Alert archive / California / Del Norte County

Weather alerts in Del Norte County, California, 2021

91 weather alerts in 2021, 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 2021. Tap one for its archive.

Alerts: 91
Warnings: 14
Watches: 17
Advisories: 58
Busiest month: January23 alerts
Busiest day: December 14, 20215 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, 2021

	Warnings	With a report	False alarm ratio
Tornado warnings	0
Severe thunderstorm warnings	0
Flash flood warnings	2	0	100%

Each office's whole area, 2021

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Eureka, CA: severe thunderstorm warnings	0			2	0%
NWS Eureka, CA: flash flood warnings	2	0	100%	1	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, 3:49 AM PST	High Surf Advisory	EKA	42 hr
Jan 2, 2:29 PM PST	High Wind Watch	EKA	13 hr
Jan 3, 3:46 AM PST	High Wind Warning	EKA	29 hr
Jan 3, 3:46 AM PST	Wind Advisory	EKA	33 hr
Jan 3, 2:03 PM PST	High Surf Advisory	EKA	51 hr
Jan 6, 3:35 AM PST	High Surf Advisory	EKA	14 hr
Jan 6, 2:30 PM PST	Wind Advisory	EKA	36 hr
Jan 7, 3:16 AM PST	High Surf Advisory	EKA	43 hr
Jan 8, 2:21 PM PST	Coastal Flood Watch	EKA	24 hr
Jan 9, 4:39 AM PST	High Surf Warning	EKA	37 hr
Jan 9, 2:24 PM PST	Coastal Flood Advisory	EKA	21 hr
Jan 11, 5:42 AM PST	Wind Advisory	EKA	39 hr
Jan 11, 1:24 PM PST	Flood Watch	EKA	43 hr
Jan 11, 2:17 PM PST	Coastal Flood Advisory	EKA	22 hr
Jan 11, 2:17 PM PST	High Surf Advisory	EKA	40 hr
Jan 22, 10:47 AM PST	Winter Weather Advisory	EKA	56 hr
Jan 24, 3:01 PM PST	Winter Storm Watch	EKA	24 hr
Jan 25, 3:00 PM PST	Winter Storm Warning	EKA	45 hr
Jan 25, 5:24 PM PST	Wind Advisory	EKA	31 hr
Jan 27, 3:53 AM PST	Winter Weather Advisory	EKA	34 hr
Jan 29, 4:52 PM PST	Flood Watch	EKA	36 hr
Jan 29, 6:09 PM PST	Wind Advisory	EKA	70 hr
Jan 31, 4:28 AM PST	Flood Watch	EKA	25 hr
Feb 1, 5:16 AM PST	Flood Watch	EKA	15 hr
Mar 2, 2:37 PM PST	Frost Advisory	EKA	18 hr
Mar 3, 3:33 AM PST	Wind Advisory	EKA	54 hr
Mar 4, 2:12 PM PST	Winter Weather Advisory	EKA	36 hr
Mar 7, 2:09 PM PST	Winter Weather Advisory	EKA	68 hr
Mar 13, 4:13 AM PST	Winter Weather Advisory	EKA	50 hr
Mar 15, 3:21 AM PDT	Freeze Watch	EKA	10 hr
Mar 15, 1:38 PM PDT	Freeze Warning	EKA	19 hr
Mar 16, 1:27 PM PDT	Frost Advisory	EKA	20 hr
Mar 20, 2:30 PM PDT	Frost Advisory	EKA	18 hr
Mar 22, 3:28 AM PDT	Frost Advisory	EKA	30 hr
Mar 25, 2:12 PM PDT	Frost Advisory	EKA	19 hr
Mar 29, 2:24 PM PDT	Frost Advisory	EKA	19 hr
Apr 8, 1:51 PM PDT	Frost Advisory	EKA	19 hr
Apr 9, 2:20 PM PDT	Frost Advisory	EKA	19 hr
Apr 10, 2:07 PM PDT	Frost Advisory	EKA	19 hr
Apr 11, 2:21 PM PDT	Frost Advisory	EKA	19 hr
Apr 14, 2:50 PM PDT	Frost Advisory	EKA	18 hr
Apr 17, 11:24 PM PDT	Dense Fog Advisory	EKA	9 hr
Apr 26, 1:55 AM PDT	Frost Advisory	EKA	30 hr
May 18, 3:43 AM PDT	Frost Advisory	EKA	29 hr
May 19, 2:35 PM PDT	Frost Advisory	EKA	18 hr
May 20, 2:09 PM PDT	Frost Advisory	EKA	19 hr
Jul 30, 4:33 PM PDT	Special Weather Statement	EKA	27 min
Jul 30, 5:02 PM PDT	Flash Flood Warning	EKA	118 min
Aug 1, 4:02 PM PDT	Flash Flood Warning	EKA	58 min
Oct 3, 5:46 AM PDT	Dense Fog Advisory	EKA	4 hr
Oct 4, 2:13 AM PDT	Dense Fog Advisory	EKA	8 hr
Oct 11, 2:11 PM PDT	Freeze Warning	EKA	19 hr
Oct 13, 2:15 PM PDT	Frost Advisory	EKA	19 hr
Oct 18, 2:08 PM PDT	Wind Advisory	EKA	36 hr
Oct 21, 3:34 AM PDT	Wind Advisory	EKA	16 hr
Oct 22, 3:02 PM PDT	Wind Advisory	EKA	47 hr
Oct 22, 3:30 PM PDT	Flood Watch	EKA	53 hr
Oct 22, 9:02 PM PDT	High Surf Warning	EKA	68 hr
Oct 25, 5:29 PM PDT	High Surf Advisory	EKA	6 hr
Nov 2, 2:42 PM PDT	Wind Advisory	EKA	38 hr
Nov 7, 3:41 AM PST	Wind Advisory	EKA	42 hr
Nov 8, 10:02 PM PST	Wind Advisory	EKA	118 min
Nov 9, 12:01 AM PST	Wind Advisory	EKA	3 hr
Nov 20, 2:32 AM PST	Frost Advisory	EKA	31 hr
Nov 21, 2:05 PM PST	Frost Advisory	EKA	20 hr
Nov 22, 2:04 PM PST	Freeze Watch	EKA	12 hr
Nov 23, 2:30 AM PST	Frost Advisory	EKA	31 hr
Nov 23, 2:30 AM PST	Freeze Warning	EKA	25 hr
Nov 28, 8:13 AM PST	Dense Fog Advisory	EKA	4 hr
Dec 8, 2:39 AM PST	Freeze Watch	EKA	25 hr
Dec 9, 12:54 PM PST	Frost Advisory	EKA	20 hr
Dec 9, 5:31 PM PST	Wind Advisory	EKA	52 hr
Dec 12, 5:17 AM PST	Winter Storm Warning	EKA	41 hr
Dec 13, 5:43 AM PST	Beach Hazards Statement	EKA	28 hr
Dec 13, 2:25 PM PST	Winter Storm Watch	EKA	24 hr
Dec 13, 6:05 PM PST	High Wind Watch	EKA	18 hr
Dec 13, 6:05 PM PST	Wind Advisory	EKA	45 hr
Dec 14, 12:16 PM PST	High Wind Warning	EKA	27 hr
Dec 14, 2:21 PM PST	Winter Storm Warning	EKA	32 hr
Dec 14, 2:21 PM PST	Winter Weather Advisory	EKA	26 hr
Dec 15, 10:09 PM PST	Winter Weather Advisory	EKA	8 hr
Dec 16, 4:21 AM PST	Frost Advisory	EKA	29 hr
Dec 23, 2:10 AM PST	Winter Storm Watch	EKA	11 hr
Dec 23, 1:17 PM PST	Winter Storm Warning	EKA	4 days
Dec 24, 10:01 AM PST	Winter Storm Watch	EKA	43 hr
Dec 25, 5:37 AM PST	Winter Weather Advisory	EKA	28 hr
Dec 26, 4:37 AM PST	Winter Weather Advisory	EKA	29 hr
Dec 26, 2:50 PM PST	Freeze Watch	EKA	20 hr
Dec 27, 2:22 PM PST	Winter Weather Advisory	EKA	20 hr
Dec 28, 2:15 PM PST	Freeze Watch	EKA	13 hr
Dec 29, 3:24 AM PST	Freeze Warning	EKA	30 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	1
Flooding
Flash Flood Warning	2
Flood Watch	5
Winter
Winter Storm Warning	4
Winter Storm Watch	4
Winter Weather Advisory	10
Cold
Freeze Warning	4
Freeze Watch	5
Frost Advisory	21
Wind and dust
High Wind Warning	2
High Wind Watch	2
Wind Advisory	15
Fog and smoke
Dense Fog Advisory	4
Coast and beach
High Surf Warning	2
Coastal Flood Watch	1
Coastal Flood Advisory	2
High Surf Advisory	6
Beach Hazards Statement	1

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2020 2022

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.