Alert archive / Indiana / Cass County

Weather alerts in Cass County, Indiana, 2013

138 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Cass County and its neighbors

Each county as a circle sized by its count in 2013. Tap one for its archive.

Alerts
138
Warnings
39
Watches
21
Advisories
25
Busiest month
June37 alerts
Busiest day
June 1, 201310 alerts

Over time

By month

Warning verification

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

3 of 4 tornado warnings covering Cass County in 2013 had a tornado report inside them; 5 of 6 tornado reports fell inside a warning, on average 5 minutes after it went out.

Cass County, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings4325%683%5 min
Severe thunderstorm warnings12833%683%9 min
Flash flood warnings3167%0

Each office's whole area, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Northern Indiana: tornado warnings19953%3060%12 min
NWS Northern Indiana: severe thunderstorm warnings1248234%32477%20 min
NWS Northern Indiana: flash flood warnings19858%1694%124 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 13, 5:27 PM ESTMesoscale DiscussionSPC4 hr
Jan 21, 4:26 AM ESTWind Chill AdvisoryIWX31 hr
Jan 26, 4:30 PM ESTWinter Weather AdvisoryIWX12 hr
Jan 27, 4:07 AM ESTFreezing Rain AdvisoryIWX23 hr
Jan 27, 4:49 PM ESTFlood WatchIWX59 hr
Jan 28, 5:36 PM ESTDense Fog AdvisoryIWX14 hr
Jan 30, 12:05 AM ESTMesoscale DiscussionSPC85 min
Feb 1, 3:48 AM ESTWind Chill AdvisoryIWX9 hr
Feb 10, 4:17 PM ESTWind AdvisoryIWX26 hr
Feb 21, 3:18 PM ESTWinter Weather AdvisoryIWX21 hr
Feb 21, 8:46 PM ESTMesoscale DiscussionSPC4 hr
Feb 24, 4:40 PM ESTWinter Storm WatchIWX23 hr
Feb 25, 3:36 PM ESTWinter Weather AdvisoryIWX42 hr
Feb 26, 8:03 AM ESTMesoscale DiscussionSPC4 hr
Mar 4, 4:14 AM ESTWinter Storm WatchIWX12 hr
Mar 4, 4:12 PM ESTWinter Storm WarningIWX36 hr
Mar 5, 2:36 PM ESTMesoscale DiscussionSPC4 hr
Mar 18, 1:00 AM EDTFreezing Rain AdvisoryIWX13 hr
Mar 23, 4:45 AM EDTWinter Storm WatchIWX24 hr
Mar 24, 4:47 AM EDTWinter Storm WarningIWX31 hr
Mar 24, 3:37 PM EDTMesoscale DiscussionSPC4 hr
Mar 24, 7:13 PM EDTMesoscale DiscussionSPC6 hr
Apr 7, 1:42 AM EDTSpecial Weather StatementIWX63 min
Apr 10, 10:06 AM EDTRiver Flood WatchIWX30 hr
Apr 10, 1:36 PM EDTMesoscale DiscussionSPC84 min
Apr 10, 7:09 PM EDTMesoscale DiscussionSPC96 min
Apr 10, 7:52 PM EDTSevere Thunderstorm WatchSPC7 hr
Apr 10, 8:31 PM EDTAreal Flood AdvisoryIWX6 hr
Apr 10, 9:00 PM EDTMesoscale DiscussionSPC2 hr
Apr 11, 12:51 AM EDTMesoscale DiscussionSPC84 min
Apr 11, 1:39 AM EDTSpecial Weather StatementIWX51 min
Apr 11, 3:56 PM EDTRiver Flood WarningIWX8 hr
Apr 12, 7:30 AM EDTRiver Flood WarningIWX16 hr
Apr 17, 1:23 PM EDTFlood WatchIWX46 hr
Apr 17, 4:33 PM EDTTornado WatchSPC8 hr
Apr 17, 7:46 PM EDTMesoscale DiscussionSPC89 min
Apr 17, 7:52 PM EDTSpecial Weather StatementIWX38 min
Apr 17, 9:21 PM EDTMesoscale DiscussionSPC84 min
Apr 18, 3:57 AM EDTWind AdvisoryIWX16 hr
Apr 18, 8:25 AM EDTMesoscale DiscussionSPC95 min
Apr 18, 9:31 AM EDTTornado Watch PDSSPC7 hr
Apr 18, 10:17 AM EDTSevere Thunderstorm WarningIWX43 min
Apr 18, 3:23 PM EDTAreal Flood AdvisoryIWX6 hr
Apr 18, 9:50 PM EDTAreal Flood WarningIWX21 hr
Apr 18, 10:30 PM EDTRiver Flood WarningIWX38 hr
Apr 18, 11:01 PM EDTRiver Flood WarningIWX4 days
Apr 19, 11:00 AM EDTRiver Flood WarningIWX5 hr
Apr 20, 1:22 AM EDTRiver Flood WarningIWX11 hr
Apr 24, 12:23 AM EDTAreal Flood WarningIWX12 hr
Apr 24, 5:25 AM EDTRiver Flood WarningIWX40 hr
Apr 24, 8:26 AM EDTRiver Flood WarningIWX15 hr
May 11, 4:31 PM EDTSpecial Weather StatementIWX59 min
May 12, 4:01 AM EDTFrost AdvisoryIWX28 hr
May 20, 11:25 PM EDTMesoscale DiscussionSPC65 min
May 21, 12:15 AM EDTSevere Thunderstorm WatchSPC5 hr
May 27, 6:36 PM EDTSpecial Weather StatementIWX39 min
May 27, 7:24 PM EDTSpecial Weather StatementIWX51 min
May 28, 9:20 PM EDTMesoscale DiscussionSPC115 min
May 28, 9:36 PM EDTSevere Thunderstorm WatchSPC3 hr
May 28, 11:46 PM EDTMesoscale DiscussionSPC89 min
May 31, 7:19 PM EDTSevere Thunderstorm WatchSPC4 hr
May 31, 7:44 PM EDTSevere Thunderstorm WarningIWX61 min
May 31, 8:41 PM EDTSevere Thunderstorm WarningIWX49 min
May 31, 9:46 PM EDTAreal Flood AdvisoryIWX3 hr
May 31, 10:15 PM EDTAreal Flood AdvisoryIWX3 hr
May 31, 11:11 PM EDTTornado WatchSPC5 hr
May 31, 11:54 PM EDTAreal Flood AdvisoryIWX4 hr
Jun 1, 12:15 AM EDTFlash Flood WarningIWX6 hr
Jun 1, 12:42 AM EDTSevere Thunderstorm WarningIWX63 min
Jun 1, 1:27 AM EDTSevere Thunderstorm WarningIWX63 min
Jun 1, 4:59 AM EDTRiver Flood WarningIWX3 days
Jun 1, 6:11 AM EDTAreal Flood WarningIWX6 hr
Jun 11, 4:49 PM EDTMesoscale DiscussionSPC56 min
Jun 12, 11:26 AM EDTMesoscale DiscussionSPC64 min
Jun 12, 12:02 PM EDTFlash Flood WatchIWX20 hr
Jun 12, 4:38 PM EDTMesoscale DiscussionSPC97 min
Jun 12, 5:00 PM EDTSevere Thunderstorm Watch PDSSPC9 hr
Jun 12, 6:56 PM EDTMesoscale DiscussionSPC94 min
Jun 12, 9:47 PM EDTMesoscale DiscussionSPC88 min
Jun 12, 9:49 PM EDTSevere Thunderstorm WarningIWX41 min
Jun 12, 10:02 PM EDTTornado WarningIWX28 min
Jun 12, 10:28 PM EDTSevere Thunderstorm WarningIWX62 min
Jun 12, 10:47 PM EDTFlash Flood WarningIWX6 hr
Jun 12, 11:21 PM EDTRiver Flood WarningIWX3 days
Jun 13, 12:50 AM EDTMesoscale DiscussionSPC85 min
Jun 13, 5:00 AM EDTAreal Flood WarningIWX6 hr
Jun 21, 5:19 PM EDTSpecial Weather StatementIWX56 min
Jun 24, 7:14 PM EDTSevere Thunderstorm WatchSPC4 hr
Jun 24, 9:09 PM EDTSpecial Weather StatementIWX36 min
Jun 24, 9:11 PM EDTMesoscale DiscussionSPC64 min
Jun 25, 4:06 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 25, 6:49 PM EDTMesoscale DiscussionSPC56 min
Jun 25, 8:45 PM EDTSevere Thunderstorm WarningIWX45 min
Jun 25, 10:20 PM EDTMesoscale DiscussionSPC85 min
Jun 26, 9:25 AM EDTFlash Flood WatchIWX10 hr
Jun 27, 5:15 PM EDTSevere Thunderstorm WarningIWX45 min
Jun 28, 1:17 PM EDTSpecial Weather StatementIWX28 min
Jun 28, 1:36 PM EDTMesoscale DiscussionSPC54 min
Jun 28, 1:41 PM EDTSpecial Weather StatementIWX34 min
Jul 9, 2:33 PM EDTMesoscale DiscussionSPC87 min
Jul 10, 8:57 AM EDTMesoscale DiscussionSPC3 hr
Jul 10, 11:53 AM EDTMesoscale DiscussionSPC67 min
Jul 10, 1:01 PM EDTSpecial Weather StatementIWX29 min
Jul 10, 1:23 PM EDTSevere Thunderstorm WarningIWX52 min
Jul 10, 1:50 PM EDTFlash Flood WarningIWX115 min
Jul 17, 3:46 PM EDTHeat AdvisoryIWX52 hr
Aug 2, 3:24 PM EDTMesoscale DiscussionSPC66 min
Aug 2, 11:02 PM EDTAreal Flood AdvisoryIWX3 hr
Aug 3, 12:02 AM EDTSpecial Weather StatementIWX58 min
Aug 7, 8:52 AM EDTMesoscale DiscussionSPC113 min
Aug 7, 2:46 PM EDTMesoscale DiscussionSPC119 min
Aug 7, 8:52 PM EDTSpecial Weather StatementIWX23 min
Aug 23, 2:51 AM EDTDense Fog AdvisoryIWX6 hr
Aug 29, 4:08 AM EDTDense Fog AdvisoryIWX5 hr
Sep 19, 3:52 PM EDTSpecial Weather StatementIWX38 min
Oct 5, 1:29 PM EDTMesoscale DiscussionSPC2 hr
Oct 5, 4:18 PM EDTMesoscale DiscussionSPC117 min
Oct 5, 5:23 PM EDTSpecial Weather StatementIWX22 min
Oct 21, 4:28 AM EDTFreeze WatchIWX11 hr
Oct 21, 3:33 PM EDTFreeze WarningIWX17 hr
Nov 16, 3:31 PM ESTWind AdvisoryIWX13 hr
Nov 17, 4:08 AM ESTHigh Wind WarningIWX20 hr
Nov 17, 11:01 AM ESTMesoscale DiscussionSPC119 min
Nov 17, 11:20 AM ESTTornado Watch PDSSPC9 hr
Nov 17, 12:20 PM ESTSpecial Weather StatementIWX25 min
Nov 17, 2:13 PM ESTMesoscale DiscussionSPC77 min
Nov 17, 2:33 PM ESTSevere Thunderstorm WarningIWX42 min
Nov 17, 2:49 PM ESTTornado WarningIWX26 min
Nov 17, 3:07 PM ESTTornado WarningIWX23 min
Nov 17, 3:14 PM ESTSevere Thunderstorm WarningIWX46 min
Nov 17, 3:19 PM ESTTornado WarningIWX26 min
Dec 8, 6:18 PM ESTFreezing Rain AdvisoryIWX9 hr
Dec 12, 12:29 AM ESTWind Chill AdvisoryIWX11 hr
Dec 12, 7:26 PM ESTWinter Weather AdvisoryIWX48 hr
Dec 13, 11:38 AM ESTWinter Storm WarningIWX31 hr
Dec 19, 3:37 PM ESTFlood WatchIWX60 hr
Dec 21, 6:04 PM ESTAreal Flood WarningIWX24 hr
Dec 29, 1:15 PM ESTFreezing Rain AdvisoryIWX7 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 archive20122014

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.