Alert archive / Wisconsin / Ozaukee County

Weather alerts in Ozaukee County, Wisconsin, 2023

76 weather alerts in 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Ozaukee County and its neighbors

Each county as a circle sized by its count in 2023. Tap one for its archive.

Alerts
76
Warnings
16
Watches
11
Advisories
21
Busiest month
April15 alerts
Busiest day
April 19, 20236 alerts

Over time

By month

Warning verification

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

Ozaukee County, 2023

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings5420%250%12 min
Flash flood warnings110%0

Each office's whole area, 2023

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Milwaukee, WI: tornado warnings13469%2646%16 min
NWS Milwaukee, WI: severe thunderstorm warnings1025447%15671%23 min
NWS Milwaukee, WI: flash flood warnings7271%667%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 3, 5:52 PM CSTDense Fog AdvisoryMKX11 hr
Jan 11, 4:54 AM CSTWinter Weather AdvisoryMKX4 hr
Jan 11, 5:45 PM CSTDense Fog AdvisoryMKX4 hr
Jan 18, 2:49 AM CSTWinter Weather AdvisoryMKX30 hr
Jan 27, 2:16 PM CSTWinter Weather AdvisoryMKX37 hr
Jan 28, 3:15 AM CSTWinter Storm WarningMKX25 hr
Jan 28, 8:28 PM CSTMesoscale DiscussionSPC6 hr
Jan 30, 2:14 PM CSTWind Chill AdvisoryMKX20 hr
Feb 2, 3:05 AM CSTWind Chill AdvisoryMKX32 hr
Feb 15, 2:34 AM CSTWinter Storm WatchMKX11 hr
Feb 15, 10:16 AM CSTWind AdvisoryMKX4 hr
Feb 15, 1:57 PM CSTWinter Storm WarningMKX34 hr
Feb 20, 2:53 PM CSTWinter Storm WatchMKX23 hr
Feb 21, 1:53 PM CSTWinter Storm WarningMKX46 hr
Feb 22, 3:27 PM CSTMesoscale DiscussionSPC4 hr
Feb 27, 8:36 AM CSTAreal Flood AdvisoryMKX4 hr
Feb 27, 12:44 PM CSTAreal Flood WarningMKX6 hr
Mar 8, 3:31 AM CSTWinter Storm WatchMKX11 hr
Mar 8, 2:12 PM CSTWinter Weather AdvisoryMKX43 hr
Mar 9, 3:18 AM CSTWinter Storm WarningMKX33 hr
Mar 24, 2:47 AM CDTWinter Weather AdvisoryMKX32 hr
Mar 24, 2:38 PM CDTWinter Storm WarningMKX25 hr
Mar 25, 3:47 AM CDTMesoscale DiscussionSPC4 hr
Mar 25, 8:54 AM CDTMesoscale DiscussionSPC4 hr
Mar 31, 8:49 PM CDTSpecial Weather StatementMKX41 min
Apr 4, 12:41 PM CDTFlood WatchMKX15 hr
Apr 4, 10:59 PM CDTSevere Thunderstorm WarningMKX46 min
Apr 11, 2:45 PM CDTFire Weather WatchMKX12 hr
Apr 12, 3:11 AM CDTRed Flag WarningMKX17 hr
Apr 12, 2:30 PM CDTFire Weather WatchMKX13 hr
Apr 13, 3:03 AM CDTRed Flag WarningMKX17 hr
Apr 19, 2:42 PM CDTMesoscale DiscussionSPC2 hr
Apr 19, 3:06 PM CDTSevere Thunderstorm WarningMKX39 min
Apr 19, 3:30 PM CDTAreal Flood AdvisoryMKX3 hr
Apr 19, 3:32 PM CDTSevere Thunderstorm WarningMKX43 min
Apr 19, 4:00 PM CDTFlash Flood WarningMKX3 hr
Apr 19, 4:14 PM CDTSevere Thunderstorm WarningMKX16 min
Apr 20, 2:06 PM CDTTornado WatchSPC6 hr
Apr 20, 5:23 PM CDTMesoscale DiscussionSPC97 min
May 9, 1:52 AM CDTDense Fog AdvisoryMKX7 hr
May 24, 3:25 AM CDTBeach Hazards StatementMKX28 hr
Jun 10, 3:22 AM CDTBeach Hazards StatementMKX49 hr
Jul 5, 12:49 PM CDTMesoscale DiscussionSPC116 min
Jul 5, 2:39 PM CDTSpecial Weather StatementMKX36 min
Jul 22, 3:23 PM CDTSpecial Weather StatementMKX52 min
Jul 26, 7:04 AM CDTSpecial Weather StatementMKX41 min
Jul 28, 6:27 PM CDTSevere Thunderstorm WatchSPC6 hr
Jul 28, 9:44 PM CDTMesoscale DiscussionSPC2 hr
Jul 28, 10:26 PM CDTSevere Thunderstorm Warning Considerable damage threatMKX49 min
Aug 8, 4:54 PM CDTSpecial Weather StatementMKX36 min
Aug 11, 6:42 PM CDTMesoscale DiscussionSPC63 min
Aug 11, 7:08 PM CDTSevere Thunderstorm WatchSPC5 hr
Aug 11, 9:18 PM CDTSpecial Weather StatementMKX27 min
Aug 13, 2:09 PM CDTFlood WatchMKX33 hr
Aug 13, 4:36 PM CDTBeach Hazards StatementMKX47 hr
Aug 14, 2:19 PM CDTAreal Flood AdvisoryMKX4 hr
Aug 16, 2:41 AM CDTBeach Hazards StatementMKX28 hr
Aug 18, 2:19 PM CDTBeach Hazards StatementMKX34 hr
Aug 20, 2:15 PM CDTExcessive Heat WatchMKX61 hr
Aug 22, 3:20 AM CDTExcessive Heat WarningMKX64 hr
Aug 25, 3:04 PM CDTBeach Hazards StatementMKX40 hr
Aug 28, 2:38 PM CDTBeach Hazards StatementMKX55 hr
Sep 1, 2:30 AM CDTBeach Hazards StatementMKX23 hr
Sep 4, 2:20 PM CDTBeach Hazards StatementMKX37 hr
Sep 11, 9:01 PM CDTBeach Hazards StatementMKX25 hr
Sep 19, 2:22 PM CDTBeach Hazards StatementMKX20 hr
Sep 23, 6:44 PM CDTBeach Hazards StatementMKX18 hr
Sep 26, 3:27 AM CDTBeach Hazards StatementMKX43 hr
Oct 8, 2:10 PM CDTFrost AdvisoryMKX19 hr
Oct 19, 7:00 AM CDTDense Fog AdvisoryMKX2 hr
Oct 21, 2:32 PM CDTFrost AdvisoryMKX18 hr
Oct 29, 2:43 AM CDTFreeze WarningMKX31 hr
Oct 31, 1:35 PM CDTWinter Weather AdvisoryMKX6 hr
Dec 23, 1:02 AM CSTDense Fog AdvisoryMKX10 hr
Dec 23, 11:04 AM CSTDense Fog AdvisoryMKX22 hr
Dec 30, 6:04 PM CSTWinter Weather AdvisoryMKX18 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 archive20222024

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.