Alert archive / Wisconsin / Ozaukee County

Weather alerts in Ozaukee County, Wisconsin, 2025

109 weather alerts in 2025, 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 2025. Tap one for its archive.

Alerts
109
Warnings
28
Watches
12
Advisories
40
Busiest month
August28 alerts
Busiest day
August 10, 202510 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, 2025

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings15660%0
Flash flood warnings4250%20%

Each office's whole area, 2025

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Milwaukee, WI: tornado warnings32875%1688%16 min
NWS Milwaukee, WI: severe thunderstorm warnings1466953%30584%24 min
NWS Milwaukee, WI: flash flood warnings18761%2055%138 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 18, 2:51 AM CSTCold Weather AdvisoryMKX3 days
Jan 20, 3:24 AM CSTExtreme Cold WarningMKX33 hr
Jan 21, 9:21 AM CSTCold Weather AdvisoryMKX15 hr
Jan 26, 12:19 PM CSTWind AdvisoryMKX30 hr
Jan 28, 3:03 AM CSTWind AdvisoryMKX15 hr
Feb 5, 2:10 PM CSTWind AdvisoryMKX32 hr
Feb 5, 8:19 PM CSTWinter Weather AdvisoryMKX10 hr
Feb 10, 2:09 PM CSTWinter Storm WatchMKX23 hr
Feb 11, 1:10 PM CSTWinter Storm WarningMKX38 hr
Feb 13, 1:11 PM CSTWinter Weather AdvisoryMKX65 hr
Feb 16, 2:35 AM CSTCold Weather AdvisoryMKX32 hr
Feb 17, 2:28 AM CSTCold Weather AdvisoryMKX34 hr
Feb 18, 2:25 AM CSTCold Weather AdvisoryMKX32 hr
Feb 26, 11:31 PM CSTDense Fog AdvisoryMKX5 hr
Feb 27, 12:18 PM CSTWind AdvisoryMKX33 hr
Mar 4, 2:47 PM CSTWind AdvisoryMKX33 hr
Mar 14, 2:13 PM CDTWind AdvisoryMKX27 hr
Mar 14, 10:02 PM CDTSevere Thunderstorm WatchSPC4 hr
Mar 15, 12:24 AM CDTSpecial Weather StatementMKX36 min
Mar 15, 12:30 AM CDTSevere Thunderstorm WarningMKX45 min
Mar 15, 1:11 AM CDTSevere Thunderstorm WarningMKX49 min
Mar 19, 1:47 AM CDTWind AdvisoryMKX29 hr
Mar 19, 1:29 PM CDTWinter Weather AdvisoryMKX16 hr
Apr 18, 5:53 AM CDTSevere Thunderstorm WatchSPC4 hr
Apr 18, 7:18 AM CDTSevere Thunderstorm Warning Considerable damage threatMKX57 min
Apr 18, 7:22 AM CDTMesoscale DiscussionSPC113 min
Apr 18, 8:11 AM CDTSevere Thunderstorm WarningMKX25 min
Apr 18, 8:40 AM CDTFlash Flood WarningMKX110 min
Apr 24, 3:53 AM CDTSpecial Weather StatementMKX37 min
May 13, 7:22 PM CDTDense Fog AdvisoryMKX15 hr
May 14, 8:20 PM CDTDense Fog AdvisoryMKX15 hr
May 15, 3:05 PM CDTTornado WatchSPC6 hr
May 15, 6:21 PM CDTSevere Thunderstorm WarningMKX39 min
May 15, 6:26 PM CDTSevere Thunderstorm Warning Considerable damage threatMKX79 min
May 16, 3:52 PM CDTSevere Thunderstorm WarningMKX38 min
May 16, 6:25 PM CDTSevere Thunderstorm WarningMKX18 min
May 16, 7:23 PM CDTMesoscale DiscussionSPC2 hr
May 21, 2:08 AM CDTBeach Hazards StatementMKX23 hr
May 30, 3:32 PM CDTMesoscale DiscussionSPC88 min
Jun 2, 1:43 PM CDTBeach Hazards StatementMKX32 hr
Jun 3, 1:32 PM CDTMesoscale DiscussionSPC118 min
Jun 12, 2:38 PM CDTBeach Hazards StatementMKX15 hr
Jun 20, 2:45 AM CDTHeat AdvisoryMKX4 days
Jun 20, 5:00 PM CDTBeach Hazards StatementMKX29 hr
Jun 23, 1:15 PM CDTSevere Thunderstorm WatchSPC8 hr
Jun 23, 6:09 PM CDTMesoscale DiscussionSPC96 min
Jun 23, 6:47 PM CDTSevere Thunderstorm WarningMKX58 min
Jun 29, 8:09 PM CDTAreal Flood AdvisoryMKX3 hr
Jul 2, 3:28 PM CDTMesoscale DiscussionSPC92 min
Jul 11, 7:57 PM CDTSevere Thunderstorm WarningMKX27 min
Jul 11, 8:23 PM CDTSpecial Weather StatementMKX67 min
Jul 16, 12:04 PM CDTBeach Hazards StatementMKX33 hr
Jul 16, 12:17 PM CDTTornado WatchSPC7 hr
Jul 16, 4:59 PM CDTSpecial Weather StatementMKX61 min
Jul 16, 5:33 PM CDTSevere Thunderstorm WarningMKX27 min
Jul 21, 1:34 PM CDTExtreme Heat WatchMKX22 hr
Jul 21, 2:54 PM CDTBeach Hazards StatementMKX28 hr
Jul 22, 11:48 AM CDTHeat AdvisoryMKX32 hr
Jul 27, 1:16 PM CDTHeat AdvisoryMKX31 hr
Jul 29, 2:03 PM CDTBeach Hazards StatementMKX67 hr
Aug 8, 12:18 PM CDTBeach Hazards StatementMKX33 hr
Aug 8, 1:32 PM CDTFlood WatchMKX61 hr
Aug 9, 10:03 AM CDTMesoscale DiscussionSPC87 min
Aug 9, 3:41 PM CDTSpecial Weather StatementMKX64 min
Aug 9, 4:44 PM CDTSpecial Weather StatementMKX31 min
Aug 9, 5:11 PM CDTSevere Thunderstorm WarningMKX34 min
Aug 9, 5:15 PM CDTAreal Flood AdvisoryMKX3 hr
Aug 10, 12:02 AM CDTAreal Flood AdvisoryMKX3 hr
Aug 10, 1:38 AM CDTFlash Flood WarningMKX4 hr
Aug 10, 3:32 AM CDTAreal Flood AdvisoryMKX3 hr
Aug 10, 5:16 AM CDTFlash Flood WarningMKX3 hr
Aug 10, 7:59 AM CDTFlash Flood Warning Considerable damage threatMKX3 hr
Aug 10, 9:20 AM CDTAreal Flood WarningMKX10 hr
Aug 10, 11:03 AM CDTAreal Flood WarningMKX8 hr
Aug 10, 11:42 AM CDTRiver Flood WarningMKX4 days
Aug 10, 11:42 AM CDTRiver Flood WarningMKX4 days
Aug 10, 5:36 PM CDTAreal Flood WarningMKX16 hr
Aug 12, 5:53 AM CDTSevere Thunderstorm WarningMKX41 min
Aug 12, 4:51 PM CDTMesoscale DiscussionSPC114 min
Aug 16, 11:56 AM CDTMesoscale DiscussionSPC2 hr
Aug 16, 12:00 PM CDTFlood WatchMKX20 hr
Aug 16, 12:04 PM CDTSevere Thunderstorm WarningMKX56 min
Aug 16, 1:56 PM CDTSevere Thunderstorm WatchSPC5 hr
Aug 16, 4:03 PM CDTSevere Thunderstorm WarningMKX46 min
Aug 16, 4:42 PM CDTSpecial Weather StatementMKX33 min
Aug 16, 6:26 PM CDTBeach Hazards StatementMKX48 hr
Aug 18, 12:13 PM CDTSevere Thunderstorm WatchSPC9 hr
Aug 27, 2:01 PM CDTBeach Hazards StatementMKX41 hr
Sep 11, 12:24 AM CDTDense Fog AdvisoryMKX10 hr
Sep 12, 4:02 AM CDTDense Fog AdvisoryMKX8 hr
Sep 13, 11:15 PM CDTDense Fog AdvisoryMKX10 hr
Sep 19, 3:42 AM CDTBeach Hazards StatementMKX36 hr
Sep 22, 4:19 AM CDTDense Fog AdvisoryMKX6 hr
Sep 22, 10:28 AM CDTSpecial Weather StatementMKX47 min
Sep 22, 10:33 AM CDTSpecial Weather StatementMKX27 min
Sep 27, 3:31 AM CDTDense Fog AdvisoryMKX5 hr
Oct 13, 9:43 PM CDTDense Fog AdvisoryMKX6 hr
Oct 23, 3:09 AM CDTFreeze WarningMKX30 hr
Nov 25, 1:30 AM CSTWind AdvisoryMKX41 hr
Nov 25, 2:24 PM CSTWinter Weather AdvisoryMKX28 hr
Nov 27, 3:16 AM CSTWinter Storm WatchMKX23 hr
Nov 28, 1:52 AM CSTWinter Storm WarningMKX52 hr
Nov 30, 2:23 AM CSTWinter Weather AdvisoryMKX10 hr
Dec 8, 3:16 PM CSTWinter Weather AdvisoryMKX42 hr
Dec 12, 3:44 AM CSTCold Weather AdvisoryMKX54 hr
Dec 27, 3:18 AM CSTWinter Weather AdvisoryMKX57 hr
Dec 27, 1:30 PM CSTWind AdvisoryMKX47 hr
Dec 27, 6:35 PM CSTDense Fog AdvisoryMKX17 hr
Dec 28, 11:57 AM CSTDense Fog AdvisoryMKX3 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 archive20242026

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.