Alert archive / Minnesota / Cook County
Weather alerts in Cook County, Minnesota, 2023
117 weather alerts in 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Cook County and its neighbors
Each county as a circle sized by its count in 2023. Tap one for its archive.
- Alerts
- 117
- Warnings
- 21
- Watches
- 14
- Advisories
- 54
- Busiest month
- April18 alerts
- Busiest day
- July 26, 202310 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Cook County, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 5 | 2 | 60% | 6 | 50% | 18 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Duluth, MN: tornado warnings | 6 | 0 | 100% | 0 | ||
| NWS Duluth, MN: severe thunderstorm warnings | 85 | 53 | 38% | 201 | 67% | 23 min |
| NWS Duluth, MN: flash flood warnings | 6 | 3 | 50% | 15 | 60% | 44 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, 3:30 AM CST | Winter Weather Advisory | DLH | 9 hr |
| Jan 10, 3:23 AM CST | Winter Weather Advisory | DLH | 30 hr |
| Jan 16, 1:47 AM CST | Winter Weather Advisory | DLH | 32 hr |
| Jan 24, 2:40 PM CST | Winter Weather Advisory | DLH | 23 hr |
| Jan 26, 1:40 PM CST | Winter Weather Advisory | DLH | 20 hr |
| Jan 27, 1:39 PM CST | Wind Chill Advisory | DLH | 22 hr |
| Jan 28, 2:11 PM CST | Wind Chill Advisory | DLH | 23 hr |
| Jan 29, 1:53 PM CST | Wind Chill Advisory | DLH | 22 hr |
| Jan 30, 1:36 PM CST | Wind Chill Advisory | DLH | 20 hr |
| Jan 31, 1:36 PM CST | Wind Chill Watch | DLH | 24 hr |
| Jan 31, 1:36 PM CST | Wind Chill Advisory | DLH | 20 hr |
| Feb 1, 1:47 PM CST | Wind Chill Warning | DLH | 44 hr |
| Feb 1, 1:47 PM CST | Wind Chill Advisory | DLH | 46 hr |
| Feb 1, 1:50 PM CST | Wind Advisory | DLH | 34 hr |
| Feb 3, 9:54 AM CST | Wind Chill Advisory | DLH | 2 hr |
| Feb 6, 1:40 PM CST | Winter Weather Advisory | DLH | 13 hr |
| Feb 14, 2:38 AM CST | Winter Weather Advisory | DLH | 35 hr |
| Feb 14, 9:40 PM CST | Wind Advisory | DLH | 5 hr |
| Feb 16, 1:21 PM CST | Wind Chill Advisory | DLH | 20 hr |
| Feb 19, 3:05 AM CST | Winter Weather Advisory | DLH | 42 hr |
| Feb 20, 3:04 AM CST | Winter Storm Warning | DLH | 18 hr |
| Feb 21, 3:04 AM CST | Wind Chill Advisory | DLH | 31 hr |
| Feb 22, 2:20 PM CST | Wind Chill Advisory | DLH | 22 hr |
| Feb 23, 2:00 PM CST | Wind Chill Advisory | DLH | 19 hr |
| Feb 25, 2:51 PM CST | Winter Storm Watch | DLH | 24 hr |
| Feb 26, 2:46 PM CST | Winter Storm Warning | DLH | 30 hr |
| Feb 26, 2:46 PM CST | Winter Weather Advisory | DLH | 28 hr |
| Feb 28, 3:16 AM CST | Winter Weather Advisory | DLH | 41 hr |
| Mar 10, 3:19 AM CST | Winter Storm Watch | DLH | 11 hr |
| Mar 10, 2:16 PM CST | Winter Storm Warning | DLH | 61 hr |
| Mar 12, 12:39 PM CDT | Winter Weather Advisory | DLH | 15 hr |
| Mar 14, 3:21 AM CDT | Winter Storm Watch | DLH | 36 hr |
| Mar 15, 3:08 PM CDT | Winter Storm Warning | DLH | 70 hr |
| Mar 17, 3:16 AM CDT | Winter Weather Advisory | DLH | 24 hr |
| Mar 20, 4:00 AM CDT | Winter Storm Watch | DLH | 24 hr |
| Mar 20, 3:59 PM CDT | Winter Storm Warning | DLH | 45 hr |
| Mar 21, 4:14 AM CDT | Winter Weather Advisory | DLH | 33 hr |
| Mar 29, 2:34 PM CDT | Winter Weather Advisory | DLH | 43 hr |
| Apr 2, 3:44 AM CDT | Winter Storm Watch | DLH | 35 hr |
| Apr 3, 2:48 PM CDT | Winter Storm Warning | DLH | 45 hr |
| Apr 5, 5:03 AM CDT | Special Weather Statement | DLH | 27 min |
| Apr 5, 5:47 AM CDT | Special Weather Statement | DLH | 28 min |
| Apr 5, 6:14 AM CDT | Special Weather Statement | DLH | 31 min |
| Apr 5, 6:44 AM CDT | Special Weather Statement | DLH | 16 min |
| Apr 5, 9:59 AM CDT | Winter Weather Advisory | DLH | 8 hr |
| Apr 13, 3:43 PM CDT | Areal Flood Advisory | DLH | 66 hr |
| Apr 15, 2:48 AM CDT | Winter Storm Watch | DLH | 25 hr |
| Apr 15, 2:34 PM CDT | Winter Storm Warning | DLH | 54 hr |
| Apr 16, 9:30 AM CDT | Areal Flood Advisory | DLH | 8 days |
| Apr 16, 2:32 PM CDT | Blizzard Warning | DLH | 32 hr |
| Apr 17, 4:48 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 19, 4:16 AM CDT | Winter Storm Watch | DLH | 11 hr |
| Apr 19, 3:00 PM CDT | Winter Weather Advisory | DLH | 52 hr |
| Apr 20, 3:01 AM CDT | Winter Storm Warning | DLH | 25 hr |
| Apr 27, 12:10 PM CDT | Flood Watch | DLH | 50 hr |
| Apr 29, 2:35 PM CDT | Wind Advisory | DLH | 70 hr |
| May 5, 1:56 PM CDT | Areal Flood Advisory | DLH | 10 days |
| May 13, 2:45 PM CDT | Fire Weather Watch | DLH | 38 hr |
| May 19, 3:20 PM CDT | Frost Advisory | DLH | 16 hr |
| May 24, 2:41 PM CDT | Frost Advisory | DLH | 16 hr |
| May 25, 1:54 PM CDT | Frost Advisory | DLH | 17 hr |
| May 28, 2:32 AM CDT | Red Flag Warning | DLH | 18 hr |
| May 28, 2:40 PM CDT | Fire Weather Watch | DLH | 13 hr |
| May 29, 10:33 AM CDT | Red Flag Warning | DLH | 9 hr |
| Jun 28, 7:27 PM CDT | Dense Fog Advisory | DLH | 13 hr |
| Jul 3, 1:58 PM CDT | Severe Thunderstorm Warning | DLH | 24 min |
| Jul 3, 3:07 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Jul 9, 7:46 PM CDT | Severe Thunderstorm Warning | DLH | 44 min |
| Jul 9, 8:30 PM CDT | Severe Thunderstorm Warning | DLH | 15 min |
| Jul 14, 6:37 PM CDT | Special Weather Statement | DLH | 8 min |
| Jul 25, 8:34 PM CDT | Severe Thunderstorm Warning | DLH | 41 min |
| Jul 25, 9:14 PM CDT | Special Weather Statement | DLH | 16 min |
| Jul 25, 9:27 PM CDT | Special Weather Statement | DLH | 33 min |
| Jul 25, 10:00 PM CDT | Special Weather Statement | DLH | 30 min |
| Jul 25, 10:20 PM CDT | Areal Flood Advisory | DLH | 3 hr |
| Jul 25, 10:49 PM CDT | Special Weather Statement | DLH | 11 min |
| Jul 25, 11:34 PM CDT | Special Weather Statement | DLH | 26 min |
| Jul 26, 12:49 AM CDT | Areal Flood Advisory | DLH | 3 hr |
| Jul 26, 4:25 AM CDT | Special Weather Statement | DLH | 35 min |
| Jul 26, 5:14 AM CDT | Special Weather Statement | DLH | 31 min |
| Jul 27, 4:46 AM CDT | Special Weather Statement | DLH | 14 min |
| Aug 8, 1:50 PM CDT | Special Weather Statement | DLH | 25 min |
| Aug 8, 5:19 PM CDT | Areal Flood Advisory | DLH | 3 hr |
| Aug 8, 8:32 PM CDT | Special Weather Statement | DLH | 28 min |
| Aug 11, 2:16 PM CDT | Dense Fog Advisory | DLH | 19 hr |
| Aug 16, 3:39 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 16, 5:55 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 23, 2:42 AM CDT | Dense Fog Advisory | DLH | 7 hr |
| Aug 23, 11:09 PM CDT | Dense Fog Advisory | DLH | 11 hr |
| Aug 25, 4:32 AM CDT | Special Weather Statement | DLH | 28 min |
| Aug 25, 10:36 AM CDT | Special Weather Statement | DLH | 24 min |
| Aug 25, 11:03 AM CDT | Special Weather Statement | DLH | 27 min |
| Aug 27, 1:27 AM CDT | Dense Fog Advisory | DLH | 6 hr |
| Aug 28, 7:06 PM CDT | Special Weather Statement | DLH | 24 min |
| Aug 28, 7:29 PM CDT | Special Weather Statement | DLH | 46 min |
| Sep 5, 3:16 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Sep 5, 3:53 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 5, 5:53 PM CDT | Special Weather Statement | DLH | 67 min |
| Sep 5, 6:26 PM CDT | Severe Thunderstorm Warning | DLH | 49 min |
| Sep 12, 2:51 AM CDT | Frost Advisory | DLH | 29 hr |
| Sep 13, 1:54 PM CDT | Frost Advisory | DLH | 17 hr |
| Sep 17, 5:09 AM CDT | Dense Fog Advisory | DLH | 6 hr |
| Sep 21, 2:11 PM CDT | Special Weather Statement | DLH | 34 min |
| Sep 21, 2:22 PM CDT | Special Weather Statement | DLH | 23 min |
| Sep 22, 2:31 PM CDT | Special Weather Statement | DLH | 44 min |
| Oct 6, 2:37 AM CDT | Wind Advisory | DLH | 14 hr |
| Oct 6, 8:55 PM CDT | Frost Advisory | DLH | 12 hr |
| Oct 7, 2:00 PM CDT | Freeze Watch | DLH | 24 hr |
| Oct 8, 2:06 PM CDT | Freeze Warning | DLH | 19 hr |
| Oct 9, 2:38 PM CDT | Freeze Warning | DLH | 18 hr |
| Nov 6, 2:17 PM CST | Winter Weather Advisory | DLH | 43 hr |
| Nov 7, 10:25 PM CST | Winter Storm Warning | DLH | 11 hr |
| Nov 16, 2:42 AM CST | Wind Advisory | DLH | 19 hr |
| Nov 16, 7:07 PM CST | High Wind Warning | DLH | 3 hr |
| Dec 22, 3:03 PM CST | Dense Fog Advisory | DLH | 42 hr |
| Dec 24, 2:39 PM CST | Winter Weather Advisory | DLH | 61 hr |
| Dec 30, 7:41 AM CST | Winter Weather Advisory | DLH | 16 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 | 5 |
| Severe Thunderstorm Watch | 2 |
| Mesoscale Discussion | 4 |
| Special Weather Statement | 24 |
| Flooding | |
| Flood Watch | 1 |
| Areal Flood Advisory | 6 |
| Winter | |
| Blizzard Warning | 1 |
| Winter Storm Warning | 9 |
| Winter Storm Watch | 7 |
| Winter Weather Advisory | 19 |
| Cold | |
| Freeze Warning | 2 |
| Wind Chill Warning | 1 |
| Freeze Watch | 1 |
| Wind Chill Watch | 1 |
| Frost Advisory | 6 |
| Wind Chill Advisory | 11 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 5 |
| Fire | |
| Red Flag Warning | 2 |
| Fire Weather Watch | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 7 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20222024
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.