Alert archive / Illinois / McHenry County / Mesoscale Discussions

Mesoscale Discussions in McHenry County, Illinois, 2021

20 mesoscale discussions in 2021. An alert counts here when it covered this county. The archive of mesoscale discussions reaches back to 2003.

McHenry County and its neighbors

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

Mesoscale Discussions
20
Busiest month
August9 mesoscale discussions
Busiest day
July 14, 20212 mesoscale discussions

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
Jul 7, 2:02 PM CDTMesoscale DiscussionSPC88 min
Jul 14, 11:45 AM CDTMesoscale DiscussionSPC2 hr
Jul 14, 2:01 PM CDTMesoscale DiscussionSPC119 min
Jul 14, 11:17 PM CDTMesoscale DiscussionSPC58 min
Jul 15, 2:14 AM CDTMesoscale DiscussionSPC61 min
Jul 24, 3:00 PM CDTMesoscale DiscussionSPC2 hr
Jul 29, 12:32 AM CDTMesoscale DiscussionSPC88 min
Jul 29, 1:34 AM CDTMesoscale DiscussionSPC86 min
Aug 6, 3:23 PM CDTMesoscale DiscussionSPC97 min
Aug 9, 12:18 PM CDTMesoscale DiscussionSPC2 hr
Aug 10, 3:10 PM CDTMesoscale DiscussionSPC2 hr
Aug 10, 5:51 PM CDTMesoscale DiscussionSPC84 min
Aug 11, 7:35 PM CDTMesoscale DiscussionSPC85 min
Aug 11, 11:06 PM CDTMesoscale DiscussionSPC84 min
Aug 24, 3:09 PM CDTMesoscale DiscussionSPC66 min
Aug 24, 5:10 PM CDTMesoscale DiscussionSPC2 hr
Aug 29, 1:18 PM CDTMesoscale DiscussionSPC87 min
Sep 7, 12:25 PM CDTMesoscale DiscussionSPC65 min
Oct 11, 12:37 PM CDTMesoscale DiscussionSPC113 min
Dec 28, 8:59 AM CSTMesoscale DiscussionSPC5 hr

The busiest days

Days with the most alerts issued, by UTC date.

  1. July 14, 20212mesoscale discussions
  2. July 15, 20212mesoscale discussions
  3. July 29, 20212mesoscale discussions
  4. August 10, 20212mesoscale discussions
  5. August 12, 20212mesoscale discussions
  6. August 24, 20212mesoscale discussions
  7. July 7, 20211mesoscale discussions
  8. July 24, 20211mesoscale discussions
  9. August 6, 20211mesoscale discussions
  10. August 9, 20211mesoscale discussions

Nearby

Alerts in force nowTornadoes on recordForecastThe 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.