Alert archive / Illinois / Tornado Warnings

Tornado Warnings in Illinois, 1986

31 tornado warnings in 1986. 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 tornado warnings reaches back to 1986.

Tornado Warnings by county

Each county as a circle sized by its count in 1986. Tap one for its archive.

Tornado Warnings
31
Busiest month
May15 tornado warnings
Busiest day
May 16, 19868 tornado 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
May 15, 3:32 PM CDTTornado WarningILXLee, Ogle28 min
May 15, 5:40 PM CDTTornado WarningPAHAlexander, Pulaski35 min
May 15, 6:18 PM CDTTornado WarningPAHJohnson, Pope42 min
May 15, 6:30 PM CDTTornado WarningPAHAlexander, Pulaski60 min
May 15, 6:30 PM CDTTornado WarningPAHMassac60 min
May 15, 7:46 PM CDTTornado WarningPAHFranklin, Hamilton44 min
May 15, 7:48 PM CDTTornado WarningILXColes27 min
May 15, 8:01 PM CDTTornado WarningPAHAlexander59 min
May 15, 8:10 PM CDTTornado WarningILXEdgar35 min
May 15, 8:43 PM CDTTornado WarningILXEdgar32 min
May 15, 8:45 PM CDTTornado WarningPAHPulaski60 min
May 15, 9:00 PM CDTTornado WarningPAHAlexander, Union60 min
May 16, 5:29 PM CDTTornado WarningILXMacon, Sangamon31 min
May 17, 3:03 PM CDTTornado WarningLOTKane, Kendall57 min
May 17, 3:38 PM CDTTornado WarningLOTCook, Lake, McHenry67 min
Jun 6, 6:25 PM CDTTornado WarningILXMcLean35 min
Jul 1, 5:28 PM CDTTornado WarningPAHFranklin47 min
Jul 6, 7:23 PM CDTTornado WarningLOTLake, McHenry67 min
Jul 10, 8:09 PM CDTTornado WarningILXDeWitt, Piatt21 min
Jul 10, 8:45 PM CDTTornado WarningILXChampaign30 min
Jul 10, 8:55 PM CDTTornado WarningILXMacon35 min
Jul 10, 9:05 PM CDTTornado WarningILXDouglas, Edgar, Vermilion25 min
Jul 10, 9:50 PM CDTTornado WarningILXChampaign25 min
Jul 14, 1:13 AM CDTTornado WarningILXDeWitt, Logan32 min
Aug 6, 4:59 PM CDTTornado WarningILXChampaign31 min
Aug 6, 5:40 PM CDTTornado WarningILXChampaign, Piatt20 min
Aug 17, 1:13 AM CDTTornado WarningDVNMercer47 min
Sep 24, 5:33 PM CDTTornado WarningILXPeoria, Woodford57 min
Sep 24, 6:43 PM CDTTornado WarningILXMarshall, Woodford62 min
Sep 28, 6:00 PM CDTTornado WarningILXBoone, Ogle, Winnebago60 min
Sep 29, 4:22 PM CDTTornado WarningILXMcLean48 min

By county

Every county with at least one alert. A county page lists each alert that covered it.

The busiest days

Days with the most alerts issued, by UTC date.

  1. May 16, 19868tornado warnings
  2. May 15, 19865tornado warnings
  3. July 11, 19865tornado warnings
  4. May 17, 19862tornado warnings
  5. August 6, 19862tornado warnings
  6. September 24, 19862tornado warnings
  7. June 6, 19861tornado warnings
  8. July 1, 19861tornado warnings
  9. July 7, 19861tornado warnings
  10. July 14, 19861tornado warnings
  11. August 17, 19861tornado warnings
  12. September 28, 19861tornado warnings

Nearby

Alerts in force nowTornadoes on recordThe radar archive1987

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.