Alert archive / Michigan / Ingham County

Weather alerts in Ingham County, Michigan, 2015

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

Ingham County and its neighbors

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

Alerts
138
Warnings
15
Watches
14
Advisories
61
Busiest month
June21 alerts
Busiest day
June 23, 20159 alerts

Over time

By month

Warning verification

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

Ingham County, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings4175%250%6 min
Flash flood warnings00

Each office's whole area, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Grand Rapids, MI: tornado warnings20100%20%
NWS Grand Rapids, MI: severe thunderstorm warnings623347%9066%26 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, 3:18 PM ESTWinter Weather AdvisoryGRR4 days
Jan 4, 3:47 PM ESTWind Chill AdvisoryGRR20 hr
Jan 7, 3:34 AM ESTWind Chill AdvisoryGRR31 hr
Jan 7, 3:53 PM ESTWinter Weather AdvisoryGRR48 hr
Jan 9, 10:04 PM ESTWind Chill AdvisoryGRR13 hr
Jan 21, 4:29 AM ESTWinter Weather AdvisoryGRR6 hr
Jan 28, 3:45 AM ESTWinter Weather AdvisoryGRR35 hr
Jan 31, 3:10 AM ESTWinter Weather AdvisoryGRR48 hr
Jan 31, 3:22 PM ESTWinter Storm WarningGRR36 hr
Feb 1, 2:35 PM ESTMesoscale DiscussionSPC6 hr
Feb 3, 2:37 PM ESTWinter Weather AdvisoryGRR19 hr
Feb 11, 3:53 PM ESTWind Chill AdvisoryGRR21 hr
Feb 13, 11:47 AM ESTWinter Weather AdvisoryGRR32 hr
Feb 14, 7:45 PM ESTWind Chill WarningGRR16 hr
Feb 15, 11:36 AM ESTWind Chill AdvisoryGRR22 hr
Feb 18, 12:28 PM ESTWind Chill WarningGRR23 hr
Feb 18, 12:28 PM ESTWind Chill AdvisoryGRR46 hr
Feb 22, 3:11 AM ESTWind Chill AdvisoryGRR32 hr
Feb 23, 3:22 PM ESTWinter Weather AdvisoryGRR32 hr
Feb 24, 9:53 PM ESTSpecial Weather StatementGRR52 min
Mar 2, 3:57 PM ESTWinter Weather AdvisoryGRR27 hr
Mar 10, 11:19 AM EDTRiver Flood AdvisoryGRR8 days
Mar 11, 8:44 AM EDTDense Fog AdvisoryGRR2 hr
Mar 13, 11:56 AM EDTRiver Flood AdvisoryGRR4 days
Mar 13, 11:56 AM EDTRiver Flood AdvisoryGRR4 days
Mar 14, 1:00 AM EDTDense Fog AdvisoryGRR6 hr
Apr 3, 2:51 AM EDTDense Fog AdvisoryGRR4 hr
Apr 9, 4:01 AM EDTSpecial Weather StatementGRR89 min
Apr 9, 10:40 AM EDTRiver Flood AdvisoryGRR3 days
Apr 9, 2:37 PM EDTAreal Flood AdvisoryGRR45 hr
Apr 9, 3:55 PM EDTWind AdvisoryGRR23 hr
Apr 9, 6:20 PM EDTMesoscale DiscussionSPC85 min
Apr 9, 9:27 PM EDTMesoscale DiscussionSPC93 min
Apr 9, 9:55 PM EDTSevere Thunderstorm WatchSPC5 hr
Apr 10, 12:56 AM EDTMesoscale DiscussionSPC94 min
Apr 10, 2:54 AM EDTMesoscale DiscussionSPC66 min
Apr 10, 5:17 PM EDTSpecial Weather StatementGRR118 min
May 8, 5:13 PM EDTSevere Thunderstorm WarningGRR31 min
May 11, 6:30 AM EDTDense Fog AdvisoryGRR4 hr
May 11, 11:21 AM EDTRiver Flood AdvisoryGRR36 hr
May 11, 12:48 PM EDTMesoscale DiscussionSPC2 hr
May 11, 1:14 PM EDTTornado WatchSPC7 hr
May 13, 3:21 PM EDTFrost AdvisoryGRR17 hr
May 19, 3:39 PM EDTFrost AdvisoryGRR16 hr
May 22, 3:41 PM EDTFrost AdvisoryGRR16 hr
May 25, 3:59 PM EDTSpecial Weather StatementGRR61 min
May 25, 5:25 PM EDTSpecial Weather StatementGRR35 min
May 26, 3:01 PM EDTSevere Thunderstorm WatchSPC6 hr
May 26, 4:41 PM EDTMesoscale DiscussionSPC2 hr
May 26, 4:53 PM EDTMesoscale DiscussionSPC2 hr
May 27, 12:05 PM EDTSpecial Weather StatementGRR115 min
May 27, 12:09 PM EDTMesoscale DiscussionSPC96 min
May 30, 7:04 PM EDTAreal Flood AdvisoryGRR24 hr
Jun 8, 5:48 PM EDTSpecial Weather StatementGRR42 min
Jun 14, 9:59 AM EDTRiver Flood AdvisoryGRR4 days
Jun 15, 6:24 AM EDTDense Fog AdvisoryGRR3 hr
Jun 15, 10:43 AM EDTFlash Flood WatchGRR12 hr
Jun 22, 12:00 PM EDTMesoscale DiscussionSPC2 hr
Jun 22, 1:23 PM EDTSevere Thunderstorm WatchSPC4 hr
Jun 22, 3:04 PM EDTSevere Thunderstorm WarningGRR41 min
Jun 22, 8:31 PM EDTMesoscale DiscussionSPC59 min
Jun 22, 9:17 PM EDTTornado WatchSPC6 hr
Jun 22, 11:00 PM EDTMesoscale DiscussionSPC60 min
Jun 22, 11:31 PM EDTSevere Thunderstorm WarningGRR44 min
Jun 22, 11:58 PM EDTAreal Flood WarningGRR12 hr
Jun 23, 12:03 AM EDTAreal Flood AdvisoryGRR12 hr
Jun 23, 1:35 AM EDTRiver Flood AdvisoryGRR39 hr
Jun 23, 3:49 AM EDTRiver Flood AdvisoryGRR53 hr
Jun 23, 3:49 AM EDTRiver Flood AdvisoryGRR3 days
Jun 24, 12:43 AM EDTRiver Flood WarningGRR11 hr
Jun 24, 11:39 AM EDTRiver Flood WarningGRR5 hr
Jun 24, 4:23 PM EDTRiver Flood AdvisoryGRR6 days
Jun 24, 6:38 PM EDTRiver Flood AdvisoryGRR41 hr
Jun 27, 4:09 PM EDTAreal Flood AdvisoryGRR12 hr
Jun 30, 11:05 PM EDTRiver Flood AdvisoryGRR70 hr
Jul 7, 11:54 PM EDTRiver Flood AdvisoryGRR44 hr
Jul 14, 1:55 AM EDTAreal Flood AdvisoryGRR12 hr
Jul 17, 3:20 PM EDTHeat AdvisoryGRR22 hr
Jul 18, 10:40 AM EDTSpecial Weather StatementGRR95 min
Jul 18, 4:59 PM EDTTornado WatchSPC5 hr
Jul 18, 7:31 PM EDTSpecial Weather StatementGRR119 min
Jul 25, 3:21 PM EDTMesoscale DiscussionSPC114 min
Aug 2, 2:56 PM EDTMesoscale DiscussionSPC64 min
Aug 2, 3:00 PM EDTMesoscale DiscussionSPC2 hr
Aug 2, 3:59 PM EDTSevere Thunderstorm WatchSPC7 hr
Aug 2, 6:08 PM EDTMesoscale DiscussionSPC97 min
Aug 2, 6:27 PM EDTSevere Thunderstorm WatchSPC6 hr
Aug 2, 7:15 PM EDTSpecial Weather StatementGRR2 hr
Aug 2, 9:02 PM EDTMesoscale DiscussionSPC118 min
Aug 10, 12:11 PM EDTAreal Flood AdvisoryGRR12 hr
Aug 11, 5:35 AM EDTRiver Flood AdvisoryGRR26 hr
Aug 17, 3:00 PM EDTSpecial Weather StatementGRR2 hr
Aug 19, 2:34 PM EDTMesoscale DiscussionSPC116 min
Aug 23, 1:12 PM EDTMesoscale DiscussionSPC93 min
Aug 23, 1:59 PM EDTSpecial Weather StatementGRR2 hr
Aug 23, 4:08 PM EDTSpecial Weather StatementGRR67 min
Aug 31, 1:16 AM EDTDense Fog AdvisoryGRR9 hr
Sep 3, 11:34 AM EDTSpecial Weather StatementGRR56 min
Sep 3, 3:54 PM EDTSevere Thunderstorm WarningGRR51 min
Sep 3, 4:58 PM EDTAreal Flood AdvisoryGRR2 hr
Sep 3, 5:04 PM EDTSpecial Weather StatementGRR41 min
Sep 4, 12:48 AM EDTDense Fog AdvisoryGRR9 hr
Sep 5, 2:57 AM EDTDense Fog AdvisoryGRR9 hr
Sep 7, 5:40 PM EDTSpecial Weather StatementGRR65 min
Sep 7, 6:15 PM EDTAreal Flood AdvisoryGRR6 hr
Sep 7, 8:40 PM EDTRiver Flood AdvisoryGRR65 hr
Sep 8, 1:07 PM EDTMesoscale DiscussionSPC2 hr
Sep 8, 3:59 PM EDTMesoscale DiscussionSPC91 min
Oct 15, 3:42 PM EDTFreeze WatchGRR23 hr
Oct 16, 10:44 AM EDTFreeze WatchGRR28 hr
Oct 16, 2:59 PM EDTFreeze WarningGRR19 hr
Oct 17, 2:30 PM EDTFreeze WarningGRR19 hr
Oct 24, 2:36 PM EDTSpecial Weather StatementGRR84 min
Oct 24, 3:09 PM EDTMesoscale DiscussionSPC3 hr
Oct 28, 9:33 PM EDTSpecial Weather StatementGRR117 min
Nov 6, 5:02 AM ESTSpecial Weather StatementGRR118 min
Nov 11, 4:49 AM ESTHigh Wind WatchGRR11 hr
Nov 11, 3:26 PM ESTHigh Wind WarningGRR24 hr
Nov 11, 3:26 PM ESTWind AdvisoryGRR36 hr
Nov 11, 11:28 PM ESTSpecial Weather StatementGRR107 min
Nov 18, 4:05 PM ESTSpecial Weather StatementGRR3 hr
Nov 20, 3:52 AM ESTWinter Storm WatchGRR12 hr
Nov 20, 3:34 PM ESTWinter Weather AdvisoryGRR36 hr
Nov 21, 9:11 AM ESTWinter Storm WarningGRR19 hr
Nov 21, 9:36 AM ESTMesoscale DiscussionSPC5 hr
Nov 26, 1:28 PM ESTRiver Flood AdvisoryGRR5 days
Dec 5, 12:09 AM ESTFreezing Fog AdvisoryGRR12 hr
Dec 6, 9:53 PM ESTDense Fog AdvisoryGRR12 hr
Dec 7, 6:34 PM ESTDense Fog AdvisoryGRR9 hr
Dec 14, 12:24 PM ESTSpecial Weather StatementGRR51 min
Dec 14, 1:02 PM ESTSpecial Weather StatementGRR58 min
Dec 23, 3:53 AM ESTWind AdvisoryGRR30 hr
Dec 23, 4:24 PM ESTSpecial Weather StatementGRR2 hr
Dec 26, 12:10 PM ESTRiver Flood AdvisoryGRR36 hr
Dec 27, 3:42 AM ESTWinter Storm WatchGRR12 hr
Dec 27, 3:53 PM ESTWinter Storm WarningGRR35 hr
Dec 28, 12:04 PM ESTMesoscale DiscussionSPC6 hr
Dec 30, 2:11 PM ESTRiver Flood AdvisoryGRR29 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.