Alert archive / Wisconsin / Bayfield County

Weather alerts in Bayfield County, Wisconsin, 2018

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

Bayfield County and its neighbors

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

Alerts
138
Warnings
39
Watches
23
Advisories
31
Busiest month
June43 alerts
Busiest day
June 17, 201819 alerts

Over time

By month

Warning verification

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

Bayfield County, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings17853%757%18 min
Flash flood warnings6517%12100%262 min

Each office's whole area, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Duluth, MN: tornado warnings20100%20%
NWS Duluth, MN: severe thunderstorm warnings22010154%21376%21 min
NWS Duluth, MN: flash flood warnings221532%4764%178 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, 10:47 AM CSTWind Chill AdvisoryDLH23 hr
Jan 9, 3:59 AM CSTWinter Storm WatchDLH24 hr
Jan 10, 3:34 AM CSTWinter Weather AdvisoryDLH41 hr
Jan 12, 2:22 PM CSTWind Chill AdvisoryDLH21 hr
Jan 13, 3:12 PM CSTWinter Weather AdvisoryDLH66 hr
Jan 15, 2:54 PM CSTWinter Storm WarningDLH15 hr
Jan 19, 1:53 PM CSTWinter Storm WatchDLH48 hr
Jan 21, 1:38 PM CSTWinter Storm WarningDLH34 hr
Jan 21, 1:38 PM CSTWinter Weather AdvisoryDLH34 hr
Jan 31, 3:47 PM CSTWind Chill AdvisoryDLH20 hr
Feb 1, 2:09 PM CSTWind Chill AdvisoryDLH20 hr
Feb 2, 3:19 PM CSTWinter Weather AdvisoryDLH30 hr
Feb 4, 11:59 AM CSTWind Chill AdvisoryDLH19 hr
Feb 17, 9:08 PM CSTWinter Weather AdvisoryDLH21 hr
Feb 19, 3:43 AM CSTWinter Weather AdvisoryDLH34 hr
Feb 21, 2:54 PM CSTWinter Weather AdvisoryDLH45 hr
Feb 22, 3:49 PM CSTWinter Storm WatchDLH22 hr
Feb 23, 2:05 PM CSTWinter Storm WarningDLH43 hr
Feb 24, 4:46 PM CSTMesoscale DiscussionSPC5 hr
Mar 3, 3:17 AM CSTWinter Storm WatchDLH36 hr
Mar 4, 3:09 PM CSTWinter Weather AdvisoryDLH42 hr
Mar 26, 3:24 AM CDTWinter Weather AdvisoryDLH21 hr
Mar 29, 3:14 AM CDTWinter Storm WatchDLH25 hr
Mar 30, 3:54 AM CDTWinter Storm WarningDLH32 hr
Apr 2, 9:52 AM CDTWinter Weather AdvisoryDLH39 hr
Apr 6, 5:54 AM CDTSpecial Weather StatementDLH66 min
Apr 6, 6:54 AM CDTSpecial Weather StatementDLH51 min
Apr 13, 3:50 AM CDTWinter Storm WatchDLH24 hr
Apr 13, 3:54 AM CDTLakeshore Flood WatchDLH11 hr
Apr 13, 3:21 PM CDTLakeshore Flood WarningDLH52 hr
Apr 14, 4:00 AM CDTWinter Storm WarningDLH51 hr
Apr 14, 4:37 AM CDTWind AdvisoryDLH14 hr
Apr 14, 2:18 PM CDTBlizzard WarningDLH41 hr
May 29, 7:44 PM CDTSpecial Weather StatementDLH31 min
May 30, 6:56 AM CDTSpecial Weather StatementDLH34 min
Jun 15, 2:41 AM CDTMesoscale DiscussionSPC3 hr
Jun 15, 3:49 AM CDTSevere Thunderstorm WarningDLH41 min
Jun 15, 3:56 AM CDTSevere Thunderstorm WarningDLH49 min
Jun 15, 4:15 AM CDTSevere Thunderstorm WarningDLH45 min
Jun 15, 10:12 AM CDTSpecial Weather StatementDLH33 min
Jun 15, 11:26 AM CDTAreal Flood AdvisoryDLH3 hr
Jun 15, 11:26 AM CDTMesoscale DiscussionSPC64 min
Jun 15, 12:16 PM CDTFlash Flood WatchDLH59 hr
Jun 15, 12:27 PM CDTSpecial Weather StatementDLH33 min
Jun 15, 1:12 PM CDTSpecial Weather StatementDLH18 min
Jun 15, 1:23 PM CDTAreal Flood WarningDLH15 hr
Jun 15, 1:39 PM CDTSpecial Weather StatementDLH21 min
Jun 15, 2:10 PM CDTSevere Thunderstorm WarningDLH50 min
Jun 16, 4:13 AM CDTAreal Flood WarningDLH3 days
Jun 16, 9:08 PM CDTMesoscale DiscussionSPC67 min
Jun 16, 9:47 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 16, 10:39 PM CDTFlash Flood WarningDLH8 hr
Jun 16, 11:44 PM CDTMesoscale DiscussionSPC2 hr
Jun 16, 11:46 PM CDTFlash Flood Warning EmergencyDLH5 hr
Jun 17, 6:27 AM CDTAreal Flood WarningDLH48 hr
Jun 17, 7:28 AM CDTAreal Flood WarningDLH4 days
Jun 17, 12:12 PM CDTMesoscale DiscussionSPC93 min
Jun 17, 12:34 PM CDTTornado WatchSPC8 hr
Jun 17, 3:01 PM CDTSevere Thunderstorm WarningDLH44 min
Jun 17, 3:08 PM CDTMesoscale DiscussionSPC97 min
Jun 17, 3:17 PM CDTSpecial Weather StatementDLH13 min
Jun 17, 3:36 PM CDTSevere Thunderstorm WarningDLH24 min
Jun 17, 3:39 PM CDTSpecial Weather StatementDLH21 min
Jun 17, 3:47 PM CDTFlash Flood WarningDLH3 hr
Jun 17, 3:57 PM CDTSevere Thunderstorm WarningDLH78 min
Jun 17, 4:23 PM CDTFlash Flood WarningDLH3 hr
Jun 17, 4:59 PM CDTAreal Flood AdvisoryDLH3 hr
Jun 17, 5:23 PM CDTMesoscale DiscussionSPC2 hr
Jun 19, 6:28 AM CDTAreal Flood WarningDLH5 hr
Jun 28, 1:33 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 28, 3:53 PM CDTMesoscale DiscussionSPC97 min
Jun 29, 4:14 AM CDTMesoscale DiscussionSPC2 hr
Jun 29, 4:41 AM CDTSevere Thunderstorm WatchSPC5 hr
Jun 29, 6:41 AM CDTMesoscale DiscussionSPC2 hr
Jun 29, 11:56 PM CDTSevere Thunderstorm WatchSPC5 hr
Jun 30, 3:06 AM CDTHeat AdvisoryDLH16 hr
Jun 30, 3:21 AM CDTMesoscale DiscussionSPC114 min
Jun 30, 4:43 AM CDTSpecial Weather StatementDLH17 min
Jul 4, 9:56 AM CDTMesoscale DiscussionSPC2 hr
Jul 8, 6:15 PM CDTSpecial Weather StatementDLH30 min
Jul 8, 6:46 PM CDTSpecial Weather StatementDLH29 min
Jul 8, 7:58 PM CDTMesoscale DiscussionSPC2 hr
Jul 8, 9:40 PM CDTSpecial Weather StatementDLH20 min
Jul 8, 9:59 PM CDTSpecial Weather StatementDLH31 min
Jul 11, 3:10 PM CDTFlash Flood WatchDLH16 hr
Jul 12, 12:57 AM CDTSevere Thunderstorm WatchSPC6 hr
Jul 14, 3:16 AM CDTDense Fog AdvisoryDLH5 hr
Jul 25, 4:46 PM CDTSpecial Weather StatementDLH29 min
Aug 5, 3:57 PM CDTMesoscale DiscussionSPC93 min
Aug 8, 12:36 AM CDTDense Fog AdvisoryDLH8 hr
Aug 8, 5:02 PM CDTMesoscale DiscussionSPC118 min
Aug 8, 6:12 PM CDTSpecial Weather StatementDLH48 min
Aug 8, 6:35 PM CDTSpecial Weather StatementDLH25 min
Aug 8, 6:55 PM CDTSevere Thunderstorm WarningDLH50 min
Aug 8, 7:27 PM CDTSevere Thunderstorm WarningDLH33 min
Aug 25, 3:12 AM CDTDense Fog AdvisoryDLH7 hr
Aug 26, 4:00 PM CDTSpecial Weather StatementDLH30 min
Aug 26, 4:51 PM CDTSpecial Weather StatementDLH24 min
Aug 26, 5:42 PM CDTFlash Flood WarningDLH3 hr
Aug 27, 2:24 PM CDTMesoscale DiscussionSPC96 min
Aug 27, 2:57 PM CDTSevere Thunderstorm WatchSPC7 hr
Aug 27, 3:13 PM CDTSpecial Weather StatementDLH17 min
Aug 27, 4:02 PM CDTSpecial Weather StatementDLH43 min
Aug 27, 4:12 PM CDTSevere Thunderstorm WarningDLH33 min
Aug 27, 4:27 PM CDTFlash Flood WarningDLH6 hr
Aug 27, 4:40 PM CDTSevere Thunderstorm WarningDLH50 min
Aug 27, 6:58 PM CDTSevere Thunderstorm WarningDLH47 min
Aug 27, 7:12 PM CDTSevere Thunderstorm WarningDLH33 min
Aug 27, 7:42 PM CDTSevere Thunderstorm WarningDLH48 min
Aug 27, 8:13 PM CDTAreal Flood AdvisoryDLH3 hr
Aug 27, 9:56 PM CDTAreal Flood AdvisoryDLH8 hr
Aug 31, 4:02 AM CDTSpecial Weather StatementDLH13 min
Aug 31, 4:26 AM CDTFlash Flood WatchDLH24 hr
Aug 31, 6:55 PM CDTSevere Thunderstorm WatchSPC5 hr
Aug 31, 10:59 PM CDTSpecial Weather StatementDLH16 min
Aug 31, 11:15 PM CDTSpecial Weather StatementDLH45 min
Aug 31, 11:22 PM CDTSevere Thunderstorm WarningDLH23 min
Aug 31, 11:36 PM CDTAreal Flood AdvisoryDLH114 min
Sep 15, 2:46 AM CDTSpecial Weather StatementDLH29 min
Sep 15, 3:01 AM CDTSevere Thunderstorm WarningDLH44 min
Sep 15, 3:46 AM CDTSpecial Weather StatementDLH29 min
Sep 27, 6:05 PM CDTSpecial Weather StatementDLH10 min
Sep 28, 2:55 AM CDTFreeze WarningDLH30 hr
Oct 3, 2:49 PM CDTSevere Thunderstorm WarningDLH26 min
Oct 3, 3:31 PM CDTTornado WatchSPC7 hr
Oct 8, 9:32 AM CDTFlood WatchDLH51 hr
Oct 8, 3:39 PM CDTLakeshore Flood WatchDLH24 hr
Oct 9, 3:50 AM CDTWind AdvisoryDLH36 hr
Oct 9, 3:16 PM CDTLakeshore Flood WarningDLH30 hr
Nov 3, 3:07 PM CDTWinter Weather AdvisoryDLH37 hr
Nov 8, 2:45 AM CSTWinter Weather AdvisoryDLH45 hr
Nov 18, 3:10 PM CSTWinter Weather AdvisoryDLH30 hr
Nov 26, 3:12 PM CSTWinter Weather AdvisoryDLH27 hr
Dec 1, 3:16 AM CSTWinter Weather AdvisoryDLH53 hr
Dec 25, 3:45 AM CSTWinter Storm WatchDLH24 hr
Dec 25, 5:31 PM CSTWinter Storm WarningDLH63 hr
Dec 30, 3:52 AM CSTWinter Storm WatchDLH10 hr
Dec 30, 2:03 PM CSTWinter Storm WarningDLH40 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.