Alert archive / Minnesota / Big Stone County

Weather alerts in Big Stone County, Minnesota, 2020

110 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Big Stone County and its neighbors

Each county as a circle sized by its count in 2020. Tap one for its archive.

Alerts
110
Warnings
20
Watches
14
Advisories
39
Busiest month
July20 alerts
Busiest day
July 9, 20206 alerts

Over time

By month

Warning verification

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

Big Stone County, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings9544%786%10 min
Flash flood warnings00

Each office's whole area, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Aberdeen, SD: tornado warnings11373%1619%6 min
NWS Aberdeen, SD: severe thunderstorm warnings26216039%35678%19 min
NWS Aberdeen, SD: flash flood warnings4175%1100%205 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 4, 1:29 PM CSTWind AdvisoryABR23 hr
Jan 10, 2:25 PM CSTWind Chill AdvisoryABR22 hr
Jan 15, 3:54 AM CSTWind Chill AdvisoryABR32 hr
Jan 15, 2:34 PM CSTWinter Storm WatchABR37 hr
Jan 16, 1:35 PM CSTWinter Storm WarningABR34 hr
Jan 17, 3:48 AM CSTBlizzard WarningABR38 hr
Jan 17, 6:32 AM CSTMesoscale DiscussionSPC5 hr
Jan 18, 3:38 AM CSTWind Chill AdvisoryABR32 hr
Jan 22, 3:21 PM CSTDense Fog AdvisoryABR12 hr
Jan 26, 1:16 PM CSTWinter Weather AdvisoryABR11 hr
Jan 30, 12:06 PM CSTDense Fog AdvisoryABR21 hr
Jan 31, 9:04 AM CSTDense Fog AdvisoryABR3 hr
Feb 8, 3:24 AM CSTWinter Weather AdvisoryABR26 hr
Feb 11, 2:38 PM CSTBlizzard WarningABR21 hr
Feb 11, 2:38 PM CSTWind Chill WarningABR43 hr
Feb 11, 2:38 PM CSTWinter Weather AdvisoryABR27 hr
Feb 13, 9:38 AM CSTWind Chill AdvisoryABR2 hr
Feb 13, 2:51 PM CSTWind Chill AdvisoryABR16 hr
Feb 19, 2:19 PM CSTWind Chill AdvisoryABR19 hr
Mar 1, 7:32 AM CSTWind AdvisoryABR10 hr
Mar 4, 2:44 PM CSTWind AdvisoryABR27 hr
Mar 19, 3:22 AM CDTWind AdvisoryABR21 hr
Apr 1, 4:00 AM CDTWinter Storm WatchABR11 hr
Apr 1, 4:00 AM CDTWinter Weather AdvisoryABR51 hr
Apr 1, 2:44 PM CDTWinter Storm WarningABR24 hr
Apr 6, 7:53 PM CDTMesoscale DiscussionSPC3 hr
Apr 6, 11:01 PM CDTSevere Thunderstorm WarningABR29 min
Apr 8, 3:14 AM CDTWind AdvisoryABR17 hr
Apr 19, 3:17 PM CDTFire Weather WatchABR12 hr
Apr 20, 3:33 AM CDTRed Flag WarningABR14 hr
Apr 20, 3:34 AM CDTWind AdvisoryABR15 hr
May 1, 1:31 PM CDTFire Weather WatchABR14 hr
May 2, 3:08 AM CDTRed Flag WarningABR16 hr
Jun 2, 7:42 AM CDTMesoscale DiscussionSPC93 min
Jun 2, 10:24 AM CDTSpecial Weather StatementABR51 min
Jun 2, 1:27 PM CDTMesoscale DiscussionSPC93 min
Jun 8, 5:56 PM CDTSevere Thunderstorm WatchSPC9 hr
Jun 8, 9:13 PM CDTMesoscale DiscussionSPC2 hr
Jun 9, 12:46 AM CDTMesoscale DiscussionSPC89 min
Jun 14, 3:21 AM CDTWind AdvisoryABR16 hr
Jun 16, 3:16 AM CDTWind AdvisoryABR18 hr
Jun 28, 3:41 PM CDTHeat AdvisoryABR28 hr
Jul 1, 2:17 AM CDTSpecial Weather StatementABR43 min
Jul 8, 4:10 AM CDTMesoscale DiscussionSPC2 hr
Jul 8, 3:03 PM CDTMesoscale DiscussionSPC117 min
Jul 8, 4:15 PM CDTSevere Thunderstorm WatchSPC8 hr
Jul 8, 6:17 PM CDTMesoscale DiscussionSPC118 min
Jul 8, 7:58 PM CDTMesoscale DiscussionSPC2 hr
Jul 8, 9:27 PM CDTSpecial Weather StatementABR33 min
Jul 8, 9:51 PM CDTMesoscale DiscussionSPC114 min
Jul 8, 9:56 PM CDTSevere Thunderstorm WarningABR49 min
Jul 8, 10:30 PM CDTSevere Thunderstorm WarningABR45 min
Jul 8, 11:21 PM CDTSevere Thunderstorm WarningABR14 min
Jul 17, 5:09 PM CDTMesoscale DiscussionSPC2 hr
Jul 17, 5:39 PM CDTSevere Thunderstorm Watch PDSSPC8 hr
Jul 17, 7:57 PM CDTMesoscale DiscussionSPC2 hr
Jul 17, 10:25 PM CDTMesoscale DiscussionSPC2 hr
Jul 17, 11:36 PM CDTMesoscale DiscussionSPC114 min
Jul 17, 11:52 PM CDTSevere Thunderstorm WarningABR38 min
Jul 18, 12:36 AM CDTSpecial Weather StatementABR54 min
Jul 23, 3:03 AM CDTHeat AdvisoryABR65 hr
Jul 26, 2:02 AM CDTMesoscale DiscussionSPC88 min
Aug 7, 3:52 PM CDTSevere Thunderstorm WatchSPC9 hr
Aug 8, 12:06 PM CDTMesoscale DiscussionSPC114 min
Aug 9, 5:09 PM CDTMesoscale DiscussionSPC96 min
Aug 12, 4:38 AM CDTSpecial Weather StatementABR67 min
Aug 12, 5:01 AM CDTSevere Thunderstorm WarningABR44 min
Aug 13, 3:11 AM CDTHeat AdvisoryABR16 hr
Aug 14, 1:57 PM CDTMesoscale DiscussionSPC2 hr
Aug 14, 2:36 PM CDTTornado WatchSPC5 hr
Aug 14, 4:53 PM CDTMesoscale DiscussionSPC97 min
Aug 21, 5:02 PM CDTMesoscale DiscussionSPC58 min
Aug 21, 5:45 PM CDTSevere Thunderstorm WarningABR45 min
Aug 21, 6:20 PM CDTSpecial Weather StatementABR40 min
Aug 23, 5:10 PM CDTMesoscale DiscussionSPC95 min
Aug 24, 1:17 AM CDTMesoscale DiscussionSPC118 min
Aug 24, 4:57 AM CDTSpecial Weather StatementABR48 min
Aug 24, 4:00 PM CDTMesoscale DiscussionSPC90 min
Aug 28, 1:28 AM CDTMesoscale DiscussionSPC92 min
Aug 30, 4:55 PM CDTSevere Thunderstorm WatchSPC5 hr
Aug 30, 8:00 PM CDTMesoscale DiscussionSPC2 hr
Sep 2, 3:24 AM CDTWind AdvisoryABR24 hr
Sep 8, 3:29 PM CDTFrost AdvisoryABR18 hr
Sep 9, 12:52 PM CDTFrost AdvisoryABR20 hr
Oct 1, 3:10 AM CDTFrost AdvisoryABR29 hr
Oct 3, 2:21 PM CDTFrost AdvisoryABR19 hr
Oct 6, 3:20 AM CDTRed Flag WarningABR16 hr
Oct 11, 3:52 PM CDTMesoscale DiscussionSPC83 min
Oct 11, 4:54 PM CDTSevere Thunderstorm WatchSPC8 hr
Oct 11, 5:07 PM CDTSevere Thunderstorm WarningABR23 min
Oct 11, 5:39 PM CDTSevere Thunderstorm WarningABR51 min
Oct 11, 6:50 PM CDTMesoscale DiscussionSPC115 min
Oct 13, 3:52 PM CDTWind AdvisoryABR27 hr
Oct 19, 3:24 PM CDTWinter Weather AdvisoryABR28 hr
Oct 20, 4:13 PM CDTWinter Storm WatchABR23 hr
Oct 21, 3:08 PM CDTWinter Storm WarningABR30 hr
Oct 30, 1:47 PM CDTWind AdvisoryABR30 hr
Nov 5, 4:12 PM CSTFire Weather WatchABR10 hr
Nov 6, 2:24 AM CSTRed Flag WarningABR16 hr
Nov 7, 1:21 PM CSTWind AdvisoryABR29 hr
Nov 9, 8:14 AM CSTWinter Weather AdvisoryABR2 hr
Nov 10, 9:42 AM CSTMesoscale DiscussionSPC6 hr
Dec 6, 5:13 AM CSTDense Fog AdvisoryABR7 hr
Dec 7, 9:30 AM CSTDense Fog AdvisoryABR3 hr
Dec 21, 5:23 AM CSTWind AdvisoryABR9 hr
Dec 22, 3:58 AM CSTWinter Storm WatchABR10 hr
Dec 22, 2:23 PM CSTBlizzard WarningABR31 hr
Dec 23, 7:42 AM CSTMesoscale DiscussionSPC5 hr
Dec 23, 2:38 PM CSTWind Chill AdvisoryABR21 hr
Dec 28, 3:56 AM CSTWinter Weather AdvisoryABR44 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 archive20192021

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.