Alert archive / Minnesota / Saint Louis County

Weather alerts in Saint Louis County, Minnesota, 2011

240 weather alerts in 2011, 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 2011. Tap one for its archive.

Alerts: 240
Warnings: 71
Watches: 21
Advisories: 66
Busiest month: July41 alerts
Busiest day: July 5, 201113 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, 2011

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	49	16	67%	16	81%	21 min
Flash flood warnings	5	1	80%	1	100%	54 min

Each office's whole area, 2011

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Duluth, MN: tornado warnings	12	6	50%	9	89%	20 min
NWS Duluth, MN: severe thunderstorm warnings	218	70	68%	209	82%	25 min
NWS Duluth, MN: flash flood warnings	16	4	75%	6	100%	53 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
Dec 31, 6:39 PM CST	Special Weather Statement	DLH	51 min
Jan 1, 3:27 AM CST	Winter Weather Advisory	DLH	12 hr
Jan 3, 3:26 PM CST	Wind Chill Advisory	DLH	17 hr
Jan 6, 1:39 PM CST	Wind Chill Advisory	DLH	19 hr
Jan 11, 12:27 PM CST	Winter Weather Advisory	DLH	18 hr
Jan 14, 3:35 AM CST	Winter Weather Advisory	DLH	9 hr
Jan 14, 12:08 PM CST	Winter Weather Advisory	DLH	11 hr
Jan 16, 3:44 AM CST	Winter Weather Advisory	DLH	32 hr
Jan 16, 2:36 PM CST	Winter Storm Warning	DLH	23 hr
Jan 17, 2:15 PM CST	Wind Chill Advisory	DLH	7 hr
Jan 17, 9:25 PM CST	Wind Chill Advisory	DLH	11 hr
Jan 19, 3:27 PM CST	Wind Chill Advisory	DLH	21 hr
Jan 20, 3:12 AM CST	Wind Chill Advisory	DLH	29 hr
Jan 20, 3:24 PM CST	Extreme Cold Warning	DLH	17 hr
Jan 20, 3:26 PM CST	Wind Chill Warning	DLH	17 hr
Jan 21, 12:15 PM CST	Wind Chill Advisory	DLH	24 hr
Jan 27, 3:34 AM CST	Winter Storm Watch	DLH	12 hr
Jan 27, 3:09 PM CST	Winter Weather Advisory	DLH	36 hr
Jan 28, 3:53 AM CST	Winter Storm Warning	DLH	35 hr
Jan 28, 1:19 PM CST	Mesoscale Discussion	SPC	3 hr
Jan 28, 4:23 PM CST	Special Weather Statement	DLH	97 min
Jan 30, 2:46 PM CST	Wind Chill Advisory	DLH	16 hr
Jan 31, 4:13 AM CST	Winter Weather Advisory	DLH	5 hr
Jan 31, 8:58 AM CST	Lake Effect Snow Warning	DLH	12 hr
Jan 31, 3:44 PM CST	Wind Chill Advisory	DLH	17 hr
Feb 1, 3:37 AM CST	Wind Chill Advisory	DLH	30 hr
Feb 7, 2:26 PM CST	Wind Chill Advisory	DLH	20 hr
Feb 8, 3:08 PM CST	Wind Chill Advisory	DLH	19 hr
Feb 18, 1:02 AM CST	Wind Advisory	DLH	18 hr
Feb 18, 3:15 PM CST	Winter Storm Watch	DLH	24 hr
Feb 19, 3:01 PM CST	Winter Weather Advisory	DLH	51 hr
Feb 20, 2:56 PM CST	Wind Chill Advisory	DLH	14 hr
Mar 1, 3:20 AM CST	Wind Chill Advisory	DLH	30 hr
Mar 7, 12:56 PM CST	Lake Effect Snow Advisory	DLH	8 hr
Mar 14, 1:36 AM CDT	Dense Fog Advisory	DLH	3 hr
Mar 20, 2:44 AM CDT	Winter Weather Advisory	DLH	18 hr
Mar 20, 11:39 AM CDT	Dense Fog Advisory	DLH	13 hr
Mar 20, 4:03 PM CDT	Blizzard Watch	DLH	24 hr
Mar 20, 4:03 PM CDT	Winter Storm Watch	DLH	24 hr
Mar 21, 3:33 PM CDT	Blizzard Warning	DLH	37 hr
Mar 21, 3:33 PM CDT	Winter Storm Warning	DLH	51 hr
Mar 22, 4:39 AM CDT	Winter Weather Advisory	DLH	26 hr
Apr 1, 3:45 PM CDT	Winter Storm Watch	DLH	24 hr
Apr 2, 3:40 PM CDT	Winter Storm Warning	DLH	24 hr
Apr 2, 3:40 PM CDT	Winter Weather Advisory	DLH	24 hr
Apr 3, 3:29 PM CDT	Winter Weather Advisory	DLH	13 hr
Apr 10, 1:00 AM CDT	Special Weather Statement	DLH	45 min
Apr 10, 11:49 AM CDT	Special Weather Statement	DLH	41 min
Apr 10, 12:10 PM CDT	Severe Thunderstorm Warning	DLH	50 min
Apr 10, 12:45 PM CDT	Severe Thunderstorm Warning	DLH	60 min
Apr 10, 4:19 PM CDT	Special Weather Statement	DLH	26 min
Apr 15, 3:56 AM CDT	Winter Weather Advisory	DLH	32 hr
Apr 15, 3:44 PM CDT	Winter Storm Warning	DLH	23 hr
Apr 23, 1:40 AM CDT	Winter Weather Advisory	DLH	7 hr
May 10, 9:51 PM CDT	Special Weather Statement	DLH	39 min
May 10, 10:01 PM CDT	Severe Thunderstorm Warning	DLH	44 min
May 10, 10:31 PM CDT	Severe Thunderstorm Warning	DLH	29 min
May 10, 10:40 PM CDT	Severe Thunderstorm Warning	DLH	50 min
May 10, 10:57 PM CDT	Severe Thunderstorm Warning	DLH	48 min
May 10, 11:09 PM CDT	Severe Thunderstorm Warning	DLH	32 min
May 10, 11:24 PM CDT	Severe Thunderstorm Warning	DLH	51 min
May 21, 9:35 PM CDT	Dense Fog Advisory	DLH	11 hr
May 22, 11:15 PM CDT	Dense Fog Advisory	DLH	6 hr
May 24, 3:54 PM CDT	Frost Advisory	DLH	15 hr
May 25, 1:36 PM CDT	Frost Advisory	DLH	18 hr
May 25, 1:36 PM CDT	Freeze Warning	DLH	18 hr
May 26, 3:47 AM CDT	Freeze Watch	DLH	10 hr
May 26, 2:03 PM CDT	Frost Advisory	DLH	13 hr
May 26, 2:03 PM CDT	Freeze Warning	DLH	17 hr
May 28, 1:11 PM CDT	Mesoscale Discussion	SPC	94 min
May 28, 1:58 PM CDT	Special Weather Statement	DLH	32 min
May 28, 2:04 PM CDT	Special Weather Statement	DLH	36 min
May 28, 2:11 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
May 28, 2:25 PM CDT	Severe Thunderstorm Warning	DLH	50 min
May 28, 2:46 PM CDT	Severe Thunderstorm Warning	DLH	44 min
May 28, 3:23 PM CDT	Special Weather Statement	DLH	37 min
May 28, 3:37 PM CDT	Special Weather Statement	DLH	23 min
May 28, 5:22 PM CDT	Mesoscale Discussion	SPC	53 min
May 28, 5:39 PM CDT	Severe Thunderstorm Warning	DLH	51 min
May 28, 6:03 PM CDT	Severe Thunderstorm Warning	DLH	42 min
May 30, 7:04 AM CDT	Special Weather Statement	DLH	41 min
May 30, 11:55 PM CDT	Severe Thunderstorm Warning	DLH	65 min
May 31, 12:47 AM CDT	Severe Thunderstorm Warning	DLH	28 min
May 31, 4:00 AM CDT	Wind Advisory	DLH	18 hr
Jun 1, 3:11 AM CDT	Wind Advisory	DLH	12 hr
Jun 1, 3:26 PM CDT	Frost Advisory	DLH	16 hr
Jun 3, 5:28 PM CDT	Tornado Watch	SPC	5 hr
Jun 3, 6:44 PM CDT	Special Weather Statement	DLH	16 min
Jun 3, 7:03 PM CDT	Special Weather Statement	DLH	12 min
Jun 3, 7:31 PM CDT	Special Weather Statement	DLH	14 min
Jun 7, 1:32 AM CDT	Mesoscale Discussion	SPC	2 hr
Jun 7, 1:34 AM CDT	Special Weather Statement	DLH	41 min
Jun 7, 1:37 AM CDT	Severe Thunderstorm Warning	DLH	53 min
Jun 7, 1:54 AM CDT	Severe Thunderstorm Warning	DLH	51 min
Jun 7, 1:58 AM CDT	Severe Thunderstorm Warning	DLH	47 min
Jun 7, 2:23 AM CDT	Severe Thunderstorm Warning	DLH	52 min
Jun 7, 3:55 AM CDT	Severe Thunderstorm Warning	DLH	20 min
Jun 7, 6:52 AM CDT	Special Weather Statement	DLH	38 min
Jun 7, 7:25 AM CDT	Special Weather Statement	DLH	80 min
Jun 9, 3:45 PM CDT	Frost Advisory	DLH	11 hr
Jun 16, 2:12 AM CDT	Dense Fog Advisory	DLH	7 hr
Jun 16, 8:42 PM CDT	Dense Fog Advisory	DLH	12 hr
Jun 18, 3:20 PM CDT	Flash Flood Watch	DLH	18 hr
Jun 19, 5:16 AM CDT	Dense Fog Advisory	DLH	6 hr
Jun 21, 10:28 AM CDT	Wind Advisory	DLH	10 hr
Jun 21, 3:23 PM CDT	Flash Flood Watch	DLH	7 hr
Jun 21, 10:10 PM CDT	Flood Watch	DLH	17 hr
Jun 22, 4:14 AM CDT	Areal Flood Advisory	DLH	8 hr
Jun 22, 2:12 PM CDT	Areal Flood Advisory	DLH	3 hr
Jun 27, 3:19 AM CDT	Flash Flood Watch	DLH	11 hr
Jun 27, 5:21 AM CDT	Special Weather Statement	DLH	29 min
Jun 27, 7:58 AM CDT	Areal Flood Advisory	DLH	4 hr
Jun 27, 8:26 AM CDT	Flash Flood Warning	DLH	4 hr
Jun 27, 8:42 AM CDT	Severe Thunderstorm Warning	DLH	48 min
Jun 27, 9:26 AM CDT	Special Weather Statement	DLH	49 min
Jun 27, 10:50 AM CDT	Special Weather Statement	DLH	55 min
Jun 27, 12:17 PM CDT	Areal Flood Warning	DLH	3 hr
Jul 1, 6:25 AM CDT	Dense Fog Advisory	DLH	4 hr
Jul 1, 2:08 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Jul 1, 6:16 PM CDT	Severe Thunderstorm Warning	DLH	44 min
Jul 1, 6:36 PM CDT	Mesoscale Discussion	SPC	114 min
Jul 1, 7:27 PM CDT	Flash Flood Warning	DLH	4 hr
Jul 4, 6:09 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 4, 7:14 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Jul 4, 8:06 PM CDT	Severe Thunderstorm Warning	DLH	54 min
Jul 4, 8:43 PM CDT	Special Weather Statement	DLH	17 min
Jul 4, 8:50 PM CDT	Severe Thunderstorm Warning	DLH	55 min
Jul 4, 8:55 PM CDT	Severe Thunderstorm Warning	DLH	65 min
Jul 4, 9:41 PM CDT	Severe Thunderstorm Warning	DLH	64 min
Jul 4, 9:51 PM CDT	Severe Thunderstorm Warning	DLH	39 min
Jul 4, 10:06 PM CDT	Severe Thunderstorm Warning	DLH	54 min
Jul 4, 10:25 PM CDT	Severe Thunderstorm Warning	DLH	35 min
Jul 4, 10:34 PM CDT	Severe Thunderstorm Warning	DLH	41 min
Jul 4, 10:42 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 4, 10:54 PM CDT	Severe Thunderstorm Warning	DLH	51 min
Jul 4, 10:57 PM CDT	Severe Thunderstorm Warning	DLH	48 min
Jul 7, 8:08 PM CDT	Special Weather Statement	DLH	27 min
Jul 15, 3:32 AM CDT	Excessive Heat Watch	DLH	34 hr
Jul 15, 10:33 AM CDT	Special Weather Statement	DLH	42 min
Jul 15, 3:42 PM CDT	Excessive Heat Warning	DLH	5 days
Jul 16, 3:46 AM CDT	Heat Advisory	DLH	5 days
Jul 16, 2:14 PM CDT	Mesoscale Discussion	SPC	91 min
Jul 17, 1:06 PM CDT	Flash Flood Watch	DLH	14 hr
Jul 17, 4:03 PM CDT	Special Weather Statement	DLH	27 min
Jul 17, 4:34 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 17, 4:52 PM CDT	Severe Thunderstorm Warning	DLH	38 min
Jul 17, 4:58 PM CDT	Special Weather Statement	DLH	32 min
Jul 17, 5:01 PM CDT	Severe Thunderstorm Warning	DLH	44 min
Jul 17, 5:15 PM CDT	Severe Thunderstorm Warning	DLH	30 min
Jul 17, 5:41 PM CDT	Severe Thunderstorm Warning	DLH	21 min
Jul 19, 12:41 PM CDT	Severe Thunderstorm Warning	DLH	49 min
Jul 19, 1:47 PM CDT	Severe Thunderstorm Warning	DLH	58 min
Jul 19, 2:14 PM CDT	Severe Thunderstorm Warning	DLH	46 min
Jul 20, 6:55 PM CDT	Mesoscale Discussion	SPC	95 min
Jul 23, 7:19 AM CDT	Special Weather Statement	DLH	41 min
Jul 23, 7:46 AM CDT	Special Weather Statement	DLH	44 min
Jul 23, 8:52 AM CDT	Flash Flood Warning	DLH	71 min
Jul 30, 10:10 AM CDT	Special Weather Statement	DLH	50 min
Aug 1, 8:37 AM CDT	Special Weather Statement	DLH	53 min
Aug 1, 9:38 AM CDT	Special Weather Statement	DLH	52 min
Aug 1, 3:25 PM CDT	Flash Flood Watch	DLH	21 hr
Aug 1, 11:31 PM CDT	Special Weather Statement	DLH	29 min
Aug 2, 12:40 AM CDT	Flash Flood Warning	DLH	4 hr
Aug 2, 12:52 AM CDT	Special Weather Statement	DLH	23 min
Aug 2, 1:16 AM CDT	Special Weather Statement	DLH	29 min
Aug 2, 1:39 AM CDT	Areal Flood Advisory	DLH	3 hr
Aug 8, 12:19 PM CDT	Mesoscale Discussion	SPC	56 min
Aug 8, 2:34 PM CDT	Special Weather Statement	DLH	56 min
Aug 8, 3:23 PM CDT	Special Weather Statement	DLH	52 min
Aug 8, 3:33 PM CDT	Severe Thunderstorm Warning	DLH	29 min
Aug 8, 3:55 PM CDT	Special Weather Statement	DLH	50 min
Aug 8, 4:00 PM CDT	Severe Thunderstorm Warning	DLH	45 min
Aug 8, 5:45 PM CDT	Severe Thunderstorm Warning	DLH	45 min
Aug 8, 6:15 PM CDT	Areal Flood Advisory	DLH	3 hr
Aug 8, 6:24 PM CDT	Severe Thunderstorm Warning	DLH	21 min
Aug 8, 6:56 PM CDT	Flash Flood Warning	DLH	96 min
Aug 12, 12:01 PM CDT	Special Weather Statement	DLH	74 min
Aug 12, 1:47 PM CDT	Special Weather Statement	DLH	28 min
Aug 12, 2:03 PM CDT	Special Weather Statement	DLH	27 min
Aug 12, 3:06 PM CDT	Severe Thunderstorm Warning	DLH	13 min
Aug 12, 3:44 PM CDT	Mesoscale Discussion	SPC	91 min
Aug 14, 3:31 AM CDT	Dense Fog Advisory	DLH	6 hr
Aug 16, 2:44 PM CDT	Special Weather Statement	DLH	46 min
Aug 16, 5:08 PM CDT	Special Weather Statement	DLH	52 min
Aug 18, 6:39 PM CDT	Special Weather Statement	DLH	51 min
Aug 19, 3:14 AM CDT	Severe Thunderstorm Warning	DLH	61 min
Aug 19, 4:09 AM CDT	Severe Thunderstorm Warning	DLH	51 min
Aug 19, 4:48 AM CDT	Severe Thunderstorm Warning	DLH	42 min
Aug 20, 6:06 PM CDT	Special Weather Statement	DLH	24 min
Aug 20, 6:14 PM CDT	Special Weather Statement	DLH	46 min
Aug 20, 7:08 PM CDT	Special Weather Statement	DLH	52 min
Aug 26, 4:31 AM CDT	Special Weather Statement	DLH	44 min
Aug 26, 5:15 AM CDT	Special Weather Statement	DLH	30 min
Aug 26, 5:24 AM CDT	Severe Thunderstorm Warning	DLH	21 min
Aug 26, 5:48 AM CDT	Special Weather Statement	DLH	42 min
Sep 1, 5:07 AM CDT	Special Weather Statement	DLH	53 min
Sep 1, 1:41 PM CDT	Special Weather Statement	DLH	49 min
Sep 1, 8:57 PM CDT	Mesoscale Discussion	SPC	93 min
Sep 1, 10:26 PM CDT	Severe Thunderstorm Warning	DLH	49 min
Sep 2, 1:39 AM CDT	Dense Fog Advisory	DLH	2 hr
Sep 4, 3:36 PM CDT	Frost Advisory	DLH	11 hr
Sep 12, 1:15 PM CDT	Mesoscale Discussion	SPC	2 hr
Sep 12, 4:47 PM CDT	Severe Thunderstorm Warning	DLH	13 min
Sep 13, 4:11 AM CDT	Freeze Watch	DLH	24 hr
Sep 13, 2:56 PM CDT	Special Weather Statement	DLH	34 min
Sep 13, 3:12 PM CDT	Frost Advisory	DLH	17 hr
Sep 13, 3:52 PM CDT	Special Weather Statement	DLH	38 min
Sep 13, 4:29 PM CDT	Special Weather Statement	DLH	46 min
Sep 13, 5:13 PM CDT	Special Weather Statement	DLH	47 min
Sep 13, 7:03 PM CDT	Special Weather Statement	DLH	57 min
Sep 13, 7:17 PM CDT	Special Weather Statement	DLH	43 min
Sep 14, 4:20 AM CDT	Freeze Warning	DLH	28 hr
Sep 14, 5:33 PM CDT	Special Weather Statement	DLH	42 min
Sep 14, 6:41 PM CDT	Special Weather Statement	DLH	64 min
Sep 15, 3:55 PM CDT	Freeze Warning	DLH	16 hr
Sep 20, 3:45 PM CDT	Mesoscale Discussion	SPC	2 hr
Sep 20, 4:47 PM CDT	Special Weather Statement	DLH	58 min
Sep 28, 5:23 PM CDT	Wind Advisory	DLH	25 hr
Sep 29, 7:52 AM CDT	Special Weather Statement	DLH	23 min
Oct 5, 4:42 AM CDT	Red Flag Warning	DLH	38 hr
Oct 6, 2:31 AM CDT	Dense Fog Advisory	DLH	6 hr
Oct 6, 2:21 PM CDT	Wind Advisory	DLH	38 hr
Oct 6, 2:42 PM CDT	Fire Weather Watch	DLH	12 hr
Oct 7, 2:57 AM CDT	Red Flag Warning	DLH	19 hr
Oct 7, 10:12 PM CDT	Special Weather Statement	DLH	78 min
Oct 7, 11:10 PM CDT	Special Weather Statement	DLH	50 min
Oct 7, 11:29 PM CDT	Special Weather Statement	DLH	46 min
Oct 12, 3:39 PM CDT	Special Weather Statement	DLH	21 min
Oct 12, 4:03 PM CDT	Special Weather Statement	DLH	27 min
Oct 12, 4:39 PM CDT	Special Weather Statement	DLH	36 min
Oct 14, 3:43 AM CDT	Wind Advisory	DLH	12 hr
Nov 3, 2:30 PM CDT	Fire Weather Watch	DLH	18 hr
Nov 15, 4:12 PM CST	Special Weather Statement	DLH	63 min
Nov 15, 8:50 PM CST	Special Weather Statement	DLH	55 min
Nov 18, 3:31 PM CST	Winter Weather Advisory	DLH	31 hr
Nov 25, 3:30 PM CST	Winter Weather Advisory	DLH	23 hr
Dec 11, 3:32 PM CST	Freezing Rain Advisory	DLH	53 hr
Dec 14, 12:29 AM CST	Dense Fog Advisory	DLH	4 hr
Dec 14, 11:37 AM CST	Dense Fog Advisory	DLH	10 hr
Dec 31, 4:48 AM CST	Winter Weather Advisory	DLH	29 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	49
Severe Thunderstorm Watch	4
Tornado Watch	1
Mesoscale Discussion	14
Special Weather Statement	68
Flooding
Areal Flood Warning	1
Flash Flood Warning	5
Flash Flood Watch	5
Flood Watch	1
Areal Flood Advisory	5
Winter
Blizzard Warning	1
Lake Effect Snow Warning	1
Winter Storm Warning	5
Blizzard Watch	1
Winter Storm Watch	4
Freezing Rain Advisory	1
Lake Effect Snow Advisory	1
Winter Weather Advisory	17
Heat
Excessive Heat Warning	1
Excessive Heat Watch	1
Heat Advisory	1
Cold
Extreme Cold Warning	1
Freeze Warning	4
Wind Chill Warning	1
Freeze Watch	2
Frost Advisory	7
Wind Chill Advisory	14
Wind and dust
Wind Advisory	7
Fire
Red Flag Warning	2
Fire Weather Watch	2
Fog and smoke
Dense Fog Advisory	13

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2010 2012

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.