Alert archive / Michigan / Saint Joseph County

Weather alerts in Saint Joseph County, Michigan, 2018

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

Saint Joseph County and its neighbors

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

Alerts
103
Warnings
25
Watches
5
Advisories
39
Busiest month
May17 alerts
Busiest day
May 3, 20186 alerts

Over time

By month

Warning verification

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

Saint Joseph County, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings8450%729%10 min
Flash flood warnings10100%0

Each office's whole area, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Northern Indiana: tornado warnings6267%633%2 min
NWS Northern Indiana: severe thunderstorm warnings933463%18741%19 min
NWS Northern Indiana: flash flood warnings9278%475%59 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, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Jan 2, 3:06 PM ESTWind Chill AdvisoryIWX16 hr
Jan 7, 3:55 AM ESTWinter Weather AdvisoryIWX31 hr
Jan 10, 10:11 AM ESTDense Fog AdvisoryIWX12 hr
Jan 11, 3:02 PM ESTWinter Weather AdvisoryIWX27 hr
Jan 12, 3:04 AM ESTMesoscale DiscussionSPC6 hr
Jan 14, 3:16 PM ESTWinter Weather AdvisoryIWX34 hr
Jan 21, 5:01 AM ESTDense Fog AdvisoryIWX26 hr
Jan 22, 10:13 PM ESTSpecial Weather StatementIWX32 min
Feb 5, 3:28 AM ESTWinter Weather AdvisoryIWX23 hr
Feb 6, 2:45 PM ESTWinter Weather AdvisoryIWX19 hr
Feb 7, 4:06 AM ESTWinter Storm WatchIWX35 hr
Feb 8, 3:38 AM ESTWinter Storm WarningIWX42 hr
Feb 9, 4:08 AM ESTMesoscale DiscussionSPC6 hr
Feb 10, 2:52 PM ESTWinter Weather AdvisoryIWX22 hr
Feb 14, 6:51 PM ESTDense Fog AdvisoryIWX27 hr
Feb 19, 1:10 AM ESTFlood WatchIWX63 hr
Feb 20, 3:19 AM ESTAreal Flood WarningIWX24 hr
Feb 20, 5:12 AM ESTRiver Flood WarningIWX20 days
Feb 20, 5:12 AM ESTRiver Flood WarningIWX14 days
Feb 20, 5:12 AM ESTRiver Flood WarningIWX16 days
Feb 20, 11:56 PM ESTAreal Flood WarningIWX48 hr
Feb 25, 1:35 AM ESTWind AdvisoryIWX8 hr
Mar 31, 4:11 AM EDTWind AdvisoryIWX15 hr
Apr 3, 5:14 PM EDTSpecial Weather StatementIWX31 min
Apr 14, 3:26 PM EDTWinter Weather AdvisoryIWX23 hr
Apr 18, 9:41 PM EDTRiver Flood WarningIWX13 hr
Apr 30, 6:21 PM EDTRed Flag WarningIWX26 hr
May 2, 6:29 PM EDTMesoscale DiscussionSPC91 min
May 2, 8:00 PM EDTSevere Thunderstorm WarningIWX45 min
May 2, 8:28 PM EDTSevere Thunderstorm WarningIWX47 min
May 2, 8:44 PM EDTSevere Thunderstorm WarningIWX46 min
May 2, 8:48 PM EDTSevere Thunderstorm WarningIWX27 min
May 2, 10:24 PM EDTSevere Thunderstorm WarningIWX51 min
May 3, 9:24 AM EDTRiver Flood WarningIWX25 hr
May 3, 9:48 PM EDTWind AdvisoryIWX18 hr
May 13, 2:58 PM EDTRiver Flood WarningIWX14 days
May 14, 3:40 AM EDTMesoscale DiscussionSPC2 hr
May 14, 5:44 AM EDTSpecial Weather StatementIWX46 min
May 14, 8:42 AM EDTAreal Flood WarningIWX3 hr
May 14, 11:41 AM EDTRiver Flood WarningIWX3 days
May 15, 8:36 AM EDTRiver Flood WarningIWX37 hr
May 22, 3:08 AM EDTDense Fog AdvisoryIWX7 hr
May 29, 5:35 PM EDTSpecial Weather StatementIWX25 min
May 31, 3:00 PM EDTMesoscale DiscussionSPC90 min
Jun 9, 4:04 PM EDTSpecial Weather StatementIWX26 min
Jun 9, 4:55 PM EDTAreal Flood AdvisoryIWX3 hr
Jun 9, 5:05 PM EDTFlash Flood WarningIWX3 hr
Jun 16, 3:34 PM EDTHeat AdvisoryIWX52 hr
Jun 22, 6:47 AM EDTAreal Flood AdvisoryIWX3 hr
Jun 22, 12:24 PM EDTAreal Flood AdvisoryIWX5 hr
Jun 27, 3:28 PM EDTExcessive Heat WatchIWX36 hr
Jun 29, 2:58 AM EDTExcessive Heat WarningIWX65 hr
Jul 1, 9:11 PM EDTSpecial Weather StatementIWX49 min
Jul 3, 2:26 PM EDTHeat AdvisoryIWX37 hr
Jul 16, 1:32 PM EDTMesoscale DiscussionSPC2 hr
Jul 20, 9:55 AM EDTSpecial Weather StatementIWX35 min
Jul 20, 1:43 PM EDTMesoscale DiscussionSPC92 min
Jul 20, 2:12 PM EDTTornado WatchSPC3 hr
Jul 20, 2:24 PM EDTSevere Thunderstorm WarningIWX51 min
Jul 20, 3:09 PM EDTSpecial Weather StatementIWX36 min
Aug 2, 7:33 PM EDTSpecial Weather StatementIWX42 min
Aug 6, 1:26 PM EDTMesoscale DiscussionSPC3 hr
Aug 6, 5:57 PM EDTSpecial Weather StatementIWX48 min
Aug 6, 8:13 PM EDTAreal Flood AdvisoryIWX3 hr
Aug 11, 4:34 AM EDTDense Fog AdvisoryIWX4 hr
Aug 17, 4:26 PM EDTAreal Flood AdvisoryIWX3 hr
Aug 18, 3:47 AM EDTDense Fog AdvisoryIWX5 hr
Aug 25, 7:54 AM EDTSpecial Weather StatementIWX21 min
Aug 28, 10:54 PM EDTMesoscale DiscussionSPC66 min
Aug 29, 10:17 AM EDTSpecial Weather StatementIWX58 min
Sep 1, 11:54 PM EDTSevere Thunderstorm WarningIWX51 min
Sep 3, 1:22 PM EDTSpecial Weather StatementIWX38 min
Sep 3, 1:40 PM EDTSpecial Weather StatementIWX50 min
Sep 3, 4:10 PM EDTSpecial Weather StatementIWX80 min
Sep 5, 6:44 PM EDTSpecial Weather StatementIWX31 min
Sep 5, 7:35 PM EDTSpecial Weather StatementIWX25 min
Sep 5, 8:17 PM EDTSpecial Weather StatementIWX43 min
Sep 5, 9:06 PM EDTSpecial Weather StatementIWX54 min
Sep 11, 2:28 AM EDTDense Fog AdvisoryIWX6 hr
Sep 14, 1:38 AM EDTDense Fog AdvisoryIWX9 hr
Sep 20, 4:16 PM EDTMesoscale DiscussionSPC89 min
Sep 20, 5:18 PM EDTSevere Thunderstorm WarningIWX28 min
Sep 20, 5:40 PM EDTAreal Flood AdvisoryIWX3 hr
Sep 25, 6:21 PM EDTMesoscale DiscussionSPC114 min
Sep 25, 8:45 PM EDTSevere Thunderstorm WatchSPC87 min
Oct 5, 9:20 PM EDTSpecial Weather StatementIWX3 hr
Oct 6, 1:04 AM EDTAreal Flood AdvisoryIWX3 hr
Oct 6, 4:30 PM EDTAreal Flood AdvisoryIWX2 hr
Oct 12, 2:55 PM EDTFrost AdvisoryIWX18 hr
Oct 15, 2:17 PM EDTFreeze WarningIWX19 hr
Oct 17, 3:02 AM EDTFreeze WarningIWX30 hr
Oct 20, 10:57 AM EDTWind AdvisoryIWX9 hr
Oct 20, 1:32 PM EDTSpecial Weather StatementIWX28 min
Nov 9, 8:35 PM ESTSpecial Weather StatementIWX115 min
Nov 9, 10:34 PM ESTSpecial Weather StatementIWX56 min
Nov 25, 3:38 AM ESTWinter Weather AdvisoryIWX33 hr
Nov 30, 1:10 AM ESTFreezing Fog AdvisoryIWX10 hr
Nov 30, 8:17 PM ESTFreezing Fog AdvisoryIWX10 hr
Dec 14, 10:08 PM ESTDense Fog AdvisoryIWX7 hr
Dec 16, 7:40 AM ESTFreezing Fog AdvisoryIWX5 hr
Dec 20, 8:41 PM ESTDense Fog AdvisoryIWX5 hr
Dec 27, 2:44 PM ESTWind AdvisoryIWX6 hr
Dec 29, 9:45 AM ESTWinter Weather AdvisoryIWX2 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.