Alert archive / Minnesota / Saint Louis County

Weather alerts in Saint Louis County, Minnesota, 2012

241 weather alerts in 2012, 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 2012. Tap one for its archive.

Alerts: 241
Warnings: 85
Watches: 23
Advisories: 55
Busiest month: July74 alerts
Busiest day: June 20, 201210 alerts

Over time

By month

Warning verification

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

0 of 2 tornado warnings covering Saint Louis County in 2012 had a tornado report inside them; 0 of 1 tornado reports fell inside a warning.

Saint Louis County, 2012

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	2	0	100%	1	0%
Severe thunderstorm warnings	60	16	73%	24	71%	26 min
Flash flood warnings	4	0	100%	0

Each office's whole area, 2012

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Duluth, MN: tornado warnings	7	0	100%	2	0%
NWS Duluth, MN: severe thunderstorm warnings	168	38	77%	93	80%	24 min
NWS Duluth, MN: flash flood warnings	11	0	100%	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, Central Time. Each opens its own page with the text, the map, the radar and the sounding.

Issued	Product	Office	Lasted
Jan 1, 4:08 AM CST	Wind Advisory	DLH	20 hr
Jan 18, 3:38 PM CST	Extreme Cold Warning	DLH	20 hr
Jan 21, 3:25 PM CST	Winter Weather Advisory	DLH	21 hr
Jan 22, 3:13 PM CST	Winter Weather Advisory	DLH	33 hr
Jan 30, 3:42 PM CST	Winter Weather Advisory	DLH	18 hr
Feb 3, 8:52 PM CST	Dense Fog Advisory	DLH	13 hr
Feb 19, 3:22 PM CST	Winter Weather Advisory	DLH	45 hr
Feb 21, 6:39 AM CST	Winter Storm Warning	DLH	9 hr
Feb 24, 4:00 PM CST	Winter Storm Watch	DLH	12 hr
Feb 25, 3:48 AM CST	Winter Storm Warning	DLH	47 hr
Feb 25, 3:48 AM CST	Winter Weather Advisory	DLH	47 hr
Feb 26, 4:14 PM CST	Winter Storm Watch	DLH	23 hr
Feb 27, 3:15 PM CST	Winter Storm Watch	DLH	12 hr
Feb 27, 3:15 PM CST	Winter Storm Warning	DLH	52 hr
Feb 28, 3:35 AM CST	Winter Weather Advisory	DLH	25 hr
Feb 29, 4:28 AM CST	Winter Weather Advisory	DLH	15 hr
Feb 29, 9:34 AM CST	Blizzard Warning	DLH	10 hr
Mar 2, 10:34 PM CST	Winter Weather Advisory	DLH	16 hr
Mar 3, 9:41 AM CST	Winter Storm Warning	DLH	2 hr
Mar 4, 3:07 AM CST	Lake Effect Snow Advisory	DLH	9 hr
Mar 4, 4:32 AM CST	Lake Effect Snow Warning	DLH	11 hr
Mar 22, 2:48 AM CDT	Dense Fog Advisory	DLH	4 hr
Mar 23, 8:45 AM CDT	Dense Fog Advisory	DLH	4 hr
Mar 23, 3:52 PM CDT	Dense Fog Advisory	DLH	20 hr
Mar 26, 4:03 AM CDT	Freezing Rain Advisory	DLH	27 hr
Mar 26, 3:04 PM CDT	Wind Advisory	DLH	28 hr
Mar 29, 9:54 PM CDT	Winter Weather Advisory	DLH	12 hr
Mar 30, 11:26 PM CDT	Dense Fog Advisory	DLH	15 hr
Apr 1, 3:52 AM CDT	Dense Fog Advisory	DLH	6 hr
Apr 2, 9:06 AM CDT	Special Weather Statement	DLH	54 min
Apr 2, 4:14 PM CDT	Special Weather Statement	DLH	46 min
Apr 15, 3:26 AM CDT	Winter Weather Advisory	DLH	33 hr
Apr 15, 4:09 PM CDT	Special Weather Statement	DLH	21 min
Apr 16, 4:39 AM CDT	Winter Storm Warning	DLH	7 hr
May 1, 12:20 PM CDT	Dense Fog Advisory	DLH	3 hr
May 1, 10:37 PM CDT	Special Weather Statement	DLH	23 min
May 1, 10:58 PM CDT	Special Weather Statement	DLH	32 min
May 1, 11:17 PM CDT	Special Weather Statement	DLH	28 min
May 3, 2:02 AM CDT	Special Weather Statement	DLH	13 min
May 3, 2:22 AM CDT	Special Weather Statement	DLH	38 min
May 3, 3:06 AM CDT	Special Weather Statement	DLH	39 min
May 4, 8:46 AM CDT	Dense Fog Advisory	DLH	7 hr
May 12, 3:11 PM CDT	Fire Weather Watch	DLH	14 hr
May 13, 5:02 AM CDT	Red Flag Warning	DLH	14 hr
May 15, 7:32 PM CDT	Frost Advisory	DLH	12 hr
May 15, 7:32 PM CDT	Freeze Warning	DLH	12 hr
May 18, 7:57 PM CDT	Special Weather Statement	DLH	48 min
May 19, 1:49 PM CDT	Mesoscale Discussion	SPC	86 min
May 19, 7:19 PM CDT	Special Weather Statement	DLH	41 min
May 19, 8:42 PM CDT	Special Weather Statement	DLH	33 min
May 19, 9:17 PM CDT	Special Weather Statement	DLH	43 min
May 23, 2:18 AM CDT	Special Weather Statement	DLH	42 min
May 23, 3:22 AM CDT	Special Weather Statement	DLH	38 min
May 23, 1:50 PM CDT	Special Weather Statement	DLH	55 min
May 23, 3:21 PM CDT	Flood Watch	DLH	27 hr
May 23, 7:16 PM CDT	Special Weather Statement	DLH	44 min
May 24, 3:09 PM CDT	Areal Flood Advisory	DLH	6 hr
May 27, 3:33 AM CDT	Flash Flood Watch	DLH	26 hr
May 28, 1:31 PM CDT	Severe Thunderstorm Warning	DLH	59 min
May 28, 2:28 PM CDT	Severe Thunderstorm Warning	DLH	47 min
May 28, 3:11 PM CDT	Severe Thunderstorm Warning	DLH	49 min
May 28, 6:02 PM CDT	Special Weather Statement	DLH	43 min
May 29, 3:13 PM CDT	Frost Advisory	DLH	16 hr
May 31, 1:07 AM CDT	Frost Advisory	DLH	7 hr
May 31, 3:02 PM CDT	Frost Advisory	DLH	16 hr
Jun 4, 1:45 PM CDT	Special Weather Statement	DLH	30 min
Jun 4, 2:22 PM CDT	Special Weather Statement	DLH	23 min
Jun 4, 3:07 PM CDT	Special Weather Statement	DLH	38 min
Jun 6, 11:14 AM CDT	Special Weather Statement	DLH	46 min
Jun 6, 11:52 AM CDT	Special Weather Statement	DLH	23 min
Jun 6, 12:22 PM CDT	Special Weather Statement	DLH	23 min
Jun 10, 3:03 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 10, 6:28 PM CDT	Severe Thunderstorm Warning	DLH	47 min
Jun 10, 6:31 PM CDT	Severe Thunderstorm Warning	DLH	44 min
Jun 10, 7:12 PM CDT	Special Weather Statement	DLH	48 min
Jun 10, 7:55 PM CDT	Special Weather Statement	DLH	50 min
Jun 10, 8:11 PM CDT	Severe Thunderstorm Warning	DLH	34 min
Jun 10, 9:45 PM CDT	Special Weather Statement	DLH	45 min
Jun 10, 9:49 PM CDT	Severe Thunderstorm Warning	DLH	34 min
Jun 14, 6:38 AM CDT	Special Weather Statement	DLH	67 min
Jun 14, 2:04 PM CDT	Severe Thunderstorm Warning	DLH	56 min
Jun 16, 2:23 PM CDT	Special Weather Statement	DLH	37 min
Jun 16, 3:02 PM CDT	Special Weather Statement	DLH	43 min
Jun 16, 3:47 PM CDT	Special Weather Statement	DLH	43 min
Jun 18, 12:44 PM CDT	Severe Thunderstorm Warning	DLH	31 min
Jun 18, 1:16 PM CDT	Severe Thunderstorm Warning	DLH	29 min
Jun 18, 1:50 PM CDT	Severe Thunderstorm Warning	DLH	25 min
Jun 18, 1:52 PM CDT	Severe Thunderstorm Warning	DLH	23 min
Jun 18, 1:59 PM CDT	Tornado Warning	DLH	13 min
Jun 18, 3:33 PM CDT	Flash Flood Watch	DLH	45 hr
Jun 19, 2:23 PM CDT	Severe Thunderstorm Warning	DLH	37 min
Jun 19, 2:59 PM CDT	Severe Thunderstorm Warning	DLH	36 min
Jun 19, 4:11 PM CDT	Special Weather Statement	DLH	19 min
Jun 19, 4:49 PM CDT	Severe Thunderstorm Warning	DLH	41 min
Jun 19, 5:22 PM CDT	Areal Flood Advisory	DLH	6 hr
Jun 19, 5:26 PM CDT	Severe Thunderstorm Warning	DLH	41 min
Jun 19, 5:35 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 19, 6:01 PM CDT	Flash Flood Warning	DLH	6 hr
Jun 19, 6:28 PM CDT	Flash Flood Warning	DLH	6 hr
Jun 19, 8:04 PM CDT	Areal Flood Advisory	DLH	4 hr
Jun 19, 9:17 PM CDT	Mesoscale Discussion	SPC	88 min
Jun 19, 11:34 PM CDT	Flash Flood Warning Emergency	DLH	17 hr
Jun 19, 11:37 PM CDT	Mesoscale Discussion	SPC	83 min
Jun 20, 12:07 AM CDT	Areal Flood Warning	DLH	12 hr
Jun 20, 10:26 AM CDT	Flash Flood Warning	DLH	12 hr
Jun 20, 10:36 AM CDT	Severe Thunderstorm Warning	DLH	39 min
Jun 20, 10:39 AM CDT	Severe Thunderstorm Warning	DLH	36 min
Jun 20, 12:08 PM CDT	Areal Flood Warning	DLH	48 hr
Jun 20, 4:24 PM CDT	Areal Flood Warning	DLH	48 hr
Jun 20, 10:39 PM CDT	Areal Flood Warning	DLH	36 hr
Jun 22, 10:21 AM CDT	Areal Flood Warning	DLH	48 hr
Jun 22, 12:04 PM CDT	Areal Flood Warning	DLH	10 days
Jun 23, 8:36 PM CDT	Severe Thunderstorm Warning	DLH	39 min
Jun 24, 10:39 AM CDT	Areal Flood Warning	DLH	4 days
Jul 2, 1:59 PM CDT	Heat Advisory	DLH	7 hr
Jul 2, 3:33 PM CDT	Mesoscale Discussion	SPC	87 min
Jul 2, 6:19 PM CDT	Special Weather Statement	DLH	26 min
Jul 2, 6:40 PM CDT	Mesoscale Discussion	SPC	65 min
Jul 2, 6:44 PM CDT	Severe Thunderstorm Warning	DLH	32 min
Jul 2, 6:51 PM CDT	Severe Thunderstorm Warning	DLH	39 min
Jul 2, 6:54 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 2, 7:28 PM CDT	Severe Thunderstorm Warning	DLH	47 min
Jul 2, 7:44 PM CDT	Severe Thunderstorm Warning	DLH	46 min
Jul 2, 8:05 PM CDT	Severe Thunderstorm Warning	DLH	40 min
Jul 2, 8:12 PM CDT	Severe Thunderstorm Warning	DLH	18 min
Jul 2, 8:28 PM CDT	Severe Thunderstorm Warning	DLH	47 min
Jul 2, 9:12 PM CDT	Severe Thunderstorm Warning	DLH	48 min
Jul 2, 9:17 PM CDT	Mesoscale Discussion	SPC	118 min
Jul 2, 9:54 PM CDT	Severe Thunderstorm Warning	DLH	36 min
Jul 2, 9:57 PM CDT	Severe Thunderstorm Warning	DLH	48 min
Jul 2, 11:24 PM CDT	Areal Flood Advisory	DLH	6 hr
Jul 4, 12:25 PM CDT	Mesoscale Discussion	SPC	95 min
Jul 4, 12:34 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 4, 1:44 PM CDT	Severe Thunderstorm Warning	DLH	46 min
Jul 4, 1:55 PM CDT	Special Weather Statement	DLH	20 min
Jul 4, 2:32 PM CDT	Severe Thunderstorm Warning	DLH	43 min
Jul 4, 2:48 PM CDT	Severe Thunderstorm Warning	DLH	27 min
Jul 4, 3:14 PM CDT	Severe Thunderstorm Warning	DLH	46 min
Jul 4, 6:07 PM CDT	Special Weather Statement	DLH	53 min
Jul 4, 7:15 PM CDT	Severe Thunderstorm Warning	DLH	45 min
Jul 4, 7:31 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 6, 10:21 AM CDT	Special Weather Statement	DLH	54 min
Jul 13, 1:07 PM CDT	Special Weather Statement	DLH	23 min
Jul 13, 1:35 PM CDT	Mesoscale Discussion	SPC	55 min
Jul 13, 1:49 PM CDT	Special Weather Statement	DLH	41 min
Jul 13, 2:32 PM CDT	Special Weather Statement	DLH	43 min
Jul 15, 3:57 PM CDT	Heat Advisory	DLH	29 hr
Jul 20, 9:07 AM CDT	Special Weather Statement	DLH	53 min
Jul 20, 9:13 AM CDT	Severe Thunderstorm Warning	DLH	47 min
Jul 20, 9:56 AM CDT	Severe Thunderstorm Warning	DLH	34 min
Jul 20, 10:25 AM CDT	Special Weather Statement	DLH	20 min
Jul 20, 2:51 PM CDT	Mesoscale Discussion	SPC	84 min
Jul 20, 4:56 PM CDT	Special Weather Statement	DLH	19 min
Jul 20, 5:13 PM CDT	Special Weather Statement	DLH	17 min
Jul 20, 5:28 PM CDT	Special Weather Statement	DLH	17 min
Jul 20, 8:44 PM CDT	Special Weather Statement	DLH	16 min
Jul 20, 9:15 PM CDT	Special Weather Statement	DLH	15 min
Jul 20, 9:30 PM CDT	Special Weather Statement	DLH	15 min
Jul 20, 9:44 PM CDT	Special Weather Statement	DLH	16 min
Jul 22, 3:25 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 22, 4:46 PM CDT	Severe Thunderstorm Warning	DLH	44 min
Jul 22, 5:23 PM CDT	Severe Thunderstorm Warning	DLH	37 min
Jul 22, 5:54 PM CDT	Severe Thunderstorm Warning	DLH	66 min
Jul 22, 6:06 PM CDT	Tornado Warning	DLH	39 min
Jul 22, 6:44 PM CDT	Special Weather Statement	DLH	31 min
Jul 22, 6:49 PM CDT	Severe Thunderstorm Warning	DLH	41 min
Jul 22, 6:55 PM CDT	Mesoscale Discussion	SPC	95 min
Jul 22, 7:14 PM CDT	Severe Thunderstorm Warning	DLH	31 min
Jul 22, 7:22 PM CDT	Special Weather Statement	DLH	23 min
Jul 22, 7:28 PM CDT	Severe Thunderstorm Warning	DLH	35 min
Jul 22, 7:40 PM CDT	Severe Thunderstorm Warning	DLH	50 min
Jul 22, 7:58 PM CDT	Special Weather Statement	DLH	47 min
Jul 22, 8:44 PM CDT	Severe Thunderstorm Warning	DLH	24 min
Jul 24, 3:41 PM CDT	Flash Flood Watch	DLH	17 hr
Jul 25, 2:24 AM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 25, 3:15 AM CDT	Severe Thunderstorm Warning	DLH	30 min
Jul 25, 3:30 AM CDT	Special Weather Statement	DLH	15 min
Jul 25, 5:24 AM CDT	Mesoscale Discussion	SPC	66 min
Jul 29, 2:22 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 29, 6:00 PM CDT	Severe Thunderstorm Warning	DLH	30 min
Jul 29, 6:28 PM CDT	Severe Thunderstorm Warning	DLH	47 min
Jul 29, 7:21 PM CDT	Special Weather Statement	DLH	24 min
Jul 29, 7:40 PM CDT	Severe Thunderstorm Warning	DLH	39 min
Jul 29, 7:51 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 29, 11:03 PM CDT	Mesoscale Discussion	SPC	117 min
Jul 29, 11:48 PM CDT	Severe Thunderstorm Warning	DLH	42 min
Jul 30, 1:17 AM CDT	Special Weather Statement	DLH	43 min
Jul 30, 2:25 AM CDT	Special Weather Statement	DLH	20 min
Aug 3, 11:07 PM CDT	Severe Thunderstorm Warning	DLH	53 min
Aug 3, 11:23 PM CDT	Special Weather Statement	DLH	37 min
Aug 3, 11:57 PM CDT	Special Weather Statement	DLH	48 min
Aug 6, 7:39 PM CDT	Special Weather Statement	DLH	36 min
Aug 6, 8:18 PM CDT	Special Weather Statement	DLH	27 min
Aug 15, 3:25 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Aug 15, 5:19 PM CDT	Severe Thunderstorm Warning	DLH	41 min
Aug 15, 5:49 PM CDT	Mesoscale Discussion	SPC	86 min
Aug 15, 5:57 PM CDT	Severe Thunderstorm Warning	DLH	29 min
Aug 15, 8:20 PM CDT	Mesoscale Discussion	SPC	85 min
Aug 23, 2:10 PM CDT	Severe Thunderstorm Warning	DLH	41 min
Aug 26, 4:42 AM CDT	Dense Fog Advisory	DLH	3 hr
Aug 29, 3:00 PM CDT	Fire Weather Watch	DLH	14 hr
Sep 3, 5:55 AM CDT	Dense Fog Advisory	DLH	3 hr
Sep 4, 2:39 PM CDT	Special Weather Statement	DLH	36 min
Sep 4, 2:50 PM CDT	Severe Thunderstorm Warning	DLH	40 min
Sep 4, 3:15 PM CDT	Severe Thunderstorm Warning	DLH	45 min
Sep 4, 3:27 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Sep 4, 3:48 PM CDT	Severe Thunderstorm Warning	DLH	42 min
Sep 4, 4:29 PM CDT	Severe Thunderstorm Warning	DLH	46 min
Sep 4, 5:14 PM CDT	Severe Thunderstorm Warning	DLH	31 min
Sep 4, 6:39 PM CDT	Mesoscale Discussion	SPC	66 min
Sep 12, 4:18 AM CDT	Red Flag Warning	DLH	15 hr
Sep 13, 4:16 AM CDT	Frost Advisory	DLH	28 hr
Sep 14, 3:19 PM CDT	Frost Advisory	DLH	17 hr
Sep 17, 3:53 AM CDT	Freeze Watch	DLH	11 hr
Sep 17, 3:08 PM CDT	Freeze Warning	DLH	18 hr
Sep 21, 3:20 PM CDT	Freeze Watch	DLH	12 hr
Sep 21, 5:43 PM CDT	Special Weather Statement	DLH	62 min
Sep 21, 5:46 PM CDT	Special Weather Statement	DLH	59 min
Sep 22, 3:15 AM CDT	Freeze Warning	DLH	28 hr
Sep 30, 12:23 AM CDT	Dense Fog Advisory	DLH	9 hr
Oct 3, 3:42 AM CDT	Winter Storm Watch	DLH	12 hr
Oct 3, 3:46 PM CDT	Winter Weather Advisory	DLH	29 hr
Oct 4, 3:57 AM CDT	Wind Advisory	DLH	17 hr
Oct 13, 6:41 PM CDT	Dense Fog Advisory	DLH	15 hr
Oct 17, 5:47 AM CDT	Dense Fog Advisory	DLH	2 hr
Oct 20, 6:55 AM CDT	Dense Fog Advisory	DLH	3 hr
Oct 23, 3:50 PM CDT	Dense Fog Advisory	DLH	18 hr
Nov 9, 11:27 AM CST	Winter Weather Advisory	DLH	28 hr
Nov 20, 8:02 PM CST	Dense Fog Advisory	DLH	12 hr
Nov 21, 3:38 PM CST	Winter Weather Advisory	DLH	24 hr
Nov 22, 3:38 PM CST	Winter Weather Advisory	DLH	24 hr
Dec 1, 3:38 PM CST	Freezing Fog Advisory	DLH	16 hr
Dec 1, 8:16 PM CST	Dense Fog Advisory	DLH	3 hr
Dec 2, 9:34 PM CST	Dense Fog Advisory	DLH	5 hr
Dec 7, 4:12 AM CST	Winter Storm Watch	DLH	12 hr
Dec 7, 3:45 PM CST	Winter Storm Warning	DLH	68 hr
Dec 7, 3:45 PM CST	Winter Weather Advisory	DLH	48 hr
Dec 14, 3:03 PM CST	Winter Weather Advisory	DLH	36 hr
Dec 24, 3:59 AM CST	Wind Chill Advisory	DLH	32 hr
Dec 27, 10:41 AM CST	Winter Weather Advisory	DLH	47 hr
Dec 30, 3:39 PM CST	Wind Chill Advisory	DLH	18 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	58
Tornado Warning	2
Severe Thunderstorm Watch	10
Mesoscale Discussion	16
Special Weather Statement	62
Flooding
Areal Flood Warning	7
Flash Flood Warning	4
Flash Flood Watch	3
Flood Watch	1
Areal Flood Advisory	4
Winter
Blizzard Warning	1
Lake Effect Snow Warning	1
Winter Storm Warning	6
Winter Storm Watch	5
Freezing Rain Advisory	1
Lake Effect Snow Advisory	1
Winter Weather Advisory	17
Heat
Heat Advisory	2
Cold
Extreme Cold Warning	1
Freeze Warning	3
Freeze Watch	2
Frost Advisory	6
Wind Chill Advisory	2
Wind and dust
Wind Advisory	3
Fire
Red Flag Warning	2
Fire Weather Watch	2
Fog and smoke
Dense Fog Advisory	18
Freezing Fog Advisory	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 2011 2013

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.