Alert archive / California / San Bernardino County

Weather alerts in San Bernardino County, California, 2021

348 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

San Bernardino County and its neighbors

Each county as a circle sized by its count in 2021. Tap one for its archive.

Alerts: 348
Warnings: 124
Watches: 62
Advisories: 161
Busiest month: July56 alerts
Busiest day: July 26, 202112 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

San Bernardino County, 2021

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	18	5	72%	8	25%	11 min
Flash flood warnings	40	10	75%	49	33%	57 min

Each office's whole area, 2021

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS San Diego, CA: severe thunderstorm warnings	15	4	73%	19	32%	17 min
NWS San Diego, CA: flash flood warnings	24	7	71%	76	28%	67 min
NWS Phoenix, AZ: severe thunderstorm warnings	128	54	58%	151	83%	21 min
NWS Phoenix, AZ: flash flood warnings	255	102	60%	196	85%	87 min
NWS Las Vegas, NV: tornado warnings	0			2	0%
NWS Las Vegas, NV: severe thunderstorm warnings	77	27	65%	113	57%	22 min
NWS Las Vegas, NV: flash flood warnings	130	42	68%	118	73%	82 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 8, 2:31 AM PST	Lake Wind Advisory	VEF	39 hr
Jan 8, 12:38 PM PST	Wind Advisory	SGX	44 hr
Jan 13, 12:51 PM PST	Red Flag Warning	SGX	3 days
Jan 15, 1:02 PM PST	Wind Advisory	VEF	28 hr
Jan 16, 6:33 PM PST	High Wind Watch	SGX	42 hr
Jan 17, 1:20 PM PST	Fire Weather Watch	SGX	21 hr
Jan 18, 2:10 AM PST	Lake Wind Advisory	VEF	39 hr
Jan 18, 9:50 AM PST	Red Flag Warning	SGX	36 hr
Jan 18, 12:42 PM PST	High Wind Warning	SGX	57 hr
Jan 19, 4:53 AM PST	Winter Weather Advisory	SGX	16 hr
Jan 21, 2:33 AM PST	Wind Advisory	VEF	42 hr
Jan 21, 5:45 PM PST	Winter Weather Advisory	SGX	60 hr
Jan 22, 8:02 AM PST	Wind Advisory	SGX	14 hr
Jan 22, 12:12 PM PST	Winter Storm Watch	SGX	46 hr
Jan 23, 2:35 AM PST	Winter Storm Watch	VEF	25 hr
Jan 23, 4:56 AM PST	Wind Advisory	PSR	65 hr
Jan 23, 1:44 PM PST	Wind Advisory	VEF	53 hr
Jan 24, 3:39 AM PST	Winter Storm Warning	VEF	54 hr
Jan 24, 10:12 AM PST	Winter Storm Warning	SGX	44 hr
Jan 24, 10:12 AM PST	Winter Weather Advisory	SGX	44 hr
Jan 24, 12:38 PM PST	Wind Advisory	SGX	33 hr
Jan 25, 11:32 PM PST	Frost Advisory	SGX	9 hr
Jan 26, 1:31 PM PST	Winter Storm Watch	SGX	23 hr
Jan 27, 10:58 AM PST	Flash Flood Watch	SGX	53 hr
Jan 27, 12:58 PM PST	Winter Storm Warning	SGX	50 hr
Jan 28, 12:42 PM PST	Wind Advisory	SGX	13 hr
Jan 28, 9:32 PM PST	Areal Flood Advisory	SGX	3 hr
Jan 28, 10:16 PM PST	Areal Flood Advisory	SGX	3 hr
Feb 2, 3:30 AM PST	Wind Advisory	VEF	40 hr
Feb 4, 1:32 AM PST	Lake Wind Advisory	VEF	16 hr
Feb 11, 2:28 AM PST	High Wind Watch	VEF	35 hr
Feb 12, 2:17 AM PST	High Wind Watch	SGX	11 hr
Feb 12, 10:03 AM PST	Areal Flood Advisory	SGX	59 min
Feb 12, 1:10 PM PST	High Wind Warning	VEF	30 hr
Feb 12, 1:10 PM PST	Wind Advisory	VEF	39 hr
Feb 12, 1:19 PM PST	High Wind Warning	SGX	33 hr
Feb 12, 1:25 PM PST	Wind Advisory	PSR	33 hr
Feb 13, 11:06 AM PST	Blowing Dust Advisory	PSR	9 hr
Feb 13, 12:05 PM PST	Lake Wind Advisory	VEF	30 hr
Feb 14, 11:28 AM PST	Wind Advisory	SGX	25 hr
Feb 14, 12:28 PM PST	Wind Advisory	VEF	43 hr
Feb 15, 12:39 PM PST	High Wind Warning	SGX	21 hr
Feb 17, 11:57 AM PST	Wind Advisory	SGX	26 hr
Feb 19, 1:07 PM PST	Wind Advisory	VEF	29 hr
Feb 19, 1:21 PM PST	Wind Advisory	SGX	50 hr
Feb 20, 5:20 PM PST	Wind Advisory	SGX	22 hr
Feb 23, 2:52 AM PST	Wind Advisory	VEF	61 hr
Feb 23, 12:06 PM PST	High Wind Watch	SGX	14 hr
Feb 24, 2:25 AM PST	High Wind Warning	SGX	34 hr
Feb 26, 3:44 AM PST	High Wind Watch	SGX	23 hr
Feb 27, 1:43 AM PST	Wind Advisory	VEF	35 hr
Feb 27, 2:52 AM PST	High Wind Warning	SGX	36 hr
Feb 27, 12:27 PM PST	Wind Advisory	PSR	27 hr
Mar 2, 12:25 PM PST	Winter Weather Advisory	SGX	34 hr
Mar 7, 12:40 PM PST	Winter Storm Watch	SGX	29 hr
Mar 8, 7:47 AM PST	Wind Advisory	SGX	62 hr
Mar 8, 1:07 PM PST	Wind Advisory	VEF	33 hr
Mar 8, 1:15 PM PST	Wind Advisory	PSR	32 hr
Mar 8, 5:45 PM PST	Winter Storm Warning	SGX	4 days
Mar 10, 2:22 PM PST	Winter Weather Advisory	SGX	20 hr
Mar 11, 2:06 PM PST	Winter Weather Advisory	SGX	13 hr
Mar 13, 12:36 PM PST	High Wind Watch	VEF	13 hr
Mar 13, 1:55 PM PST	High Wind Watch	SGX	12 hr
Mar 14, 1:23 AM PST	Wind Advisory	PSR	44 hr
Mar 14, 1:28 AM PST	High Wind Warning	VEF	43 hr
Mar 14, 1:28 AM PST	Wind Advisory	VEF	43 hr
Mar 14, 1:41 AM PST	High Wind Warning	SGX	48 hr
Mar 14, 1:01 PM PDT	Winter Weather Advisory	SGX	38 hr
Mar 15, 1:01 PM PDT	Frost Advisory	SGX	19 hr
Mar 15, 9:04 PM PDT	Wind Advisory	VEF	5 hr
Mar 16, 3:57 AM PDT	Wind Advisory	SGX	4 hr
Mar 22, 3:27 AM PDT	Wind Advisory	VEF	27 hr
Mar 22, 3:27 AM PDT	Wind Advisory	VEF	58 hr
Mar 22, 3:48 AM PDT	Wind Advisory	SGX	26 hr
Mar 23, 1:56 AM PDT	Wind Advisory	PSR	33 hr
Mar 23, 12:15 PM PDT	Wind Advisory	SGX	24 hr
Mar 24, 1:04 PM PDT	Wind Advisory	VEF	31 hr
Mar 24, 1:23 PM PDT	Wind Advisory	SGX	38 hr
Mar 24, 2:03 PM PDT	Wind Advisory	PSR	39 hr
Mar 29, 1:06 AM PDT	Wind Advisory	VEF	43 hr
Mar 29, 12:46 PM PDT	Wind Advisory	SGX	50 hr
Apr 4, 1:43 AM PDT	High Wind Watch	SGX	12 hr
Apr 4, 1:28 PM PDT	Wind Advisory	SGX	40 hr
Apr 4, 1:49 PM PDT	Wind Advisory	VEF	33 hr
Apr 7, 2:48 AM PDT	Wind Advisory	SGX	45 hr
Apr 11, 2:52 PM PDT	Fire Weather Watch	VEF	23 hr
Apr 12, 2:57 AM PDT	High Wind Watch	VEF	11 hr
Apr 12, 1:47 PM PDT	High Wind Warning	VEF	36 hr
Apr 12, 1:47 PM PDT	Wind Advisory	VEF	36 hr
Apr 12, 1:48 PM PDT	Red Flag Warning	VEF	32 hr
Apr 13, 4:08 AM PDT	Wind Advisory	SGX	46 hr
Apr 16, 12:12 PM PDT	Wind Advisory	SGX	49 hr
Apr 22, 2:30 PM PDT	Fire Weather Watch	VEF	22 hr
Apr 23, 3:15 AM PDT	Wind Advisory	VEF	3 days
Apr 23, 12:38 PM PDT	Red Flag Warning	VEF	55 hr
Apr 23, 1:57 PM PDT	Wind Advisory	SGX	61 hr
Apr 25, 1:30 AM PDT	Wind Advisory	PSR	25 hr
Apr 30, 2:36 AM PDT	Wind Advisory	VEF	51 hr
Apr 30, 1:29 PM PDT	Wind Advisory	SGX	58 hr
May 15, 1:57 AM PDT	Wind Advisory	SGX	54 hr
May 17, 1:46 PM PDT	Fire Weather Watch	VEF	25 hr
May 18, 1:29 PM PDT	Wind Advisory	SGX	3 days
May 18, 1:38 PM PDT	Wind Advisory	PSR	67 hr
May 18, 3:09 PM PDT	Fire Weather Watch	VEF	37 hr
May 18, 3:09 PM PDT	Red Flag Warning	VEF	59 hr
May 18, 3:22 PM PDT	Wind Advisory	VEF	59 hr
May 20, 3:52 AM PDT	Red Flag Warning	VEF	40 hr
May 20, 11:04 AM PDT	High Wind Warning	VEF	15 hr
May 21, 3:14 AM PDT	Wind Advisory	VEF	17 hr
May 30, 11:54 AM PDT	Excessive Heat Watch	VEF	26 hr
May 31, 1:32 PM PDT	Excessive Heat Warning	VEF	5 days
Jun 1, 2:08 PM PDT	Excessive Heat Warning	SGX	3 days
Jun 2, 2:15 AM PDT	Excessive Heat Warning	PSR	67 hr
Jun 8, 2:16 AM PDT	Wind Advisory	VEF	51 hr
Jun 9, 2:23 AM PDT	Excessive Heat Watch	PSR	35 hr
Jun 9, 12:51 PM PDT	Excessive Heat Watch	SGX	5 days
Jun 9, 1:04 PM PDT	Excessive Heat Watch	VEF	24 hr
Jun 9, 2:11 PM PDT	Excessive Heat Warning	PSR	11 days
Jun 10, 1:21 PM PDT	Excessive Heat Warning	VEF	10 days
Jun 10, 1:37 PM PDT	Excessive Heat Warning	SGX	10 days
Jun 20, 2:06 PM PDT	Red Flag Warning	VEF	55 hr
Jun 22, 2:19 PM PDT	Red Flag Warning	VEF	30 hr
Jun 24, 1:13 PM PDT	Areal Flood Advisory	VEF	3 hr
Jun 24, 1:31 PM PDT	Excessive Heat Watch	SGX	24 hr
Jun 24, 2:11 PM PDT	Areal Flood Advisory	VEF	4 hr
Jun 25, 3:07 AM PDT	Excessive Heat Watch	VEF	10 hr
Jun 25, 12:50 PM PDT	Excessive Heat Warning	VEF	3 days
Jun 25, 1:05 PM PDT	Excessive Heat Warning	SGX	3 days
Jun 25, 1:05 PM PDT	Heat Advisory	SGX	3 days
Jun 25, 2:34 PM PDT	Excessive Heat Watch	PSR	12 hr
Jun 26, 2:20 AM PDT	Excessive Heat Warning	PSR	66 hr
Jun 29, 11:44 AM PDT	Severe Thunderstorm Warning	VEF	27 min
Jul 5, 12:59 PM PDT	Excessive Heat Watch	PSR	49 hr
Jul 5, 1:04 PM PDT	Excessive Heat Watch	VEF	25 hr
Jul 6, 3:25 AM PDT	Excessive Heat Watch	SGX	10 hr
Jul 6, 1:26 PM PDT	Excessive Heat Watch	SGX	24 hr
Jul 6, 1:26 PM PDT	Excessive Heat Warning	SGX	6 days
Jul 6, 1:37 PM PDT	Excessive Heat Warning	VEF	7 days
Jul 7, 1:20 PM PDT	Heat Advisory	SGX	5 days
Jul 7, 1:42 PM PDT	Excessive Heat Warning	PSR	5 days
Jul 12, 1:11 PM PDT	Flash Flood Watch	VEF	40 hr
Jul 14, 2:47 PM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Jul 18, 3:17 PM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Jul 18, 5:35 PM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Jul 18, 6:12 PM PDT	Areal Flood Advisory	SGX	32 min
Jul 18, 6:24 PM PDT	Areal Flood Advisory	VEF	47 min
Jul 18, 6:38 PM PDT	Areal Flood Advisory	SGX	52 min
Jul 18, 6:44 PM PDT	Flash Flood Warning Considerable damage threat	SGX	31 min
Jul 18, 7:10 PM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Jul 20, 4:45 PM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Jul 20, 6:27 PM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Jul 21, 12:13 PM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Jul 21, 3:07 PM PDT	Flash Flood Warning Considerable damage threat	VEF	2 hr
Jul 21, 4:38 PM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Jul 21, 5:18 PM PDT	Flash Flood Warning Considerable damage threat	VEF	2 hr
Jul 23, 1:11 PM PDT	Flash Flood Watch	VEF	3 days
Jul 25, 3:44 PM PDT	Areal Flood Advisory	VEF	3 hr
Jul 25, 4:01 PM PDT	Severe Thunderstorm Warning	PSR	29 min
Jul 25, 4:37 PM PDT	Areal Flood Advisory	VEF	3 hr
Jul 25, 6:53 PM PDT	Flash Flood Watch	SGX	23 hr
Jul 25, 6:59 PM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Jul 25, 9:55 PM PDT	Severe Thunderstorm Warning	VEF	50 min
Jul 25, 11:13 PM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Jul 26, 2:11 AM PDT	Areal Flood Advisory	SGX	2 hr
Jul 26, 7:59 AM PDT	Areal Flood Advisory	VEF	3 hr
Jul 26, 8:01 AM PDT	Areal Flood Advisory	PSR	3 hr
Jul 26, 8:12 AM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Jul 26, 9:26 AM PDT	Areal Flood Advisory	VEF	3 hr
Jul 26, 10:44 AM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Jul 26, 11:36 AM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Jul 26, 12:51 PM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Jul 27, 3:52 PM PDT	Areal Flood Advisory	SGX	74 min
Jul 27, 5:56 PM PDT	Areal Flood Advisory	VEF	2 hr
Jul 28, 12:59 PM PDT	Areal Flood Advisory	VEF	22 min
Jul 28, 1:00 PM PDT	Areal Flood Advisory	PSR	20 min
Jul 28, 1:20 PM PDT	Flash Flood Warning Considerable damage threat	PSR	3 hr
Jul 28, 1:21 PM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Jul 29, 1:13 PM PDT	Flash Flood Watch	VEF	55 hr
Jul 29, 1:26 PM PDT	Flash Flood Watch	PSR	40 hr
Jul 30, 1:14 PM PDT	Severe Thunderstorm Warning	VEF	61 min
Jul 30, 1:41 PM PDT	Areal Flood Advisory	SGX	4 hr
Jul 30, 2:48 PM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Jul 30, 2:54 PM PDT	Areal Flood Advisory	SGX	3 hr
Jul 30, 3:55 PM PDT	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 30, 4:07 PM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Jul 30, 5:13 PM PDT	Areal Flood Advisory	VEF	2 hr
Jul 31, 12:43 PM PDT	Areal Flood Advisory	SGX	3 hr
Jul 31, 2:49 PM PDT	Areal Flood Advisory	SGX	3 hr
Aug 1, 12:50 PM PDT	Excessive Heat Watch	SGX	23 hr
Aug 1, 12:50 PM PDT	Heat Advisory	SGX	4 days
Aug 1, 1:31 PM PDT	Excessive Heat Watch	PSR	24 hr
Aug 2, 1:52 AM PDT	Excessive Heat Watch	VEF	11 hr
Aug 2, 11:38 AM PDT	Excessive Heat Warning	SGX	3 days
Aug 2, 12:48 PM PDT	Excessive Heat Warning	VEF	3 days
Aug 2, 1:45 PM PDT	Excessive Heat Warning	PSR	3 days
Aug 9, 1:34 PM PDT	Flash Flood Watch	SGX	54 hr
Aug 9, 1:44 PM PDT	Areal Flood Advisory	PSR	3 hr
Aug 9, 1:49 PM PDT	Areal Flood Advisory	VEF	3 hr
Aug 9, 2:37 PM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Aug 9, 2:38 PM PDT	Flash Flood Warning Considerable damage threat	PSR	3 hr
Aug 9, 6:09 PM PDT	Areal Flood Advisory	PSR	115 min
Aug 10, 1:53 PM PDT	Areal Flood Advisory	SGX	101 min
Aug 10, 3:11 PM PDT	Areal Flood Advisory	PSR	3 hr
Aug 10, 5:13 PM PDT	Severe Thunderstorm Warning	VEF	92 min
Aug 10, 5:49 PM PDT	Dust Storm Warning	VEF	56 min
Aug 10, 6:43 PM PDT	Severe Thunderstorm Warning	VEF	47 min
Aug 10, 6:55 PM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Aug 10, 7:15 PM PDT	Dust Storm Warning	PSR	60 min
Aug 10, 11:22 PM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Aug 12, 10:32 AM PDT	Excessive Heat Watch	SGX	27 hr
Aug 13, 2:37 AM PDT	Excessive Heat Watch	VEF	12 hr
Aug 13, 1:47 PM PDT	Excessive Heat Warning	SGX	3 days
Aug 13, 2:18 PM PDT	Excessive Heat Warning	VEF	3 days
Aug 13, 2:23 PM PDT	Severe Thunderstorm Warning	VEF	52 min
Aug 13, 2:46 PM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Aug 13, 3:20 PM PDT	Severe Thunderstorm Warning	VEF	40 min
Aug 13, 4:04 PM PDT	Severe Thunderstorm Warning	VEF	41 min
Aug 13, 4:55 PM PDT	Severe Thunderstorm Warning	VEF	50 min
Aug 13, 7:20 PM PDT	Areal Flood Advisory	SGX	115 min
Aug 24, 1:20 PM PDT	Excessive Heat Warning	PSR	5 days
Aug 24, 1:27 PM PDT	Excessive Heat Watch	VEF	11 hr
Aug 24, 1:30 PM PDT	Excessive Heat Warning	SGX	5 days
Aug 24, 1:30 PM PDT	Heat Advisory	SGX	5 days
Aug 25, 12:50 AM PDT	Excessive Heat Warning	VEF	6 days
Aug 26, 2:07 AM PDT	Excessive Heat Warning	VEF	5 days
Aug 29, 4:24 PM PDT	Areal Flood Advisory	SGX	3 hr
Aug 29, 4:29 PM PDT	Flash Flood Warning Considerable damage threat	PSR	3 hr
Aug 29, 4:33 PM PDT	Flash Flood Warning Considerable damage threat	VEF	2 hr
Aug 29, 6:53 PM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Aug 30, 1:43 AM PDT	Flash Flood Watch	PSR	3 days
Aug 30, 2:38 AM PDT	Flash Flood Watch	SGX	42 hr
Aug 30, 3:28 AM PDT	Flash Flood Watch	VEF	59 hr
Aug 30, 11:30 AM PDT	Areal Flood Advisory	SGX	3 hr
Aug 30, 1:17 PM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Aug 30, 2:37 PM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Aug 30, 2:55 PM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Aug 30, 4:56 PM PDT	Dust Storm Advisory	PSR	94 min
Aug 31, 5:25 PM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Aug 31, 7:08 PM PDT	Flash Flood Warning Considerable damage threat	VEF	3 hr
Sep 3, 1:17 PM PDT	Excessive Heat Watch	VEF	37 hr
Sep 3, 1:18 PM PDT	Excessive Heat Watch	SGX	37 hr
Sep 3, 1:18 PM PDT	Heat Advisory	SGX	9 days
Sep 5, 1:50 AM PDT	Excessive Heat Warning	SGX	4 days
Sep 5, 2:02 AM PDT	Excessive Heat Warning	VEF	5 days
Sep 6, 12:12 PM PDT	Excessive Heat Warning	PSR	3 days
Sep 9, 1:05 PM PDT	Severe Thunderstorm Warning	SGX	40 min
Sep 9, 1:19 PM PDT	Severe Thunderstorm Warning Considerable damage threat	SGX	22 min
Sep 9, 1:47 PM PDT	Severe Thunderstorm Warning	VEF	58 min
Sep 9, 2:31 PM PDT	Severe Thunderstorm Warning	VEF	59 min
Sep 9, 2:34 PM PDT	Flash Flood Warning Considerable damage threat	SGX	3 hr
Sep 9, 2:44 PM PDT	Mesoscale Discussion	SPC	2 hr
Sep 9, 2:54 PM PDT	Severe Thunderstorm Warning	SGX	66 min
Sep 9, 3:10 PM PDT	Severe Thunderstorm Warning	SGX	50 min
Sep 9, 3:29 PM PDT	Flash Flood Warning Considerable damage threat	SGX	2 hr
Sep 9, 4:35 PM PDT	Severe Thunderstorm Warning	SGX	55 min
Sep 10, 1:48 AM PDT	Excessive Heat Warning	VEF	4 days
Sep 10, 2:19 AM PDT	Excessive Heat Warning	PSR	4 days
Sep 20, 12:33 PM PDT	Heat Advisory	SGX	55 hr
Sep 24, 9:03 AM PDT	Flash Flood Watch	PSR	10 hr
Sep 24, 1:49 PM PDT	Areal Flood Advisory	VEF	3 hr
Sep 24, 2:11 PM PDT	Severe Thunderstorm Warning	VEF	49 min
Sep 24, 2:18 PM PDT	Areal Flood Advisory	VEF	3 hr
Oct 7, 3:06 PM PDT	Wind Advisory	VEF	29 hr
Oct 9, 1:16 AM PDT	High Wind Watch	VEF	25 hr
Oct 9, 12:11 PM PDT	Wind Advisory	PSR	62 hr
Oct 9, 12:17 PM PDT	High Wind Watch	SGX	15 hr
Oct 9, 12:17 PM PDT	Wind Advisory	SGX	63 hr
Oct 10, 1:47 AM PDT	High Wind Warning	VEF	51 hr
Oct 10, 1:47 AM PDT	Wind Advisory	VEF	60 hr
Oct 10, 2:54 AM PDT	High Wind Warning	SGX	48 hr
Oct 10, 12:58 PM PDT	High Wind Warning	PSR	36 hr
Oct 11, 2:46 AM PDT	Frost Advisory	SGX	9 hr
Oct 11, 8:08 AM PDT	Blowing Dust Advisory	PSR	16 hr
Oct 11, 12:29 PM PDT	Blowing Dust Advisory	SGX	10 hr
Oct 12, 12:57 PM PDT	Frost Advisory	SGX	20 hr
Oct 16, 2:33 AM PDT	Wind Advisory	VEF	62 hr
Oct 23, 2:14 PM PDT	Wind Advisory	VEF	54 hr
Oct 24, 1:38 PM PDT	Wind Advisory	SGX	36 hr
Oct 25, 4:13 PM PDT	Areal Flood Advisory	SGX	4 hr
Oct 25, 4:20 PM PDT	Flash Flood Warning Considerable damage threat	SGX	3 hr
Oct 28, 2:50 AM PDT	Wind Advisory	SGX	12 hr
Nov 5, 1:35 PM PDT	Dense Fog Advisory	SGX	11 hr
Nov 7, 2:45 AM PST	Dense Fog Advisory	SGX	6 hr
Nov 9, 12:54 AM PST	Wind Advisory	VEF	18 hr
Nov 19, 4:00 AM PST	Dense Fog Advisory	SGX	5 hr
Nov 19, 10:48 AM PST	Fire Weather Watch	SGX	3 hr
Nov 19, 1:35 PM PST	Red Flag Warning	SGX	53 hr
Nov 20, 1:40 AM PST	Wind Advisory	VEF	40 hr
Nov 20, 3:00 AM PST	Dense Fog Advisory	SGX	6 hr
Nov 20, 3:00 AM PST	Wind Advisory	SGX	47 hr
Nov 22, 1:12 PM PST	Fire Weather Watch	SGX	20 hr
Nov 23, 1:29 AM PST	Wind Advisory	VEF	42 hr
Nov 23, 9:29 AM PST	Red Flag Warning	SGX	3 days
Nov 24, 3:29 AM PST	High Wind Warning	SGX	36 hr
Nov 24, 2:18 PM PST	Lake Wind Advisory	VEF	28 hr
Dec 3, 5:34 PM PST	Dense Fog Advisory	SGX	15 hr
Dec 4, 6:31 PM PST	Dense Fog Advisory	SGX	14 hr
Dec 8, 2:45 AM PST	Wind Advisory	VEF	37 hr
Dec 9, 12:06 AM PST	Freeze Watch	VEF	25 hr
Dec 9, 1:54 AM PST	Wind Advisory	SGX	14 hr
Dec 9, 12:54 PM PST	Freeze Watch	PSR	12 hr
Dec 10, 1:05 AM PST	Freeze Warning	VEF	31 hr
Dec 10, 1:13 AM PST	Freeze Warning	PSR	31 hr
Dec 12, 3:00 AM PST	High Wind Watch	SGX	25 hr
Dec 12, 3:13 AM PST	Winter Storm Watch	SGX	25 hr
Dec 12, 1:15 PM PST	Wind Advisory	PSR	64 hr
Dec 12, 2:02 PM PST	Wind Advisory	VEF	62 hr
Dec 13, 3:50 AM PST	High Wind Warning	SGX	44 hr
Dec 13, 3:50 AM PST	Wind Advisory	SGX	44 hr
Dec 13, 3:53 AM PST	Winter Storm Warning	SGX	44 hr
Dec 13, 10:42 AM PST	Flood Watch	SGX	34 hr
Dec 13, 1:15 PM PST	High Wind Warning	PSR	40 hr
Dec 14, 9:23 AM PST	Areal Flood Advisory	SGX	4 hr
Dec 14, 1:00 PM PST	Areal Flood Advisory	SGX	3 hr
Dec 14, 1:27 PM PST	Flash Flood Warning Considerable damage threat	SGX	108 min
Dec 14, 2:15 PM PST	Areal Flood Advisory	VEF	3 hr
Dec 14, 2:25 PM PST	Areal Flood Advisory	VEF	3 hr
Dec 14, 8:24 PM PST	Frost Advisory	SGX	13 hr
Dec 16, 11:37 AM PST	Wind Advisory	SGX	48 hr
Dec 16, 12:14 PM PST	Lake Wind Advisory	VEF	31 hr
Dec 17, 11:36 AM PST	Frost Advisory	SGX	20 hr
Dec 18, 1:47 AM PST	Frost Advisory	SGX	30 hr
Dec 19, 2:28 AM PST	Frost Advisory	SGX	30 hr
Dec 22, 10:15 AM PST	Flood Watch	SGX	50 hr
Dec 23, 2:57 AM PST	Wind Advisory	SGX	39 hr
Dec 23, 3:01 AM PST	Winter Weather Advisory	SGX	19 hr
Dec 23, 3:33 PM PST	Areal Flood Advisory	SGX	3 hr
Dec 23, 5:29 PM PST	Areal Flood Advisory	SGX	3 hr
Dec 23, 8:20 PM PST	Areal Flood Advisory	SGX	7 hr
Dec 23, 10:03 PM PST	Winter Storm Warning	SGX	14 hr
Dec 24, 1:17 AM PST	Flash Flood Warning Considerable damage threat	SGX	3 hr
Dec 24, 7:07 AM PST	Areal Flood Advisory	SGX	2 hr
Dec 24, 12:00 PM PST	Winter Storm Watch	SGX	9 hr
Dec 24, 9:00 PM PST	Winter Storm Warning	SGX	32 hr
Dec 25, 1:11 PM PST	Wind Advisory	VEF	23 hr
Dec 25, 1:40 PM PST	Winter Storm Watch	SGX	24 hr
Dec 26, 12:58 AM PST	Areal Flood Advisory	SGX	3 hr
Dec 26, 3:25 AM PST	Wind Advisory	SGX	9 hr
Dec 26, 12:03 PM PST	High Wind Warning	SGX	32 hr
Dec 26, 1:01 PM PST	Wind Advisory	VEF	37 hr
Dec 26, 1:40 PM PST	Winter Storm Warning	SGX	37 hr
Dec 26, 2:02 PM PST	Wind Advisory	PSR	37 hr
Dec 27, 7:39 PM PST	Wind Advisory	SGX	7 hr
Dec 28, 3:00 AM PST	Winter Storm Watch	SGX	10 hr
Dec 28, 11:07 AM PST	Flood Watch	SGX	48 hr
Dec 28, 1:26 PM PST	Winter Storm Warning	SGX	55 hr
Dec 28, 1:49 PM PST	Winter Weather Advisory	VEF	45 hr
Dec 31, 3:29 AM PST	Wind Advisory	SGX	24 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
Severe Thunderstorm Warning	18
Mesoscale Discussion	1
Flooding
Flash Flood Warning	40
Flash Flood Watch	11
Flood Watch	3
Areal Flood Advisory	43
Winter
Winter Storm Warning	9
Winter Storm Watch	8
Winter Weather Advisory	9
Heat
Excessive Heat Warning	26
Excessive Heat Watch	19
Heat Advisory	6
Cold
Freeze Warning	2
Freeze Watch	2
Frost Advisory	8
Wind and dust
Dust Storm Warning	2
High Wind Warning	17
High Wind Watch	12
Blowing Dust Advisory	3
Dust Storm Advisory	1
Lake Wind Advisory	6
Wind Advisory	79
Fire
Red Flag Warning	10
Fire Weather Watch	7
Fog and smoke
Dense Fog Advisory	6

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.