Alert archive / Illinois / Shelby County

Weather alerts in Shelby County, Illinois, 2024

107 weather alerts in 2024, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Shelby County and its neighbors

Each county as a circle sized by its count in 2024. Tap one for its archive.

Alerts
107
Warnings
26
Watches
22
Advisories
27
Busiest month
April22 alerts
Busiest day
March 14, 202413 alerts

Over time

By month

Warning verification

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

0 of 4 tornado warnings covering Shelby County in 2024 had a tornado report inside them.

Shelby County, 2024

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings40100%0
Severe thunderstorm warnings14843%650%12 min
Flash flood warnings40100%0

Each office's whole area, 2024

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Lincoln, IL: tornado warnings35294%3116%22 min
NWS Lincoln, IL: severe thunderstorm warnings2189357%45975%22 min
NWS Lincoln, IL: flash flood warnings26773%2681%118 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 11, 1:06 PM CSTWind AdvisoryILX41 hr
Jan 12, 2:27 PM CSTWind Chill WatchILX23 hr
Jan 13, 2:55 AM CSTWind Chill WarningILX3 days
Jan 13, 2:55 AM CSTWind Chill AdvisoryILX4 days
Jan 18, 2:23 PM CSTWind Chill AdvisoryILX46 hr
Jan 21, 3:00 AM CSTWinter Weather AdvisoryILX54 hr
Jan 22, 3:27 AM CSTMesoscale DiscussionSPC5 hr
Jan 23, 2:26 PM CSTDense Fog AdvisoryILX70 hr
Jan 26, 1:24 PM CSTDense Fog AdvisoryILX26 hr
Feb 6, 4:05 AM CSTDense Fog AdvisoryILX9 hr
Feb 15, 1:32 PM CSTWinter Weather AdvisoryILX28 hr
Feb 27, 5:47 PM CSTMesoscale DiscussionSPC88 min
Mar 2, 2:54 AM CSTDense Fog AdvisoryILX7 hr
Mar 14, 4:41 AM CDTSevere Thunderstorm WatchSPC7 hr
Mar 14, 7:39 AM CDTMesoscale DiscussionSPC2 hr
Mar 14, 8:13 AM CDTSevere Thunderstorm WarningILX47 min
Mar 14, 8:26 AM CDTSevere Thunderstorm WarningILX49 min
Mar 14, 1:33 PM CDTTornado WatchSPC7 hr
Mar 14, 3:55 PM CDTMesoscale DiscussionSPC65 min
Mar 14, 5:09 PM CDTMesoscale DiscussionSPC96 min
Mar 14, 5:25 PM CDTTornado WarningILX35 min
Mar 14, 5:48 PM CDTSevere Thunderstorm WarningILX42 min
Mar 14, 5:51 PM CDTSevere Thunderstorm WarningILX39 min
Mar 14, 6:25 PM CDTSevere Thunderstorm WarningILX28 min
Mar 14, 6:34 PM CDTTornado WarningILX12 min
Mar 14, 6:50 PM CDTFlash Flood WarningILX3 hr
Mar 24, 2:00 PM CDTWind AdvisoryILX34 hr
Mar 31, 5:26 PM CDTMesoscale DiscussionSPC2 hr
Apr 1, 10:24 AM CDTFlood WatchILX20 hr
Apr 1, 12:35 PM CDTMesoscale DiscussionSPC115 min
Apr 1, 3:50 PM CDTMesoscale DiscussionSPC115 min
Apr 1, 4:49 PM CDTTornado WatchSPC7 hr
Apr 1, 6:34 PM CDTSevere Thunderstorm WarningILX26 min
Apr 1, 6:45 PM CDTMesoscale DiscussionSPC90 min
Apr 1, 7:00 PM CDTSevere Thunderstorm WarningILX30 min
Apr 1, 7:15 PM CDTFlash Flood WarningILX4 hr
Apr 5, 2:13 AM CDTFreeze WarningILX30 hr
Apr 8, 4:09 AM CDTDense Fog AdvisoryILX5 hr
Apr 16, 2:57 PM CDTWind AdvisoryILX6 hr
Apr 16, 3:21 PM CDTSevere Thunderstorm WatchSPC5 hr
Apr 18, 12:08 PM CDTMesoscale DiscussionSPC2 hr
Apr 18, 12:56 PM CDTSevere Thunderstorm WatchSPC8 hr
Apr 18, 3:09 PM CDTMesoscale DiscussionSPC2 hr
Apr 18, 6:12 PM CDTMesoscale DiscussionSPC93 min
Apr 18, 6:42 PM CDTTornado WarningILX48 min
Apr 18, 7:20 PM CDTSevere Thunderstorm WarningILX55 min
Apr 20, 2:25 PM CDTFrost AdvisoryILX18 hr
Apr 21, 2:32 AM CDTFrost AdvisoryILX29 hr
Apr 23, 11:28 PM CDTDense Fog AdvisoryILX4 hr
Apr 29, 9:53 PM CDTDense Fog AdvisoryILX11 hr
May 4, 6:48 PM CDTSpecial Weather StatementILX42 min
May 7, 12:53 AM CDTTornado WatchSPC7 hr
May 7, 4:42 AM CDTMesoscale DiscussionSPC2 hr
May 7, 1:28 PM CDTTornado WatchSPC12 hr
May 21, 9:50 PM CDTSpecial Weather StatementILX55 min
May 24, 1:39 PM CDTMesoscale DiscussionSPC2 hr
May 24, 2:39 PM CDTSevere Thunderstorm WatchSPC10 hr
May 24, 3:57 PM CDTMesoscale DiscussionSPC93 min
May 24, 6:19 PM CDTMesoscale DiscussionSPC116 min
May 25, 2:15 PM CDTFlood WatchILX32 hr
May 26, 5:38 PM CDTMesoscale DiscussionSPC67 min
May 26, 6:27 PM CDTSevere Thunderstorm WatchSPC5 hr
Jun 5, 10:38 AM CDTMesoscale DiscussionSPC3 hr
Jun 13, 7:48 PM CDTMesoscale DiscussionSPC87 min
Jun 13, 8:12 PM CDTSevere Thunderstorm WatchSPC5 hr
Jun 25, 11:43 AM CDTMesoscale DiscussionSPC92 min
Jun 25, 12:10 PM CDTSevere Thunderstorm WatchSPC5 hr
Jun 25, 12:30 PM CDTSpecial Weather StatementILX30 min
Jun 25, 4:47 PM CDTSpecial Weather StatementILX28 min
Jun 29, 11:42 AM CDTMesoscale DiscussionSPC63 min
Jun 29, 5:10 PM CDTMesoscale DiscussionSPC95 min
Jul 8, 1:52 AM CDTFlood WatchILX51 hr
Jul 9, 6:43 PM CDTAreal Flood AdvisoryILX2 hr
Jul 13, 2:51 PM CDTHeat AdvisoryILX53 hr
Jul 15, 2:47 PM CDTFlood WatchILX16 hr
Jul 15, 9:37 PM CDTMesoscale DiscussionSPC83 min
Jul 15, 9:56 PM CDTSpecial Weather StatementILX64 min
Jul 15, 9:59 PM CDTSevere Thunderstorm WatchSPC3 hr
Jul 16, 1:05 AM CDTFlash Flood WarningILX3 hr
Jul 16, 2:52 AM CDTFlash Flood WarningILX4 hr
Jul 29, 7:48 PM CDTSevere Thunderstorm WatchSPC9 hr
Jul 29, 8:07 PM CDTTornado WarningILX23 min
Jul 30, 2:23 AM CDTHeat AdvisoryILX18 hr
Jul 30, 6:14 AM CDTSevere Thunderstorm WatchSPC5 hr
Jul 30, 8:05 AM CDTSevere Thunderstorm WarningILX40 min
Jul 30, 8:36 AM CDTSevere Thunderstorm WarningILX24 min
Jul 30, 8:58 AM CDTSevere Thunderstorm WarningILX47 min
Jul 30, 9:09 AM CDTMesoscale DiscussionSPC2 hr
Jul 30, 2:58 PM CDTSevere Thunderstorm WatchSPC8 hr
Jul 30, 3:17 PM CDTSevere Thunderstorm WarningILX43 min
Jul 30, 3:48 PM CDTSevere Thunderstorm WarningILX42 min
Jul 30, 4:25 PM CDTSevere Thunderstorm WarningILX65 min
Jul 31, 5:50 AM CDTSevere Thunderstorm WatchSPC6 hr
Aug 1, 2:19 AM CDTMesoscale DiscussionSPC86 min
Aug 16, 1:19 AM CDTMesoscale DiscussionSPC116 min
Aug 25, 2:22 PM CDTHeat AdvisoryILX54 hr
Aug 30, 3:41 PM CDTMesoscale DiscussionSPC3 hr
Sep 26, 1:28 PM CDTWind AdvisoryILX36 hr
Sep 27, 10:53 AM CDTHigh Wind WarningILX11 hr
Oct 15, 2:31 AM CDTFrost AdvisoryILX29 hr
Oct 16, 2:01 PM CDTFreeze WarningILX18 hr
Oct 28, 2:41 PM CDTFire Weather WatchILX12 hr
Nov 18, 3:32 AM CSTWind AdvisoryILX26 hr
Nov 21, 3:02 AM CSTWind AdvisoryILX18 hr
Dec 4, 2:18 AM CSTWind AdvisoryILX23 hr
Dec 15, 8:33 PM CSTDense Fog AdvisoryILX14 hr
Dec 28, 5:52 AM CSTDense Fog AdvisoryILX3 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 archive20232025

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.