Alert archive / California / Del Norte County
Weather alerts in Del Norte County, California, 2018
93 weather alerts in 2018, 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 2018. Tap one for its archive.
- Alerts
- 93
- Warnings
- 10
- Watches
- 11
- Advisories
- 57
- Busiest month
- December20 alerts
- Busiest day
- January 16, 20183 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, 2018
| 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, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Sacramento, CA: tornado warnings | 3 | 1 | 67% | 4 | 100% | 7 min |
| NWS Sacramento, CA: severe thunderstorm warnings | 4 | 0 | 100% | 1 | 0% | |
| NWS Sacramento, CA: flash flood warnings | 5 | 0 | 100% | 0 | ||
| NWS Hanford, CA: tornado warnings | 0 | 5 | 0% | |||
| NWS Hanford, CA: severe thunderstorm warnings | 7 | 0 | 100% | 1 | 0% | |
| NWS Hanford, CA: flash flood warnings | 16 | 7 | 56% | 28 | 29% | 72 min |
| NWS Las Vegas, NV: severe thunderstorm warnings | 73 | 15 | 79% | 151 | 66% | 24 min |
| NWS Las Vegas, NV: flash flood warnings | 159 | 59 | 63% | 195 | 63% | 75 min |
| NWS Los Angeles, CA: flash flood warnings | 11 | 4 | 64% | 17 | 76% | 67 min |
| NWS Phoenix, AZ: tornado warnings | 0 | 3 | 0% | |||
| NWS Phoenix, AZ: severe thunderstorm warnings | 107 | 39 | 64% | 216 | 54% | 17 min |
| NWS Phoenix, AZ: flash flood warnings | 121 | 73 | 40% | 143 | 85% | 71 min |
| NWS San Diego, CA: tornado warnings | 0 | 1 | 0% | |||
| NWS San Diego, CA: severe thunderstorm warnings | 15 | 2 | 87% | 4 | 50% | 24 min |
| NWS San Diego, CA: flash flood warnings | 36 | 17 | 53% | 78 | 71% | 80 min |
| NWS Eureka, CA: tornado warnings | 0 | 1 | 0% | |||
| NWS Eureka, CA: flash flood warnings | 1 | 1 | 0% | 4 | 25% | 9 min |
| NWS San Francisco Bay Area, CA: flash flood warnings | 1 | 0 | 100% | 16 | 0% | |
| NWS Medford, OR: severe thunderstorm warnings | 13 | 3 | 77% | 5 | 60% | 16 min |
| NWS Reno, NV: severe thunderstorm warnings | 18 | 0 | 100% | 1 | 0% | |
| NWS Reno, NV: flash flood warnings | 19 | 5 | 74% | 13 | 46% | 57 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 11, 9:27 AM PST | Beach Hazards Statement | EKA | 18 hr |
| Jan 12, 3:48 AM PST | Beach Hazards Statement | EKA | 63 hr |
| Jan 14, 2:43 PM PST | Wind Advisory | EKA | 28 hr |
| Jan 16, 2:26 AM PST | Wind Advisory | EKA | 41 hr |
| Jan 16, 2:19 PM PST | Winter Storm Watch | EKA | 24 hr |
| Jan 16, 2:27 PM PST | High Surf Warning | EKA | 56 hr |
| Jan 17, 2:20 PM PST | Winter Weather Advisory | EKA | 53 hr |
| Jan 18, 10:55 PM PST | High Surf Advisory | EKA | 12 hr |
| Jan 20, 2:51 AM PST | Wind Advisory | EKA | 37 hr |
| Jan 23, 1:35 AM PST | Tsunami Watch | AAQ | 3 hr |
| Jan 23, 6:43 AM PST | Wind Advisory | EKA | 25 hr |
| Jan 23, 2:19 PM PST | Winter Weather Advisory | EKA | 60 hr |
| Feb 17, 3:40 AM PST | Winter Weather Advisory | EKA | 51 hr |
| Feb 18, 3:59 AM PST | Hard Freeze Watch | EKA | 22 hr |
| Feb 18, 4:17 AM PST | High Surf Advisory | EKA | 32 hr |
| Feb 19, 2:19 AM PST | Hard Freeze Warning | EKA | 31 hr |
| Feb 21, 3:21 AM PST | Winter Weather Advisory | EKA | 37 hr |
| Feb 21, 3:22 AM PST | Hard Freeze Watch | EKA | 34 hr |
| Feb 22, 1:49 PM PST | Hard Freeze Warning | EKA | 19 hr |
| Feb 27, 3:10 AM PST | Winter Storm Watch | EKA | 24 hr |
| Feb 27, 3:44 PM PST | Winter Storm Warning | EKA | 3 days |
| Mar 1, 2:53 AM PST | Winter Weather Advisory | EKA | 35 hr |
| Mar 1, 9:21 AM PST | Special Weather Statement | EKA | 24 min |
| Mar 1, 2:09 PM PST | Beach Hazards Statement | EKA | 32 hr |
| Mar 2, 9:12 PM PST | Winter Weather Advisory | EKA | 31 hr |
| Mar 4, 2:11 AM PST | Beach Hazards Statement | EKA | 38 hr |
| Mar 4, 2:17 PM PST | Frost Advisory | EKA | 19 hr |
| Mar 14, 4:19 AM PDT | Winter Weather Advisory | EKA | 56 hr |
| Mar 21, 2:37 PM PDT | Winter Storm Watch | EKA | 13 hr |
| Mar 22, 3:28 AM PDT | Winter Storm Warning | EKA | 29 hr |
| Mar 23, 5:39 AM PDT | Special Weather Statement | EKA | 36 min |
| Mar 23, 10:51 AM PDT | Winter Weather Advisory | EKA | 18 hr |
| Mar 23, 2:33 PM PDT | Winter Storm Watch | EKA | 13 hr |
| Mar 24, 3:57 AM PDT | Winter Storm Warning | EKA | 25 hr |
| Mar 25, 3:43 AM PDT | Frost Advisory | EKA | 29 hr |
| Apr 2, 2:05 PM PDT | Frost Advisory | EKA | 19 hr |
| Apr 6, 6:01 AM PDT | Wind Advisory | EKA | 33 hr |
| Apr 8, 2:11 AM PDT | High Surf Advisory | EKA | 7 hr |
| Apr 11, 1:33 PM PDT | Special Weather Statement | EKA | 12 min |
| Apr 11, 1:55 PM PDT | Special Weather Statement | EKA | 35 min |
| Apr 11, 6:11 PM PDT | Winter Weather Advisory | EKA | 18 hr |
| Apr 15, 2:11 PM PDT | Freeze Watch | EKA | 13 hr |
| Apr 18, 3:26 AM PDT | Frost Advisory | EKA | 30 hr |
| Apr 24, 3:54 AM PDT | Beach Hazards Statement | EKA | 11 hr |
| Apr 30, 2:50 AM PDT | Frost Advisory | EKA | 30 hr |
| May 11, 3:19 AM PDT | Wind Advisory | EKA | 18 hr |
| May 15, 2:14 PM PDT | Special Weather Statement | MFR | 46 min |
| Jul 11, 5:00 AM PDT | Heat Advisory | EKA | 39 hr |
| Jul 13, 3:27 AM PDT | Excessive Heat Watch | EKA | 3 days |
| Jul 13, 2:35 PM PDT | Heat Advisory | EKA | 33 hr |
| Jul 15, 4:01 AM PDT | Heat Advisory | EKA | 5 days |
| Jul 19, 3:18 PM PDT | Heat Advisory | EKA | 30 hr |
| Jul 24, 10:09 AM PDT | Beach Hazards Statement | EKA | 31 hr |
| Oct 15, 9:11 AM PDT | Beach Hazards Statement | EKA | 62 hr |
| Oct 16, 2:24 PM PDT | Frost Advisory | EKA | 19 hr |
| Oct 17, 2:09 PM PDT | Frost Advisory | EKA | 19 hr |
| Oct 18, 2:39 PM PDT | Frost Advisory | EKA | 18 hr |
| Oct 29, 2:29 PM PDT | Frost Advisory | EKA | 19 hr |
| Nov 6, 3:17 PM PST | Frost Advisory | EKA | 18 hr |
| Nov 7, 3:53 AM PST | Frost Advisory | EKA | 29 hr |
| Nov 8, 2:12 PM PST | Freeze Warning | EKA | 19 hr |
| Nov 9, 12:52 PM PST | Frost Advisory | EKA | 20 hr |
| Nov 10, 3:18 PM PST | Freeze Warning | EKA | 18 hr |
| Nov 10, 7:57 PM PST | Frost Advisory | EKA | 13 hr |
| Nov 11, 9:17 PM PST | Frost Advisory | EKA | 12 hr |
| Nov 19, 1:11 PM PST | Frost Advisory | EKA | 20 hr |
| Nov 20, 2:50 PM PST | Wind Advisory | EKA | 23 hr |
| Nov 21, 2:19 PM PST | High Wind Watch | EKA | 13 hr |
| Nov 22, 3:06 AM PST | Wind Advisory | EKA | 14 hr |
| Nov 22, 3:28 PM PST | Wind Advisory | EKA | 21 hr |
| Nov 25, 8:40 PM PST | Beach Hazards Statement | EKA | 24 hr |
| Nov 26, 3:13 PM PST | Wind Advisory | EKA | 12 hr |
| Nov 26, 9:00 PM PST | High Surf Advisory | EKA | 38 hr |
| Dec 2, 4:30 AM PST | Freeze Watch | EKA | 7 hr |
| Dec 2, 11:42 AM PST | Frost Advisory | EKA | 10 hr |
| Dec 2, 11:42 AM PST | Freeze Warning | EKA | 21 hr |
| Dec 4, 3:33 AM PST | Beach Hazards Statement | EKA | 4 days |
| Dec 5, 2:56 PM PST | Frost Advisory | EKA | 18 hr |
| Dec 6, 2:15 PM PST | Frost Advisory | EKA | 19 hr |
| Dec 13, 1:15 AM PST | Wind Advisory | EKA | 35 hr |
| Dec 14, 2:17 PM PST | High Surf Warning | EKA | 3 days |
| Dec 15, 2:52 AM PST | Wind Advisory | EKA | 34 hr |
| Dec 17, 2:11 PM PST | Wind Advisory | EKA | 23 hr |
| Dec 17, 8:57 PM PST | High Surf Advisory | EKA | 16 hr |
| Dec 19, 9:06 AM PST | High Surf Advisory | EKA | 18 hr |
| Dec 20, 3:34 AM PST | Wind Advisory | EKA | 10 hr |
| Dec 20, 12:21 PM PST | Areal Flood Advisory | EKA | 3 hr |
| Dec 21, 7:44 PM PST | Frost Advisory | EKA | 12 hr |
| Dec 22, 4:03 AM PST | Coastal Flood Advisory | EKA | 33 hr |
| Dec 23, 2:21 PM PST | Coastal Flood Advisory | EKA | 24 hr |
| Dec 24, 3:20 AM PST | Wind Advisory | EKA | 9 hr |
| Dec 27, 11:28 AM PST | Frost Advisory | EKA | 22 hr |
| Dec 28, 3:17 AM PST | Beach Hazards Statement | EKA | 41 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 | 5 |
| Flooding | |
| Areal Flood Advisory | 1 |
| Winter | |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 4 |
| Winter Weather Advisory | 9 |
| Heat | |
| Excessive Heat Watch | 1 |
| Heat Advisory | 4 |
| Cold | |
| Freeze Warning | 3 |
| Hard Freeze Warning | 2 |
| Freeze Watch | 2 |
| Hard Freeze Watch | 2 |
| Frost Advisory | 20 |
| Wind and dust | |
| High Wind Watch | 1 |
| Wind Advisory | 15 |
| Coast and beach | |
| High Surf Warning | 2 |
| Tsunami Watch | 1 |
| Coastal Flood Advisory | 2 |
| High Surf Advisory | 6 |
| Beach Hazards Statement | 10 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.