Alert archive / Wisconsin / Green County

Weather alerts in Green County, Wisconsin, 2018

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

Green County and its neighbors

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

Alerts
150
Warnings
30
Watches
23
Advisories
54
Busiest month
August23 alerts
Busiest day
July 1, 20188 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 2 tornado warnings covering Green County in 2018 had a tornado report inside them.

Green County, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings20100%0
Severe thunderstorm warnings7443%2100%14 min
Flash flood warnings00

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 10, 3:17 AM CSTDense Fog AdvisoryMKX6 hr
Jan 10, 2:27 PM CSTDense Fog AdvisoryMKX6 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
Jan 21, 12:02 PM CSTDense Fog AdvisoryMKX18 hr
Jan 22, 3:44 PM CSTSpecial Weather StatementMKX31 min
Jan 22, 4:10 PM CSTRiver Flood WarningMKX3 days
Feb 2, 1:42 PM CSTWinter Weather AdvisoryMKX49 hr
Feb 4, 3:05 PM CSTWinter Weather AdvisoryMKX30 hr
Feb 7, 11:28 AM CSTWinter Storm WatchMKX15 hr
Feb 8, 2:19 AM CSTWinter Storm WarningMKX31 hr
Feb 8, 9:07 PM CSTMesoscale DiscussionSPC6 hr
Feb 10, 2:35 PM CSTWinter Weather AdvisoryMKX21 hr
Feb 14, 4:29 PM CSTDense Fog AdvisoryMKX8 hr
Feb 15, 6:57 AM CSTDense Fog AdvisoryMKX3 hr
Feb 17, 9:41 PM CSTRiver Flood WatchMKX5 days
Feb 18, 4:05 AM CSTDense Fog AdvisoryMKX6 hr
Feb 18, 12:45 PM CSTFlood WatchMKX53 hr
Feb 19, 1:01 PM CSTDense Fog AdvisoryMKX18 hr
Feb 19, 7:47 PM CSTAreal Flood AdvisoryMKX12 hr
Feb 19, 9:01 PM CSTRiver Flood WarningMKX9 days
Feb 19, 9:52 PM CSTAreal Flood WarningMKX12 hr
Feb 19, 11:46 PM CSTRiver Flood WatchMKX5 days
Feb 20, 3:50 AM CSTRiver Flood WarningMKX10 days
Feb 20, 9:45 AM CSTAreal Flood WarningMKX21 hr
Feb 20, 11:45 PM CSTRiver Flood WarningMKX40 hr
Feb 22, 2:44 AM CSTWinter Weather AdvisoryMKX29 hr
Mar 4, 2:45 PM CSTWinter Weather AdvisoryMKX46 hr
Mar 31, 5:25 AM CDTWind AdvisoryMKX13 hr
Apr 2, 3:38 AM CDTWinter Weather AdvisoryMKX51 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, 6:02 PM CDTMesoscale DiscussionSPC6 hr
Apr 17, 4:04 AM CDTWinter Weather AdvisoryMKX45 hr
May 2, 6:40 PM CDTSpecial Weather StatementMKX65 min
May 2, 6:53 PM CDTSevere Thunderstorm WarningMKX52 min
May 2, 7:44 PM CDTSevere Thunderstorm WarningMKX46 min
May 9, 1:49 PM CDTMesoscale DiscussionSPC116 min
May 9, 2:53 PM CDTSpecial Weather StatementMKX37 min
May 9, 3:50 PM CDTMesoscale DiscussionSPC85 min
May 14, 2:40 AM CDTMesoscale DiscussionSPC2 hr
May 14, 7:53 AM CDTSpecial Weather StatementMKX37 min
May 21, 11:01 AM CDTDense Fog AdvisoryMKX21 hr
May 23, 3:20 AM CDTDense Fog AdvisoryMKX6 hr
Jun 2, 9:51 PM CDTSpecial Weather StatementMKX39 min
Jun 2, 10:25 PM CDTSpecial Weather StatementMKX50 min
Jun 6, 9:44 AM CDTSpecial Weather StatementMKX46 min
Jun 9, 7:43 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 9, 11:44 PM CDTMesoscale DiscussionSPC2 hr
Jun 15, 12:58 PM CDTHeat AdvisoryMKX54 hr
Jun 16, 12:12 AM CDTSpecial Weather StatementMKX48 min
Jun 16, 3:22 PM CDTMesoscale DiscussionSPC53 min
Jun 18, 7:40 PM CDTAreal Flood AdvisoryMKX3 hr
Jun 21, 4:34 AM CDTFlash Flood WatchMKX10 hr
Jun 21, 2:08 PM CDTRiver Flood WarningMKX29 hr
Jun 26, 2:26 AM CDTFlash Flood WatchMKX20 hr
Jun 26, 1:31 PM CDTMesoscale DiscussionSPC89 min
Jun 26, 2:47 PM CDTTornado Warning Tornado observedMKX28 min
Jun 26, 3:26 PM CDTTornado WarningMKX34 min
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, 4:41 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 30, 7:38 PM CDTSevere Thunderstorm WarningMKX52 min
Jun 30, 8:05 PM CDTMesoscale DiscussionSPC85 min
Jun 30, 8:19 PM CDTAreal Flood AdvisoryMKX3 hr
Jun 30, 10:09 PM CDTSpecial Weather StatementMKX21 min
Jun 30, 11:19 PM CDTSpecial Weather StatementMKX26 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, 7:04 PM CDTSevere Thunderstorm WarningMKX41 min
Jul 13, 7:29 PM CDTSevere Thunderstorm WarningMKX61 min
Aug 3, 3:07 AM CDTDense Fog AdvisoryMKX6 hr
Aug 5, 5:44 PM CDTMesoscale DiscussionSPC2 hr
Aug 5, 6:39 PM CDTSevere Thunderstorm WarningMKX36 min
Aug 5, 7:12 PM CDTSevere Thunderstorm WarningMKX48 min
Aug 6, 12:42 AM CDTSpecial Weather StatementMKX48 min
Aug 8, 2:20 AM CDTDense Fog AdvisoryMKX8 hr
Aug 9, 2:55 PM CDTMesoscale DiscussionSPC65 min
Aug 10, 2:20 AM CDTDense Fog AdvisoryMKX6 hr
Aug 16, 5:04 AM CDTDense Fog AdvisoryMKX4 hr
Aug 16, 8:35 PM CDTAreal Flood AdvisoryMKX3 hr
Aug 17, 11:24 PM CDTDense Fog AdvisoryMKX10 hr
Aug 19, 1:53 PM CDTFlash Flood WatchMKX41 hr
Aug 20, 4:46 PM CDTMesoscale DiscussionSPC119 min
Aug 20, 7:07 PM CDTAreal Flood AdvisoryMKX3 hr
Aug 20, 9:43 PM CDTRiver Flood WarningMKX6 days
Aug 22, 2:06 PM CDTRiver Flood WarningMKX24 hr
Aug 26, 2:37 AM CDTDense Fog AdvisoryMKX6 hr
Aug 26, 3:51 PM CDTMesoscale DiscussionSPC84 min
Aug 26, 8:08 PM CDTSpecial Weather StatementMKX37 min
Aug 27, 11:45 AM CDTFlash Flood WatchMKX35 hr
Aug 28, 12:14 PM CDTMesoscale DiscussionSPC2 hr
Aug 28, 1:14 PM CDTSevere Thunderstorm WatchSPC8 hr
Aug 30, 2:54 PM CDTFlash Flood WatchMKX46 hr
Sep 1, 11:53 PM CDTSpecial Weather StatementMKX52 min
Sep 2, 12:32 AM CDTSpecial Weather StatementMKX43 min
Sep 2, 3:36 PM CDTAreal Flood AdvisoryMKX2 hr
Sep 2, 3:47 PM CDTMesoscale DiscussionSPC118 min
Sep 2, 4:39 PM CDTAreal Flood AdvisoryMKX3 hr
Sep 2, 5:35 PM CDTAreal Flood AdvisoryMKX3 hr
Sep 2, 5:37 PM CDTSpecial Weather StatementMKX23 min
Sep 2, 9:30 PM CDTRiver Flood WatchMKX5 days
Sep 3, 10:51 AM CDTRiver Flood WarningMKX7 days
Sep 3, 9:54 PM CDTRiver Flood WatchMKX4 days
Sep 4, 3:54 AM CDTRiver Flood WarningMKX6 days
Sep 20, 2:15 AM CDTAreal Flood AdvisoryMKX5 hr
Sep 20, 10:07 AM CDTRiver Flood WatchMKX6 days
Sep 20, 10:07 AM CDTRiver Flood WatchMKX67 hr
Sep 20, 2:34 PM CDTRiver Flood WarningMKX8 days
Sep 20, 2:34 PM CDTRiver Flood WarningMKX4 days
Sep 25, 1:07 PM CDTMesoscale DiscussionSPC113 min
Sep 25, 1:36 PM CDTSevere Thunderstorm WatchSPC8 hr
Sep 25, 3:39 PM CDTMesoscale DiscussionSPC96 min
Sep 28, 2:44 AM CDTFrost AdvisoryMKX29 hr
Oct 1, 10:16 AM CDTRiver Flood WatchMKX12 hr
Oct 1, 3:02 PM CDTRiver Flood WatchMKX21 days
Oct 1, 9:59 PM CDTRiver Flood WarningMKX13 days
Oct 2, 2:56 AM CDTRiver Flood WarningMKX22 days
Oct 3, 5:13 PM CDTMesoscale DiscussionSPC2 hr
Oct 4, 12:57 PM CDTFlash Flood WatchMKX41 hr
Oct 9, 2:45 PM CDTMesoscale DiscussionSPC2 hr
Oct 11, 3:13 AM CDTFreeze WarningMKX29 hr
Oct 12, 2:59 PM CDTFreeze WarningMKX18 hr
Oct 20, 9:32 AM CDTWind AdvisoryMKX8 hr
Oct 28, 2:53 AM CDTWind AdvisoryMKX12 hr
Oct 30, 1:49 PM CDTSpecial Weather StatementMKX41 min
Oct 30, 2:49 PM CDTSpecial Weather StatementMKX41 min
Nov 6, 9:51 AM CSTRiver Flood WarningMKX36 hr
Nov 16, 11:28 AM CSTWinter Weather AdvisoryMKX20 hr
Nov 23, 2:25 PM CSTWinter Storm WatchMKX25 hr
Nov 24, 2:59 PM CSTWinter Storm WarningMKX37 hr
Nov 24, 2:59 PM CSTWinter Weather AdvisoryMKX35 hr
Dec 11, 1:07 PM CSTWinter Weather AdvisoryMKX22 hr
Dec 14, 8:18 AM CSTDense Fog AdvisoryMKX3 hr
Dec 14, 10:57 AM CSTDense Fog AdvisoryMKX63 min
Dec 14, 6:07 PM CSTDense Fog AdvisoryMKX9 hr
Dec 30, 2:29 PM CSTWinter Weather AdvisoryMKX37 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.