Alert archive / Minnesota / Nicollet County

Weather alerts in Nicollet County, Minnesota, 2018

113 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Nicollet County and its neighbors

Each county as a circle sized by its count in 2018. Tap one for its archive.

Alerts
113
Warnings
22
Watches
22
Advisories
35
Busiest month
May16 alerts
Busiest day
May 29, 20185 alerts

Over time

By month

Warning verification

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

Nicollet County, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings4250%1100%19 min
Flash flood warnings10100%0

Each office's whole area, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Twin Cities, MN: tornado warnings12742%3077%16 min
NWS Twin Cities, MN: severe thunderstorm warnings1597354%31166%21 min
NWS Twin Cities, MN: flash flood warnings8188%1030%87 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, 10:54 AM CSTWind Chill AdvisoryMPX23 hr
Jan 5, 2:32 PM CSTWind Chill AdvisoryMPX19 hr
Jan 9, 3:29 AM CSTWinter Storm WatchMPX35 hr
Jan 10, 3:22 AM CSTWinter Weather AdvisoryMPX39 hr
Jan 11, 12:02 PM CSTWind Chill AdvisoryMPX22 hr
Jan 12, 2:58 PM CSTWind Chill AdvisoryMPX18 hr
Jan 14, 3:41 AM CSTWind Chill WarningMPX53 hr
Jan 14, 3:41 AM CSTWind Chill AdvisoryMPX53 hr
Jan 14, 2:26 PM CSTWinter Weather AdvisoryMPX24 hr
Jan 19, 4:04 AM CSTWinter Storm WatchMPX59 hr
Jan 20, 3:48 PM CSTWinter Storm WarningMPX56 hr
Jan 21, 3:56 AM CSTBlizzard WarningMPX44 hr
Jan 22, 9:20 AM CSTMesoscale DiscussionSPC6 hr
Feb 3, 2:57 AM CSTWind Chill AdvisoryMPX33 hr
Feb 18, 4:04 AM CSTWinter Weather AdvisoryMPX56 hr
Feb 21, 2:59 PM CSTWinter Weather AdvisoryMPX41 hr
Feb 22, 2:24 PM CSTWinter Storm WatchMPX24 hr
Feb 23, 2:16 PM CSTWinter Storm WarningMPX37 hr
Feb 23, 9:05 PM CSTDense Fog AdvisoryMPX12 hr
Mar 4, 3:10 PM CSTWinter Storm WarningMPX36 hr
Mar 4, 3:10 PM CSTWinter Weather AdvisoryMPX36 hr
Mar 21, 3:50 PM CDTWinter Storm WatchMPX36 hr
Mar 22, 3:55 PM CDTWinter Storm WarningMPX45 hr
Mar 23, 8:02 PM CDTMesoscale DiscussionSPC6 hr
Mar 30, 4:05 PM CDTWind AdvisoryMPX21 hr
Apr 2, 4:00 AM CDTWinter Storm WatchMPX10 hr
Apr 2, 9:46 AM CDTWinter Weather AdvisoryMPX39 hr
Apr 2, 11:14 AM CDTWinter Storm WarningMPX38 hr
Apr 6, 3:23 PM CDTWinter Storm WatchMPX23 hr
Apr 7, 2:43 PM CDTWinter Weather AdvisoryMPX37 hr
Apr 11, 3:44 PM CDTWinter Storm WatchMPX47 hr
Apr 12, 3:41 PM CDTBlizzard WarningMPX60 hr
Apr 12, 9:34 PM CDTWinter Storm WarningMPX3 days
Apr 13, 8:44 AM CDTMesoscale DiscussionSPC3 hr
Apr 13, 3:12 PM CDTWinter Weather AdvisoryMPX57 hr
Apr 14, 10:06 AM CDTMesoscale DiscussionSPC6 hr
Apr 14, 6:02 PM CDTMesoscale DiscussionSPC6 hr
Apr 17, 3:18 AM CDTWinter Weather AdvisoryMPX40 hr
Apr 23, 10:41 AM CDTRiver Flood WarningMPX4 days
Apr 29, 3:42 AM CDTRed Flag WarningMPX17 hr
May 3, 3:17 PM CDTFire Weather WatchMPX13 hr
May 4, 3:50 AM CDTRed Flag WarningMPX15 hr
May 15, 1:40 AM CDTDense Fog AdvisoryMPX7 hr
May 22, 2:03 AM CDTDense Fog AdvisoryMPX7 hr
May 25, 5:20 PM CDTMesoscale DiscussionSPC115 min
May 25, 6:29 PM CDTMesoscale DiscussionSPC2 hr
May 26, 2:24 PM CDTHeat AdvisoryMPX47 hr
May 27, 3:52 PM CDTHeat AdvisoryMPX27 hr
May 28, 3:54 PM CDTSpecial Weather StatementMPX36 min
May 28, 4:10 PM CDTSpecial Weather StatementMPX35 min
May 29, 1:22 PM CDTMesoscale DiscussionSPC83 min
May 29, 1:43 PM CDTSevere Thunderstorm WatchSPC6 hr
May 29, 3:24 PM CDTSpecial Weather StatementMPX96 min
May 29, 3:54 PM CDTMesoscale DiscussionSPC96 min
May 29, 6:27 PM CDTSpecial Weather StatementMPX33 min
May 31, 1:00 AM CDTDense Fog AdvisoryMPX8 hr
Jun 6, 4:34 AM CDTSevere Thunderstorm WarningMPX41 min
Jun 9, 10:42 AM CDTSpecial Weather StatementMPX48 min
Jun 9, 10:54 AM CDTFlash Flood WatchMPX8 hr
Jun 15, 11:18 AM CDTHeat AdvisoryMPX56 hr
Jun 17, 3:52 PM CDTMesoscale DiscussionSPC53 min
Jun 21, 10:09 AM CDTRiver Flood WarningMPX8 days
Jun 24, 10:45 AM CDTSpecial Weather StatementMPX45 min
Jun 26, 2:12 PM CDTAreal Flood WarningMPX4 days
Jun 28, 2:24 AM CDTExcessive Heat WatchMPX20 hr
Jun 28, 2:46 PM CDTExcessive Heat WarningMPX31 hr
Jul 3, 3:25 AM CDTExcessive Heat WatchMPX24 hr
Jul 3, 7:47 AM CDTFlash Flood WarningMPX3 hr
Jul 4, 3:35 AM CDTHeat AdvisoryMPX11 hr
Jul 5, 8:07 PM CDTRiver Flood WarningMPX3 days
Jul 10, 4:02 AM CDTExcessive Heat WatchMPX11 hr
Jul 10, 3:03 PM CDTHeat AdvisoryMPX52 hr
Jul 12, 2:42 PM CDTFlash Flood WatchMPX16 hr
Jul 12, 4:47 PM CDTMesoscale DiscussionSPC88 min
Jul 12, 5:04 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 12, 7:35 PM CDTMesoscale DiscussionSPC85 min
Jul 14, 3:04 AM CDTDense Fog AdvisoryMPX5 hr
Jul 19, 1:27 PM CDTMesoscale DiscussionSPC63 min
Jul 19, 6:24 PM CDTSpecial Weather StatementMPX66 min
Jul 25, 3:47 PM CDTMesoscale DiscussionSPC88 min
Jul 25, 4:05 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 25, 6:29 PM CDTMesoscale DiscussionSPC91 min
Aug 6, 7:53 PM CDTSpecial Weather StatementMPX52 min
Aug 24, 3:07 PM CDTMesoscale DiscussionSPC113 min
Aug 25, 2:54 AM CDTDense Fog AdvisoryMPX7 hr
Aug 27, 11:49 AM CDTMesoscale DiscussionSPC116 min
Aug 27, 2:24 PM CDTMesoscale DiscussionSPC96 min
Aug 27, 2:57 PM CDTSevere Thunderstorm WatchSPC7 hr
Aug 27, 3:52 PM CDTSevere Thunderstorm WarningMPX53 min
Aug 27, 4:14 PM CDTSevere Thunderstorm WarningMPX61 min
Sep 4, 3:15 AM CDTFlash Flood WatchMPX25 hr
Sep 17, 12:54 PM CDTSpecial Weather StatementMPX51 min
Sep 17, 4:03 PM CDTSevere Thunderstorm WarningMPX27 min
Sep 18, 5:48 AM CDTMesoscale DiscussionSPC2 hr
Sep 18, 7:31 AM CDTSpecial Weather StatementMPX29 min
Sep 19, 10:39 AM CDTFlash Flood WatchMPX17 hr
Sep 20, 12:13 PM CDTSpecial Weather StatementMPX32 min
Sep 20, 2:15 PM CDTMesoscale DiscussionSPC3 hr
Sep 20, 3:33 PM CDTTornado WatchSPC4 hr
Sep 20, 5:29 PM CDTMesoscale DiscussionSPC2 hr
Sep 20, 5:51 PM CDTSpecial Weather StatementMPX24 min
Sep 28, 3:21 AM CDTFrost AdvisoryMPX30 hr
Oct 3, 12:12 PM CDTWind AdvisoryMPX12 hr
Oct 7, 3:21 PM CDTFlood WatchMPX60 hr
Oct 11, 3:05 AM CDTFreeze WarningMPX30 hr
Oct 27, 2:06 PM CDTWind AdvisoryMPX20 hr
Nov 16, 2:46 AM CSTWinter Weather AdvisoryMPX26 hr
Nov 29, 4:19 AM CSTWinter Storm WatchMPX34 hr
Nov 30, 2:24 PM CSTWinter Weather AdvisoryMPX46 hr
Dec 12, 7:36 AM CSTSpecial Weather StatementMPX114 min
Dec 12, 3:08 PM CSTDense Fog AdvisoryMPX17 hr
Dec 13, 6:40 PM CSTDense Fog AdvisoryMPX15 hr
Dec 27, 2:07 PM CSTWinter Weather AdvisoryMPX22 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 archive20172019

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.