Alert archive / Wisconsin / Columbia County

Weather alerts in Columbia County, Wisconsin, 2018

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

Columbia County and its neighbors

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

Alerts
139
Warnings
42
Watches
16
Advisories
45
Busiest month
August40 alerts
Busiest day
August 28, 201814 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 Columbia County in 2018 had a tornado report inside them; 0 of 2 tornado reports fell inside a warning.

Columbia County, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings30100%20%
Severe thunderstorm warnings191332%1776%15 min
Flash flood warnings5340%2100%85 min

Each office's whole area, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Milwaukee, WI: tornado warnings16756%4374%15 min
NWS Milwaukee, WI: severe thunderstorm warnings794839%14778%21 min
NWS Milwaukee, WI: flash flood warnings191047%2181%71 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 3, 1:39 PM CSTWind Chill AdvisoryMKX20 hr
Jan 4, 1:45 PM CSTWind Chill AdvisoryMKX20 hr
Jan 5, 2:52 PM CSTWind Chill AdvisoryMKX19 hr
Jan 11, 2:57 AM CSTWinter Weather AdvisoryMKX17 hr
Jan 14, 3:15 AM CSTWinter Weather AdvisoryMKX55 hr
Jan 21, 6:49 AM CSTDense Fog AdvisoryMKX5 hr
Feb 2, 1:42 PM CSTWinter Weather AdvisoryMKX49 hr
Feb 4, 3:05 PM CSTWind Chill AdvisoryMKX18 hr
Feb 4, 3:05 PM CSTWinter Weather AdvisoryMKX30 hr
Feb 7, 5:01 PM CSTWinter Weather AdvisoryMKX43 hr
Feb 14, 4:29 PM CSTDense Fog AdvisoryMKX8 hr
Feb 18, 4:00 AM CSTWinter Storm WatchMKX9 hr
Feb 18, 12:45 PM CSTIce Storm WarningMKX22 hr
Feb 19, 3:21 AM CSTWinter Weather AdvisoryMKX35 hr
Feb 19, 1:01 PM CSTDense Fog AdvisoryMKX18 hr
Feb 20, 2:12 PM CSTRiver Flood WarningMKX26 hr
Feb 22, 2:44 AM CSTWinter Weather AdvisoryMKX29 hr
Mar 4, 2:45 PM CSTWinter Weather AdvisoryMKX46 hr
Mar 28, 3:18 AM CDTDense Fog AdvisoryMKX6 hr
Mar 31, 5:25 AM CDTWind AdvisoryMKX13 hr
Apr 2, 3:38 AM CDTWinter Weather AdvisoryMKX51 hr
Apr 12, 8:30 AM CDTDense Fog AdvisoryMKX102 min
Apr 13, 3:18 AM CDTWinter Storm WatchMKX12 hr
Apr 13, 8:44 AM CDTMesoscale DiscussionSPC3 hr
Apr 13, 3:17 PM CDTWinter Weather AdvisoryMKX52 hr
Apr 13, 3:20 PM CDTWind AdvisoryMKX28 hr
Apr 14, 3:10 PM CDTWinter Storm WarningMKX28 hr
Apr 14, 6:02 PM CDTMesoscale DiscussionSPC6 hr
Apr 17, 4:04 AM CDTWinter Storm WatchMKX10 hr
Apr 17, 4:04 AM CDTWinter Weather AdvisoryMKX45 hr
Apr 18, 11:24 AM CDTWinter Storm WarningMKX14 hr
Apr 26, 6:49 AM CDTRiver Flood WarningMKX59 hr
May 2, 6:40 PM CDTSpecial Weather StatementMKX65 min
May 3, 3:15 PM CDTFlood WatchMKX20 hr
May 23, 3:20 AM CDTDense Fog AdvisoryMKX6 hr
Jun 6, 8:39 AM CDTSpecial Weather StatementMKX51 min
Jun 15, 6:02 AM CDTAreal Flood AdvisoryMKX3 hr
Jun 15, 12:58 PM CDTHeat AdvisoryMKX54 hr
Jun 15, 9:27 PM CDTSpecial Weather StatementMKX33 min
Jun 15, 10:00 PM CDTSpecial Weather StatementMKX30 min
Jun 16, 3:22 PM CDTMesoscale DiscussionSPC53 min
Jun 16, 3:58 PM CDTSevere Thunderstorm WarningMKX32 min
Jun 16, 4:02 PM CDTSevere Thunderstorm WarningMKX28 min
Jun 16, 4:47 PM CDTSevere Thunderstorm WarningMKX43 min
Jun 16, 5:06 PM CDTAreal Flood AdvisoryMKX3 hr
Jun 16, 5:38 PM CDTSevere Thunderstorm WarningMKX52 min
Jun 16, 6:18 PM CDTFlash Flood WarningMKX3 hr
Jun 16, 6:28 PM CDTSevere Thunderstorm WarningMKX47 min
Jun 16, 7:35 PM CDTSpecial Weather StatementMKX25 min
Jun 16, 9:11 PM CDTAreal Flood WarningMKX12 hr
Jun 19, 2:54 AM CDTRiver Flood WatchMKX8 hr
Jun 19, 10:31 AM CDTRiver Flood WarningMKX5 days
Jun 28, 3:15 AM CDTHeat AdvisoryMKX67 hr
Jun 28, 5:06 AM CDTDense Fog AdvisoryMKX3 hr
Jun 29, 2:31 AM CDTExcessive Heat WarningMKX61 hr
Jun 30, 4:23 PM CDTMesoscale DiscussionSPC67 min
Jun 30, 4:41 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 30, 6:53 PM CDTSevere Thunderstorm WarningMKX37 min
Jun 30, 8:05 PM CDTMesoscale DiscussionSPC85 min
Jul 1, 11:37 AM CDTMesoscale DiscussionSPC83 min
Jul 1, 12:04 PM CDTTornado WatchSPC6 hr
Jul 1, 1:37 PM CDTMesoscale DiscussionSPC53 min
Jul 4, 3:36 AM CDTHeat AdvisoryMKX16 hr
Jul 4, 6:27 PM CDTSpecial Weather StatementMKX63 min
Jul 4, 6:29 PM CDTSpecial Weather StatementMKX61 min
Jul 13, 3:54 PM CDTSevere Thunderstorm WatchSPC6 hr
Jul 13, 6:23 PM CDTMesoscale DiscussionSPC2 hr
Jul 13, 7:26 PM CDTSevere Thunderstorm WarningMKX49 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 1, 6:52 PM CDTMesoscale DiscussionSPC2 hr
Aug 3, 3:07 AM CDTDense Fog AdvisoryMKX6 hr
Aug 8, 2:20 AM CDTDense Fog AdvisoryMKX8 hr
Aug 9, 2:21 PM CDTSpecial Weather StatementMKX39 min
Aug 9, 2:55 PM CDTMesoscale DiscussionSPC65 min
Aug 9, 3:01 PM CDTSpecial Weather StatementMKX44 min
Aug 9, 3:07 PM CDTSpecial Weather StatementMKX53 min
Aug 9, 3:15 PM CDTSevere Thunderstorm WarningMKX22 min
Aug 10, 2:20 AM CDTDense Fog AdvisoryMKX6 hr
Aug 16, 5:04 AM CDTDense Fog AdvisoryMKX4 hr
Aug 17, 11:24 PM CDTDense Fog AdvisoryMKX10 hr
Aug 19, 4:22 AM CDTDense Fog AdvisoryMKX5 hr
Aug 19, 1:53 PM CDTFlash Flood WatchMKX41 hr
Aug 20, 10:38 PM CDTAreal Flood AdvisoryMKX3 hr
Aug 21, 12:11 AM CDTAreal Flood AdvisoryMKX3 hr
Aug 26, 2:37 AM CDTDense Fog AdvisoryMKX6 hr
Aug 26, 3:24 PM CDTSevere Thunderstorm WarningMKX36 min
Aug 26, 3:51 PM CDTMesoscale DiscussionSPC84 min
Aug 26, 3:57 PM CDTSevere Thunderstorm WarningMKX48 min
Aug 26, 4:11 PM CDTSevere Thunderstorm WarningMKX49 min
Aug 26, 4:41 PM CDTSevere Thunderstorm WarningMKX49 min
Aug 26, 8:04 PM CDTTornado WarningMKX20 min
Aug 27, 11:45 AM CDTFlash Flood WatchMKX35 hr
Aug 27, 10:34 PM CDTMesoscale DiscussionSPC116 min
Aug 27, 11:36 PM CDTTornado WarningMKX24 min
Aug 27, 11:51 PM CDTFlash Flood WarningMKX3 hr
Aug 27, 11:57 PM CDTTornado WarningMKX33 min
Aug 28, 2:43 AM CDTFlash Flood WarningMKX3 hr
Aug 28, 5:45 AM CDTAreal Flood WarningMKX6 hr
Aug 28, 12:14 PM CDTMesoscale DiscussionSPC2 hr
Aug 28, 1:14 PM CDTSevere Thunderstorm WatchSPC8 hr
Aug 28, 2:29 PM CDTSevere Thunderstorm WarningMKX46 min
Aug 28, 3:01 PM CDTFlash Flood WarningMKX10 hr
Aug 28, 3:06 PM CDTSevere Thunderstorm WarningMKX39 min
Aug 28, 3:24 PM CDTMesoscale DiscussionSPC96 min
Aug 28, 3:35 PM CDTSevere Thunderstorm WarningMKX55 min
Aug 28, 3:44 PM CDTSevere Thunderstorm WarningMKX33 min
Aug 28, 9:34 PM CDTRiver Flood WarningMKX39 hr
Aug 29, 1:22 AM CDTAreal Flood WarningMKX36 hr
Aug 30, 2:54 PM CDTFlash Flood WatchMKX46 hr
Sep 2, 3:15 PM CDTSpecial Weather StatementMKX30 min
Sep 2, 3:47 PM CDTMesoscale DiscussionSPC118 min
Sep 2, 4:39 PM CDTAreal Flood AdvisoryMKX3 hr
Sep 4, 12:53 AM CDTFlash Flood WarningMKX5 hr
Sep 18, 4:11 AM CDTSpecial Weather StatementMKX34 min
Sep 20, 5:29 PM CDTMesoscale DiscussionSPC2 hr
Sep 20, 8:20 PM CDTMesoscale DiscussionSPC115 min
Sep 20, 10:45 PM CDTMesoscale DiscussionSPC60 min
Sep 25, 3:29 PM CDTSevere Thunderstorm WarningMKX19 min
Sep 28, 2:44 AM CDTFrost AdvisoryMKX29 hr
Oct 3, 5:13 PM CDTMesoscale DiscussionSPC2 hr
Oct 4, 12:57 PM CDTFlash Flood WatchMKX41 hr
Oct 8, 10:47 AM CDTRiver Flood WatchMKX22 days
Oct 9, 2:45 PM CDTMesoscale DiscussionSPC2 hr
Oct 9, 4:47 PM CDTSevere Thunderstorm WarningMKX28 min
Oct 9, 5:09 PM CDTTornado WatchSPC4 hr
Oct 9, 6:14 PM CDTSevere Thunderstorm WarningMKX46 min
Oct 9, 6:37 PM CDTMesoscale DiscussionSPC83 min
Oct 10, 3:43 PM CDTRiver Flood WarningMKX19 hr
Oct 10, 3:43 PM CDTRiver Flood WarningMKX6 days
Oct 11, 3:13 AM CDTFreeze WarningMKX29 hr
Oct 12, 2:59 PM CDTFreeze WarningMKX18 hr
Dec 11, 1:07 PM CSTWinter Weather AdvisoryMKX22 hr
Dec 12, 8:04 PM CSTDense Fog AdvisoryMKX14 hr
Dec 14, 8:18 AM CSTDense Fog AdvisoryMKX3 hr
Dec 30, 2:29 PM CSTWinter Weather AdvisoryMKX37 hr
Dec 31, 9:58 AM CSTWinter Weather AdvisoryMKX17 hr
Dec 31, 11:50 AM CSTMesoscale DiscussionSPC6 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.