Alert archive / California / Marin County
Weather alerts in Marin County, California, 2014
73 weather alerts in 2014, 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 2014. Tap one for its archive.
- Alerts
- 73
- Warnings
- 4
- Watches
- 5
- Advisories
- 42
- Busiest month
- December33 alerts
- Busiest day
- December 3, 20147 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, 2014
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 0 | 2 | 0% | |||
| Flash flood warnings | 2 | 1 | 50% | 6 | 17% | 78 min |
Each office's whole area, 2014
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS San Francisco Bay Area, CA: severe thunderstorm warnings | 3 | 0 | 100% | 6 | 0% | |
| NWS San Francisco Bay Area, CA: flash flood warnings | 20 | 6 | 70% | 39 | 18% | 52 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 10, 10:24 PM PST | Beach Hazards Statement | MTR | 40 hr |
| Jan 12, 2:54 AM PST | High Surf Advisory | MTR | 15 hr |
| Jan 21, 12:20 PM PST | High Surf Advisory | MTR | 3 days |
| Feb 8, 4:53 AM PST | Areal Flood Advisory | MTR | 3 hr |
| Feb 8, 7:45 AM PST | Areal Flood Advisory | MTR | 4 hr |
| Feb 8, 11:43 AM PST | Areal Flood Advisory | MTR | 4 hr |
| Feb 8, 8:27 PM PST | Flash Flood Watch | MTR | 23 hr |
| Feb 8, 11:30 PM PST | Areal Flood Advisory | MTR | 7 hr |
| Feb 9, 11:13 AM PST | Areal Flood Advisory | MTR | 3 hr |
| Feb 11, 2:38 AM PST | Dense Fog Advisory | MTR | 7 hr |
| Feb 11, 2:57 PM PST | Dense Fog Advisory | MTR | 12 hr |
| Feb 26, 12:39 PM PST | Wind Advisory | MTR | 12 hr |
| Feb 27, 3:36 AM PST | High Wind Watch | MTR | 8 hr |
| Feb 27, 11:58 AM PST | Wind Advisory | MTR | 22 hr |
| Mar 11, 10:37 AM PDT | Wind Advisory | MTR | 21 hr |
| Mar 11, 12:30 PM PDT | Beach Hazards Statement | MTR | 33 hr |
| Mar 14, 12:46 PM PDT | High Surf Advisory | MTR | 67 hr |
| Mar 31, 11:13 AM PDT | Special Weather Statement | MTR | 32 min |
| Mar 31, 12:03 PM PDT | Special Weather Statement | MTR | 27 min |
| Mar 31, 12:32 PM PDT | Special Weather Statement | MTR | 28 min |
| Apr 5, 2:52 AM PDT | Beach Hazards Statement | MTR | 41 hr |
| Apr 18, 9:55 PM PDT | High Surf Advisory | MTR | 55 hr |
| May 11, 10:54 AM PDT | Excessive Heat Watch | MTR | 25 hr |
| May 12, 5:08 AM PDT | Beach Hazards Statement | MTR | 4 days |
| May 12, 12:02 PM PDT | Heat Advisory | MTR | 56 hr |
| Jul 22, 6:03 AM PDT | Special Weather Statement | MTR | 42 min |
| Aug 11, 10:58 AM PDT | Red Flag Warning | MTR | 16 hr |
| Sep 14, 3:04 AM PDT | Beach Hazards Statement | MTR | 3 days |
| Sep 17, 11:12 AM PDT | Beach Hazards Statement | MTR | 64 hr |
| Oct 1, 8:40 AM PDT | Heat Advisory | MTR | 60 hr |
| Oct 3, 8:11 AM PDT | Beach Hazards Statement | MTR | 12 hr |
| Oct 3, 10:23 AM PDT | Heat Advisory | MTR | 35 hr |
| Oct 3, 8:48 PM PDT | Beach Hazards Statement | MTR | 6 hr |
| Oct 9, 3:52 PM PDT | Beach Hazards Statement | MTR | 4 days |
| Oct 15, 1:34 PM PDT | Beach Hazards Statement | MTR | 25 hr |
| Oct 18, 7:57 PM PDT | Beach Hazards Statement | MTR | 3 days |
| Oct 24, 2:15 PM PDT | Wind Advisory | MTR | 24 hr |
| Nov 8, 7:46 PM PST | Beach Hazards Statement | MTR | 30 hr |
| Nov 10, 1:52 PM PST | Beach Hazards Statement | MTR | 62 hr |
| Nov 14, 2:13 AM PST | Dense Fog Advisory | MTR | 7 hr |
| Dec 2, 7:39 AM PST | Areal Flood Advisory | MTR | 12 hr |
| Dec 2, 9:36 PM PST | Special Weather Statement | MTR | 39 min |
| Dec 2, 9:45 PM PST | Areal Flood Advisory | MTR | 6 hr |
| Dec 2, 9:46 PM PST | Mesoscale Discussion | SPC | 119 min |
| Dec 2, 10:20 PM PST | Special Weather Statement | MTR | 40 min |
| Dec 3, 4:05 AM PST | Areal Flood Advisory | MTR | 5 hr |
| Dec 3, 8:55 AM PST | Areal Flood Advisory | MTR | 2 hr |
| Dec 3, 11:09 AM PST | Coastal Flood Advisory | MTR | 5 hr |
| Dec 8, 12:54 PM PST | Flash Flood Watch | MTR | 3 days |
| Dec 8, 1:02 PM PST | High Wind Watch | MTR | 25 hr |
| Dec 8, 2:17 PM PST | High Surf Advisory | MTR | 4 days |
| Dec 9, 2:02 PM PST | High Wind Warning | MTR | 50 hr |
| Dec 11, 3:31 AM PST | Areal Flood Advisory | MTR | 8 hr |
| Dec 11, 6:50 AM PST | Areal Flood Advisory | MTR | 3 hr |
| Dec 11, 7:15 AM PST | Flash Flood Warning | MTR | 3 hr |
| Dec 11, 10:15 AM PST | Flash Flood Warning | MTR | 90 min |
| Dec 11, 1:52 PM PST | Areal Flood Advisory | MTR | 5 hr |
| Dec 11, 6:13 PM PST | Areal Flood Advisory | MTR | 3 hr |
| Dec 11, 6:54 PM PST | Areal Flood Advisory | MTR | 6 hr |
| Dec 12, 8:53 AM PST | Areal Flood Advisory | MTR | 12 hr |
| Dec 12, 9:03 AM PST | Areal Flood Advisory | MTR | 18 hr |
| Dec 15, 3:17 PM PST | Areal Flood Advisory | MTR | 6 hr |
| Dec 15, 7:20 PM PST | Areal Flood Advisory | MTR | 85 min |
| Dec 16, 8:22 AM PST | Areal Flood Advisory | MTR | 12 hr |
| Dec 16, 9:46 AM PST | Special Weather Statement | MTR | 44 min |
| Dec 16, 2:25 PM PST | Areal Flood Advisory | MTR | 6 hr |
| Dec 16, 8:32 PM PST | Areal Flood Advisory | MTR | 3 hr |
| Dec 18, 3:32 AM PST | High Surf Advisory | MTR | 66 hr |
| Dec 19, 8:29 AM PST | Areal Flood Advisory | MTR | 3 hr |
| Dec 19, 9:15 PM PST | Coastal Flood Advisory | MTR | 17 hr |
| Dec 19, 9:15 PM PST | Coastal Flood Advisory | MTR | 4 days |
| Dec 24, 8:03 AM PST | Beach Hazards Statement | MTR | 10 hr |
| Dec 29, 3:43 AM PST | Wind Advisory | MTR | 56 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 | |
| Mesoscale Discussion | 1 |
| Special Weather Statement | 7 |
| Flooding | |
| Flash Flood Warning | 2 |
| Flash Flood Watch | 2 |
| Areal Flood Advisory | 22 |
| Heat | |
| Excessive Heat Watch | 1 |
| Heat Advisory | 3 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 2 |
| Wind Advisory | 5 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
| Coast and beach | |
| Coastal Flood Advisory | 3 |
| High Surf Advisory | 6 |
| Beach Hazards Statement | 14 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20132015
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.