Alert archive / Minnesota / Saint Louis County

Weather alerts in Saint Louis County, Minnesota, 2020

219 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Saint Louis County and its neighbors

Each county as a circle sized by its count in 2020. Tap one for its archive.

Alerts: 219
Warnings: 56
Watches: 17
Advisories: 60
Busiest month: July66 alerts
Busiest day: July 4, 202013 alerts

Over time

By month

Warning verification

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

Saint Louis County, 2020

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	34	17	50%	55	71%	19 min
Flash flood warnings	3	2	33%	1	100%	27 min

Each office's whole area, 2020

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Duluth, MN: tornado warnings	18	4	78%	11	55%	10 min
NWS Duluth, MN: severe thunderstorm warnings	126	64	49%	232	64%	19 min
NWS Duluth, MN: flash flood warnings	9	5	44%	15	60%	69 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, Central Time. Each opens its own page with the text, the map, the radar and the sounding.

Issued	Product	Office	Lasted
Jan 4, 2:41 PM CST	Wind Advisory	DLH	31 hr
Jan 7, 3:04 PM CST	Wind Chill Advisory	DLH	19 hr
Jan 7, 3:04 PM CST	Winter Storm Watch	DLH	24 hr
Jan 8, 3:18 PM CST	Winter Weather Advisory	DLH	27 hr
Jan 10, 2:21 PM CST	Wind Chill Advisory	DLH	19 hr
Jan 11, 9:03 AM CST	Wind Chill Advisory	DLH	3 hr
Jan 11, 7:15 PM CST	Winter Storm Warning	DLH	18 hr
Jan 13, 3:17 AM CST	Winter Weather Advisory	DLH	30 hr
Jan 14, 10:05 AM CST	Winter Weather Advisory	DLH	32 hr
Jan 15, 2:56 PM CST	Wind Chill Advisory	DLH	19 hr
Jan 15, 2:56 PM CST	Winter Storm Watch	DLH	24 hr
Jan 16, 2:44 PM CST	Winter Storm Warning	DLH	66 hr
Jan 16, 8:32 PM CST	Wind Chill Advisory	DLH	9 hr
Jan 22, 9:14 PM CST	Dense Fog Advisory	DLH	10 hr
Jan 23, 2:28 AM CST	Winter Weather Advisory	DLH	28 hr
Feb 1, 7:41 PM CST	Wind Advisory	DLH	19 hr
Feb 12, 4:27 AM CST	Wind Chill Advisory	DLH	32 hr
Feb 12, 3:35 PM CST	Wind Chill Warning	DLH	20 hr
Feb 13, 2:39 PM CST	Wind Chill Advisory	DLH	19 hr
Feb 18, 2:47 PM CST	Wind Chill Advisory	DLH	19 hr
Feb 19, 2:32 PM CST	Wind Chill Advisory	DLH	18 hr
Mar 18, 3:33 PM CDT	Winter Weather Advisory	DLH	24 hr
Mar 27, 3:48 AM CDT	Winter Storm Watch	DLH	24 hr
Mar 27, 3:44 PM CDT	Lakeshore Flood Watch	DLH	12 hr
Mar 28, 4:02 AM CDT	Winter Weather Advisory	DLH	31 hr
Mar 28, 4:11 AM CDT	Lakeshore Flood Warning	DLH	27 hr
Mar 28, 4:11 AM CDT	Lakeshore Flood Advisory	DLH	32 hr
Mar 28, 3:10 PM CDT	Winter Storm Warning	DLH	23 hr
Apr 2, 3:46 AM CDT	Winter Weather Advisory	DLH	44 hr
Apr 7, 7:32 AM CDT	Special Weather Statement	DLH	28 min
Apr 9, 6:06 AM CDT	Special Weather Statement	DLH	54 min
Apr 9, 7:30 AM CDT	Snow Squall Warning	DLH	60 min
Apr 19, 2:54 PM CDT	Fire Weather Watch	DLH	13 hr
Apr 20, 6:01 PM CDT	Special Weather Statement	DLH	44 min
Apr 28, 3:29 AM CDT	Dense Fog Advisory	DLH	7 hr
Apr 28, 10:01 AM CDT	Dense Fog Advisory	DLH	119 min
May 1, 2:52 PM CDT	Fire Weather Watch	DLH	14 hr
May 2, 5:06 AM CDT	Red Flag Warning	DLH	14 hr
May 17, 5:31 PM CDT	Fire Weather Watch	DLH	10 hr
May 18, 3:42 AM CDT	Red Flag Warning	DLH	15 hr
May 25, 5:06 PM CDT	Special Weather Statement	DLH	39 min
May 25, 6:08 PM CDT	Special Weather Statement	DLH	37 min
May 26, 3:09 AM CDT	Dense Fog Advisory	DLH	9 hr
May 26, 3:49 PM CDT	Flash Flood Watch	DLH	10 hr
May 27, 1:16 AM CDT	Dense Fog Advisory	DLH	7 hr
May 29, 3:18 PM CDT	Frost Advisory	DLH	16 hr
May 30, 4:34 PM CDT	Frost Advisory	DLH	15 hr
Jun 1, 10:41 AM CDT	Special Weather Statement	DLH	34 min
Jun 7, 2:18 AM CDT	Mesoscale Discussion	SPC	117 min
Jun 7, 5:20 AM CDT	Special Weather Statement	DLH	25 min
Jun 7, 6:06 AM CDT	Beach Hazards Statement	DLH	15 hr
Jun 7, 6:56 AM CDT	Special Weather Statement	DLH	34 min
Jun 7, 7:49 AM CDT	Areal Flood Advisory	DLH	92 min
Jun 7, 8:58 AM CDT	Special Weather Statement	DLH	32 min
Jun 9, 6:55 PM CDT	Special Weather Statement	DLH	35 min
Jun 10, 1:35 AM CDT	Areal Flood Advisory	DLH	4 hr
Jun 11, 7:32 PM CDT	Frost Advisory	DLH	11 hr
Jun 12, 7:22 AM CDT	Frost Advisory	DLH	23 hr
Jun 13, 3:18 AM CDT	Beach Hazards Statement	DLH	18 hr
Jun 14, 3:30 AM CDT	Beach Hazards Statement	DLH	18 hr
Jun 21, 11:34 AM CDT	Special Weather Statement	DLH	26 min
Jun 21, 12:00 PM CDT	Severe Thunderstorm Warning	DLH	45 min
Jun 21, 1:15 PM CDT	Severe Thunderstorm Warning	DLH	15 min
Jun 21, 4:33 PM CDT	Special Weather Statement	DLH	27 min
Jun 21, 4:51 PM CDT	Special Weather Statement	DLH	24 min
Jun 28, 2:04 PM CDT	Beach Hazards Statement	DLH	7 hr
Jul 4, 2:35 PM CDT	Special Weather Statement	DLH	10 min
Jul 4, 2:36 PM CDT	Special Weather Statement	DLH	9 min
Jul 4, 4:49 PM CDT	Special Weather Statement	DLH	11 min
Jul 4, 5:00 PM CDT	Special Weather Statement	DLH	30 min
Jul 4, 5:11 PM CDT	Special Weather Statement	DLH	19 min
Jul 4, 5:25 PM CDT	Special Weather Statement	DLH	20 min
Jul 4, 5:55 PM CDT	Special Weather Statement	DLH	20 min
Jul 4, 5:57 PM CDT	Special Weather Statement	DLH	18 min
Jul 4, 6:15 PM CDT	Severe Thunderstorm Warning	DLH	30 min
Jul 4, 6:22 PM CDT	Special Weather Statement	DLH	8 min
Jul 4, 6:30 PM CDT	Special Weather Statement	DLH	15 min
Jul 4, 6:46 PM CDT	Special Weather Statement	DLH	14 min
Jul 4, 6:55 PM CDT	Special Weather Statement	DLH	20 min
Jul 4, 7:05 PM CDT	Special Weather Statement	DLH	10 min
Jul 5, 12:38 PM CDT	Severe Thunderstorm Warning	DLH	37 min
Jul 5, 3:59 PM CDT	Areal Flood Advisory	DLH	3 hr
Jul 5, 4:03 PM CDT	Severe Thunderstorm Warning	DLH	27 min
Jul 5, 4:31 PM CDT	Severe Thunderstorm Warning	DLH	23 min
Jul 5, 5:08 PM CDT	Severe Thunderstorm Warning	DLH	52 min
Jul 5, 5:27 PM CDT	Severe Thunderstorm Warning	DLH	26 min
Jul 5, 6:14 PM CDT	Severe Thunderstorm Warning	DLH	46 min
Jul 5, 6:31 PM CDT	Severe Thunderstorm Warning	DLH	29 min
Jul 5, 7:00 PM CDT	Severe Thunderstorm Warning	DLH	11 min
Jul 5, 7:54 PM CDT	Special Weather Statement	DLH	21 min
Jul 5, 8:16 PM CDT	Areal Flood Advisory	DLH	3 hr
Jul 6, 1:59 PM CDT	Severe Thunderstorm Warning	DLH	31 min
Jul 6, 3:20 PM CDT	Special Weather Statement	DLH	25 min
Jul 6, 3:51 PM CDT	Special Weather Statement	DLH	24 min
Jul 6, 5:10 PM CDT	Areal Flood Warning	DLH	3 hr
Jul 8, 3:03 PM CDT	Mesoscale Discussion	SPC	117 min
Jul 8, 4:15 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 8, 5:46 PM CDT	Special Weather Statement	DLH	14 min
Jul 8, 6:17 PM CDT	Mesoscale Discussion	SPC	118 min
Jul 8, 7:12 PM CDT	Severe Thunderstorm Warning	DLH	25 min
Jul 8, 7:12 PM CDT	Severe Thunderstorm Warning	DLH	49 min
Jul 8, 7:58 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 9, 12:15 AM CDT	Special Weather Statement	DLH	15 min
Jul 9, 12:24 AM CDT	Severe Thunderstorm Warning	DLH	37 min
Jul 9, 12:53 AM CDT	Mesoscale Discussion	SPC	3 hr
Jul 9, 1:14 AM CDT	Special Weather Statement	DLH	16 min
Jul 9, 2:42 AM CDT	Severe Thunderstorm Warning	DLH	33 min
Jul 9, 3:16 AM CDT	Severe Thunderstorm Warning	DLH	29 min
Jul 13, 5:26 PM CDT	Beach Hazards Statement	DLH	5 hr
Jul 13, 6:18 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 13, 10:21 PM CDT	Special Weather Statement	DLH	24 min
Jul 13, 10:35 PM CDT	Severe Thunderstorm Warning	DLH	40 min
Jul 13, 10:49 PM CDT	Severe Thunderstorm Warning	DLH	41 min
Jul 13, 11:10 PM CDT	Severe Thunderstorm Warning	DLH	50 min
Jul 13, 11:23 PM CDT	Severe Thunderstorm Warning	DLH	52 min
Jul 13, 11:57 PM CDT	Severe Thunderstorm Warning	DLH	33 min
Jul 16, 2:09 PM CDT	Special Weather Statement	DLH	21 min
Jul 16, 3:49 PM CDT	Mesoscale Discussion	SPC	86 min
Jul 16, 5:36 PM CDT	Special Weather Statement	DLH	24 min
Jul 16, 5:53 PM CDT	Severe Thunderstorm Warning	DLH	52 min
Jul 16, 6:04 PM CDT	Special Weather Statement	DLH	26 min
Jul 16, 6:16 PM CDT	Special Weather Statement	DLH	29 min
Jul 17, 5:39 PM CDT	Severe Thunderstorm Watch PDS	SPC	8 hr
Jul 17, 10:25 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 18, 3:53 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 18, 6:15 PM CDT	Mesoscale Discussion	SPC	60 min
Jul 18, 6:33 PM CDT	Severe Thunderstorm Warning	DLH	42 min
Jul 18, 7:09 PM CDT	Severe Thunderstorm Warning	DLH	51 min
Jul 18, 7:49 PM CDT	Severe Thunderstorm Warning	DLH	11 min
Jul 18, 7:55 PM CDT	Severe Thunderstorm Warning	DLH	50 min
Jul 21, 3:50 AM CDT	Beach Hazards Statement	DLH	17 hr
Jul 22, 11:38 AM CDT	Beach Hazards Statement	DLH	5 hr
Aug 7, 9:29 PM CDT	Severe Thunderstorm Warning	DLH	31 min
Aug 7, 10:00 PM CDT	Special Weather Statement	DLH	30 min
Aug 7, 10:37 PM CDT	Special Weather Statement	DLH	23 min
Aug 7, 11:03 PM CDT	Special Weather Statement	DLH	27 min
Aug 8, 1:21 AM CDT	Flash Flood Warning	DLH	3 hr
Aug 9, 9:22 AM CDT	Special Weather Statement	DLH	8 min
Aug 9, 2:46 PM CDT	Flash Flood Warning	DLH	3 hr
Aug 9, 6:28 PM CDT	Special Weather Statement	DLH	32 min
Aug 9, 6:56 PM CDT	Special Weather Statement	DLH	34 min
Aug 14, 12:33 AM CDT	Mesoscale Discussion	SPC	87 min
Aug 14, 1:32 AM CDT	Special Weather Statement	DLH	43 min
Aug 14, 1:55 AM CDT	Special Weather Statement	DLH	50 min
Aug 14, 2:09 AM CDT	Special Weather Statement	DLH	36 min
Aug 14, 2:42 AM CDT	Special Weather Statement	DLH	48 min
Aug 14, 5:38 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 14, 6:49 PM CDT	Severe Thunderstorm Warning	DLH	41 min
Aug 14, 7:23 PM CDT	Flash Flood Warning	DLH	90 min
Aug 14, 7:23 PM CDT	Severe Thunderstorm Warning	DLH	52 min
Aug 14, 7:41 PM CDT	Severe Thunderstorm Warning	DLH	34 min
Aug 14, 8:10 PM CDT	Severe Thunderstorm Warning	DLH	20 min
Aug 14, 8:14 PM CDT	Special Weather Statement	DLH	46 min
Aug 14, 8:18 PM CDT	Special Weather Statement	DLH	27 min
Aug 14, 8:48 PM CDT	Special Weather Statement	DLH	42 min
Aug 14, 8:51 PM CDT	Areal Flood Warning	DLH	5 hr
Aug 15, 3:14 PM CDT	Mesoscale Discussion	SPC	61 min
Aug 19, 7:14 PM CDT	Severe Thunderstorm Warning	DLH	16 min
Aug 20, 5:42 AM CDT	Special Weather Statement	DLH	33 min
Aug 20, 6:11 AM CDT	Special Weather Statement	DLH	49 min
Aug 21, 2:29 AM CDT	Dense Fog Advisory	DLH	7 hr
Aug 21, 11:35 AM CDT	Beach Hazards Statement	DLH	9 hr
Aug 22, 4:40 PM CDT	Special Weather Statement	DLH	35 min
Aug 22, 4:44 PM CDT	Severe Thunderstorm Warning	DLH	31 min
Aug 22, 4:54 PM CDT	Mesoscale Discussion	SPC	3 hr
Aug 23, 12:19 AM CDT	Dense Fog Advisory	DLH	9 hr
Aug 23, 10:22 PM CDT	Dense Fog Advisory	DLH	8 hr
Aug 25, 3:21 AM CDT	Beach Hazards Statement	DLH	18 hr
Aug 25, 11:40 PM CDT	Mesoscale Discussion	SPC	3 hr
Aug 26, 5:59 AM CDT	Special Weather Statement	DLH	16 min
Aug 26, 7:55 AM CDT	Special Weather Statement	DLH	20 min
Aug 26, 8:15 AM CDT	Special Weather Statement	DLH	15 min
Sep 2, 11:53 PM CDT	Special Weather Statement	DLH	37 min
Sep 3, 12:21 AM CDT	Special Weather Statement	DLH	24 min
Sep 3, 12:22 AM CDT	Special Weather Statement	DLH	23 min
Sep 3, 5:59 AM CDT	Wind Advisory	DLH	7 hr
Sep 7, 2:59 AM CDT	Frost Advisory	DLH	29 hr
Sep 7, 3:38 AM CDT	Freeze Watch	DLH	30 hr
Sep 8, 9:09 AM CDT	Frost Advisory	DLH	23 hr
Sep 8, 9:09 AM CDT	Freeze Warning	DLH	23 hr
Sep 9, 8:47 AM CDT	Frost Advisory	DLH	23 hr
Sep 9, 8:47 AM CDT	Freeze Warning	DLH	23 hr
Sep 10, 11:15 AM CDT	Frost Advisory	DLH	22 hr
Sep 10, 11:15 AM CDT	Freeze Warning	DLH	22 hr
Sep 13, 3:13 PM CDT	Frost Advisory	DLH	18 hr
Sep 16, 2:48 AM CDT	Frost Advisory	DLH	29 hr
Sep 16, 2:48 AM CDT	Freeze Warning	DLH	29 hr
Sep 17, 11:33 AM CDT	Frost Advisory	DLH	21 hr
Sep 17, 11:33 AM CDT	Freeze Warning	DLH	21 hr
Sep 24, 4:29 AM CDT	Beach Hazards Statement	DLH	15 hr
Sep 25, 12:58 AM CDT	Dense Fog Advisory	DLH	12 hr
Sep 25, 4:54 PM CDT	Special Weather Statement	DLH	36 min
Sep 25, 5:26 PM CDT	Special Weather Statement	DLH	34 min
Sep 26, 12:52 AM CDT	Dense Fog Advisory	DLH	11 hr
Sep 29, 6:48 PM CDT	Special Weather Statement	DLH	27 min
Oct 16, 10:57 AM CDT	Winter Weather Advisory	DLH	35 hr
Oct 19, 2:53 PM CDT	Winter Weather Advisory	DLH	38 hr
Oct 21, 4:29 AM CDT	Winter Storm Watch	DLH	11 hr
Oct 21, 3:37 PM CDT	Winter Storm Warning	DLH	30 hr
Oct 21, 3:37 PM CDT	Winter Weather Advisory	DLH	30 hr
Oct 22, 4:09 AM CDT	Winter Weather Advisory	DLH	23 hr
Oct 31, 3:04 PM CDT	Wind Advisory	DLH	22 hr
Nov 1, 6:02 AM CST	Wind Advisory	DLH	3 hr
Nov 9, 3:04 PM CST	Winter Storm Watch	DLH	13 hr
Nov 10, 4:07 AM CST	Winter Storm Warning	DLH	23 hr
Nov 10, 4:07 AM CST	Winter Weather Advisory	DLH	23 hr
Nov 10, 9:43 PM CST	Mesoscale Discussion	SPC	4 hr
Nov 14, 11:18 PM CST	Winter Weather Advisory	DLH	7 hr
Nov 24, 3:11 AM CST	Winter Weather Advisory	DLH	15 hr
Nov 24, 8:29 PM CST	Dense Fog Advisory	DLH	9 hr
Dec 22, 5:25 AM CST	Winter Storm Watch	DLH	22 hr
Dec 22, 5:25 AM CST	Winter Weather Advisory	DLH	10 hr
Dec 22, 3:22 PM CST	Winter Storm Warning	DLH	57 hr
Dec 23, 3:17 AM CST	Winter Weather Advisory	DLH	25 hr
Dec 23, 9:58 AM CST	Blizzard Warning	DLH	18 hr
Dec 23, 5:15 PM CST	Mesoscale Discussion	SPC	6 hr
Dec 23, 8:15 PM CST	Wind Chill Advisory	DLH	19 hr
Dec 24, 3:14 PM CST	Wind Chill Advisory	DLH	15 hr
Dec 28, 3:01 PM CST	Winter Weather Advisory	DLH	42 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	34
Severe Thunderstorm Watch	5
Mesoscale Discussion	14
Special Weather Statement	62
Flooding
Areal Flood Warning	2
Flash Flood Warning	3
Flash Flood Watch	1
Areal Flood Advisory	4
Winter
Blizzard Warning	1
Snow Squall Warning	1
Winter Storm Warning	6
Winter Storm Watch	6
Winter Weather Advisory	17
Cold
Freeze Warning	5
Wind Chill Warning	1
Freeze Watch	1
Frost Advisory	11
Wind Chill Advisory	11
Wind and dust
Wind Advisory	5
Fire
Red Flag Warning	2
Fire Weather Watch	3
Fog and smoke
Dense Fog Advisory	11
Coast and beach
Lakeshore Flood Warning	1
Lakeshore Flood Watch	1
Lakeshore Flood Advisory	1
Beach Hazards Statement	10

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2019 2021

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.