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

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings30100%0
Severe thunderstorm warnings5340%667%34 min
Flash flood warnings00

Each office's whole area, 2021

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Twin Cities, MN: tornado warnings27774%3336%11 min
NWS Twin Cities, MN: severe thunderstorm warnings1447747%28369%20 min
NWS Twin Cities, MN: flash flood warnings5180%1100%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.

IssuedProductOfficeLasted
Jan 1, 6:00 PM CSTDense Fog AdvisoryMPX18 hr
Jan 3, 2:47 PM CSTDense Fog AdvisoryMPX21 hr
Jan 4, 8:44 PM CSTDense Fog AdvisoryMPX13 hr
Jan 5, 1:55 PM CSTDense Fog AdvisoryMPX19 hr
Jan 7, 10:14 AM CSTDense Fog AdvisoryMPX25 hr
Jan 8, 2:18 PM CSTDense Fog AdvisoryMPX22 hr
Jan 13, 10:37 AM CSTWinter Storm WatchMPX17 hr
Jan 13, 10:37 AM CSTWinter Weather AdvisoryMPX17 hr
Jan 14, 3:37 AM CSTWinter Weather AdvisoryMPX38 hr
Jan 29, 2:52 PM CSTWinter Weather AdvisoryMPX39 hr
Feb 3, 2:49 PM CSTWinter Weather AdvisoryMPX30 hr
Feb 5, 3:16 AM CSTWind Chill AdvisoryMPX5 days
Feb 7, 2:24 PM CSTWind Chill AdvisoryMPX20 hr
Feb 8, 1:32 PM CSTWind Chill AdvisoryMPX20 hr
Feb 9, 1:57 PM CSTWind Chill AdvisoryMPX20 hr
Feb 10, 2:05 PM CSTWind Chill AdvisoryMPX19 hr
Feb 11, 2:09 PM CSTWind Chill AdvisoryMPX52 hr
Feb 12, 2:20 PM CSTWind Chill WatchMPX38 hr
Feb 13, 3:43 AM CSTWind Chill WarningMPX56 hr
Feb 14, 3:51 AM CSTWind Chill AdvisoryMPX14 hr
Feb 14, 2:31 PM CSTWind Chill WarningMPX19 hr
Feb 15, 2:55 AM CSTWind Chill AdvisoryMPX30 hr
Feb 27, 3:54 AM CSTWinter Weather AdvisoryMPX32 hr
Feb 28, 6:21 AM CSTWinter Storm WarningMPX6 hr
Mar 28, 2:37 PM CDTWind AdvisoryMPX30 hr
Apr 2, 11:06 AM CDTRed Flag WarningMPX9 hr
Apr 5, 9:48 PM CDTSevere Thunderstorm WarningMPX31 min
May 1, 9:27 AM CDTRed Flag WarningMPX12 hr
May 5, 2:40 PM CDTFire Weather WatchMPX13 hr
May 6, 3:13 AM CDTRed Flag WarningMPX17 hr
May 6, 3:21 PM CDTFrost AdvisoryMPX17 hr
May 27, 4:09 AM CDTFreeze WatchMPX16 hr
May 27, 2:45 PM CDTFreeze WarningMPX16 hr
May 28, 10:14 AM CDTFrost AdvisoryMPX21 hr
May 30, 3:37 PM CDTMesoscale DiscussionSPC113 min
May 30, 9:16 PM CDTSpecial Weather StatementMPX44 min
Jun 4, 1:23 PM CDTHeat AdvisoryMPX6 days
Jun 6, 5:57 PM CDTMesoscale DiscussionSPC93 min
Jun 10, 2:22 PM CDTSpecial Weather StatementMPX23 min
Jun 17, 3:54 PM CDTFire Weather WatchMPX11 hr
Jun 18, 3:21 AM CDTRed Flag WarningMPX16 hr
Jul 23, 11:22 PM CDTSevere Thunderstorm WatchSPC4 hr
Jul 24, 2:16 AM CDTSpecial Weather StatementMPX44 min
Jul 26, 5:00 PM CDTMesoscale DiscussionSPC2 hr
Jul 26, 5:22 PM CDTSevere Thunderstorm WatchSPC5 hr
Jul 26, 7:12 PM CDTMesoscale DiscussionSPC93 min
Jul 27, 3:59 AM CDTSpecial Weather StatementMPX46 min
Jul 27, 4:00 AM CDTMesoscale DiscussionSPC3 hr
Jul 27, 3:36 PM CDTHeat AdvisoryMPX29 hr
Jul 28, 5:09 PM CDTMesoscale DiscussionSPC2 hr
Jul 28, 7:17 PM CDTSevere Thunderstorm Watch PDSSPC7 hr
Aug 15, 10:06 AM CDTFire Weather WatchMPX8 hr
Aug 24, 1:10 AM CDTMesoscale DiscussionSPC95 min
Aug 24, 2:17 AM CDTSevere Thunderstorm WatchSPC7 hr
Aug 24, 3:00 AM CDTMesoscale DiscussionSPC2 hr
Aug 28, 9:39 AM CDTMesoscale DiscussionSPC2 hr
Aug 28, 10:34 AM CDTTornado WatchSPC4 hr
Aug 28, 11:45 AM CDTSevere Thunderstorm Warning Considerable damage threatMPX45 min
Aug 28, 12:04 PM CDTTornado WarningMPX41 min
Aug 28, 12:27 PM CDTSevere Thunderstorm Warning Considerable damage threatMPX48 min
Sep 16, 3:47 PM CDTMesoscale DiscussionSPC118 min
Sep 16, 5:57 PM CDTTornado WatchSPC4 hr
Sep 16, 6:32 PM CDTTornado WarningMPX43 min
Sep 16, 7:07 PM CDTTornado WarningMPX23 min
Sep 16, 7:30 PM CDTSevere Thunderstorm WarningMPX45 min
Sep 16, 7:43 PM CDTSpecial Weather StatementMPX47 min
Sep 16, 7:53 PM CDTSevere Thunderstorm WarningMPX37 min
Sep 16, 8:53 PM CDTMesoscale DiscussionSPC2 hr
Sep 17, 12:09 AM CDTSpecial Weather StatementMPX36 min
Sep 17, 12:47 AM CDTSpecial Weather StatementMPX28 min
Sep 17, 1:48 AM CDTSpecial Weather StatementMPX27 min
Oct 3, 2:49 PM CDTDense Fog AdvisoryMPX20 hr
Oct 4, 2:43 PM CDTDense Fog AdvisoryMPX19 hr
Oct 15, 11:56 AM CDTFrost AdvisoryMPX21 hr
Nov 13, 1:13 PM CSTWinter Weather AdvisoryMPX14 hr
Dec 4, 2:27 PM CSTWinter Weather AdvisoryMPX19 hr
Dec 5, 3:12 AM CSTWind AdvisoryMPX30 hr
Dec 14, 3:27 AM CSTWind AdvisoryMPX24 hr
Dec 14, 4:06 PM CSTHigh Wind WarningMPX38 hr
Dec 15, 3:28 AM CSTWinter Weather AdvisoryMPX31 hr
Dec 15, 3:34 AM CSTDense Fog AdvisoryMPX11 hr
Dec 20, 2:33 PM CSTWinter Weather AdvisoryMPX21 hr
Dec 25, 3:11 AM CSTWinter Storm WatchMPX24 hr
Dec 26, 3:24 AM CSTWinter Storm WarningMPX29 hr
Dec 26, 3:24 AM CSTWinter Weather AdvisoryMPX36 hr
Dec 26, 4:44 PM CSTMesoscale DiscussionSPC4 hr
Dec 26, 5:26 PM CSTMesoscale DiscussionSPC6 hr
Dec 26, 9:07 PM CSTMesoscale DiscussionSPC4 hr
Dec 27, 2:57 PM CSTWinter Weather AdvisoryMPX32 hr
Dec 28, 3:20 PM CSTWind Chill AdvisoryMPX19 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.