Alert archive / California / Marin County
Weather alerts in Marin County, California, 2024
142 weather alerts in 2024, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Marin County and its neighbors
Each county as a circle sized by its count in 2024. Tap one for its archive.
- Alerts
- 142
- Warnings
- 16
- Watches
- 11
- Advisories
- 101
- Busiest month
- February35 alerts
- Busiest day
- December 29, 20246 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Marin County, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 0 | 0 | ||||
| Flash flood warnings | 0 | 3 | 0% |
Each office's whole area, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Eureka, CA: severe thunderstorm warnings | 4 | 0 | 100% | 8 | 0% | |
| NWS Eureka, CA: flash flood warnings | 2 | 0 | 100% | 215 | 0% | |
| NWS Hanford, CA: tornado warnings | 4 | 0 | 100% | 2 | 0% | |
| NWS Hanford, CA: severe thunderstorm warnings | 10 | 1 | 90% | 3 | 33% | 9 min |
| NWS Hanford, CA: flash flood warnings | 7 | 0 | 100% | 9 | 0% | |
| NWS Medford, OR: severe thunderstorm warnings | 11 | 1 | 91% | 13 | 8% | 13 min |
| NWS San Francisco Bay Area, CA: tornado warnings | 4 | 0 | 100% | 1 | 0% | |
| NWS San Francisco Bay Area, CA: severe thunderstorm warnings | 6 | 1 | 83% | 37 | 3% | 3 min |
| NWS San Francisco Bay Area, CA: flash flood warnings | 6 | 1 | 83% | 83 | 1% | 63 min |
| NWS San Diego, CA: tornado warnings | 2 | 0 | 100% | 0 | ||
| NWS San Diego, CA: severe thunderstorm warnings | 35 | 4 | 89% | 13 | 46% | 12 min |
| NWS San Diego, CA: flash flood warnings | 32 | 5 | 84% | 42 | 43% | 73 min |
| NWS Phoenix, AZ: severe thunderstorm warnings | 140 | 25 | 82% | 57 | 65% | 18 min |
| NWS Phoenix, AZ: flash flood warnings | 49 | 11 | 78% | 12 | 100% | 63 min |
| NWS Sacramento, CA: tornado warnings | 1 | 0 | 100% | 0 | ||
| NWS Sacramento, CA: severe thunderstorm warnings | 10 | 0 | 100% | 1 | 0% | |
| NWS Sacramento, CA: flash flood warnings | 9 | 1 | 89% | 19 | 5% | 96 min |
| NWS Las Vegas, NV: severe thunderstorm warnings | 34 | 4 | 88% | 36 | 19% | 20 min |
| NWS Las Vegas, NV: flash flood warnings | 63 | 15 | 76% | 34 | 56% | 60 min |
| NWS Los Angeles, CA: tornado warnings | 2 | 1 | 50% | 6 | 67% | 3 min |
| NWS Los Angeles, CA: severe thunderstorm warnings | 13 | 9 | 31% | 41 | 37% | 24 min |
| NWS Los Angeles, CA: flash flood warnings | 34 | 22 | 35% | 201 | 72% | 189 min |
| NWS Reno, NV: severe thunderstorm warnings | 7 | 0 | 100% | 13 | 0% | |
| NWS Reno, NV: flash flood warnings | 10 | 0 | 100% | 7 | 0% |
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 1, 2:04 AM PST | Beach Hazards Statement | MTR | 20 hr |
| Jan 1, 5:18 AM PST | Dense Fog Advisory | MTR | 6 hr |
| Jan 2, 1:25 AM PST | High Surf Advisory | MTR | 51 hr |
| Jan 2, 2:08 AM PST | Dense Fog Advisory | MTR | 8 hr |
| Jan 4, 4:26 AM PST | Beach Hazards Statement | MTR | 42 hr |
| Jan 5, 11:14 AM PST | Frost Advisory | MTR | 47 hr |
| Jan 6, 2:34 AM PST | High Surf Advisory | MTR | 16 hr |
| Jan 6, 2:25 PM PST | Frost Advisory | MTR | 44 hr |
| Jan 9, 11:08 AM PST | Coastal Flood Advisory | MTR | 24 hr |
| Jan 10, 4:40 AM PST | Frost Advisory | MTR | 29 hr |
| Jan 10, 10:37 AM PST | Coastal Flood Advisory | MTR | 25 hr |
| Jan 11, 9:42 AM PST | Frost Advisory | MTR | 24 hr |
| Jan 11, 11:43 AM PST | Coastal Flood Advisory | MTR | 25 hr |
| Jan 15, 4:55 AM PST | Dense Fog Advisory | MTR | 6 hr |
| Jan 18, 3:12 AM PST | Dense Fog Advisory | MTR | 8 hr |
| Jan 20, 2:01 PM PST | Flood Watch | MTR | 56 hr |
| Jan 20, 6:31 PM PST | Coastal Flood Advisory | MTR | 40 hr |
| Jan 21, 3:10 AM PST | Wind Advisory | MTR | 25 hr |
| Jan 21, 5:54 PM PST | Areal Flood Advisory | MTR | 3 hr |
| Jan 21, 8:52 PM PST | Areal Flood Advisory | MTR | 11 hr |
| Jan 22, 12:55 PM PST | Coastal Flood Advisory | MTR | 23 hr |
| Jan 25, 6:08 AM PST | Dense Fog Advisory | MTR | 4 hr |
| Jan 29, 12:20 PM PST | Wind Advisory | MTR | 61 hr |
| Jan 29, 12:41 PM PST | Flood Watch | MTR | 3 days |
| Jan 30, 12:35 AM PST | High Wind Warning | MTR | 49 hr |
| Jan 30, 4:48 PM PST | High Surf Advisory | MTR | 69 hr |
| Jan 31, 5:57 PM PST | Areal Flood Advisory | MTR | 5 hr |
| Jan 31, 9:51 PM PST | Areal Flood Warning | MTR | 38 hr |
| Feb 1, 2:01 AM PST | Areal Flood Advisory | MTR | 4 hr |
| Feb 2, 1:40 AM PST | Flood Watch | MTR | 3 days |
| Feb 2, 1:45 AM PST | High Wind Warning | MTR | 3 days |
| Feb 2, 1:45 AM PST | Wind Advisory | MTR | 3 days |
| Feb 3, 8:25 AM PST | High Surf Advisory | MTR | 44 hr |
| Feb 4, 2:21 AM PST | Areal Flood Advisory | MTR | 10 hr |
| Feb 4, 9:32 AM PST | Areal Flood Warning | MTR | 33 hr |
| Feb 4, 1:21 PM PST | Coastal Flood Advisory | MTR | 20 hr |
| Feb 5, 3:21 PM PST | Coastal Flood Advisory | MTR | 5 days |
| Feb 6, 4:07 AM PST | Beach Hazards Statement | MTR | 24 hr |
| Feb 7, 3:10 AM PST | Frost Advisory | MTR | 30 hr |
| Feb 8, 12:24 PM PST | Frost Advisory | MTR | 21 hr |
| Feb 12, 4:05 AM PST | Dense Fog Advisory | MTR | 6 hr |
| Feb 14, 11:20 PM PST | High Surf Advisory | MTR | 5 days |
| Feb 16, 10:06 AM PST | Flood Watch | MTR | 4 days |
| Feb 17, 2:48 AM PST | Wind Advisory | MTR | 3 days |
| Feb 17, 4:05 PM PST | Areal Flood Advisory | MTR | 5 hr |
| Feb 17, 5:11 PM PST | Areal Flood Advisory | MTR | 4 hr |
| Feb 17, 5:32 PM PST | Areal Flood Advisory | MTR | 6 hr |
| Feb 18, 4:53 PM PST | Areal Flood Advisory | MTR | 31 hr |
| Feb 18, 6:51 PM PST | Areal Flood Advisory | MTR | 27 hr |
| Feb 19, 10:29 AM PST | Special Weather Statement | MTR | 31 min |
| Feb 19, 12:44 PM PST | Special Weather Statement | MTR | 31 min |
| Feb 19, 1:35 PM PST | Special Weather Statement | MTR | 25 min |
| Feb 20, 9:47 AM PST | Areal Flood Advisory | MTR | 6 hr |
| Feb 20, 10:16 AM PST | Areal Flood Advisory | MTR | 6 hr |
| Feb 20, 10:30 AM PST | Special Weather Statement | MTR | 30 min |
| Feb 21, 4:58 AM PST | Dense Fog Advisory | MTR | 5 hr |
| Feb 22, 5:05 AM PST | Dense Fog Advisory | MTR | 5 hr |
| Feb 25, 11:45 PM PST | Frost Advisory | MTR | 33 hr |
| Feb 27, 5:50 AM PST | Frost Advisory | MTR | 27 hr |
| Feb 28, 2:57 PM PST | High Surf Advisory | MTR | 3 days |
| Feb 29, 9:17 AM PST | Wind Advisory | MTR | 47 hr |
| Mar 2, 3:08 AM PST | Frost Advisory | MTR | 30 hr |
| Mar 3, 2:13 AM PST | Frost Advisory | MTR | 31 hr |
| Mar 12, 1:02 PM PDT | Wind Advisory | MTR | 70 hr |
| Mar 28, 2:05 AM PDT | Wind Advisory | MTR | 44 hr |
| Mar 29, 1:16 PM PDT | Areal Flood Advisory | MTR | 3 hr |
| Mar 29, 7:23 PM PDT | Special Weather Statement | MTR | 37 min |
| Apr 5, 12:46 AM PDT | Frost Advisory | MTR | 32 hr |
| May 7, 12:35 PM PDT | Wind Advisory | MTR | 43 hr |
| Jun 2, 3:08 AM PDT | Heat Advisory | MTR | 5 days |
| Jun 3, 7:57 PM PDT | Beach Hazards Statement | MTR | 3 days |
| Jun 9, 2:19 PM PDT | Heat Advisory | MTR | 54 hr |
| Jun 22, 6:44 PM PDT | Coastal Flood Advisory | MTR | 8 hr |
| Jun 23, 5:05 PM PDT | Coastal Flood Advisory | MTR | 11 hr |
| Jun 28, 12:26 PM PDT | Excessive Heat Watch | MTR | 37 hr |
| Jun 30, 1:19 AM PDT | Excessive Heat Warning | MTR | 13 days |
| Jun 30, 1:19 AM PDT | Heat Advisory | MTR | 9 days |
| Jun 30, 8:28 PM PDT | Red Flag Warning | MTR | 6 days |
| Jul 1, 2:02 PM PDT | Coastal Flood Advisory | MTR | 4 days |
| Jul 8, 1:00 AM PDT | Heat Advisory | MTR | 6 days |
| Jul 17, 12:19 PM PDT | Heat Advisory | MTR | 59 hr |
| Jul 19, 1:48 AM PDT | Coastal Flood Advisory | MTR | 4 days |
| Jul 20, 2:00 PM PDT | Heat Advisory | MTR | 5 days |
| Sep 3, 12:15 AM PDT | Heat Advisory | MTR | 4 days |
| Sep 29, 2:02 AM PDT | Heat Advisory | MTR | 9 days |
| Sep 30, 12:38 PM PDT | Excessive Heat Warning | MTR | 6 days |
| Oct 13, 2:49 PM PDT | Beach Hazards Statement | MTR | 3 days |
| Oct 14, 9:47 AM PDT | Fire Weather Watch | MTR | 24 hr |
| Oct 15, 9:46 AM PDT | Red Flag Warning | MTR | 4 days |
| Nov 1, 8:25 PM PDT | Beach Hazards Statement | MTR | 72 hr |
| Nov 4, 1:30 AM PST | Red Flag Warning | MTR | 3 days |
| Nov 11, 2:07 AM PST | High Surf Advisory | MTR | 52 hr |
| Nov 13, 1:04 AM PST | Coastal Flood Advisory | MTR | 6 days |
| Nov 13, 1:04 AM PST | High Surf Advisory | MTR | 3 days |
| Nov 14, 10:13 AM PST | Freeze Warning | MTR | 46 hr |
| Nov 17, 12:32 PM PST | Freeze Watch | MTR | 11 hr |
| Nov 17, 11:32 PM PST | Freeze Warning | MTR | 32 hr |
| Nov 18, 1:17 PM PST | Flood Watch | MTR | 5 days |
| Nov 19, 12:16 AM PST | Wind Advisory | MTR | 54 hr |
| Nov 19, 6:38 PM PST | High Surf Advisory | MTR | 59 hr |
| Nov 20, 7:27 PM PST | Areal Flood Advisory | MTR | 8 hr |
| Nov 20, 11:17 PM PST | Areal Flood Advisory | MTR | 6 hr |
| Nov 21, 3:20 AM PST | Areal Flood Advisory | MTR | 48 hr |
| Nov 21, 12:35 PM PST | Wind Advisory | MTR | 38 hr |
| Nov 25, 8:57 AM PST | Beach Hazards Statement | MTR | 48 hr |
| Nov 26, 2:06 AM PST | Frost Advisory | MTR | 55 hr |
| Nov 26, 10:51 PM PST | Frost Advisory | MTR | 58 hr |
| Nov 28, 12:10 AM PST | Frost Advisory | MTR | 57 hr |
| Dec 5, 10:49 AM PST | Tsunami Warning | AAQ | 65 min |
| Dec 8, 11:53 PM PST | Frost Advisory | MTR | 33 hr |
| Dec 10, 9:54 AM PST | Frost Advisory | MTR | 23 hr |
| Dec 11, 9:27 AM PST | Coastal Flood Advisory | MTR | 5 days |
| Dec 11, 1:54 PM PST | High Surf Advisory | MTR | 38 hr |
| Dec 12, 1:07 AM PST | High Wind Watch | MTR | 24 hr |
| Dec 12, 3:59 AM PST | Flood Watch | MTR | 3 days |
| Dec 13, 12:59 AM PST | High Wind Warning | MTR | 33 hr |
| Dec 13, 12:59 AM PST | Wind Advisory | MTR | 33 hr |
| Dec 13, 3:39 AM PST | High Surf Advisory | MTR | 39 hr |
| Dec 13, 11:24 PM PST | Areal Flood Advisory | MTR | 3 hr |
| Dec 14, 4:45 AM PST | Areal Flood Advisory | MTR | 3 hr |
| Dec 14, 11:02 AM PST | Frost Advisory | MTR | 22 hr |
| Dec 16, 10:46 PM PST | Dense Fog Advisory | MTR | 12 hr |
| Dec 17, 12:34 PM PST | Beach Hazards Statement | MTR | 53 hr |
| Dec 17, 10:01 PM PST | Dense Fog Advisory | MTR | 15 hr |
| Dec 18, 9:25 PM PST | Dense Fog Advisory | MTR | 12 hr |
| Dec 19, 11:09 AM PST | High Surf Advisory | MTR | 3 days |
| Dec 22, 1:14 AM PST | High Surf Warning | MTR | 65 hr |
| Dec 22, 12:59 PM PST | Coastal Flood Warning | MTR | 47 hr |
| Dec 22, 6:16 PM PST | Special Weather Statement | MTR | 29 min |
| Dec 24, 1:34 PM PST | Frost Advisory | MTR | 17 hr |
| Dec 24, 5:54 PM PST | High Surf Advisory | MTR | 8 hr |
| Dec 25, 2:11 AM PST | High Surf Advisory | MTR | 4 days |
| Dec 26, 7:09 PM PST | Areal Flood Advisory | MTR | 9 hr |
| Dec 26, 7:53 PM PST | Areal Flood Advisory | MTR | 11 hr |
| Dec 27, 4:18 AM PST | Areal Flood Advisory | MTR | 3 hr |
| Dec 28, 12:52 PM PST | Flood Watch | MTR | 21 hr |
| Dec 29, 2:02 AM PST | Frost Advisory | MTR | 31 hr |
| Dec 29, 4:33 AM PST | Wind Advisory | MTR | 10 hr |
| Dec 29, 7:22 AM PST | Areal Flood Advisory | MTR | 3 hr |
| Dec 29, 8:58 AM PST | Areal Flood Advisory | MTR | 3 hr |
| Dec 29, 2:05 PM PST | Frost Advisory | MTR | 44 hr |
| Dec 29, 2:05 PM PST | Freeze Warning | MTR | 44 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 | |
| Special Weather Statement | 6 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flood Watch | 7 |
| Areal Flood Advisory | 23 |
| Heat | |
| Excessive Heat Warning | 2 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 8 |
| Cold | |
| Freeze Warning | 3 |
| Freeze Watch | 1 |
| Frost Advisory | 20 |
| Wind and dust | |
| High Wind Warning | 3 |
| High Wind Watch | 1 |
| Wind Advisory | 12 |
| Fire | |
| Red Flag Warning | 3 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 11 |
| Coast and beach | |
| Coastal Flood Warning | 1 |
| High Surf Warning | 1 |
| Tsunami Warning | 1 |
| Coastal Flood Advisory | 13 |
| High Surf Advisory | 14 |
| Beach Hazards Statement | 8 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20232025
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.