Flood Warning | MTR | 44 hr |
| Feb 14, 1:37 AM PST | Frost Advisory | MTR | 31 hr |
| Feb 15, 2:28 AM PST | Areal Flood Advisory | MTR | 8 hr |
| Feb 24, 12:05 PM PST | Beach Hazards Statement | MTR | 21 hr |
| Feb 25, 4:33 AM PST | Dense Fog Advisory | MTR | 5 hr |
| Feb 25, 9:08 AM PST | High Surf Advisory | MTR | 19 hr |
| Feb 27, 2:55 PM PST | Beach Hazards Statement | MTR | 4 days |
| Feb 27, 2:55 PM PST | High Surf Advisory | MTR | 4 days |
| Mar 6, 11:32 AM PST | Frost Advisory | MTR | 21 hr |
| Mar 12, 12:10 AM PDT | Wind Advisory | MTR | 20 hr |
| Mar 12, 1:28 PM PDT | Special Weather Statement | MTR | 32 min |
| Mar 15, 12:59 AM PDT | Wind Advisory | MTR | 49 hr |
| Mar 17, 2:21 AM PDT | Frost Advisory | MTR | 31 hr |
| Mar 18, 1:45 AM PDT | Frost Advisory | MTR | 31 hr |
| Mar 22, 2:55 PM PDT | Beach Hazards Statement | MTR | 4 days |
| Mar 26, 3:34 AM PDT | High Surf Advisory | MTR | 67 hr |
| Apr 2, 12:42 PM PDT | Frost Advisory | MTR | 20 hr |
| Apr 4, 1:23 PM PDT | Beach Hazards Statement | MTR | 3 days |
| Apr 21, 4:32 AM PDT | Dense Fog Advisory | MTR | 4 hr |
| May 2, 1:11 PM PDT | Wind Advisory | MTR | 40 hr |
| May 3, 12:20 PM PDT | Wind Advisory | MTR | 50 hr |
| May 8, 6:06 AM PDT | Dense Fog Advisory | MTR | 3 hr |
| May 26, 4:30 PM PDT | Coastal Flood Advisory | MTR | 9 hr |
| May 27, 2:26 AM PDT | Coastal Flood Advisory | MTR | 24 hr |
| May 27, 12:07 PM PDT | Heat Advisory | MTR | 3 days |
| May 30, 6:24 AM PDT | Dense Fog Advisory | MTR | 3 hr |
| May 30, 12:31 PM PDT | Heat Advisory | MTR | 31 hr |
| Jun 21, 8:47 PM PDT | Coastal Flood Advisory | MTR | 27 hr |
| Jun 22, 11:54 PM PDT | Coastal Flood Advisory | MTR | 25 hr |
| Jun 24, 1:10 AM PDT | Coastal Flood Advisory | MTR | 24 hr |
| Jun 25, 2:10 AM PDT | Coastal Flood Advisory | MTR | 24 hr |
| Jun 26, 2:11 AM PDT | Coastal Flood Advisory | MTR | 24 hr |
| Jul 10, 5:41 AM PDT | Dense Fog Advisory | MTR | 3 hr |
| Jul 21, 2:06 AM PDT | Coastal Flood Advisory | MTR | 22 hr |
| Jul 21, 11:35 PM PDT | Coastal Flood Advisory | MTR | 25 hr |
| Jul 23, 12:57 AM PDT | Coastal Flood Advisory | MTR | 25 hr |
| Jul 24, 1:38 AM PDT | Coastal Flood Advisory | MTR | 24 hr |
| Jul 29, 4:35 PM PDT | Tsunami Advisory | AAQ | 39 hr |
| Jul 30, 12:32 PM PDT | Beach Hazards Statement | MTR | 16 hr |
| Aug 11, 9:01 AM PDT | Beach Hazards Statement | MTR | 36 hr |
| Aug 19, 12:27 PM PDT | Heat Advisory | MTR | 4 days |
| Aug 29, 12:42 PM PDT | Beach Hazards Statement | MTR | 3 days |
| Sep 17, 3:39 AM PDT | Dense Fog Advisory | MTR | 6 hr |
| Oct 11, 1:57 AM PDT | Dense Fog Advisory | MTR | 8 hr |
| Oct 13, 3:25 PM PDT | Areal Flood Advisory | MTR | 3 hr |
| Oct 16, 2:54 AM PDT | Dense Fog Advisory | MTR | 7 hr |
| Oct 16, 3:22 AM PDT | Beach Hazards Statement | MTR | 68 hr |
| Oct 17, 4:33 AM PDT | Dense Fog Advisory | MTR | 5 hr |
| Oct 19, 5:19 AM PDT | Beach Hazards Statement | MTR | 4 days |
| Oct 23, 3:00 AM PDT | Beach Hazards Statement | MTR | 4 days |
| Oct 24, 2:22 AM PDT | Dense Fog Advisory | MTR | 8 hr |
| Oct 31, 3:07 AM PDT | Beach Hazards Statement | MTR | 4 days |
| Nov 1, 6:14 AM PDT | Dense Fog Advisory | MTR | 4 hr |
| Nov 2, 10:40 PM PST | Coastal Flood Advisory | MTR | 6 days |
| Nov 2, 11:59 PM PST | Wind Advisory | MTR | 64 hr |
| Nov 4, 1:23 AM PST | High Wind Warning | MTR | 39 hr |
| Nov 4, 2:41 PM PST | Beach Hazards Statement | MTR | 4 days |
| Nov 7, 1:42 AM PST | Dense Fog Advisory | MTR | 4 hr |
| Nov 11, 11:24 AM PST | Wind Advisory | MTR | 53 hr |
| Nov 11, 7:10 PM PST | High Wind Warning | MTR | 38 hr |
| Nov 12, 12:28 PM PST | Beach Hazards Statement | MTR | 57 hr |
| Nov 13, 3:34 AM PST | Areal Flood Advisory | MTR | 3 hr |
| Nov 13, 5:29 AM PST | Areal Flood Advisory | MTR | 9 hr |
| Nov 17, 12:19 AM PST | Areal Flood Advisory | MTR | 3 hr |
| Nov 18, 9:44 PM PST | Beach Hazards Statement | MTR | 7 days |
| Nov 24, 10:03 PM PST | Dense Fog Advisory | MTR | 13 hr |
| Nov 25, 9:47 PM PST | Dense Fog Advisory | MTR | 10 hr |
| Nov 26, 9:04 PM PST | Dense Fog Advisory | MTR | 10 hr |
| Nov 28, 3:24 AM PST | Beach Hazards Statement | MTR | 6 days |
| Nov 30, 6:54 PM PST | Coastal Flood Advisory | MTR | 7 days |
| Dec 3, 5:46 PM PST | Cold Weather Advisory | MTR | 38 hr |
| Dec 5, 8:38 PM PST | Cold Weather Advisory | MTR | 4 hr |
| Dec 9, 2:45 AM PST | Beach Hazards Statement | MTR | 4 days |
| Dec 12, 5:27 AM PST | Dense Fog Advisory | MTR | 6 hr |
| Dec 12, 8:06 PM PST | Dense Fog Advisory | MTR | 15 hr |
| Dec 13, 9:01 PM PST | Dense Fog Advisory | MTR | 14 hr |
| Dec 14, 8:31 PM PST | Dense Fog Advisory | MTR | 14 hr |
| Dec 17, 5:10 PM PST | Dense Fog Advisory | MTR | 18 hr |
| Dec 19, 2:18 PM PST | Flood Watch | MTR | 7 days |
| Dec 20, 8:27 AM PST | Dense Fog Advisory | MTR | 2 hr |
| Dec 21, 8:49 PM PST | High Wind Watch | MTR | 21 hr |
| Dec 22, 12:24 AM PST | Areal Flood Advisory | MTR | 7 hr |
| Dec 22, 1:02 AM PST | Areal Flood Advisory | MTR | 3 hr |
| Dec 22, 5:59 PM PST | High Wind Warning | MTR | 37 hr |
| Dec 22, 5:59 PM PST | Wind Advisory | MTR | 19 hr |
| Dec 23, 4:28 AM PST | Beach Hazards Statement | MTR | 72 hr |
| Dec 23, 1:09 PM PST | Wind Advisory | MTR | 18 hr |
| Dec 24, 5:08 AM PST | High Wind Warning | MTR | 29 hr |
| Dec 24, 5:08 AM PST | Wind Advisory | MTR | 29 hr |
| Dec 24, 11:46 PM PST | Mesoscale Discussion | SPC | 2 hr |
| Dec 25, 7:08 AM PST | Special Weather Statement | MTR | 37 min |
| Dec 25, 7:53 AM PST | Special Weather Statement | MTR | 37 min |
| Dec 25, 7:56 AM PST | Special Weather Statement | MTR | 34 min |
| Dec 25, 9:13 AM PST | Special Weather Statement | MTR | 47 min |
| Dec 25, 10:39 AM PST | Special Weather Statement | MTR | 36 min |
| Dec 25, 2:47 PM PST | High Surf Advisory | MTR | 31 hr |
| Dec 25, 4:11 PM PST | Mesoscale Discussion | SPC | 2 hr |
| Dec 26, 2:27 PM PST | Areal Flood Advisory | MTR | 3 hr |
| Dec 28, 11:13 AM PST | Cold Weather Advisory | MTR | 22 hr |
| Dec 29, 2:38 AM PST | Coastal Flood Advisory | MTR | 6 days |
| Dec 29, 11:36 AM PST | Cold Weather Advisory | MTR | 21 hr |
| Dec 29, 9:04 PM PST | Dense Fog Advisory | MTR | 12 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 1 |
| Mesoscale Discussion | 2 |
| Special Weather Statement | 6 |
| Flooding | |
| Areal Flood Warning | 4 |
| River Flood Warning | 1 |
| Flood Watch | 5 |
| Areal Flood Advisory | 22 |
| Heat | |
| Heat Advisory | 3 |
| Cold | |
| Freeze Warning | 4 |
| Freeze Watch | 1 |
| Cold Weather Advisory | 4 |
| Frost Advisory | 22 |
| Wind and dust | |
| High Wind Warning | 5 |
| High Wind Watch | 2 |
| Wind Advisory | 17 |
| Fog and smoke | |
| Dense Fog Advisory | 28 |
| Coast and beach | |
| High Surf Warning | 1 |
| Coastal Flood Advisory | 17 |
| High Surf Advisory | 5 |
| Tsunami Advisory | 1 |
| Beach Hazards Statement | 20 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20242026
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.