Alert archive / Indiana / DeKalb County

Weather alerts in DeKalb County, Indiana, 2015

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

DeKalb County and its neighbors

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

Alerts
127
Warnings
28
Watches
18
Advisories
38
Busiest month
June31 alerts
Busiest day
June 18, 20156 alerts

Over time

By month

Warning verification

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

DeKalb County, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings10730%6100%16 min
Flash flood warnings00

Each office's whole area, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Northern Indiana: tornado warnings20100%20%
NWS Northern Indiana: severe thunderstorm warnings1077134%25756%20 min
NWS Northern Indiana: flash flood warnings17571%1889%70 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, 3:59 PM ESTWinter Weather AdvisoryIWX24 hr
Jan 4, 3:41 PM ESTWinter Storm WatchIWX12 hr
Jan 6, 4:14 AM ESTWind Chill WarningIWX56 hr
Jan 6, 4:14 AM ESTWind Chill AdvisoryIWX36 hr
Jan 7, 4:00 PM ESTWinter Weather AdvisoryIWX48 hr
Jan 9, 4:00 AM ESTWind Chill AdvisoryIWX31 hr
Jan 21, 4:50 AM ESTWinter Weather AdvisoryIWX6 hr
Jan 28, 3:51 PM ESTFreezing Rain AdvisoryIWX17 hr
Jan 30, 11:35 AM ESTWinter Storm WatchIWX20 hr
Jan 31, 4:08 AM ESTWinter Storm WarningIWX50 hr
Feb 1, 8:43 AM ESTMesoscale DiscussionSPC6 hr
Feb 1, 2:35 PM ESTMesoscale DiscussionSPC6 hr
Feb 4, 3:53 AM ESTWinter Weather AdvisoryIWX17 hr
Feb 13, 3:49 PM ESTWinter Weather AdvisoryIWX33 hr
Feb 14, 4:07 AM ESTWind Chill AdvisoryIWX31 hr
Feb 15, 3:52 PM ESTWind Chill AdvisoryIWX18 hr
Feb 18, 3:56 AM ESTWind Chill AdvisoryIWX55 hr
Feb 18, 3:56 AM ESTWinter Weather AdvisoryIWX39 hr
Feb 22, 4:05 AM ESTWind Chill AdvisoryIWX29 hr
Feb 22, 12:20 PM ESTSpecial Weather StatementIWX55 min
Feb 23, 7:55 PM ESTWind Chill AdvisoryIWX14 hr
Mar 2, 3:02 PM ESTWinter Weather AdvisoryIWX25 hr
Mar 10, 6:47 PM EDTDense Fog AdvisoryIWX18 hr
Mar 14, 12:18 AM EDTDense Fog AdvisoryIWX9 hr
Apr 2, 7:27 AM EDTSpecial Weather StatementIWX33 min
Apr 2, 11:27 AM EDTSpecial Weather StatementIWX63 min
Apr 3, 3:09 AM EDTDense Fog AdvisoryIWX7 hr
Apr 9, 9:55 PM EDTSevere Thunderstorm WatchSPC5 hr
Apr 10, 3:56 AM EDTWind AdvisoryIWX16 hr
Apr 10, 7:57 PM EDTSpecial Weather StatementIWX63 min
Apr 15, 11:54 AM EDTRed Flag WarningIWX8 hr
Apr 21, 3:50 AM EDTWind AdvisoryIWX16 hr
Apr 22, 3:39 PM EDTFreeze WarningIWX17 hr
Apr 23, 2:52 PM EDTFreeze WarningIWX18 hr
May 6, 5:31 AM EDTDense Fog AdvisoryIWX4 hr
May 11, 12:48 PM EDTMesoscale DiscussionSPC2 hr
May 11, 1:14 PM EDTTornado WatchSPC7 hr
May 11, 1:41 PM EDTSevere Thunderstorm WarningIWX34 min
May 26, 1:24 PM EDTMesoscale DiscussionSPC2 hr
May 26, 2:23 PM EDTSevere Thunderstorm WatchSPC4 hr
May 27, 12:09 PM EDTMesoscale DiscussionSPC96 min
May 27, 1:08 PM EDTSevere Thunderstorm WatchSPC6 hr
May 27, 1:27 PM EDTSevere Thunderstorm WarningIWX33 min
May 27, 1:59 PM EDTSevere Thunderstorm WarningIWX46 min
May 27, 3:26 PM EDTMesoscale DiscussionSPC2 hr
May 30, 2:18 PM EDTFlood WatchIWX23 hr
May 30, 7:23 PM EDTMesoscale DiscussionSPC67 min
Jun 8, 12:22 AM EDTSpecial Weather StatementIWX38 min
Jun 10, 4:51 PM EDTMesoscale DiscussionSPC114 min
Jun 10, 9:39 PM EDTSevere Thunderstorm WarningIWX36 min
Jun 10, 9:59 PM EDTAreal Flood AdvisoryIWX3 hr
Jun 11, 4:52 PM EDTMesoscale DiscussionSPC113 min
Jun 13, 6:37 PM EDTSevere Thunderstorm WarningIWX38 min
Jun 14, 1:20 PM EDTMesoscale DiscussionSPC115 min
Jun 14, 1:46 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 14, 4:14 PM EDTMesoscale DiscussionSPC2 hr
Jun 15, 11:48 AM EDTFlash Flood WatchIWX14 hr
Jun 15, 3:28 PM EDTSpecial Weather StatementIWX47 min
Jun 15, 4:02 PM EDTSevere Thunderstorm WarningIWX43 min
Jun 15, 11:00 PM EDTRiver Flood WarningIWX8 days
Jun 18, 3:28 PM EDTMesoscale DiscussionSPC2 hr
Jun 18, 4:26 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 18, 4:57 PM EDTAreal Flood AdvisoryIWX3 hr
Jun 18, 5:31 PM EDTSpecial Weather StatementIWX29 min
Jun 18, 5:40 PM EDTSevere Thunderstorm WarningIWX37 min
Jun 18, 6:02 PM EDTAreal Flood AdvisoryIWX3 hr
Jun 22, 12:00 PM EDTMesoscale DiscussionSPC2 hr
Jun 22, 3:09 PM EDTMesoscale DiscussionSPC96 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 25, 5:51 PM EDTSevere Thunderstorm WarningIWX39 min
Jun 25, 6:31 PM EDTSpecial Weather StatementIWX44 min
Jun 27, 9:07 AM EDTAreal Flood WarningIWX3 hr
Jun 27, 11:58 AM EDTAreal Flood WarningIWX6 hr
Jun 27, 2:31 PM EDTAreal Flood WarningIWX6 hr
Jun 27, 3:48 PM EDTRiver Flood WarningIWX8 days
Jun 27, 4:16 PM EDTAreal Flood WarningIWX45 hr
Jul 8, 3:35 AM EDTFlood WatchIWX27 hr
Jul 13, 9:43 AM EDTSpecial Weather StatementIWX47 min
Jul 13, 9:23 PM EDTAreal Flood AdvisoryIWX3 hr
Jul 13, 11:22 PM EDTMesoscale DiscussionSPC53 min
Jul 17, 3:20 PM EDTHeat AdvisoryIWX29 hr
Jul 17, 5:58 PM EDTSpecial Weather StatementIWX47 min
Jul 17, 6:24 PM EDTAreal Flood AdvisoryIWX3 hr
Jul 17, 6:54 PM EDTMesoscale DiscussionSPC3 hr
Jul 18, 1:26 PM EDTMesoscale DiscussionSPC2 hr
Jul 18, 4:21 PM EDTMesoscale DiscussionSPC84 min
Jul 18, 4:59 PM EDTTornado WatchSPC5 hr
Jul 18, 6:43 PM EDTMesoscale DiscussionSPC92 min
Jul 18, 7:57 PM EDTSevere Thunderstorm WarningIWX63 min
Jul 18, 8:03 PM EDTMesoscale DiscussionSPC57 min
Jul 19, 12:06 AM EDTRiver Flood WarningIWX7 days
Jul 25, 5:52 PM EDTMesoscale DiscussionSPC2 hr
Aug 2, 9:30 PM EDTSevere Thunderstorm WatchSPC5 hr
Aug 14, 11:25 PM EDTSevere Thunderstorm WarningIWX27 min
Aug 23, 1:12 PM EDTMesoscale DiscussionSPC93 min
Aug 23, 4:08 PM EDTSpecial Weather StatementIWX22 min
Aug 23, 4:35 PM EDTSpecial Weather StatementIWX55 min
Aug 31, 12:52 AM EDTDense Fog AdvisoryIWX8 hr
Oct 7, 3:40 AM EDTDense Fog AdvisoryIWX6 hr
Oct 15, 3:39 PM EDTFreeze WatchIWX24 hr
Oct 15, 8:45 PM EDTSpecial Weather StatementIWX60 min
Oct 16, 4:01 AM EDTFreeze WatchIWX36 hr
Oct 16, 3:12 PM EDTFreeze WarningIWX18 hr
Oct 17, 3:47 PM EDTFreeze WarningIWX17 hr
Oct 19, 12:48 PM EDTRed Flag WarningIWX7 hr
Oct 24, 3:09 PM EDTMesoscale DiscussionSPC3 hr
Nov 6, 6:13 AM ESTSpecial Weather StatementIWX32 min
Nov 11, 4:05 AM ESTHigh Wind WatchIWX11 hr
Nov 11, 3:27 PM ESTHigh Wind WarningIWX22 hr
Nov 12, 1:54 PM ESTWind AdvisoryIWX7 hr
Nov 20, 4:03 PM ESTWinter Weather AdvisoryIWX30 hr
Nov 21, 9:19 AM ESTWinter Storm WarningIWX16 hr
Nov 21, 9:36 AM ESTMesoscale DiscussionSPC5 hr
Nov 24, 6:15 AM ESTFreezing Fog AdvisoryIWX4 hr
Dec 4, 10:37 PM ESTFreezing Fog AdvisoryIWX13 hr
Dec 5, 6:45 PM ESTFreezing Fog AdvisoryIWX15 hr
Dec 7, 3:40 AM ESTDense Fog AdvisoryIWX8 hr
Dec 23, 2:55 PM ESTMesoscale DiscussionSPC95 min
Dec 23, 3:47 PM ESTWind AdvisoryIWX12 hr
Dec 23, 4:00 PM ESTSpecial Weather StatementIWX30 min
Dec 25, 3:52 PM ESTFlash Flood WatchIWX3 days
Dec 27, 4:13 PM ESTWind AdvisoryIWX29 hr
Dec 27, 4:13 PM ESTFreezing Rain AdvisoryIWX27 hr
Dec 28, 12:04 PM ESTMesoscale DiscussionSPC6 hr
Dec 30, 11:05 AM ESTRiver Flood WarningIWX38 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.