Alert archive / Illinois / Livingston County

Weather alerts in Livingston County, Illinois, 2016

102 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Livingston County and its neighbors

Each county as a circle sized by its count in 2016. Tap one for its archive.

Alerts
102
Warnings
32
Watches
13
Advisories
26
Busiest month
July32 alerts
Busiest day
July 18, 201615 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 7 tornado warnings covering Livingston County in 2016 had a tornado report inside them; 9 of 9 tornado reports fell inside a warning, on average 17 minutes after it went out.

Livingston County, 2016

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings7357%9100%17 min
Severe thunderstorm warnings13469%667%24 min
Flash flood warnings6267%1100%56 min

Each office's whole area, 2016

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Chicago, IL: tornado warnings17947%2665%17 min
NWS Chicago, IL: severe thunderstorm warnings974653%15555%21 min
NWS Chicago, IL: flash flood warnings251252%2778%55 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, Central Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Jan 9, 3:09 AM CSTWinter Weather AdvisoryLOT16 hr
Jan 17, 3:02 AM CSTWind Chill AdvisoryLOT33 hr
Feb 2, 9:55 PM CSTDense Fog AdvisoryLOT7 hr
Feb 13, 2:29 PM CSTWinter Weather AdvisoryLOT34 hr
Feb 18, 2:46 PM CSTWind AdvisoryLOT27 hr
Feb 23, 3:12 PM CSTWinter Storm WarningLOT30 hr
Feb 28, 4:10 AM CSTWind AdvisoryLOT11 hr
Mar 15, 2:24 PM CDTMesoscale DiscussionSPC66 min
Mar 15, 3:06 PM CDTWind AdvisoryLOT29 hr
Mar 15, 3:31 PM CDTTornado WatchSPC7 hr
Mar 15, 8:29 PM CDTSevere Thunderstorm WarningLOT46 min
Mar 15, 9:13 PM CDTSevere Thunderstorm WarningLOT47 min
Mar 15, 9:21 PM CDTSevere Thunderstorm WarningLOT39 min
Mar 31, 12:24 PM CDTSpecial Weather StatementLOT21 min
Mar 31, 12:36 PM CDTMesoscale DiscussionSPC84 min
Apr 1, 2:29 PM CDTWind AdvisoryLOT29 hr
Apr 3, 3:57 AM CDTWind AdvisoryLOT15 hr
Apr 21, 1:29 PM CDTMesoscale DiscussionSPC3 hr
May 10, 10:45 PM CDTDense Fog AdvisoryLOT11 hr
May 14, 3:05 AM CDTFrost AdvisoryLOT29 hr
Jun 9, 7:58 PM CDTMesoscale DiscussionSPC2 hr
Jun 14, 3:05 AM CDTAreal Flood AdvisoryLOT4 hr
Jun 14, 8:54 PM CDTFlash Flood WatchLOT8 hr
Jun 20, 1:54 PM CDTMesoscale DiscussionSPC2 hr
Jun 20, 3:03 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 20, 6:05 PM CDTMesoscale DiscussionSPC85 min
Jun 21, 3:35 PM CDTFlash Flood WatchLOT33 hr
Jun 22, 3:38 PM CDTMesoscale DiscussionSPC97 min
Jun 22, 6:11 PM CDTTornado WatchSPC7 hr
Jun 22, 8:53 PM CDTMesoscale DiscussionSPC97 min
Jun 22, 9:12 PM CDTSevere Thunderstorm WarningLOT48 min
Jun 22, 9:42 PM CDTTornado WarningLOT33 min
Jun 22, 9:53 PM CDTAreal Flood AdvisoryLOT4 hr
Jun 22, 10:03 PM CDTTornado WarningLOT31 min
Jun 22, 10:22 PM CDTTornado Warning Tornado observedLOT38 min
Jun 22, 10:47 PM CDTTornado Warning Tornado observedLOT43 min
Jun 22, 10:51 PM CDTTornado WarningLOT39 min
Jun 22, 11:29 PM CDTSevere Thunderstorm WarningLOT31 min
Jun 22, 11:51 PM CDTMesoscale DiscussionSPC84 min
Jun 22, 11:53 PM CDTSevere Thunderstorm WarningLOT52 min
Jul 6, 1:27 AM CDTMesoscale DiscussionSPC2 hr
Jul 6, 1:55 AM CDTSevere Thunderstorm WatchSPC6 hr
Jul 6, 5:04 AM CDTMesoscale DiscussionSPC116 min
Jul 13, 2:37 PM CDTSevere Thunderstorm WatchSPC5 hr
Jul 13, 5:08 PM CDTMesoscale DiscussionSPC2 hr
Jul 13, 5:16 PM CDTSevere Thunderstorm WarningLOT59 min
Jul 13, 5:37 PM CDTSevere Thunderstorm WarningLOT53 min
Jul 17, 7:00 AM CDTMesoscale DiscussionSPC2 hr
Jul 17, 7:51 PM CDTSevere Thunderstorm WarningLOT39 min
Jul 17, 8:06 PM CDTMesoscale DiscussionSPC84 min
Jul 17, 8:43 PM CDTSevere Thunderstorm WarningLOT47 min
Jul 17, 8:47 PM CDTTornado WarningLOT28 min
Jul 17, 9:02 PM CDTSevere Thunderstorm WatchSPC4 hr
Jul 17, 9:13 PM CDTTornado WarningLOT32 min
Jul 17, 9:46 PM CDTMesoscale DiscussionSPC89 min
Jul 17, 11:11 PM CDTSevere Thunderstorm WarningLOT34 min
Jul 17, 11:25 PM CDTMesoscale DiscussionSPC95 min
Jul 17, 11:45 PM CDTAreal Flood AdvisoryLOT4 hr
Jul 18, 12:53 AM CDTFlash Flood WarningLOT5 hr
Jul 18, 2:30 AM CDTFlash Flood WarningLOT4 hr
Jul 18, 3:26 AM CDTAreal Flood AdvisoryLOT3 hr
Jul 18, 10:46 AM CDTAreal Flood WarningLOT12 hr
Jul 18, 3:19 PM CDTExcessive Heat WatchLOT61 hr
Jul 20, 12:47 PM CDTExcessive Heat WarningLOT3 days
Jul 21, 6:18 PM CDTSevere Thunderstorm WatchSPC6 hr
Jul 21, 9:57 PM CDTSpecial Weather StatementLOT63 min
Jul 21, 10:53 PM CDTSpecial Weather StatementLOT67 min
Jul 21, 11:08 PM CDTMesoscale DiscussionSPC67 min
Jul 24, 3:27 AM CDTHeat AdvisoryLOT16 hr
Jul 24, 5:42 PM CDTMesoscale DiscussionSPC93 min
Jul 24, 7:50 PM CDTAreal Flood AdvisoryLOT4 hr
Jul 24, 8:11 PM CDTSpecial Weather StatementLOT64 min
Aug 11, 8:06 PM CDTFlash Flood WatchLOT28 hr
Aug 12, 5:18 PM CDTFlash Flood WarningLOT6 hr
Aug 15, 6:00 PM CDTAreal Flood WarningLOT3 hr
Aug 18, 2:48 PM CDTAreal Flood AdvisoryLOT3 hr
Aug 18, 3:22 PM CDTSpecial Weather StatementLOT23 min
Aug 18, 3:41 PM CDTSpecial Weather StatementLOT19 min
Aug 18, 7:01 PM CDTFlash Flood WarningLOT4 hr
Aug 18, 7:54 PM CDTFlash Flood WatchLOT8 hr
Aug 24, 1:20 PM CDTMesoscale DiscussionSPC85 min
Aug 24, 3:19 PM CDTFlash Flood WatchLOT12 hr
Aug 25, 1:40 AM CDTSpecial Weather StatementLOT35 min
Aug 25, 1:47 AM CDTSevere Thunderstorm WarningLOT43 min
Aug 28, 12:49 PM CDTAreal Flood AdvisoryLOT4 hr
Aug 28, 1:34 PM CDTFlash Flood WarningLOT6 hr
Aug 28, 1:45 PM CDTSevere Thunderstorm WarningLOT45 min
Aug 28, 3:13 PM CDTFlash Flood WarningLOT8 hr
Aug 28, 7:24 PM CDTAreal Flood WarningLOT18 hr
Sep 7, 3:36 PM CDTMesoscale DiscussionSPC2 hr
Sep 9, 3:05 AM CDTDense Fog AdvisoryLOT6 hr
Sep 21, 2:00 PM CDTMesoscale DiscussionSPC2 hr
Sep 25, 2:38 PM CDTMesoscale DiscussionSPC2 hr
Sep 27, 12:03 PM CDTRed Flag WarningLOT7 hr
Nov 2, 11:10 AM CDTSpecial Weather StatementLOT35 min
Nov 18, 10:29 AM CSTWind AdvisoryLOT29 hr
Nov 27, 9:21 AM CSTDense Fog AdvisoryLOT4 hr
Dec 3, 3:07 PM CSTWinter Weather AdvisoryLOT27 hr
Dec 10, 6:59 PM CSTMesoscale DiscussionSPC6 hr
Dec 14, 3:24 AM CSTWind Chill AdvisoryLOT31 hr
Dec 15, 3:17 PM CSTWinter Weather AdvisoryLOT63 hr
Dec 16, 8:27 PM CSTWind Chill AdvisoryLOT62 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 archive20152017

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.