Alert archive / Illinois / Saint Clair County

Weather alerts in Saint Clair County, Illinois, 2026

113 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Saint Clair County and its neighbors

Each county as a circle sized by its count in 2026. Tap one for its archive.

Alerts
113
Warnings
34
Watches
23
Advisories
24
Busiest month
April21 alerts
Busiest day
April 27, 20269 alerts

Over time

By month

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 8, 3:14 PM CSTMesoscale DiscussionSPC2 hr
Jan 8, 7:50 PM CSTMesoscale DiscussionSPC55 min
Jan 8, 9:42 PM CSTSevere Thunderstorm WarningLSX35 min
Jan 21, 2:42 AM CSTWinter Storm WatchLSX35 hr
Jan 22, 2:29 AM CSTCold Weather AdvisoryLSX58 hr
Jan 22, 1:15 PM CSTWinter Storm WarningLSX3 days
Jan 24, 1:38 PM CSTCold Weather AdvisoryLSX46 hr
Jan 25, 1:55 AM CSTExtreme Cold WarningLSX34 hr
Jan 26, 1:49 AM CSTCold Weather AdvisoryLSX25 hr
Feb 15, 6:31 PM CSTDense Fog AdvisoryLSX11 hr
Feb 19, 4:23 AM CSTDense Fog AdvisoryLSX5 hr
Feb 19, 10:44 AM CSTMesoscale DiscussionSPC91 min
Feb 19, 11:34 AM CSTMesoscale DiscussionSPC116 min
Feb 19, 3:06 PM CSTMesoscale DiscussionSPC84 min
Mar 6, 12:38 AM CSTDense Fog AdvisoryLSX5 hr
Mar 6, 10:28 PM CSTSevere Thunderstorm WatchSPC5 hr
Mar 7, 2:44 AM CSTMesoscale DiscussionSPC2 hr
Mar 11, 4:23 AM CDTMesoscale DiscussionSPC2 hr
Mar 11, 4:35 AM CDTSevere Thunderstorm WarningLSX40 min
Mar 11, 5:05 AM CDTTornado WarningLSX25 min
Mar 14, 10:45 AM CDTWind AdvisoryLSX49 hr
Mar 15, 12:23 PM CDTMesoscale DiscussionSPC2 hr
Mar 15, 1:33 PM CDTTornado WatchSPC6 hr
Mar 15, 5:01 PM CDTSevere Thunderstorm WarningLSX44 min
Mar 15, 5:05 PM CDTTornado WarningLSX34 min
Mar 15, 5:19 PM CDTTornado WarningLSX47 min
Mar 15, 5:28 PM CDTSevere Thunderstorm WarningLSX47 min
Mar 15, 5:34 PM CDTTornado WarningLSX34 min
Mar 27, 11:40 AM CDTFreeze WarningLSX21 hr
Mar 29, 1:27 PM CDTRed Flag WarningLSX5 hr
Apr 2, 3:46 AM CDTWind AdvisoryLSX15 hr
Apr 2, 5:39 PM CDTMesoscale DiscussionSPC2 hr
Apr 15, 6:50 PM CDTTornado WatchSPC4 hr
Apr 15, 10:15 PM CDTSevere Thunderstorm WarningLSX21 min
Apr 17, 3:04 PM CDTMesoscale DiscussionSPC56 min
Apr 17, 3:31 PM CDTTornado WatchSPC8 hr
Apr 17, 8:39 PM CDTMesoscale DiscussionSPC2 hr
Apr 27, 4:07 AM CDTSevere Thunderstorm WatchSPC6 hr
Apr 27, 7:36 AM CDTMesoscale DiscussionSPC84 min
Apr 27, 11:18 AM CDTFlood WatchLSX10 hr
Apr 27, 11:56 AM CDTMesoscale DiscussionSPC2 hr
Apr 27, 12:27 PM CDTTornado WarningLSX48 min
Apr 27, 12:50 PM CDTTornado WatchSPC9 hr
Apr 27, 1:55 PM CDTSevere Thunderstorm WarningLSX45 min
Apr 27, 2:01 PM CDTTornado WarningLSX27 min
Apr 27, 3:55 PM CDTMesoscale DiscussionSPC2 hr
Apr 27, 7:12 PM CDTSevere Thunderstorm Warning Considerable damage threatLSX63 min
Apr 27, 7:52 PM CDTTornado WarningLSX38 min
Apr 27, 7:56 PM CDTSevere Thunderstorm WarningLSX64 min
Apr 27, 8:08 PM CDTMesoscale DiscussionSPC97 min
Apr 28, 11:38 AM CDTRiver Flood WarningLSX5 days
May 3, 8:49 PM CDTMesoscale DiscussionSPC116 min
May 4, 2:48 PM CDTSevere Thunderstorm WarningLSX42 min
May 4, 6:29 PM CDTMesoscale DiscussionSPC3 hr
May 9, 12:15 AM CDTDense Fog AdvisoryLSX7 hr
May 16, 3:20 PM CDTSevere Thunderstorm WarningLSX40 min
May 18, 1:12 AM CDTFlood WatchLSX35 hr
May 18, 2:00 PM CDTAreal Flood AdvisoryLSX3 hr
May 18, 2:54 PM CDTFlash Flood WarningLSX6 hr
May 18, 5:06 PM CDTFlash Flood WarningLSX4 hr
May 18, 8:56 PM CDTAreal Flood AdvisoryLSX3 hr
Jun 1, 3:34 AM CDTSevere Thunderstorm WatchSPC4 hr
Jun 1, 4:02 AM CDTMesoscale DiscussionSPC118 min
Jun 1, 5:57 AM CDTAreal Flood AdvisoryLSX3 hr
Jun 1, 6:01 AM CDTMesoscale DiscussionSPC2 hr
Jun 1, 6:37 AM CDTAreal Flood AdvisoryLSX4 hr
Jun 7, 1:26 PM CDTFlood WatchLSX40 hr
Jun 8, 11:44 AM CDTHeat AdvisoryLSX32 hr
Jun 9, 12:42 PM CDTMesoscale DiscussionSPC93 min
Jun 11, 2:47 PM CDTSevere Thunderstorm WatchSPC8 hr
Jun 16, 12:39 PM CDTWind AdvisoryLSX31 hr
Jun 17, 2:14 PM CDTTornado WatchSPC11 hr
Jun 20, 1:28 AM CDTFlood WatchLSX45 hr
Jun 21, 10:06 AM CDTMesoscale DiscussionSPC114 min
Jun 21, 1:28 PM CDTTornado WatchSPC9 hr
Jun 21, 5:02 PM CDTTornado WarningLSX43 min
Jun 21, 6:53 PM CDTMesoscale DiscussionSPC97 min
Jun 24, 11:53 AM CDTFlood WatchLSX62 hr
Jun 25, 1:11 PM CDTMesoscale DiscussionSPC2 hr
Jun 27, 1:59 AM CDTExtreme Heat WatchLSX11 hr
Jun 27, 12:08 PM CDTAreal Flood AdvisoryLSX3 hr
Jun 27, 1:15 PM CDTExtreme Heat WarningLSX7 days
Jul 4, 12:17 PM CDTSevere Thunderstorm WatchSPC6 hr
Jul 4, 2:36 PM CDTMesoscale DiscussionSPC114 min
Jul 4, 4:42 PM CDTSevere Thunderstorm WarningLSX63 min
Jul 4, 4:56 PM CDTMesoscale DiscussionSPC2 hr
Jul 10, 4:46 PM CDTMesoscale DiscussionSPC119 min
Jul 10, 6:42 PM CDTSevere Thunderstorm WatchSPC5 hr
Jul 10, 7:26 PM CDTMesoscale DiscussionSPC94 min
Jul 10, 8:40 PM CDTSevere Thunderstorm WarningLSX50 min
Jul 10, 9:07 PM CDTAreal Flood AdvisoryLSX3 hr
Jul 10, 9:30 PM CDTFlash Flood WarningLSX6 hr
Jul 10, 9:58 PM CDTFlash Flood WarningLSX4 hr
Jul 17, 11:01 AM CDTHeat AdvisoryLSX4 days
Jul 24, 1:12 AM CDTExtreme Heat WatchLSX11 hr
Jul 24, 12:15 PM CDTHeat AdvisoryLSX47 hr
Jul 26, 12:40 AM CDTExtreme Heat WarningLSX66 hr
Jul 31, 9:57 AM CDTAreal Flood AdvisoryLSX3 hr
Aug 5, 1:57 AM CDTFlood WatchLSX35 hr
Aug 8, 2:05 AM CDTExtreme Heat WatchLSX23 hr
Aug 9, 1:05 AM CDTExtreme Heat WarningLSX8 days
Aug 12, 4:33 PM CDTMesoscale DiscussionSPC117 min
Aug 16, 3:11 PM CDTMesoscale DiscussionSPC2 hr
Aug 16, 8:27 PM CDTMesoscale DiscussionSPC93 min
Aug 16, 9:17 PM CDTSevere Thunderstorm WarningLSX35 min
Aug 19, 8:52 PM CDTMesoscale DiscussionSPC83 min
Aug 30, 12:27 PM CDTHeat AdvisoryLSX3 days
Aug 30, 12:27 PM CDTExtreme Heat WatchLSX11 hr
Sep 3, 12:12 AM CDTExtreme Heat WarningLSX68 hr
Sep 9, 2:40 AM CDTHeat AdvisoryLSX16 hr
Sep 14, 11:30 AM CDTHeat AdvisoryLSX5 days
Sep 16, 4:38 PM CDTAreal Flood AdvisoryLSX3 hr
Sep 20, 6:38 PM CDTMesoscale DiscussionSPC2 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

ProductAlerts
Severe storms
Severe Thunderstorm Warning13
Tornado Warning8
Severe Thunderstorm Watch6
Tornado Watch6
Mesoscale Discussion32
Flooding
Flash Flood Warning4
River Flood Warning1
Flood Watch6
Areal Flood Advisory8
Winter
Winter Storm Warning1
Winter Storm Watch1
Heat
Extreme Heat Warning4
Extreme Heat Watch4
Heat Advisory6
Cold
Extreme Cold Warning1
Freeze Warning1
Cold Weather Advisory3
Wind and dust
Wind Advisory3
Fire
Red Flag Warning1
Fog and smoke
Dense Fog Advisory4

The busiest days

Days with the most alerts issued, by UTC date.

  1. April 27, 20269alerts
  2. March 15, 20267alerts
  3. April 28, 20265alerts
  4. June 1, 20265alerts
  5. July 11, 20265alerts
  6. February 19, 20264alerts
  7. May 18, 20264alerts
  8. June 21, 20264alerts
  9. July 4, 20264alerts
  10. March 11, 20263alerts

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive2025

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. Rebuilt daily.