Alert archive / Wisconsin / Manitowoc County

Weather alerts in Manitowoc County, Wisconsin, 2018

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

Manitowoc County and its neighbors

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

Alerts
106
Warnings
15
Watches
12
Advisories
31
Busiest month
July21 alerts
Busiest day
August 28, 20189 alerts

Over time

By month

Warning verification

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

1 of 2 tornado warnings covering Manitowoc County in 2018 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 6 minutes after it went out.

Manitowoc County, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings2150%1100%6 min
Severe thunderstorm warnings4250%1833%33 min
Flash flood warnings00

Each office's whole area, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Green Bay, WI: tornado warnings9278%450%4 min
NWS Green Bay, WI: severe thunderstorm warnings734242%13068%22 min
NWS Green Bay, WI: flash flood warnings3233%367%41 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, 2:37 PM CSTWind Chill AdvisoryGRB19 hr
Jan 4, 3:00 PM CSTWind Chill AdvisoryGRB19 hr
Jan 14, 4:24 AM CSTWinter Storm WarningGRB49 hr
Jan 17, 3:06 AM CSTWinter Weather AdvisoryGRB18 hr
Jan 21, 2:44 PM CSTDense Fog AdvisoryGRB14 hr
Feb 2, 2:03 PM CSTWinter Weather AdvisoryGRB44 hr
Feb 4, 12:24 PM CSTWind Chill AdvisoryGRB22 hr
Feb 18, 4:17 AM CSTWinter Storm WatchGRB24 hr
Feb 18, 2:50 PM CSTWinter Weather AdvisoryGRB47 hr
Feb 22, 3:20 AM CSTWinter Weather AdvisoryGRB30 hr
Feb 24, 2:14 PM CSTWind AdvisoryGRB25 hr
Mar 4, 2:52 PM CSTWinter Weather AdvisoryGRB54 hr
Apr 1, 2:58 PM CDTWinter Storm WatchGRB24 hr
Apr 2, 2:48 PM CDTWinter Storm WarningGRB12 hr
Apr 3, 3:11 AM CDTWinter Storm WarningGRB28 hr
Apr 12, 8:41 AM CDTDense Fog AdvisoryGRB104 min
Apr 12, 3:15 PM CDTWinter Storm WatchGRB37 hr
Apr 13, 11:16 AM CDTSpecial Weather StatementGRB44 min
Apr 13, 2:29 PM CDTLakeshore Flood AdvisoryGRB60 hr
Apr 13, 3:35 PM CDTWinter Weather AdvisoryGRB30 hr
Apr 14, 4:25 AM CDTWinter Storm WarningGRB37 hr
Apr 14, 5:40 PM CDTBlizzard WarningGRB24 hr
Apr 15, 5:53 PM CDTWinter Weather AdvisoryGRB18 hr
Apr 17, 2:18 PM CDTWinter Weather AdvisoryGRB20 hr
May 1, 9:37 PM CDTSpecial Weather StatementGRB83 min
May 1, 10:43 PM CDTSpecial Weather StatementGRB2 hr
May 3, 8:16 PM CDTFlood WatchGRB7 hr
May 4, 3:05 AM CDTAreal Flood AdvisoryGRB6 hr
May 4, 9:51 AM CDTAreal Flood AdvisoryGRB3 hr
May 4, 12:44 PM CDTAreal Flood AdvisoryGRB6 hr
May 4, 2:44 PM CDTRiver Flood WarningGRB53 hr
May 4, 3:33 PM CDTFlash Flood WatchGRB16 hr
May 4, 6:10 PM CDTAreal Flood WarningGRB9 hr
May 5, 2:58 AM CDTAreal Flood AdvisoryGRB9 hr
May 5, 11:55 AM CDTAreal Flood AdvisoryGRB9 hr
Jun 4, 8:28 PM CDTSpecial Weather StatementGRB32 min
Jun 18, 12:19 AM CDTSpecial Weather StatementGRB41 min
Jun 18, 12:51 AM CDTSpecial Weather StatementGRB84 min
Jun 21, 4:23 AM CDTBeach Hazards StatementGRB17 hr
Jun 28, 3:14 PM CDTHeat AdvisoryGRB52 hr
Jun 28, 3:29 PM CDTBeach Hazards StatementGRB37 hr
Jun 30, 4:36 AM CDTBeach Hazards StatementGRB20 hr
Jul 1, 3:43 AM CDTBeach Hazards StatementGRB21 hr
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 1, 3:18 PM CDTMesoscale DiscussionSPC87 min
Jul 4, 6:08 PM CDTSpecial Weather StatementGRB67 min
Jul 13, 11:33 AM CDTSpecial Weather StatementGRB57 min
Jul 13, 3:54 PM CDTSevere Thunderstorm WatchSPC6 hr
Jul 13, 4:03 PM CDTSpecial Weather StatementGRB57 min
Jul 13, 4:36 PM CDTSevere Thunderstorm WarningGRB39 min
Jul 13, 5:02 PM CDTSpecial Weather StatementGRB58 min
Jul 13, 5:16 PM CDTSpecial Weather StatementGRB89 min
Jul 13, 6:07 PM CDTAreal Flood AdvisoryGRB3 hr
Jul 13, 8:51 PM CDTAreal Flood AdvisoryGRB114 min
Jul 19, 2:55 PM CDTBeach Hazards StatementGRB3 days
Jul 20, 5:56 PM CDTSpecial Weather StatementGRB64 min
Jul 20, 6:37 PM CDTSpecial Weather StatementGRB68 min
Jul 25, 9:49 PM CDTSpecial Weather StatementGRB56 min
Jul 25, 10:22 PM CDTSpecial Weather StatementGRB38 min
Jul 29, 2:44 PM CDTSpecial Weather StatementGRB61 min
Jul 30, 1:38 PM CDTSpecial Weather StatementGRB22 min
Aug 17, 2:57 PM CDTSpecial Weather StatementGRB48 min
Aug 20, 2:55 PM CDTBeach Hazards StatementGRB28 hr
Aug 23, 3:26 PM CDTBeach Hazards StatementGRB47 hr
Aug 26, 10:04 AM CDTBeach Hazards StatementGRB54 hr
Aug 26, 2:15 PM CDTFlash Flood WatchGRB55 hr
Aug 26, 4:42 PM CDTSevere Thunderstorm WatchSPC4 hr
Aug 26, 6:13 PM CDTSpecial Weather StatementGRB62 min
Aug 27, 6:01 PM CDTSevere Thunderstorm WatchSPC7 hr
Aug 27, 10:32 PM CDTSevere Thunderstorm WarningGRB43 min
Aug 27, 10:34 PM CDTMesoscale DiscussionSPC116 min
Aug 27, 11:09 PM CDTAreal Flood AdvisoryGRB6 hr
Aug 28, 1:14 PM CDTSevere Thunderstorm WatchSPC8 hr
Aug 28, 3:24 PM CDTMesoscale DiscussionSPC96 min
Aug 28, 3:50 PM CDTAreal Flood AdvisoryGRB3 hr
Aug 28, 4:03 PM CDTSevere Thunderstorm WarningGRB42 min
Aug 28, 4:27 PM CDTTornado WarningGRB18 min
Aug 28, 4:38 PM CDTTornado WarningGRB20 min
Aug 30, 2:58 PM CDTFlash Flood WatchGRB37 hr
Aug 30, 4:23 PM CDTBeach Hazards StatementGRB51 hr
Sep 2, 3:09 AM CDTSpecial Weather StatementGRB111 min
Sep 2, 3:37 PM CDTSpecial Weather StatementGRB38 min
Sep 4, 3:00 PM CDTBeach Hazards StatementGRB22 hr
Sep 7, 10:16 AM CDTBeach Hazards StatementGRB66 hr
Sep 17, 8:33 PM CDTSevere Thunderstorm WarningGRB30 min
Sep 23, 2:57 PM CDTBeach Hazards StatementGRB22 hr
Sep 25, 4:24 PM CDTSpecial Weather StatementGRB51 min
Sep 25, 4:37 PM CDTSpecial Weather StatementGRB38 min
Sep 25, 5:04 PM CDTSpecial Weather StatementGRB56 min
Sep 26, 4:05 PM CDTBeach Hazards StatementGRB30 hr
Sep 28, 2:55 AM CDTFrost AdvisoryGRB30 hr
Oct 3, 5:13 PM CDTMesoscale DiscussionSPC2 hr
Oct 3, 9:22 PM CDTMesoscale DiscussionSPC113 min
Oct 3, 9:59 PM CDTSpecial Weather StatementGRB61 min
Oct 3, 10:54 PM CDTSpecial Weather StatementGRB36 min
Oct 9, 4:16 PM CDTSpecial Weather StatementGRB44 min
Oct 11, 3:30 AM CDTFreeze WarningGRB29 hr
Oct 12, 2:52 PM CDTFreeze WarningGRB18 hr
Nov 3, 2:25 PM CDTWind AdvisoryGRB33 hr
Nov 8, 2:51 PM CSTWinter Weather AdvisoryGRB33 hr
Nov 9, 2:53 PM CSTWind AdvisoryGRB18 hr
Dec 12, 9:16 PM CSTDense Fog AdvisoryGRB13 hr
Dec 30, 2:31 PM CSTWinter Weather AdvisoryGRB36 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.