Alert archive / Michigan / Oakland County

Weather alerts in Oakland County, Michigan, 2017

111 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Oakland County and its neighbors

Each county as a circle sized by its count in 2017. Tap one for its archive.

Alerts
111
Warnings
17
Watches
11
Advisories
31
Busiest month
August19 alerts
Busiest day
August 3, 20176 alerts

Over time

By month

Warning verification

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

Oakland County, 2017

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings9633%580%13 min
Flash flood warnings10100%0

Each office's whole area, 2017

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Detroit, MI: tornado warnings3167%450%3 min
NWS Detroit, MI: severe thunderstorm warnings553536%8976%20 min
NWS Detroit, MI: flash flood warnings40100%0

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, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Jan 3, 12:14 PM ESTDense Fog AdvisoryDTX4 hr
Jan 9, 3:19 PM ESTWinter Weather AdvisoryDTX22 hr
Jan 10, 3:44 AM ESTHigh Wind WatchDTX10 hr
Jan 10, 2:11 PM ESTHigh Wind WarningDTX13 hr
Jan 10, 5:35 PM ESTSpecial Weather StatementDTX70 min
Jan 11, 5:44 PM ESTSpecial Weather StatementDTX16 min
Jan 11, 7:05 PM ESTSpecial Weather StatementDTX55 min
Jan 12, 6:27 AM ESTFreezing Rain AdvisoryDTX6 hr
Jan 16, 3:35 AM ESTFreezing Rain AdvisoryDTX27 hr
Jan 20, 4:06 PM ESTDense Fog AdvisoryDTX20 hr
Jan 21, 3:23 PM ESTDense Fog AdvisoryDTX36 hr
Jan 30, 3:04 PM ESTWinter Weather AdvisoryDTX18 hr
Feb 7, 2:41 AM ESTDense Fog AdvisoryDTX7 hr
Feb 12, 9:31 AM ESTWind AdvisoryDTX10 hr
Feb 21, 10:37 PM ESTDense Fog AdvisoryDTX11 hr
Feb 24, 3:19 PM ESTSevere Thunderstorm WarningDTX60 min
Feb 24, 3:44 PM ESTSevere Thunderstorm WatchSPC6 hr
Feb 24, 5:56 PM ESTMesoscale DiscussionSPC94 min
Feb 28, 7:37 PM ESTSevere Thunderstorm WatchSPC8 hr
Mar 1, 7:10 AM ESTWind AdvisoryDTX16 hr
Mar 7, 11:25 AM ESTHigh Wind WatchDTX11 hr
Mar 7, 10:14 PM ESTHigh Wind WarningDTX21 hr
Mar 8, 6:56 PM ESTWind AdvisoryDTX2 hr
Mar 12, 10:22 PM EDTWinter Weather AdvisoryDTX22 hr
Mar 21, 4:52 AM EDTDense Fog AdvisoryDTX4 hr
Mar 30, 11:41 AM EDTFlood WatchDTX16 hr
Apr 6, 4:28 AM EDTWinter Storm WarningDTX252 days
Apr 6, 4:47 AM EDTWind AdvisoryDTX23 hr
Apr 10, 11:53 AM EDTSpecial Weather StatementDTX52 min
Apr 10, 12:23 PM EDTSpecial Weather StatementDTX67 min
Apr 20, 1:36 PM EDTMesoscale DiscussionSPC84 min
Apr 20, 2:08 PM EDTSevere Thunderstorm WatchSPC6 hr
Apr 20, 2:51 PM EDTSpecial Weather StatementDTX54 min
Apr 20, 4:31 PM EDTMesoscale DiscussionSPC119 min
Apr 22, 3:43 PM EDTFrost AdvisoryDTX16 hr
Apr 26, 11:26 PM EDTSevere Thunderstorm WarningDTX47 min
Apr 30, 9:32 PM EDTSpecial Weather StatementDTX88 min
May 4, 11:05 AM EDTFlood WatchDTX28 hr
May 7, 4:03 AM EDTFreeze WarningDTX28 hr
May 8, 2:16 PM EDTFreeze WarningDTX18 hr
May 18, 2:51 AM EDTWind AdvisoryDTX17 hr
May 21, 1:58 PM EDTSpecial Weather StatementDTX2 hr
May 21, 3:18 PM EDTSpecial Weather StatementDTX117 min
May 28, 1:56 PM EDTSevere Thunderstorm WatchSPC6 hr
May 28, 4:09 PM EDTMesoscale DiscussionSPC66 min
May 28, 5:46 PM EDTMesoscale DiscussionSPC59 min
May 28, 6:48 PM EDTSpecial Weather StatementDTX57 min
Jun 9, 6:54 PM EDTSpecial Weather StatementDTX51 min
Jun 17, 4:54 PM EDTMesoscale DiscussionSPC2 hr
Jun 22, 8:01 PM EDTSpecial Weather StatementDTX59 min
Jun 22, 8:35 PM EDTSevere Thunderstorm WarningDTX43 min
Jun 30, 1:56 PM EDTMesoscale DiscussionSPC2 hr
Jul 1, 1:08 PM EDTSpecial Weather StatementDTX37 min
Jul 7, 1:19 AM EDTSpecial Weather StatementDTX41 min
Jul 7, 1:24 AM EDTSevere Thunderstorm WarningDTX51 min
Jul 7, 5:15 AM EDTSpecial Weather StatementDTX45 min
Jul 7, 5:22 PM EDTSpecial Weather StatementDTX68 min
Jul 7, 7:17 PM EDTSevere Thunderstorm WarningDTX73 min
Jul 7, 9:40 PM EDTSpecial Weather StatementDTX65 min
Jul 10, 9:27 AM EDTSpecial Weather StatementDTX78 min
Jul 11, 10:05 PM EDTSpecial Weather StatementDTX40 min
Jul 12, 3:51 AM EDTFlood WatchDTX28 hr
Jul 12, 10:50 AM EDTSpecial Weather StatementDTX40 min
Jul 12, 11:53 AM EDTSpecial Weather StatementDTX67 min
Jul 13, 3:19 AM EDTMesoscale DiscussionSPC3 hr
Aug 2, 3:44 PM EDTSpecial Weather StatementDTX61 min
Aug 3, 1:36 PM EDTSevere Thunderstorm WarningDTX58 min
Aug 3, 2:32 PM EDTSpecial Weather StatementDTX28 min
Aug 3, 4:27 PM EDTSpecial Weather StatementDTX33 min
Aug 3, 5:17 PM EDTSpecial Weather StatementDTX58 min
Aug 3, 6:17 PM EDTAreal Flood AdvisoryDTX3 hr
Aug 3, 6:28 PM EDTSpecial Weather StatementDTX62 min
Aug 6, 8:40 PM EDTSpecial Weather StatementDTX35 min
Aug 11, 1:23 PM EDTSpecial Weather StatementDTX22 min
Aug 11, 2:12 PM EDTSevere Thunderstorm WarningDTX78 min
Aug 11, 4:12 PM EDTSpecial Weather StatementDTX48 min
Aug 17, 7:20 PM EDTMesoscale DiscussionSPC115 min
Aug 22, 2:31 PM EDTSpecial Weather StatementDTX44 min
Aug 28, 5:32 PM EDTAreal Flood AdvisoryDTX3 hr
Aug 28, 6:51 PM EDTFlash Flood WarningDTX3 hr
Aug 28, 9:43 PM EDTAreal Flood WarningDTX3 hr
Aug 29, 2:35 PM EDTSpecial Weather StatementDTX55 min
Aug 29, 3:05 PM EDTAreal Flood AdvisoryDTX3 hr
Aug 30, 12:10 AM EDTDense Fog AdvisoryDTX10 hr
Sep 4, 3:17 PM EDTMesoscale DiscussionSPC118 min
Sep 4, 4:32 PM EDTSevere Thunderstorm WatchSPC6 hr
Sep 4, 5:10 PM EDTSpecial Weather StatementDTX35 min
Sep 4, 5:23 PM EDTSevere Thunderstorm WarningDTX50 min
Sep 14, 3:08 AM EDTDense Fog AdvisoryDTX7 hr
Oct 7, 3:26 PM EDTWind AdvisoryDTX12 hr
Oct 7, 10:16 PM EDTSevere Thunderstorm WarningDTX27 min
Oct 7, 10:49 PM EDTSpecial Weather StatementDTX56 min
Oct 15, 11:05 AM EDTSpecial Weather StatementDTX55 min
Oct 15, 11:46 AM EDTSpecial Weather StatementDTX59 min
Dec 5, 3:57 AM ESTWind AdvisoryDTX15 hr
Dec 11, 1:29 PM ESTWinter Weather AdvisoryDTX13 hr
Dec 12, 2:05 AM ESTWinter Weather AdvisoryDTX3 hr
Dec 12, 3:48 PM ESTWinter Storm WatchDTX12 hr
Dec 15, 3:53 PM ESTSpecial Weather StatementDTX37 min
Dec 15, 5:40 PM ESTSpecial Weather StatementDTX65 min
Dec 21, 7:03 PM ESTWinter Weather AdvisoryDTX15 hr
Dec 24, 4:19 AM ESTWinter Weather AdvisoryDTX22 hr
Dec 24, 2:38 PM ESTWinter Storm WarningDTX9 hr
Dec 25, 4:24 AM ESTWinter Weather AdvisoryDTX15 hr
Dec 25, 6:49 AM ESTSpecial Weather StatementDTX56 min
Dec 25, 11:54 AM ESTSpecial Weather StatementDTX51 min
Dec 25, 12:32 PM ESTSpecial Weather StatementDTX58 min
Dec 25, 1:03 PM ESTSpecial Weather StatementDTX57 min
Dec 25, 1:32 PM ESTSpecial Weather StatementDTX58 min
Dec 26, 2:58 PM ESTWind Chill AdvisoryDTX19 hr
Dec 30, 2:45 PM ESTWind Chill AdvisoryDTX13 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 archive20162018

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.