Alert archive / Illinois / Special Marine Warnings

Special Marine Warnings in Illinois, 2020

55 special marine warnings in 2020. 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 2020. Tap one for its archive.

Special Marine Warnings
55
Busiest month
June14 special marine warnings
Busiest day
August 3, 20204 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
Mar 28, 11:37 PM CDTSpecial Marine WarningLOT53 min
Apr 7, 6:56 PM CDTSpecial Marine WarningLOT2 hr
Apr 7, 8:28 PM CDTSpecial Marine WarningLOT47 min
Apr 8, 4:54 PM CDTSpecial Marine WarningLOT66 min
Apr 20, 6:55 PM CDTSpecial Marine WarningLOT95 min
Apr 20, 7:59 PM CDTSpecial Marine WarningLOT2 hr
Apr 20, 9:50 PM CDTSpecial Marine WarningLOT55 min
Apr 28, 6:16 PM CDTSpecial Marine WarningLOT89 min
Apr 28, 6:33 PM CDTSpecial Marine WarningLOT57 min
May 3, 6:52 PM CDTSpecial Marine WarningLOT83 min
May 3, 8:06 PM CDTSpecial Marine WarningLOT84 min
May 17, 6:59 PM CDTSpecial Marine WarningLOT31 min
May 23, 3:14 PM CDTSpecial Marine WarningLOT2 hr
May 23, 4:37 PM CDTSpecial Marine WarningLOT83 min
May 23, 7:02 PM CDTSpecial Marine WarningLOT118 min
May 26, 2:48 PM CDTSpecial Marine WarningLOT57 min
Jun 9, 7:25 PM CDTSpecial Marine WarningLOT95 min
Jun 9, 8:54 PM CDTSpecial Marine WarningLOT96 min
Jun 10, 8:17 AM CDTSpecial Marine WarningLOT3 hr
Jun 20, 4:45 PM CDTSpecial Marine WarningLOT60 min
Jun 20, 5:12 PM CDTSpecial Marine WarningLOT52 min
Jun 20, 8:51 PM CDTSpecial Marine WarningLOT84 min
Jun 22, 1:26 PM CDTSpecial Marine WarningLOT64 min
Jun 22, 1:41 PM CDTSpecial Marine WarningLOT94 min
Jun 22, 2:28 PM CDTSpecial Marine WarningLOT92 min
Jun 26, 3:41 PM CDTSpecial Marine WarningLOT24 min
Jun 26, 6:10 PM CDTSpecial Marine WarningLOT2 hr
Jun 26, 7:07 PM CDTSpecial Marine WarningLOT53 min
Jun 26, 7:53 PM CDTSpecial Marine WarningLOT37 min
Jun 29, 4:16 PM CDTSpecial Marine WarningLOT89 min
Jul 7, 7:36 PM CDTSpecial Marine WarningLOT84 min
Jul 9, 7:05 PM CDTSpecial Marine WarningLOT40 min
Jul 9, 9:40 PM CDTSpecial Marine WarningLOT95 min
Jul 19, 9:01 AM CDTSpecial Marine WarningLOT89 min
Jul 19, 11:15 AM CDTSpecial Marine WarningLOT79 min
Jul 19, 11:35 AM CDTSpecial Marine WarningLOT55 min
Jul 26, 3:20 PM CDTSpecial Marine WarningLOT40 min
Jul 26, 8:41 PM CDTSpecial Marine WarningLOT75 min
Aug 2, 3:55 PM CDTSpecial Marine WarningLOT65 min
Aug 2, 4:42 PM CDTSpecial Marine WarningLOT74 min
Aug 2, 5:29 PM CDTSpecial Marine WarningLOT67 min
Aug 2, 11:20 PM CDTSpecial Marine WarningLOT39 min
Aug 3, 1:00 AM CDTSpecial Marine WarningLOT90 min
Aug 3, 3:44 AM CDTSpecial Marine WarningLOT61 min
Aug 3, 7:12 AM CDTSpecial Marine WarningLOT2 hr
Aug 10, 1:57 PM CDTSpecial Marine WarningLOT3 hr
Aug 10, 4:53 PM CDTSpecial Marine WarningLOT85 min
Aug 23, 3:48 PM CDTSpecial Marine WarningLOT82 min
Aug 25, 3:25 AM CDTSpecial Marine WarningLOT2 hr
Aug 25, 5:51 AM CDTSpecial Marine WarningLOT84 min
Aug 25, 6:45 AM CDTSpecial Marine WarningLOT90 min
Aug 28, 10:38 PM CDTSpecial Marine WarningLOT82 min
Oct 12, 2:44 PM CDTSpecial Marine WarningLOT61 min
Nov 10, 4:44 PM CSTSpecial Marine WarningLOT2 hr
Nov 10, 6:40 PM CSTSpecial Marine WarningLOT62 min

The busiest days

Days with the most alerts issued, by UTC date.

  1. August 3, 20204special marine warnings
  2. June 10, 20203special marine warnings
  3. June 22, 20203special marine warnings
  4. July 19, 20203special marine warnings
  5. August 2, 20203special marine warnings
  6. August 25, 20203special marine warnings
  7. April 8, 20202special marine warnings
  8. April 21, 20202special marine warnings
  9. April 28, 20202special marine warnings
  10. May 23, 20202special marine warnings
  11. June 20, 20202special marine warnings
  12. June 26, 20202special marine warnings

Nearby

Alerts in force nowTornadoes on recordThe radar archive20192021

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.