Alert archive / Illinois / Special Marine Warnings

Special Marine Warnings in Illinois, 2021

50 special marine warnings in 2021. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of special marine warnings reaches back to 1986.

Special Marine Warnings by county

Each county as a circle sized by its count in 2021. Tap one for its archive.

Special Marine Warnings
50
Busiest month
August21 special marine warnings
Busiest day
June 26, 20215 special marine warnings

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.

IssuedProductOfficeCountiesLasted
Apr 5, 4:29 AM CDTSpecial Marine WarningLOT67 min
Apr 29, 6:26 PM CDTSpecial Marine WarningLOT105 min
Apr 29, 7:15 PM CDTSpecial Marine WarningLOT90 min
Jun 18, 4:21 AM CDTSpecial Marine WarningLOT54 min
Jun 18, 4:42 AM CDTSpecial Marine WarningLOT63 min
Jun 19, 7:37 AM CDTSpecial Marine WarningLOT83 min
Jun 20, 10:48 PM CDTSpecial Marine WarningLOT117 min
Jun 26, 11:55 AM CDTSpecial Marine WarningLOT2 hr
Jun 26, 12:33 PM CDTSpecial Marine WarningLOT117 min
Jun 26, 2:24 PM CDTSpecial Marine WarningLOT2 hr
Jun 26, 3:31 PM CDTSpecial Marine WarningLOT119 min
Jun 26, 4:30 PM CDTSpecial Marine WarningLOT2 hr
Jun 29, 9:05 PM CDTSpecial Marine WarningLOT37 min
Jun 30, 11:13 PM CDTSpecial Marine WarningLOT62 min
Jul 1, 12:15 AM CDTSpecial Marine WarningLOT45 min
Jul 24, 3:58 PM CDTSpecial Marine WarningLOT92 min
Jul 24, 5:00 PM CDTSpecial Marine WarningLOT60 min
Jul 28, 4:43 AM CDTSpecial Marine WarningLOT77 min
Jul 29, 1:16 AM CDTSpecial Marine WarningLOT3 hr
Aug 6, 7:56 PM CDTSpecial Marine WarningLOT94 min
Aug 6, 8:27 PM CDTSpecial Marine WarningLOT2 hr
Aug 8, 4:19 PM CDTSpecial Marine WarningLOT37 min
Aug 8, 6:25 PM CDTSpecial Marine WarningLOT65 min
Aug 9, 6:45 PM CDTSpecial Marine WarningLOT90 min
Aug 9, 8:21 PM CDTSpecial Marine WarningLOT114 min
Aug 9, 10:12 PM CDTSpecial Marine WarningLOT2 hr
Aug 10, 7:03 PM CDTSpecial Marine WarningLOT117 min
Aug 11, 9:47 AM CDTSpecial Marine WarningLOT118 min
Aug 11, 12:06 PM CDTSpecial Marine WarningLOT54 min
Aug 12, 2:46 AM CDTSpecial Marine WarningLOT89 min
Aug 21, 3:24 PM CDTSpecial Marine WarningLOT96 min
Aug 24, 3:30 PM CDTSpecial Marine WarningLOT60 min
Aug 24, 5:28 PM CDTSpecial Marine WarningLOT92 min
Aug 24, 7:04 PM CDTSpecial Marine WarningLOT116 min
Aug 25, 6:38 PM CDTSpecial Marine WarningLOT104 min
Aug 25, 7:33 PM CDTSpecial Marine WarningLOT117 min
Aug 28, 4:16 PM CDTSpecial Marine WarningLOT59 min
Aug 28, 5:13 PM CDTSpecial Marine WarningLOT62 min
Aug 28, 5:53 PM CDTSpecial Marine WarningLOT27 min
Aug 29, 3:10 PM CDTSpecial Marine WarningLOT95 min
Sep 7, 12:47 PM CDTSpecial Marine WarningLOT118 min
Sep 7, 1:51 PM CDTSpecial Marine WarningLOT3 hr
Sep 7, 2:41 PM CDTSpecial Marine WarningLOT94 min
Sep 21, 12:12 AM CDTSpecial Marine WarningLOT2 hr
Sep 22, 12:19 PM CDTSpecial Marine WarningLOT86 min
Oct 11, 2:46 PM CDTSpecial Marine WarningLOT59 min
Oct 11, 4:29 PM CDTSpecial Marine WarningLOT91 min
Oct 11, 5:24 PM CDTSpecial Marine WarningLOT55 min
Nov 12, 2:31 PM CSTSpecial Marine WarningLOT89 min
Dec 10, 10:18 PM CSTSpecial Marine WarningLOT27 min

The busiest days

Days with the most alerts issued, by UTC date.

  1. June 26, 20215special marine warnings
  2. August 11, 20213special marine warnings
  3. August 28, 20213special marine warnings
  4. September 7, 20213special marine warnings
  5. October 11, 20213special marine warnings
  6. June 18, 20212special marine warnings
  7. July 1, 20212special marine warnings
  8. July 24, 20212special marine warnings
  9. August 7, 20212special marine warnings
  10. August 8, 20212special marine warnings
  11. August 10, 20212special marine warnings
  12. August 24, 20212special marine warnings

Nearby

Alerts in force nowTornadoes on recordThe radar archive20202022

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.