Alert archive / Minnesota / Mille Lacs County
Weather alerts in Mille Lacs County, Minnesota, 2021
90 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Mille Lacs County and its neighbors
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Alerts
- 90
- Warnings
- 18
- Watches
- 13
- Advisories
- 37
- Busiest month
- December15 alerts
- Busiest day
- September 17, 20218 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 3 tornado warnings covering Mille Lacs County in 2021 had a tornado report inside them.
Mille Lacs County, 2021
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 5 | 3 | 40% | 6 | 67% | 34 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2021
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Twin Cities, MN: tornado warnings | 27 | 7 | 74% | 33 | 36% | 11 min |
| NWS Twin Cities, MN: severe thunderstorm warnings | 144 | 77 | 47% | 283 | 69% | 20 min |
| NWS Twin Cities, MN: flash flood warnings | 5 | 1 | 80% | 1 | 100% | 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, 6:00 PM CST | Dense Fog Advisory | MPX | 18 hr |
| Jan 3, 2:47 PM CST | Dense Fog Advisory | MPX | 21 hr |
| Jan 4, 8:44 PM CST | Dense Fog Advisory | MPX | 13 hr |
| Jan 5, 1:55 PM CST | Dense Fog Advisory | MPX | 19 hr |
| Jan 7, 10:14 AM CST | Dense Fog Advisory | MPX | 25 hr |
| Jan 8, 2:18 PM CST | Dense Fog Advisory | MPX | 22 hr |
| Jan 13, 10:37 AM CST | Winter Storm Watch | MPX | 17 hr |
| Jan 13, 10:37 AM CST | Winter Weather Advisory | MPX | 17 hr |
| Jan 14, 3:37 AM CST | Winter Weather Advisory | MPX | 38 hr |
| Jan 29, 2:52 PM CST | Winter Weather Advisory | MPX | 39 hr |
| Feb 3, 2:49 PM CST | Winter Weather Advisory | MPX | 30 hr |
| Feb 5, 3:16 AM CST | Wind Chill Advisory | MPX | 5 days |
| Feb 7, 2:24 PM CST | Wind Chill Advisory | MPX | 20 hr |
| Feb 8, 1:32 PM CST | Wind Chill Advisory | MPX | 20 hr |
| Feb 9, 1:57 PM CST | Wind Chill Advisory | MPX | 20 hr |
| Feb 10, 2:05 PM CST | Wind Chill Advisory | MPX | 19 hr |
| Feb 11, 2:09 PM CST | Wind Chill Advisory | MPX | 52 hr |
| Feb 12, 2:20 PM CST | Wind Chill Watch | MPX | 38 hr |
| Feb 13, 3:43 AM CST | Wind Chill Warning | MPX | 56 hr |
| Feb 14, 3:51 AM CST | Wind Chill Advisory | MPX | 14 hr |
| Feb 14, 2:31 PM CST | Wind Chill Warning | MPX | 19 hr |
| Feb 15, 2:55 AM CST | Wind Chill Advisory | MPX | 30 hr |
| Feb 27, 3:54 AM CST | Winter Weather Advisory | MPX | 32 hr |
| Feb 28, 6:21 AM CST | Winter Storm Warning | MPX | 6 hr |
| Mar 28, 2:37 PM CDT | Wind Advisory | MPX | 30 hr |
| Apr 2, 11:06 AM CDT | Red Flag Warning | MPX | 9 hr |
| Apr 5, 9:48 PM CDT | Severe Thunderstorm Warning | MPX | 31 min |
| May 1, 9:27 AM CDT | Red Flag Warning | MPX | 12 hr |
| May 5, 2:40 PM CDT | Fire Weather Watch | MPX | 13 hr |
| May 6, 3:13 AM CDT | Red Flag Warning | MPX | 17 hr |
| May 6, 3:21 PM CDT | Frost Advisory | MPX | 17 hr |
| May 27, 4:09 AM CDT | Freeze Watch | MPX | 16 hr |
| May 27, 2:45 PM CDT | Freeze Warning | MPX | 16 hr |
| May 28, 10:14 AM CDT | Frost Advisory | MPX | 21 hr |
| May 30, 3:37 PM CDT | Mesoscale Discussion | SPC | 113 min |
| May 30, 9:16 PM CDT | Special Weather Statement | MPX | 44 min |
| Jun 4, 1:23 PM CDT | Heat Advisory | MPX | 6 days |
| Jun 6, 5:57 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jun 10, 2:22 PM CDT | Special Weather Statement | MPX | 23 min |
| Jun 17, 3:54 PM CDT | Fire Weather Watch | MPX | 11 hr |
| Jun 18, 3:21 AM CDT | Red Flag Warning | MPX | 16 hr |
| Jul 23, 11:22 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 24, 2:16 AM CDT | Special Weather Statement | MPX | 44 min |
| Jul 26, 5:00 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 26, 5:22 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 26, 7:12 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jul 27, 3:59 AM CDT | Special Weather Statement | MPX | 46 min |
| Jul 27, 4:00 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 27, 3:36 PM CDT | Heat Advisory | MPX | 29 hr |
| Jul 28, 5:09 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 28, 7:17 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 15, 10:06 AM CDT | Fire Weather Watch | MPX | 8 hr |
| Aug 24, 1:10 AM CDT | Mesoscale Discussion | SPC | 95 min |
| Aug 24, 2:17 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 24, 3:00 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 28, 9:39 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 28, 10:34 AM CDT | Tornado Watch | SPC | 4 hr |
| Aug 28, 11:45 AM CDT | Severe Thunderstorm Warning | MPX | 45 min |
| Aug 28, 12:04 PM CDT | Tornado Warning | MPX | 41 min |
| Aug 28, 12:27 PM CDT | Severe Thunderstorm Warning | MPX | 48 min |
| Sep 16, 3:47 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Sep 16, 5:57 PM CDT | Tornado Watch | SPC | 4 hr |
| Sep 16, 6:32 PM CDT | Tornado Warning | MPX | 43 min |
| Sep 16, 7:07 PM CDT | Tornado Warning | MPX | 23 min |
| Sep 16, 7:30 PM CDT | Severe Thunderstorm Warning | MPX | 45 min |
| Sep 16, 7:43 PM CDT | Special Weather Statement | MPX | 47 min |
| Sep 16, 7:53 PM CDT | Severe Thunderstorm Warning | MPX | 37 min |
| Sep 16, 8:53 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 17, 12:09 AM CDT | Special Weather Statement | MPX | 36 min |
| Sep 17, 12:47 AM CDT | Special Weather Statement | MPX | 28 min |
| Sep 17, 1:48 AM CDT | Special Weather Statement | MPX | 27 min |
| Oct 3, 2:49 PM CDT | Dense Fog Advisory | MPX | 20 hr |
| Oct 4, 2:43 PM CDT | Dense Fog Advisory | MPX | 19 hr |
| Oct 15, 11:56 AM CDT | Frost Advisory | MPX | 21 hr |
| Nov 13, 1:13 PM CST | Winter Weather Advisory | MPX | 14 hr |
| Dec 4, 2:27 PM CST | Winter Weather Advisory | MPX | 19 hr |
| Dec 5, 3:12 AM CST | Wind Advisory | MPX | 30 hr |
| Dec 14, 3:27 AM CST | Wind Advisory | MPX | 24 hr |
| Dec 14, 4:06 PM CST | High Wind Warning | MPX | 38 hr |
| Dec 15, 3:28 AM CST | Winter Weather Advisory | MPX | 31 hr |
| Dec 15, 3:34 AM CST | Dense Fog Advisory | MPX | 11 hr |
| Dec 20, 2:33 PM CST | Winter Weather Advisory | MPX | 21 hr |
| Dec 25, 3:11 AM CST | Winter Storm Watch | MPX | 24 hr |
| Dec 26, 3:24 AM CST | Winter Storm Warning | MPX | 29 hr |
| Dec 26, 3:24 AM CST | Winter Weather Advisory | MPX | 36 hr |
| Dec 26, 4:44 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 26, 5:26 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Dec 26, 9:07 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 27, 2:57 PM CST | Winter Weather Advisory | MPX | 32 hr |
| Dec 28, 3:20 PM CST | Wind Chill Advisory | MPX | 19 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20202022
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.