Alert archive / Wisconsin / Marathon County

Weather alerts in Marathon County, Wisconsin, 2020

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

Marathon County and its neighbors

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

Alerts
121
Warnings
21
Watches
8
Advisories
32
Busiest month
July36 alerts
Busiest day
July 14, 20208 alerts

Over time

By month

Warning verification

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

Marathon County, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings8625%875%13 min
Flash flood warnings00

Each office's whole area, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Green Bay, WI: tornado warnings10100%30%
NWS Green Bay, WI: severe thunderstorm warnings803853%11072%23 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 8, 3:04 PM CSTWinter Weather AdvisoryGRB30 hr
Jan 16, 2:28 PM CSTWinter Weather AdvisoryGRB67 hr
Feb 8, 3:14 AM CSTWinter Weather AdvisoryGRB40 hr
Feb 8, 2:34 PM CSTWinter Storm WarningGRB28 hr
Feb 12, 2:58 PM CSTWind Chill AdvisoryGRB19 hr
Feb 13, 2:30 PM CSTWind Chill AdvisoryGRB20 hr
Feb 16, 2:58 PM CSTWinter Weather AdvisoryGRB41 hr
Mar 29, 2:40 AM CDTRiver Flood WarningGRB4 days
Mar 29, 9:56 AM CDTRiver Flood WarningGRB11 hr
Mar 29, 9:23 PM CDTRiver Flood WarningGRB14 hr
Apr 8, 12:46 AM CDTDense Fog AdvisoryGRB9 hr
Apr 10, 3:26 PM CDTWinter Storm WatchGRB23 hr
Apr 11, 2:40 PM CDTWinter Storm WarningGRB46 hr
Apr 20, 5:58 PM CDTSpecial Weather StatementGRB47 min
Apr 28, 12:52 AM CDTDense Fog AdvisoryGRB10 hr
May 6, 2:40 PM CDTFrost AdvisoryGRB15 hr
May 7, 9:15 AM CDTFreeze WarningGRB24 hr
May 7, 9:36 AM CDTFreeze WatchGRB18 hr
May 8, 3:31 AM CDTFreeze WarningGRB28 hr
May 9, 3:56 AM CDTWinter Weather AdvisoryGRB23 hr
May 10, 2:50 PM CDTFreeze WarningGRB17 hr
May 11, 2:52 PM CDTFreeze WarningGRB17 hr
May 12, 2:36 PM CDTFrost AdvisoryGRB17 hr
May 17, 8:00 PM CDTWind AdvisoryGRB8 hr
May 25, 10:30 AM CDTSpecial Weather StatementGRB60 min
May 25, 10:59 AM CDTMesoscale DiscussionSPC61 min
May 25, 11:02 AM CDTSpecial Weather StatementGRB43 min
May 25, 11:17 AM CDTSpecial Weather StatementGRB43 min
May 26, 12:25 PM CDTSpecial Weather StatementGRB50 min
May 26, 1:15 PM CDTSpecial Weather StatementGRB45 min
May 26, 1:59 PM CDTSpecial Weather StatementGRB61 min
May 26, 2:56 PM CDTSpecial Weather StatementGRB94 min
May 26, 4:29 PM CDTSpecial Weather StatementGRB91 min
May 27, 4:54 PM CDTSpecial Weather StatementGRB51 min
May 27, 6:10 PM CDTSpecial Weather StatementGRB50 min
May 27, 7:12 PM CDTSpecial Weather StatementGRB63 min
May 28, 8:18 AM CDTAreal Flood AdvisoryGRB6 hr
May 30, 1:44 PM CDTFrost AdvisoryGRB18 hr
Jun 1, 11:40 AM CDTSpecial Weather StatementGRB65 min
Jun 2, 5:32 PM CDTMesoscale DiscussionSPC118 min
Jun 9, 11:07 AM CDTFlash Flood WatchGRB16 hr
Jun 10, 8:50 PM CDTRiver Flood WarningGRB38 hr
Jun 11, 3:26 PM CDTMesoscale DiscussionSPC94 min
Jun 20, 9:21 AM CDTAreal Flood AdvisoryGRB4 hr
Jun 21, 3:22 PM CDTMesoscale DiscussionSPC113 min
Jun 21, 3:55 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 21, 7:22 PM CDTSpecial Weather StatementGRB68 min
Jun 21, 8:03 PM CDTSpecial Weather StatementGRB57 min
Jun 21, 8:51 PM CDTSpecial Weather StatementGRB39 min
Jun 21, 9:09 PM CDTMesoscale DiscussionSPC2 hr
Jun 29, 8:07 AM CDTSpecial Weather StatementGRB83 min
Jun 29, 8:51 AM CDTSpecial Weather StatementGRB84 min
Jul 2, 8:24 PM CDTSpecial Weather StatementGRB21 min
Jul 6, 4:21 PM CDTSpecial Weather StatementGRB54 min
Jul 6, 4:54 PM CDTSevere Thunderstorm WarningGRB66 min
Jul 6, 5:30 PM CDTSevere Thunderstorm WarningGRB30 min
Jul 8, 11:49 AM CDTSpecial Weather StatementGRB41 min
Jul 8, 12:17 PM CDTSpecial Weather StatementGRB43 min
Jul 8, 1:13 PM CDTSpecial Weather StatementGRB47 min
Jul 9, 7:23 AM CDTSpecial Weather StatementGRB97 min
Jul 9, 12:11 PM CDTFlood WatchGRB16 hr
Jul 9, 8:24 PM CDTSpecial Weather StatementGRB36 min
Jul 14, 4:37 AM CDTSpecial Weather StatementGRB38 min
Jul 14, 9:45 AM CDTSpecial Weather StatementGRB45 min
Jul 14, 11:28 AM CDTSpecial Weather StatementGRB62 min
Jul 14, 11:41 AM CDTAreal Flood AdvisoryGRB3 hr
Jul 14, 12:25 PM CDTSpecial Weather StatementGRB50 min
Jul 14, 4:11 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 14, 4:46 PM CDTSpecial Weather StatementGRB59 min
Jul 14, 6:04 PM CDTSpecial Weather StatementGRB41 min
Jul 14, 7:24 PM CDTSevere Thunderstorm WarningGRB33 min
Jul 14, 10:35 PM CDTRiver Flood WarningGRB6 hr
Jul 16, 3:29 AM CDTDense Fog AdvisoryGRB5 hr
Jul 17, 2:30 PM CDTHeat AdvisoryGRB30 hr
Jul 17, 9:03 PM CDTMesoscale DiscussionSPC117 min
Jul 17, 10:25 PM CDTSevere Thunderstorm WatchSPC8 hr
Jul 17, 11:36 PM CDTMesoscale DiscussionSPC114 min
Jul 18, 4:02 AM CDTMesoscale DiscussionSPC88 min
Jul 18, 5:19 AM CDTSevere Thunderstorm WarningGRB26 min
Jul 18, 8:36 PM CDTMesoscale DiscussionSPC114 min
Jul 18, 9:44 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 19, 1:13 AM CDTMesoscale DiscussionSPC92 min
Jul 19, 1:21 AM CDTSpecial Weather StatementGRB39 min
Jul 19, 2:22 AM CDTSevere Thunderstorm WarningGRB38 min
Jul 21, 10:48 PM CDTSpecial Weather StatementGRB57 min
Jul 26, 8:57 AM CDTSpecial Weather StatementGRB63 min
Jul 27, 12:18 AM CDTRiver Flood WarningGRB19 hr
Jul 27, 11:01 PM CDTRiver Flood WarningGRB21 days
Aug 8, 6:05 AM CDTSpecial Weather StatementGRB40 min
Aug 9, 12:30 PM CDTMesoscale DiscussionSPC3 hr
Aug 10, 12:44 PM CDTMesoscale DiscussionSPC61 min
Aug 13, 5:53 AM CDTSpecial Weather StatementGRB52 min
Aug 13, 6:57 AM CDTSpecial Weather StatementGRB63 min
Aug 14, 10:53 PM CDTSpecial Weather StatementGRB82 min
Aug 15, 12:03 AM CDTSpecial Weather StatementGRB57 min
Aug 23, 2:48 PM CDTSpecial Weather StatementGRB87 min
Aug 24, 1:13 AM CDTDense Fog AdvisoryGRB7 hr
Aug 24, 9:16 PM CDTSpecial Weather StatementGRB59 min
Aug 25, 2:50 AM CDTSevere Thunderstorm WarningGRB37 min
Aug 28, 7:52 AM CDTSpecial Weather StatementGRB38 min
Aug 28, 8:43 AM CDTSpecial Weather StatementGRB62 min
Sep 10, 2:29 PM CDTFrost AdvisoryGRB18 hr
Sep 17, 11:38 AM CDTFrost AdvisoryGRB20 hr
Sep 18, 1:43 PM CDTFrost AdvisoryGRB18 hr
Sep 25, 2:00 AM CDTDense Fog AdvisoryGRB5 hr
Sep 26, 2:34 PM CDTSpecial Weather StatementGRB56 min
Sep 26, 3:00 PM CDTSevere Thunderstorm WarningGRB45 min
Sep 26, 3:07 PM CDTMesoscale DiscussionSPC83 min
Sep 26, 3:09 PM CDTSevere Thunderstorm WarningGRB51 min
Oct 1, 3:33 AM CDTFrost AdvisoryGRB29 hr
Oct 2, 2:22 PM CDTFrost AdvisoryGRB18 hr
Oct 3, 2:23 PM CDTFrost AdvisoryGRB18 hr
Oct 12, 8:12 AM CDTSpecial Weather StatementGRB63 min
Oct 12, 9:07 AM CDTSpecial Weather StatementGRB53 min
Oct 19, 2:49 PM CDTWinter Weather AdvisoryGRB34 hr
Oct 20, 7:06 PM CDTMesoscale DiscussionSPC4 hr
Oct 31, 9:00 PM CDTWind AdvisoryGRB22 hr
Nov 14, 2:30 PM CSTWind AdvisoryGRB31 hr
Nov 24, 9:42 PM CSTDense Fog AdvisoryGRB9 hr
Dec 23, 2:55 AM CSTWinter Weather AdvisoryGRB30 hr
Dec 28, 2:03 PM CSTWinter Weather AdvisoryGRB43 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.