Alert archive / Wisconsin / Milwaukee County

Weather alerts in Milwaukee County, Wisconsin, 2015

90 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Milwaukee County and its neighbors

Each county as a circle sized by its count in 2015. Tap one for its archive.

Alerts
90
Warnings
15
Watches
13
Advisories
31
Busiest month
July15 alerts
Busiest day
July 18, 20157 alerts

Over time

By month

Warning verification

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

Milwaukee County, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings9544%1675%24 min
Flash flood warnings00

Each office's whole area, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Milwaukee, WI: tornado warnings9278%729%9 min
NWS Milwaukee, WI: severe thunderstorm warnings744046%19473%24 min
NWS Milwaukee, WI: flash flood warnings6267%743%77 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 2, 3:14 PM CSTWinter Weather AdvisoryMKX25 hr
Jan 4, 3:30 AM CSTWind Chill AdvisoryMKX33 hr
Jan 6, 2:59 AM CSTWind Chill AdvisoryMKX57 hr
Jan 7, 1:17 PM CSTWinter Weather AdvisoryMKX38 hr
Jan 8, 2:12 PM CSTWind Chill AdvisoryMKX44 hr
Jan 30, 2:49 PM CSTWinter Storm WatchMKX13 hr
Jan 31, 4:17 AM CSTWinter Storm WarningMKX47 hr
Feb 3, 3:37 AM CSTWinter Weather AdvisoryMKX17 hr
Feb 13, 1:58 PM CSTWind Chill AdvisoryMKX43 hr
Feb 18, 11:32 AM CSTWind Chill AdvisoryMKX24 hr
Feb 19, 3:00 PM CSTWind Chill AdvisoryMKX18 hr
Feb 22, 3:12 AM CSTWind Chill AdvisoryMKX31 hr
Feb 26, 1:47 AM CSTLake Effect Snow AdvisoryMKX8 hr
Mar 2, 4:07 AM CSTWinter Weather AdvisoryMKX34 hr
Mar 10, 2:55 AM CDTDense Fog AdvisoryMKX9 hr
Apr 8, 11:55 PM CDTDense Fog AdvisoryMKX7 hr
Apr 9, 12:52 PM CDTRiver Flood WarningMKX9 hr
Apr 9, 1:48 PM CDTTornado WatchSPC9 hr
Apr 9, 5:28 PM CDTSpecial Weather StatementMKX32 min
Apr 9, 7:43 PM CDTSevere Thunderstorm WarningMKX32 min
Apr 9, 8:14 PM CDTSevere Thunderstorm WarningMKX31 min
Apr 9, 8:28 PM CDTAreal Flood AdvisoryMKX2 hr
Apr 9, 10:35 PM CDTWind AdvisoryMKX5 hr
Apr 10, 4:23 AM CDTRiver Flood WarningMKX18 hr
May 10, 4:40 PM CDTDense Fog AdvisoryMKX16 hr
May 12, 3:36 AM CDTFrost AdvisoryMKX27 hr
May 16, 8:14 PM CDTDense Fog AdvisoryMKX14 hr
May 17, 4:40 PM CDTSpecial Weather StatementMKX35 min
May 26, 11:22 AM CDTMesoscale DiscussionSPC113 min
May 30, 3:57 AM CDTBeach Hazards StatementMKX41 hr
Jun 8, 5:54 PM CDTSpecial Weather StatementMKX51 min
Jun 11, 3:12 PM CDTFlood WatchMKX11 hr
Jun 14, 9:13 PM CDTDense Fog AdvisoryMKX6 hr
Jun 22, 9:14 AM CDTMesoscale DiscussionSPC61 min
Jun 22, 9:39 AM CDTSevere Thunderstorm WatchSPC3 hr
Jun 22, 10:38 AM CDTSevere Thunderstorm WarningMKX53 min
Jun 22, 11:00 AM CDTMesoscale DiscussionSPC2 hr
Jul 7, 12:03 AM CDTSpecial Weather StatementMKX57 min
Jul 7, 4:08 AM CDTBeach Hazards StatementMKX15 hr
Jul 13, 4:14 AM CDTSevere Thunderstorm WatchSPC6 hr
Jul 13, 4:52 AM CDTSevere Thunderstorm WarningMKX38 min
Jul 13, 3:11 PM CDTSevere Thunderstorm WatchSPC6 hr
Jul 13, 8:48 PM CDTSpecial Weather StatementMKX27 min
Jul 14, 4:20 AM CDTBeach Hazards StatementMKX24 hr
Jul 17, 2:16 PM CDTHeat AdvisoryMKX21 hr
Jul 18, 3:56 AM CDTSevere Thunderstorm WatchSPC4 hr
Jul 18, 5:47 AM CDTSpecial Weather StatementMKX58 min
Jul 18, 12:31 PM CDTMesoscale DiscussionSPC119 min
Jul 18, 1:31 PM CDTTornado WatchSPC5 hr
Jul 18, 2:40 PM CDTAreal Flood AdvisoryMKX2 hr
Jul 18, 2:55 PM CDTSevere Thunderstorm WarningMKX35 min
Jul 18, 3:22 PM CDTSevere Thunderstorm WarningMKX38 min
Aug 2, 2:00 PM CDTMesoscale DiscussionSPC2 hr
Aug 2, 2:59 PM CDTSevere Thunderstorm WatchSPC7 hr
Aug 2, 7:53 PM CDTSevere Thunderstorm WarningMKX48 min
Aug 2, 8:02 PM CDTMesoscale DiscussionSPC118 min
Aug 10, 11:27 AM CDTSevere Thunderstorm WarningMKX33 min
Aug 10, 12:07 PM CDTSevere Thunderstorm WarningMKX23 min
Aug 10, 3:04 PM CDTSpecial Weather StatementMKX56 min
Aug 14, 7:16 PM CDTSpecial Weather StatementMKX29 min
Aug 17, 4:00 PM CDTSpecial Weather StatementMKX30 min
Sep 7, 3:35 AM CDTSpecial Weather StatementMKX40 min
Sep 8, 10:19 AM CDTSpecial Weather StatementMKX56 min
Sep 8, 11:12 AM CDTSpecial Weather StatementMKX33 min
Sep 8, 11:31 AM CDTAreal Flood AdvisoryMKX3 hr
Sep 10, 4:49 PM CDTSpecial Weather StatementMKX26 min
Sep 11, 3:45 AM CDTBeach Hazards StatementMKX42 hr
Sep 14, 9:19 PM CDTBeach Hazards StatementMKX24 hr
Sep 18, 3:51 AM CDTFlash Flood WatchMKX23 hr
Sep 26, 9:14 PM CDTDense Fog AdvisoryMKX9 hr
Oct 15, 3:00 PM CDTFreeze WatchMKX12 hr
Oct 15, 4:32 PM CDTSpecial Weather StatementMKX28 min
Oct 16, 3:04 AM CDTFreeze WarningMKX30 hr
Nov 5, 11:34 PM CSTSpecial Weather StatementMKX41 min
Nov 10, 3:10 PM CSTWind AdvisoryMKX51 hr
Nov 17, 5:49 PM CSTAreal Flood AdvisoryMKX3 hr
Nov 19, 3:29 AM CSTWinter Storm WatchMKX25 hr
Nov 19, 9:01 AM CSTWind AdvisoryMKX9 hr
Nov 20, 4:12 AM CSTWinter Storm WarningMKX35 hr
Dec 6, 9:14 PM CSTDense Fog AdvisoryMKX9 hr
Dec 10, 11:16 AM CSTSpecial Weather StatementMKX14 min
Dec 12, 12:11 PM CSTDense Fog AdvisoryMKX21 hr
Dec 23, 3:49 AM CSTWind AdvisoryMKX26 hr
Dec 23, 9:41 AM CSTMesoscale DiscussionSPC2 hr
Dec 23, 7:10 PM CSTSpecial Weather StatementMKX35 min
Dec 26, 3:13 PM CSTWinter Storm WatchMKX25 hr
Dec 27, 3:51 PM CSTWinter Storm WarningMKX38 hr
Dec 27, 8:39 PM CSTLakeshore Flood AdvisoryMKX27 hr
Dec 28, 12:13 PM CSTMesoscale DiscussionSPC5 hr
Dec 28, 6:00 PM CSTMesoscale DiscussionSPC5 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 archive20142016

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.