Alert archive / Minnesota / Saint Louis County

Weather alerts in Saint Louis County, Minnesota, 2019

247 weather alerts in 2019, 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 2019. Tap one for its archive.

Alerts: 247
Warnings: 71
Watches: 24
Advisories: 81
Busiest month: July48 alerts
Busiest day: June 4, 201916 alerts

Over time

By month

Warning verification

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

2 of 3 tornado warnings covering Saint Louis County in 2019 had a tornado report inside them; 3 of 3 tornado reports fell inside a warning, on average 13 minutes after it went out.

Saint Louis County, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	3	2	33%	3	100%	13 min
Severe thunderstorm warnings	37	14	62%	20	55%	25 min
Flash flood warnings	0			0

Each office's whole area, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Duluth, MN: tornado warnings	10	4	60%	13	38%	11 min
NWS Duluth, MN: severe thunderstorm warnings	142	50	65%	138	66%	22 min
NWS Duluth, MN: flash flood warnings	9	5	44%	9	67%	68 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 1, 1:38 PM CST	Wind Chill Advisory	DLH	18 hr
Jan 5, 3:14 AM CST	Winter Storm Watch	DLH	24 hr
Jan 5, 2:53 PM CST	Winter Storm Warning	DLH	40 hr
Jan 6, 3:29 AM CST	Winter Weather Advisory	DLH	36 hr
Jan 11, 9:11 AM CST	Winter Weather Advisory	DLH	25 hr
Jan 15, 3:06 AM CST	Dense Fog Advisory	DLH	3 hr
Jan 15, 2:10 PM CST	Wind Chill Advisory	DLH	19 hr
Jan 17, 3:35 AM CST	Wind Chill Advisory	DLH	32 hr
Jan 18, 2:51 PM CST	Wind Chill Advisory	DLH	21 hr
Jan 19, 2:20 PM CST	Wind Chill Warning	DLH	22 hr
Jan 19, 2:20 PM CST	Wind Chill Advisory	DLH	22 hr
Jan 20, 3:15 PM CST	Wind Chill Advisory	DLH	18 hr
Jan 20, 3:15 PM CST	Winter Weather Advisory	DLH	45 hr
Jan 23, 3:08 PM CST	Wind Chill Advisory	DLH	45 hr
Jan 24, 3:05 AM CST	Wind Chill Watch	DLH	12 hr
Jan 24, 3:31 PM CST	Wind Chill Warning	DLH	20 hr
Jan 24, 3:31 PM CST	Wind Chill Advisory	DLH	20 hr
Jan 25, 12:15 PM CST	Wind Chill Warning	DLH	24 hr
Jan 25, 12:15 PM CST	Wind Chill Advisory	DLH	24 hr
Jan 26, 3:45 PM CST	Wind Chill Warning	DLH	20 hr
Jan 26, 3:45 PM CST	Winter Weather Advisory	DLH	42 hr
Jan 27, 2:28 PM CST	Wind Chill Advisory	DLH	18 hr
Jan 28, 4:20 AM CST	Wind Chill Watch	DLH	10 hr
Jan 28, 1:59 PM CST	Wind Chill Warning	DLH	69 hr
Feb 1, 3:24 AM CST	Wind Chill Advisory	DLH	6 hr
Feb 2, 2:32 PM CST	Winter Weather Advisory	DLH	21 hr
Feb 3, 3:06 AM CST	Winter Storm Warning	DLH	36 hr
Feb 3, 3:06 AM CST	Winter Weather Advisory	DLH	36 hr
Feb 3, 6:39 AM CST	Dense Fog Advisory	DLH	5 hr
Feb 4, 2:50 PM CST	Wind Chill Advisory	DLH	18 hr
Feb 5, 3:06 AM CST	Winter Weather Advisory	DLH	27 hr
Feb 5, 3:39 PM CST	Winter Weather Advisory	DLH	43 hr
Feb 6, 10:49 AM CST	Winter Storm Warning	DLH	37 hr
Feb 7, 2:52 PM CST	Wind Chill Advisory	DLH	21 hr
Feb 8, 2:17 PM CST	Wind Chill Advisory	DLH	20 hr
Feb 10, 9:04 PM CST	Winter Weather Advisory	DLH	12 hr
Feb 11, 1:05 AM CST	Winter Storm Warning	DLH	9 hr
Feb 11, 3:04 PM CST	Winter Weather Advisory	DLH	30 hr
Feb 19, 3:39 AM CST	Winter Storm Watch	DLH	11 hr
Feb 19, 3:39 AM CST	Winter Storm Warning	DLH	47 hr
Feb 19, 2:32 PM CST	Winter Weather Advisory	DLH	36 hr
Feb 22, 3:26 AM CST	Winter Storm Watch	DLH	35 hr
Feb 23, 2:51 PM CST	Blizzard Warning	DLH	30 hr
Feb 23, 2:51 PM CST	Winter Weather Advisory	DLH	33 hr
Feb 24, 5:58 PM CST	Wind Chill Advisory	DLH	17 hr
Feb 24, 5:58 PM CST	Winter Weather Advisory	DLH	6 hr
Feb 25, 2:43 PM CST	Wind Chill Advisory	DLH	18 hr
Mar 2, 3:08 AM CST	Wind Chill Advisory	DLH	33 hr
Mar 3, 2:42 AM CST	Wind Chill Advisory	DLH	33 hr
Mar 4, 9:27 PM CST	Wind Chill Advisory	DLH	9 hr
Mar 7, 4:08 AM CST	Winter Storm Watch	DLH	40 hr
Mar 8, 3:53 AM CST	Winter Storm Warning	DLH	56 hr
Mar 8, 8:23 PM CST	Winter Weather Advisory	DLH	39 hr
Mar 12, 3:05 AM CDT	Flood Watch	DLH	68 hr
Mar 12, 6:46 PM CDT	Dense Fog Advisory	DLH	18 hr
Mar 13, 7:10 PM CDT	Areal Flood Advisory	DLH	8 hr
Apr 7, 8:30 AM CDT	Dense Fog Advisory	DLH	9 hr
Apr 7, 5:11 PM CDT	Dense Fog Advisory	DLH	6 hr
Apr 9, 4:00 AM CDT	Winter Storm Watch	DLH	24 hr
Apr 9, 10:06 PM CDT	Lakeshore Flood Watch	DLH	18 hr
Apr 10, 4:05 AM CDT	Winter Storm Warning	DLH	57 hr
Apr 10, 3:50 PM CDT	Lakeshore Flood Warning	DLH	36 hr
Apr 11, 3:48 PM CDT	Mesoscale Discussion	SPC	6 hr
Apr 28, 3:50 PM CDT	Winter Weather Advisory	DLH	27 hr
May 8, 9:51 AM CDT	Winter Weather Advisory	DLH	24 hr
May 8, 2:27 PM CDT	Winter Storm Warning	DLH	20 hr
May 19, 8:56 AM CDT	Wind Advisory	DLH	6 hr
May 19, 10:40 AM CDT	Winter Weather Advisory	DLH	14 hr
May 25, 12:14 AM CDT	Special Weather Statement	DLH	31 min
May 25, 12:22 AM CDT	Severe Thunderstorm Warning	DLH	23 min
May 25, 12:46 AM CDT	Special Weather Statement	DLH	29 min
May 25, 4:01 AM CDT	Dense Fog Advisory	DLH	6 hr
May 27, 2:45 PM CDT	Frost Advisory	DLH	17 hr
Jun 1, 2:52 AM CDT	Frost Advisory	DLH	29 hr
Jun 1, 3:21 PM CDT	Freeze Warning	DLH	17 hr
Jun 2, 3:09 PM CDT	Frost Advisory	DLH	16 hr
Jun 2, 3:09 PM CDT	Freeze Warning	DLH	16 hr
Jun 3, 3:50 AM CDT	Beach Hazards Statement	DLH	16 hr
Jun 4, 12:45 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 4, 12:52 PM CDT	Severe Thunderstorm Warning	DLH	38 min
Jun 4, 1:50 PM CDT	Severe Thunderstorm Warning	DLH	25 min
Jun 4, 2:10 PM CDT	Severe Thunderstorm Warning	DLH	50 min
Jun 4, 2:47 PM CDT	Mesoscale Discussion	SPC	118 min
Jun 4, 2:50 PM CDT	Special Weather Statement	DLH	10 min
Jun 4, 3:04 PM CDT	Special Weather Statement	DLH	11 min
Jun 4, 3:17 PM CDT	Special Weather Statement	DLH	13 min
Jun 4, 3:42 PM CDT	Special Weather Statement	DLH	33 min
Jun 4, 3:57 PM CDT	Severe Thunderstorm Warning	DLH	18 min
Jun 4, 4:02 PM CDT	Severe Thunderstorm Warning	DLH	28 min
Jun 4, 4:30 PM CDT	Severe Thunderstorm Warning	DLH	30 min
Jun 4, 4:59 PM CDT	Severe Thunderstorm Warning	DLH	31 min
Jun 4, 5:19 PM CDT	Areal Flood Advisory	DLH	5 hr
Jun 4, 5:32 PM CDT	Areal Flood Advisory	DLH	6 hr
Jun 4, 5:43 PM CDT	Special Weather Statement	DLH	17 min
Jun 4, 11:22 PM CDT	Dense Fog Advisory	DLH	10 hr
Jun 10, 12:05 PM CDT	Special Weather Statement	DLH	25 min
Jun 10, 12:14 PM CDT	Special Weather Statement	DLH	31 min
Jun 10, 12:32 PM CDT	Special Weather Statement	DLH	28 min
Jun 10, 1:07 PM CDT	Special Weather Statement	DLH	23 min
Jun 11, 4:39 PM CDT	Special Weather Statement	DLH	21 min
Jun 11, 5:20 PM CDT	Special Weather Statement	DLH	25 min
Jun 12, 3:06 PM CDT	Frost Advisory	DLH	16 hr
Jun 15, 4:19 AM CDT	Beach Hazards Statement	DLH	15 hr
Jun 16, 3:13 AM CDT	Beach Hazards Statement	DLH	17 hr
Jun 21, 3:33 AM CDT	Beach Hazards Statement	DLH	17 hr
Jun 22, 3:31 AM CDT	Beach Hazards Statement	DLH	17 hr
Jun 23, 3:48 AM CDT	Beach Hazards Statement	DLH	17 hr
Jun 28, 2:49 AM CDT	Dense Fog Advisory	DLH	5 hr
Jun 29, 11:29 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 30, 1:41 AM CDT	Severe Thunderstorm Warning	DLH	49 min
Jun 30, 2:24 AM CDT	Severe Thunderstorm Warning	DLH	51 min
Jun 30, 2:39 AM CDT	Severe Thunderstorm Warning	DLH	51 min
Jun 30, 3:12 AM CDT	Severe Thunderstorm Warning	DLH	48 min
Jun 30, 7:22 AM CDT	Areal Flood Advisory	DLH	4 hr
Jul 4, 1:31 PM CDT	Flash Flood Watch	DLH	5 hr
Jul 6, 3:39 AM CDT	Beach Hazards Statement	DLH	16 hr
Jul 10, 5:36 AM CDT	Special Weather Statement	DLH	24 min
Jul 10, 6:04 AM CDT	Special Weather Statement	DLH	26 min
Jul 10, 6:38 AM CDT	Special Weather Statement	DLH	37 min
Jul 10, 4:05 PM CDT	Special Weather Statement	DLH	25 min
Jul 10, 5:19 PM CDT	Special Weather Statement	DLH	26 min
Jul 12, 2:26 AM CDT	Severe Thunderstorm Warning	DLH	29 min
Jul 15, 12:03 PM CDT	Mesoscale Discussion	SPC	87 min
Jul 15, 1:17 PM CDT	Severe Thunderstorm Warning	DLH	28 min
Jul 15, 1:50 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 15, 2:34 PM CDT	Special Weather Statement	DLH	41 min
Jul 15, 2:45 PM CDT	Special Weather Statement	DLH	15 min
Jul 15, 2:53 PM CDT	Special Weather Statement	DLH	22 min
Jul 15, 2:54 PM CDT	Severe Thunderstorm Warning	DLH	51 min
Jul 15, 3:18 PM CDT	Special Weather Statement	DLH	12 min
Jul 15, 3:33 PM CDT	Severe Thunderstorm Warning	DLH	42 min
Jul 15, 3:38 PM CDT	Special Weather Statement	DLH	22 min
Jul 15, 4:19 PM CDT	Special Weather Statement	DLH	11 min
Jul 15, 4:26 PM CDT	Severe Thunderstorm Warning	DLH	34 min
Jul 15, 4:53 PM CDT	Severe Thunderstorm Warning	DLH	30 min
Jul 17, 3:25 AM CDT	Beach Hazards Statement	DLH	18 hr
Jul 17, 5:06 PM CDT	Tornado Watch	SPC	5 hr
Jul 17, 6:24 PM CDT	Mesoscale Discussion	SPC	96 min
Jul 17, 7:15 PM CDT	Severe Thunderstorm Warning	DLH	30 min
Jul 17, 7:30 PM CDT	Tornado Warning	DLH	45 min
Jul 17, 7:45 PM CDT	Severe Thunderstorm Warning	DLH	30 min
Jul 17, 8:07 PM CDT	Tornado Warning Tornado observed	DLH	23 min
Jul 17, 8:10 PM CDT	Severe Thunderstorm Warning	DLH	50 min
Jul 17, 8:18 PM CDT	Severe Thunderstorm Warning	DLH	27 min
Jul 17, 8:29 PM CDT	Tornado Warning	DLH	46 min
Jul 17, 9:01 PM CDT	Severe Thunderstorm Warning	DLH	44 min
Jul 17, 9:13 PM CDT	Severe Thunderstorm Warning	DLH	47 min
Jul 17, 9:56 PM CDT	Severe Thunderstorm Warning	DLH	64 min
Jul 25, 5:13 PM CDT	Special Weather Statement	DLH	32 min
Jul 25, 5:59 PM CDT	Severe Thunderstorm Warning	DLH	46 min
Jul 25, 6:40 PM CDT	Severe Thunderstorm Warning	DLH	24 min
Jul 26, 1:46 AM CDT	Special Weather Statement	DLH	29 min
Jul 26, 2:13 AM CDT	Special Weather Statement	DLH	32 min
Jul 26, 1:40 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 26, 2:26 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 26, 4:09 PM CDT	Special Weather Statement	DLH	21 min
Jul 26, 4:18 PM CDT	Severe Thunderstorm Warning	DLH	42 min
Jul 26, 4:48 PM CDT	Special Weather Statement	DLH	12 min
Jul 26, 4:58 PM CDT	Severe Thunderstorm Warning	DLH	32 min
Jul 26, 5:09 PM CDT	Severe Thunderstorm Warning	DLH	51 min
Jul 26, 5:59 PM CDT	Severe Thunderstorm Warning	DLH	46 min
Jul 26, 6:48 PM CDT	Severe Thunderstorm Warning	DLH	42 min
Aug 2, 2:55 PM CDT	Special Weather Statement	DLH	35 min
Aug 2, 3:50 PM CDT	Special Weather Statement	DLH	10 min
Aug 2, 4:04 PM CDT	Special Weather Statement	DLH	11 min
Aug 3, 12:50 PM CDT	Special Weather Statement	DLH	25 min
Aug 3, 2:57 PM CDT	Special Weather Statement	DLH	33 min
Aug 3, 4:03 PM CDT	Special Weather Statement	DLH	27 min
Aug 5, 6:50 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 5, 7:53 AM CDT	Severe Thunderstorm Warning	DLH	37 min
Aug 5, 8:20 AM CDT	Severe Thunderstorm Warning	DLH	40 min
Aug 5, 8:22 AM CDT	Severe Thunderstorm Warning	DLH	38 min
Aug 5, 8:54 AM CDT	Severe Thunderstorm Warning	DLH	51 min
Aug 5, 8:57 AM CDT	Severe Thunderstorm Warning	DLH	48 min
Aug 6, 5:34 PM CDT	Special Weather Statement	DLH	26 min
Aug 6, 5:58 PM CDT	Special Weather Statement	DLH	32 min
Aug 13, 3:23 AM CDT	Beach Hazards Statement	DLH	18 hr
Aug 23, 4:46 AM CDT	Beach Hazards Statement	DLH	14 hr
Sep 2, 9:10 AM CDT	Beach Hazards Statement	DLH	11 hr
Sep 3, 9:06 AM CDT	Beach Hazards Statement	DLH	11 hr
Sep 5, 3:30 AM CDT	Beach Hazards Statement	DLH	16 hr
Sep 8, 3:46 AM CDT	Beach Hazards Statement	DLH	18 hr
Sep 9, 3:36 AM CDT	Beach Hazards Statement	DLH	17 hr
Sep 10, 5:40 AM CDT	Beach Hazards Statement	DLH	4 hr
Sep 11, 4:04 AM CDT	Beach Hazards Statement	DLH	42 hr
Sep 15, 7:44 PM CDT	Dense Fog Advisory	DLH	15 hr
Sep 16, 9:20 PM CDT	Dense Fog Advisory	DLH	12 hr
Sep 17, 12:34 PM CDT	Special Weather Statement	DLH	11 min
Sep 17, 1:56 PM CDT	Special Weather Statement	DLH	19 min
Sep 17, 2:24 PM CDT	Special Weather Statement	DLH	21 min
Sep 17, 2:32 PM CDT	Special Weather Statement	DLH	13 min
Sep 17, 5:10 PM CDT	Areal Flood Advisory	DLH	3 hr
Sep 18, 6:12 AM CDT	Special Weather Statement	DLH	33 min
Sep 20, 1:33 AM CDT	Dense Fog Advisory	DLH	8 hr
Sep 20, 2:53 AM CDT	Beach Hazards Statement	DLH	16 hr
Sep 21, 2:17 AM CDT	Dense Fog Advisory	DLH	8 hr
Sep 24, 11:27 PM CDT	Special Weather Statement	DLH	33 min
Sep 25, 12:08 AM CDT	Special Weather Statement	DLH	7 min
Sep 25, 3:42 PM CDT	Frost Advisory	DLH	17 hr
Sep 27, 1:52 PM CDT	Frost Advisory	DLH	17 hr
Sep 29, 3:37 AM CDT	Beach Hazards Statement	DLH	18 hr
Sep 30, 3:16 AM CDT	Flood Watch	DLH	9 hr
Sep 30, 3:43 AM CDT	Beach Hazards Statement	DLH	16 hr
Sep 30, 6:03 PM CDT	Areal Flood Advisory	DLH	3 hr
Oct 3, 3:03 PM CDT	Frost Advisory	DLH	17 hr
Oct 6, 3:00 PM CDT	Frost Advisory	DLH	18 hr
Oct 11, 3:36 PM CDT	Winter Weather Advisory	DLH	32 hr
Oct 21, 10:27 AM CDT	Coastal Flood Advisory	DLH	5 hr
Oct 21, 3:29 PM CDT	Lakeshore Flood Warning	DLH	7 hr
Oct 21, 3:58 PM CDT	High Wind Warning	DLH	4 hr
Nov 16, 3:02 PM CST	Winter Weather Advisory	DLH	25 hr
Nov 19, 6:39 PM CST	Dense Fog Advisory	DLH	6 hr
Nov 20, 3:53 AM CST	Winter Storm Warning	DLH	32 hr
Nov 20, 3:53 AM CST	Winter Weather Advisory	DLH	38 hr
Nov 20, 7:35 PM CST	Mesoscale Discussion	SPC	4 hr
Nov 24, 2:47 PM CST	Winter Storm Watch	DLH	37 hr
Nov 25, 3:10 PM CST	Winter Storm Warning	DLH	53 hr
Nov 26, 3:24 AM CST	Winter Weather Advisory	DLH	32 hr
Nov 26, 3:58 AM CST	Lakeshore Flood Warning	DLH	35 hr
Nov 27, 3:58 PM CST	Winter Storm Watch	DLH	45 hr
Nov 28, 3:28 AM CST	Lakeshore Flood Watch	DLH	24 hr
Nov 29, 3:26 AM CST	Blizzard Warning	DLH	57 hr
Nov 29, 3:26 AM CST	Winter Storm Warning	DLH	60 hr
Nov 29, 3:53 AM CST	Lakeshore Flood Warning	DLH	66 hr
Dec 7, 3:29 PM CST	Winter Weather Advisory	DLH	51 hr
Dec 8, 3:57 AM CST	Winter Storm Warning	DLH	44 hr
Dec 9, 3:06 PM CST	Wind Chill Advisory	DLH	21 hr
Dec 10, 2:48 AM CST	Wind Chill Advisory	DLH	33 hr
Dec 11, 3:40 AM CST	Winter Weather Advisory	DLH	35 hr
Dec 12, 2:31 PM CST	Winter Storm Watch	DLH	13 hr
Dec 12, 5:09 PM CST	Winter Weather Advisory	DLH	2 hr
Dec 13, 3:25 AM CST	Winter Storm Warning	DLH	26 hr
Dec 13, 3:25 AM CST	Winter Weather Advisory	DLH	49 hr
Dec 16, 2:08 PM CST	Wind Chill Watch	DLH	24 hr
Dec 17, 2:27 PM CST	Wind Chill Warning	DLH	20 hr
Dec 17, 2:27 PM CST	Wind Chill Advisory	DLH	17 hr
Dec 24, 3:25 PM CST	Dense Fog Advisory	DLH	42 hr
Dec 25, 3:53 AM CST	Winter Weather Advisory	DLH	31 hr
Dec 26, 2:33 PM CST	Winter Storm Watch	DLH	24 hr
Dec 27, 2:46 PM CST	Winter Storm Warning	DLH	3 days
Dec 27, 2:46 PM CST	Winter Weather Advisory	DLH	40 hr
Dec 28, 7:16 AM CST	Lakeshore Flood Advisory	DLH	9 hr
Dec 28, 4:44 PM CST	Lakeshore Flood Warning	DLH	29 hr
Dec 29, 3:43 AM CST	Winter Storm Watch	DLH	12 hr
Dec 29, 4:46 AM CST	Mesoscale Discussion	SPC	4 hr
Dec 29, 3:34 PM CST	Winter Storm Warning	DLH	38 hr
Dec 29, 3:34 PM CST	Winter Weather Advisory	DLH	28 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	37
Tornado Warning	3
Severe Thunderstorm Watch	5
Tornado Watch	1
Mesoscale Discussion	7
Special Weather Statement	44
Flooding
Flash Flood Watch	1
Flood Watch	2
Areal Flood Advisory	6
Winter
Blizzard Warning	2
Winter Storm Warning	15
Winter Storm Watch	10
Winter Weather Advisory	28
Cold
Freeze Warning	2
Wind Chill Warning	6
Wind Chill Watch	3
Frost Advisory	8
Wind Chill Advisory	22
Wind and dust
High Wind Warning	1
Wind Advisory	1
Fog and smoke
Dense Fog Advisory	14
Coast and beach
Lakeshore Flood Warning	5
Lakeshore Flood Watch	2
Coastal Flood Advisory	1
Lakeshore Flood Advisory	1
Beach Hazards Statement	20

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2018 2020

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.