Alert archive / California / Mendocino County
Weather alerts in Mendocino County, California, 2017
158 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Mendocino County and its neighbors
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Alerts
- 158
- Warnings
- 31
- Watches
- 25
- Advisories
- 83
- Busiest month
- January45 alerts
- Busiest day
- January 9, 20176 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Mendocino County, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 3 | 0 | 100% | 0 | ||
| Flash flood warnings | 0 | 12 | 0% |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Eureka, CA: severe thunderstorm warnings | 15 | 3 | 80% | 4 | 75% | 9 min |
| NWS Eureka, CA: flash flood warnings | 0 | 19 | 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, 11:07 AM PST | Winter Storm Warning | EKA | 64 hr |
| Jan 5, 8:29 PM PST | Hard Freeze Warning | EKA | 13 hr |
| Jan 6, 3:24 AM PST | Winter Storm Watch | EKA | 9 hr |
| Jan 6, 3:24 AM PST | Winter Weather Advisory | EKA | 33 hr |
| Jan 6, 12:36 PM PST | Winter Storm Warning | EKA | 23 hr |
| Jan 6, 2:14 PM PST | Flood Watch | EKA | 50 hr |
| Jan 6, 4:14 PM PST | River Flood Watch | EKA | 36 hr |
| Jan 7, 2:58 PM PST | River Flood Watch | EKA | 14 hr |
| Jan 7, 4:00 PM PST | Wind Advisory | EKA | 24 hr |
| Jan 8, 3:48 AM PST | River Flood Warning | EKA | 4 days |
| Jan 8, 4:27 AM PST | River Flood Advisory | EKA | 30 hr |
| Jan 8, 10:48 AM PST | Areal Flood Advisory | EKA | 214 days |
| Jan 8, 10:50 PM PST | High Wind Watch | EKA | 15 hr |
| Jan 9, 3:28 AM PST | Flood Watch | EKA | 40 hr |
| Jan 9, 4:15 AM PST | Coastal Flood Advisory | EKA | 31 hr |
| Jan 9, 9:48 AM PST | River Flood Watch | EKA | 6 hr |
| Jan 9, 1:30 PM PST | Wind Advisory | EKA | 30 hr |
| Jan 9, 3:09 PM PST | River Flood Warning | EKA | 46 hr |
| Jan 10, 11:52 AM PST | Areal Flood Advisory | EKA | 3 hr |
| Jan 10, 12:10 PM PST | Areal Flood Advisory | EKA | 3 hr |
| Jan 10, 12:22 PM PST | Areal Flood Advisory | EKA | 3 hr |
| Jan 10, 12:39 PM PST | Coastal Flood Advisory | EKA | 23 hr |
| Jan 12, 5:38 AM PST | Coastal Flood Advisory | EKA | 6 hr |
| Jan 14, 6:04 AM PST | Beach Hazards Statement | EKA | 39 hr |
| Jan 18, 9:18 AM PST | River Flood Watch | EKA | 6 hr |
| Jan 18, 9:33 AM PST | River Flood Advisory | EKA | 28 hr |
| Jan 18, 2:58 PM PST | River Flood Warning | EKA | 26 hr |
| Jan 19, 4:44 AM PST | Winter Weather Advisory | EKA | 56 hr |
| Jan 19, 8:57 AM PST | River Flood Watch | EKA | 6 hr |
| Jan 19, 11:55 AM PST | High Surf Warning | EKA | 52 hr |
| Jan 19, 2:39 PM PST | Wind Advisory | EKA | 15 hr |
| Jan 19, 2:51 PM PST | River Flood Warning | EKA | 32 hr |
| Jan 20, 9:58 AM PST | River Flood Advisory | EKA | 12 hr |
| Jan 20, 3:14 PM PST | River Flood Watch | EKA | 25 hr |
| Jan 20, 3:35 PM PST | High Wind Watch | EKA | 11 hr |
| Jan 21, 3:34 AM PST | High Wind Warning | EKA | 23 hr |
| Jan 21, 3:34 AM PST | Wind Advisory | EKA | 22 hr |
| Jan 21, 2:32 PM PST | Winter Weather Advisory | EKA | 55 hr |
| Jan 21, 3:45 PM PST | River Flood Warning | EKA | 26 hr |
| Jan 21, 3:56 PM PST | High Surf Advisory | EKA | 6 hr |
| Jan 22, 2:40 AM PST | High Surf Advisory | EKA | 49 hr |
| Jan 22, 4:59 AM PST | River Flood Advisory | EKA | 36 hr |
| Jan 22, 12:11 PM PST | Winter Weather Advisory | EKA | 33 hr |
| Jan 24, 2:57 PM PST | High Surf Advisory | EKA | 49 hr |
| Jan 25, 10:35 PM PST | Beach Hazards Statement | EKA | 41 hr |
| Feb 4, 3:02 PM PST | Wind Advisory | EKA | 34 hr |
| Feb 6, 9:38 AM PST | Wind Advisory | EKA | 25 hr |
| Feb 6, 10:45 AM PST | Flood Watch | EKA | 20 hr |
| Feb 6, 3:20 PM PST | River Flood Watch | EKA | 14 hr |
| Feb 6, 3:32 PM PST | River Flood Advisory | EKA | 36 hr |
| Feb 7, 5:18 AM PST | River Flood Warning | EKA | 3 days |
| Feb 7, 9:32 AM PST | River Flood Warning | EKA | 16 hr |
| Feb 7, 2:09 PM PST | Flood Watch | EKA | 50 hr |
| Feb 7, 2:10 PM PST | Wind Advisory | EKA | 44 hr |
| Feb 7, 2:11 PM PST | Coastal Flood Advisory | EKA | 21 hr |
| Feb 7, 3:40 PM PST | River Flood Advisory | EKA | 8 hr |
| Feb 8, 3:34 PM PST | Coastal Flood Advisory | EKA | 20 hr |
| Feb 8, 8:29 PM PST | River Flood Advisory | EKA | 36 hr |
| Feb 9, 9:47 AM PST | Areal Flood Advisory | EKA | 3 hr |
| Feb 9, 3:36 PM PST | River Flood Warning | EKA | 19 hr |
| Feb 9, 8:33 PM PST | River Flood Advisory | EKA | 9 hr |
| Feb 15, 2:32 PM PST | Flood Watch | EKA | 19 hr |
| Feb 17, 9:58 AM PST | Wind Advisory | EKA | 5 hr |
| Feb 17, 2:12 PM PST | Flood Watch | EKA | 3 days |
| Feb 19, 10:17 AM PST | River Flood Watch | EKA | 21 hr |
| Feb 19, 4:06 PM PST | High Wind Watch | EKA | 24 hr |
| Feb 20, 4:33 AM PST | River Flood Warning | EKA | 37 hr |
| Feb 20, 2:48 PM PST | River Flood Watch | EKA | 5 hr |
| Feb 20, 3:40 PM PST | High Wind Warning | EKA | 10 hr |
| Feb 20, 3:40 PM PST | Wind Advisory | EKA | 17 hr |
| Feb 20, 7:37 PM PST | River Flood Warning | EKA | 19 hr |
| Feb 20, 10:30 PM PST | River Flood Advisory | EKA | 36 hr |
| Feb 23, 2:17 AM PST | Winter Storm Watch | EKA | 24 hr |
| Feb 23, 3:06 PM PST | Winter Weather Advisory | EKA | 43 hr |
| Feb 25, 1:34 AM PST | Beach Hazards Statement | EKA | 35 hr |
| Feb 27, 2:01 PM PST | Frost Advisory | EKA | 18 hr |
| Feb 27, 2:01 PM PST | Freeze Watch | EKA | 279 days |
| Feb 27, 2:01 PM PST | Freeze Warning | EKA | 18 hr |
| Feb 28, 2:11 AM PST | Frost Advisory | EKA | 30 hr |
| Feb 28, 2:11 AM PST | Freeze Warning | EKA | 30 hr |
| Mar 1, 1:44 AM PST | Frost Advisory | EKA | 30 hr |
| Mar 1, 1:44 AM PST | Freeze Warning | EKA | 30 hr |
| Mar 2, 3:10 PM PST | Winter Storm Watch | EKA | 25 hr |
| Mar 3, 4:17 PM PST | Winter Storm Warning | EKA | 72 hr |
| Mar 3, 4:17 PM PST | Winter Weather Advisory | EKA | 41 hr |
| Mar 5, 9:34 AM PST | Winter Weather Advisory | EKA | 24 hr |
| Mar 5, 1:42 PM PST | Special Weather Statement | EKA | 18 min |
| Mar 22, 3:47 PM PDT | Frost Advisory | EKA | 16 hr |
| Mar 27, 3:43 PM PDT | Frost Advisory | EKA | 17 hr |
| Mar 30, 3:47 AM PDT | Frost Advisory | EKA | 28 hr |
| Apr 1, 9:23 PM PDT | Beach Hazards Statement | EKA | 23 hr |
| Apr 5, 3:06 PM PDT | Wind Advisory | EKA | 44 hr |
| Apr 7, 4:13 AM PDT | Winter Weather Advisory | EKA | 31 hr |
| Apr 8, 8:52 AM PDT | Special Weather Statement | EKA | 53 min |
| Apr 8, 2:50 PM PDT | Frost Advisory | EKA | 18 hr |
| Apr 8, 2:50 PM PDT | Freeze Warning | EKA | 18 hr |
| Apr 13, 3:21 PM PDT | Frost Advisory | EKA | 16 hr |
| Apr 14, 7:11 PM PDT | Frost Advisory | EKA | 13 hr |
| May 12, 2:30 PM PDT | Frost Advisory | EKA | 18 hr |
| May 13, 1:53 PM PDT | Frost Advisory | EKA | 18 hr |
| Jun 16, 3:16 AM PDT | Heat Advisory | EKA | 7 days |
| Jun 22, 8:28 PM PDT | Heat Advisory | EKA | 47 hr |
| Jun 23, 3:40 PM PDT | Coastal Flood Advisory | EKA | 10 hr |
| Jul 25, 9:23 PM PDT | Special Weather Statement | EKA | 7 min |
| Jul 25, 9:39 PM PDT | Special Weather Statement | EKA | 21 min |
| Jul 29, 12:32 PM PDT | Excessive Heat Watch | EKA | 26 hr |
| Jul 30, 2:10 PM PDT | Excessive Heat Warning | EKA | 4 days |
| Jul 30, 2:10 PM PDT | Heat Advisory | EKA | 4 days |
| Aug 9, 1:50 PM PDT | Severe Thunderstorm Warning | EKA | 23 min |
| Aug 9, 2:34 PM PDT | Special Weather Statement | EKA | 26 min |
| Aug 9, 2:50 PM PDT | Severe Thunderstorm Warning | EKA | 25 min |
| Aug 9, 3:10 PM PDT | Severe Thunderstorm Warning | EKA | 35 min |
| Aug 9, 3:43 PM PDT | Special Weather Statement | EKA | 32 min |
| Aug 9, 4:09 PM PDT | Special Weather Statement | EKA | 36 min |
| Aug 10, 4:03 PM PDT | Special Weather Statement | EKA | 42 min |
| Aug 27, 6:49 AM PDT | Heat Advisory | EKA | 13 hr |
| Aug 28, 3:17 AM PDT | Heat Advisory | EKA | 17 hr |
| Aug 29, 3:33 AM PDT | Excessive Heat Watch | EKA | 48 hr |
| Aug 30, 2:35 PM PDT | Excessive Heat Warning | EKA | 4 days |
| Sep 2, 10:41 AM PDT | Heat Advisory | EKA | 8 hr |
| Sep 3, 3:57 AM PDT | Heat Advisory | EKA | 18 hr |
| Sep 18, 7:03 PM PDT | Beach Hazards Statement | EKA | 38 hr |
| Sep 20, 3:12 AM PDT | Frost Advisory | EKA | 29 hr |
| Sep 21, 12:19 PM PDT | Frost Advisory | EKA | 20 hr |
| Sep 22, 3:08 PM PDT | Frost Advisory | EKA | 17 hr |
| Oct 4, 2:46 PM PDT | Frost Advisory | EKA | 18 hr |
| Oct 4, 2:46 PM PDT | Freeze Warning | EKA | 18 hr |
| Oct 5, 6:43 PM PDT | Frost Advisory | EKA | 13 hr |
| Oct 7, 3:43 PM PDT | Beach Hazards Statement | EKA | 27 hr |
| Oct 11, 2:35 AM PDT | Frost Advisory | EKA | 13 hr |
| Oct 11, 3:35 PM PDT | Frost Advisory | EKA | 18 hr |
| Oct 11, 3:35 PM PDT | Freeze Warning | EKA | 18 hr |
| Oct 12, 2:54 PM PDT | Frost Advisory | EKA | 19 hr |
| Oct 12, 2:54 PM PDT | Freeze Warning | EKA | 19 hr |
| Oct 13, 12:55 PM PDT | Frost Advisory | EKA | 20 hr |
| Oct 14, 3:53 PM PDT | Frost Advisory | EKA | 17 hr |
| Oct 18, 6:16 AM PDT | High Surf Advisory | EKA | 60 hr |
| Oct 20, 2:29 PM PDT | Frost Advisory | EKA | 18 hr |
| Oct 22, 3:12 AM PDT | Beach Hazards Statement | EKA | 41 hr |
| Oct 25, 7:41 PM PDT | Beach Hazards Statement | EKA | 4 days |
| Nov 4, 4:50 PM PDT | Frost Advisory | EKA | 18 hr |
| Nov 6, 1:45 AM PST | Frost Advisory | EKA | 30 hr |
| Nov 14, 3:15 AM PST | Wind Advisory | EKA | 43 hr |
| Nov 14, 11:39 AM PST | Flood Watch | EKA | 40 hr |
| Nov 15, 7:40 AM PST | High Wind Warning | EKA | 14 hr |
| Nov 15, 1:58 PM PST | Areal Flood Advisory | EKA | 2 hr |
| Nov 17, 3:06 AM PST | Frost Advisory | EKA | 30 hr |
| Nov 17, 3:06 AM PST | Freeze Warning | EKA | 30 hr |
| Nov 18, 8:34 AM PST | Frost Advisory | EKA | 25 hr |
| Nov 24, 3:09 PM PST | Wind Advisory | EKA | 45 hr |
| Nov 27, 2:20 AM PST | Frost Advisory | EKA | 25 hr |
| Nov 28, 3:09 PM PST | High Surf Advisory | EKA | 27 hr |
| Nov 29, 7:35 PM PST | High Surf Advisory | EKA | 5 hr |
| Dec 3, 2:32 AM PST | Frost Advisory | EKA | 31 hr |
| Dec 3, 8:28 AM PST | Wind Advisory | EKA | 47 hr |
| Dec 4, 2:12 AM PST | Beach Hazards Statement | EKA | 38 hr |
| Dec 12, 11:08 AM PST | Beach Hazards Statement | EKA | 59 hr |
| Dec 23, 10:08 AM PST | Beach Hazards Statement | EKA | 31 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20162018
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.