Alert archive / California / Del Norte County
Weather alerts in Del Norte County, California, 2017
154 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Del Norte County and its neighbors
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Alerts
- 154
- Warnings
- 18
- Watches
- 20
- Advisories
- 76
- Busiest month
- January38 alerts
- Busiest day
- January 9, 20178 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Del Norte County, 2017
| 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 | 1 | 0% |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS San Francisco Bay Area, CA: severe thunderstorm warnings | 0 | 2 | 0% | |||
| NWS San Francisco Bay Area, CA: flash flood warnings | 71 | 5 | 93% | 177 | 4% | 160 min |
| NWS Hanford, CA: tornado warnings | 2 | 0 | 100% | 0 | ||
| NWS Hanford, CA: severe thunderstorm warnings | 31 | 5 | 84% | 26 | 42% | 22 min |
| NWS Hanford, CA: flash flood warnings | 42 | 10 | 76% | 98 | 15% | 70 min |
| NWS Eureka, CA: severe thunderstorm warnings | 15 | 3 | 80% | 4 | 75% | 9 min |
| NWS Eureka, CA: flash flood warnings | 0 | 19 | 0% | |||
| NWS Sacramento, CA: tornado warnings | 3 | 0 | 100% | 1 | 0% | |
| NWS Sacramento, CA: severe thunderstorm warnings | 17 | 5 | 71% | 6 | 100% | 11 min |
| NWS Sacramento, CA: flash flood warnings | 2 | 0 | 100% | 29 | 0% | |
| NWS Las Vegas, NV: severe thunderstorm warnings | 55 | 13 | 76% | 75 | 49% | 21 min |
| NWS Las Vegas, NV: flash flood warnings | 127 | 44 | 65% | 94 | 73% | 105 min |
| NWS San Diego, CA: tornado warnings | 0 | 1 | 0% | |||
| NWS San Diego, CA: severe thunderstorm warnings | 25 | 10 | 60% | 45 | 47% | 26 min |
| NWS San Diego, CA: flash flood warnings | 23 | 12 | 48% | 82 | 48% | 79 min |
| NWS Los Angeles, CA: tornado warnings | 1 | 0 | 100% | 0 | ||
| NWS Los Angeles, CA: severe thunderstorm warnings | 7 | 0 | 100% | 9 | 0% | |
| NWS Los Angeles, CA: flash flood warnings | 26 | 11 | 58% | 26 | 65% | 70 min |
| NWS Phoenix, AZ: tornado warnings | 0 | 1 | 0% | |||
| NWS Phoenix, AZ: severe thunderstorm warnings | 79 | 28 | 65% | 92 | 49% | 17 min |
| NWS Phoenix, AZ: flash flood warnings | 75 | 37 | 51% | 72 | 81% | 86 min |
| NWS Reno, NV: tornado warnings | 1 | 0 | 100% | 0 | ||
| NWS Reno, NV: severe thunderstorm warnings | 26 | 3 | 88% | 15 | 20% | 4 min |
| NWS Reno, NV: flash flood warnings | 15 | 1 | 93% | 29 | 7% | 72 min |
| NWS Medford, OR: tornado warnings | 2 | 0 | 100% | 0 | ||
| NWS Medford, OR: severe thunderstorm warnings | 41 | 7 | 83% | 22 | 45% | 20 min |
| NWS Medford, OR: flash flood warnings | 3 | 0 | 100% | 4 | 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 1, 11:07 AM PST | Winter Weather Advisory | EKA | 64 hr |
| Jan 4, 3:59 AM PST | Hard Freeze Warning | EKA | 28 hr |
| Jan 5, 8:43 AM PST | Hard Freeze Watch | EKA | 12 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 7, 9:32 AM PST | Wind Advisory | EKA | 5 hr |
| Jan 7, 4:00 PM PST | Wind Advisory | EKA | 24 hr |
| Jan 8, 2:50 AM PST | Winter Weather Advisory | EKA | 43 hr |
| Jan 8, 6:34 PM PST | Wind Advisory | EKA | 8 hr |
| 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, 1:30 PM PST | High Wind Warning | EKA | 25 hr |
| Jan 9, 1:30 PM PST | Wind Advisory | EKA | 30 hr |
| Jan 9, 2:49 PM PST | Mesoscale Discussion | SPC | 86 min |
| Jan 9, 3:33 PM PST | Special Weather Statement | EKA | 42 min |
| Jan 9, 4:23 PM PST | Special Weather Statement | EKA | 22 min |
| Jan 10, 12:39 PM PST | Coastal Flood Advisory | EKA | 23 hr |
| Jan 10, 7:00 PM PST | Special Weather Statement | EKA | 15 min |
| Jan 14, 6:04 AM PST | Beach Hazards Statement | EKA | 39 hr |
| Jan 17, 3:12 AM PST | Wind Advisory | EKA | 37 hr |
| Jan 18, 11:03 AM PST | Wind Advisory | EKA | 5 hr |
| Jan 18, 1:22 PM PST | Areal Flood Advisory | EKA | 3 hr |
| Jan 19, 4:44 AM PST | Winter Weather Advisory | EKA | 56 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 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, 2:32 PM PST | Winter Weather Advisory | EKA | 55 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, 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 1, 2:58 PM PST | Wind Advisory | EKA | 19 hr |
| Feb 2, 10:42 AM PST | Wind Advisory | EKA | 23 hr |
| Feb 4, 2:12 PM PST | Wind Advisory | EKA | 44 min |
| Feb 4, 3:02 PM PST | Wind Advisory | EKA | 34 hr |
| Feb 6, 3:19 PM PST | High Wind Watch | EKA | 23 hr |
| Feb 7, 9:47 AM PST | River Flood Watch | EKA | 35 hr |
| Feb 7, 2:09 PM PST | Flood Watch | EKA | 50 hr |
| Feb 7, 2:10 PM PST | High Wind Warning | EKA | 44 hr |
| Feb 7, 2:11 PM PST | Coastal Flood Advisory | EKA | 21 hr |
| Feb 8, 3:10 PM PST | River Flood Warning | EKA | 54 hr |
| Feb 8, 3:34 PM PST | Coastal Flood Watch | EKA | 11 hr |
| Feb 8, 3:34 PM PST | Coastal Flood Advisory | EKA | 20 hr |
| Feb 9, 3:30 PM PST | Winter Weather Advisory | EKA | 21 hr |
| Feb 14, 3:45 AM PST | High Wind Watch | EKA | 23 hr |
| Feb 15, 2:52 AM PST | Wind Advisory | EKA | 25 hr |
| Feb 17, 2:12 PM PST | Flood Watch | EKA | 3 days |
| Feb 19, 4:06 PM PST | Wind Advisory | EKA | 3 hr |
| Feb 19, 7:19 PM PST | Wind Advisory | EKA | 13 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 22, 3:01 PM PST | Winter Weather Advisory | EKA | 19 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 25, 1:48 AM PST | Winter Storm Watch | EKA | 13 hr |
| Feb 25, 2:40 PM PST | Winter Weather Advisory | EKA | 36 hr |
| Feb 27, 2:01 PM PST | Freeze Watch | EKA | 279 days |
| Feb 28, 2:11 AM PST | Frost Advisory | EKA | 30 hr |
| Mar 1, 1:44 AM PST | Frost Advisory | 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 5, 12:07 PM PST | Special Weather Statement | EKA | 23 min |
| Mar 5, 1:23 PM PST | Special Weather Statement | EKA | 22 min |
| Mar 5, 1:47 PM PST | Special Weather Statement | EKA | 13 min |
| Mar 5, 2:52 PM PST | Special Weather Statement | EKA | 23 min |
| Mar 5, 11:15 PM PST | Special Weather Statement | EKA | 30 min |
| Mar 7, 3:01 AM PST | Wind Advisory | EKA | 15 hr |
| Mar 21, 11:45 AM PDT | Mesoscale Discussion | SPC | 3 hr |
| Mar 22, 2:26 PM PDT | Wind Advisory | EKA | 39 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 6, 12:03 AM PDT | Wind Advisory | EKA | 7 hr |
| Apr 6, 4:08 AM PDT | Winter Storm Watch | EKA | 24 hr |
| Apr 6, 4:23 AM PDT | High Wind Warning | EKA | 28 hr |
| Apr 6, 9:07 AM PDT | Wind Advisory | EKA | 26 hr |
| Apr 6, 9:20 AM PDT | High Surf Advisory | EKA | 30 hr |
| Apr 7, 1:21 AM PDT | Special Weather Statement | EKA | 24 min |
| Apr 7, 2:07 AM PDT | Special Weather Statement | EKA | 23 min |
| Apr 7, 2:24 AM PDT | Special Weather Statement | EKA | 36 min |
| Apr 7, 2:38 AM PDT | Special Weather Statement | MFR | 52 min |
| Apr 7, 3:23 AM PDT | Special Weather Statement | EKA | 22 min |
| Apr 7, 4:13 AM PDT | Winter Weather Advisory | EKA | 31 hr |
| Apr 7, 6:29 AM PDT | Special Weather Statement | EKA | 16 min |
| Apr 8, 2:50 PM PDT | Freeze Warning | EKA | 18 hr |
| Apr 9, 11:24 PM PDT | Special Weather Statement | EKA | 36 min |
| Apr 11, 3:17 AM PDT | Wind Advisory | EKA | 23 hr |
| Apr 12, 2:21 AM PDT | Wind Advisory | EKA | 13 hr |
| Apr 12, 3:49 AM PDT | Winter Weather Advisory | EKA | 36 hr |
| Apr 13, 3:21 PM PDT | Frost Advisory | EKA | 16 hr |
| Apr 14, 7:11 PM PDT | Frost Advisory | EKA | 13 hr |
| May 6, 4:04 PM PDT | Wind Advisory | EKA | 4 hr |
| May 7, 2:38 AM PDT | Wind Advisory | EKA | 18 hr |
| May 24, 5:07 PM PDT | Wind Advisory | EKA | 4 hr |
| Jun 16, 3:16 AM PDT | Heat Advisory | EKA | 7 days |
| Jun 22, 8:28 PM PDT | Heat Advisory | EKA | 47 hr |
| Jun 25, 10:22 PM PDT | Special Weather Statement | EKA | 8 min |
| Jun 25, 10:33 PM PDT | Special Weather Statement | EKA | 12 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 |
| Aug 10, 5:46 PM PDT | Special Weather Statement | MFR | 29 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 |
| Aug 31, 3:51 AM PDT | Heat Advisory | EKA | 32 hr |
| Sep 2, 10:41 AM PDT | Heat Advisory | EKA | 8 hr |
| Sep 3, 3:57 AM PDT | Heat Advisory | EKA | 18 hr |
| Sep 6, 3:37 PM PDT | Special Weather Statement | MFR | 23 min |
| Sep 6, 4:56 PM PDT | Special Weather Statement | EKA | 19 min |
| Sep 7, 5:34 AM PDT | Special Weather Statement | EKA | 26 min |
| Sep 7, 5:52 AM PDT | Special Weather Statement | MFR | 38 min |
| Sep 7, 5:59 AM PDT | Special Weather Statement | EKA | 46 min |
| Sep 7, 6:33 AM PDT | Special Weather Statement | MFR | 42 min |
| Sep 7, 6:49 AM PDT | Special Weather Statement | EKA | 26 min |
| Sep 7, 7:22 AM PDT | Special Weather Statement | EKA | 23 min |
| Sep 7, 8:52 AM PDT | Special Weather Statement | MFR | 23 min |
| Sep 18, 7:03 PM PDT | Beach Hazards Statement | EKA | 38 hr |
| Oct 7, 3:43 PM PDT | Beach Hazards Statement | EKA | 27 hr |
| Oct 11, 3:35 PM PDT | Frost Advisory | EKA | 18 hr |
| Oct 12, 2:54 PM PDT | Frost Advisory | EKA | 19 hr |
| Oct 13, 12:55 PM PDT | Frost Advisory | EKA | 20 hr |
| Oct 18, 6:16 AM PDT | High Surf Advisory | EKA | 60 hr |
| Oct 18, 2:37 PM PDT | Wind Advisory | EKA | 26 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 6, 1:45 AM PST | Frost Advisory | EKA | 30 hr |
| Nov 7, 3:20 AM PST | Wind Advisory | EKA | 48 hr |
| Nov 12, 5:46 PM PST | Wind Advisory | EKA | 12 hr |
| Nov 14, 3:15 AM PST | Wind Advisory | EKA | 43 hr |
| Nov 16, 3:20 PM PST | Winter Storm Warning | EKA | 90 min |
| Nov 16, 3:20 PM PST | Winter Weather Advisory | EKA | 12 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 19, 2:22 PM PST | Flood Watch | EKA | 29 hr |
| Nov 20, 4:44 AM PST | Areal Flood Advisory | EKA | 3 hr |
| Nov 24, 3:09 PM PST | Wind Advisory | EKA | 45 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, 1:54 PM PST | Freeze Warning | EKA | 20 hr |
| Dec 4, 2:12 AM PST | Beach Hazards Statement | EKA | 38 hr |
| Dec 4, 10:13 AM PST | Frost Advisory | EKA | 23 hr |
| Dec 12, 11:08 AM PST | Beach Hazards Statement | EKA | 59 hr |
| Dec 18, 2:35 PM PST | Winter Weather Advisory | EKA | 46 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.