Pilot Index / Illinois / Jun 20, 2021

Preliminary

Storms in Illinois on Jun 20, 2021

24 published severe reports across Illinois on Jun 20, 2021.

Updated Oct 28, 2026.

Coverage is partial. 473 source scopes are pending. Pending data is not a zero report count.

Hail reports: 1. Wind reports: 17. Tornado reports: 6.

The table and map show 24 of 24 reports.

TimeWhatSize or SpeedWhereDetails
Jun 20, 2021, 9:00 PM CDTWind60 mphGALENA
Record
  • Jun 20, 2021, 9:00 PM CDT. Wind, 60 mph, GALENA. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:957349.
Jun 20, 2021, 9:05 PM CDTWind60 mphSAVANNA
Record
  • Jun 20, 2021, 9:05 PM CDT. Wind, 60 mph, SAVANNA. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:957348.
Jun 20, 2021, 9:10 PM CDTWind60 mphLANARK
Record
  • Jun 20, 2021, 9:10 PM CDT. Wind, 60 mph, LANARK. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:957345.
Jun 20, 2021, 9:13 PM CDTHail1.25 inSHANNON
Record
  • Jun 20, 2021, 9:13 PM CDT. Hail, 1.25 in, SHANNON. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:957344.
Jun 20, 2021, 10:28 PM CDTWind60 mphCOLCHESTER
Record
  • Jun 20, 2021, 10:28 PM CDT. Wind, 60 mph, COLCHESTER. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:c6dbe15383aa49bed0d8c1b74b2aaabeead887f2183fb41504691bb0679a7a21.
Jun 20, 2021, 10:28 PM CDTWind60 mphCOLCHESTER
Record
  • Jun 20, 2021, 10:28 PM CDT. Wind, 60 mph, COLCHESTER. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:957346.
Jun 20, 2021, 10:33 PM CDTWind64 mphMACOMB
Record
  • Jun 20, 2021, 10:33 PM CDT. Wind, 64 mph, MACOMB. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:957347.
Jun 20, 2021, 10:34 PM CDTWind60 mphMACOMB
Record
  • Jun 20, 2021, 10:34 PM CDT. Wind, 60 mph, MACOMB. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:220147db0e39a0fa1ee02c10005127118df2673a2ea28e044229cec1887eeb4d.
Jun 20, 2021, 10:46 PM CDTWind60 mph2 W SUGAR GROVE
Record
  • Jun 20, 2021, 10:46 PM CDT. Wind, 60 mph, 2 W SUGAR GROVE. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:7466d73c22fa2be811229a5aa7871238eecf941e4e604aa0f50e054072e50daa.
Jun 20, 2021, 10:46 PM CDTWind60 mph(ARR) AURORA MUNICIPAL AIRPORT
Record
  • Jun 20, 2021, 10:46 PM CDT. Wind, 60 mph, (ARR) AURORA MUNICIPAL AIRPORT. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:958157.
Jun 20, 2021, 10:46 PM CDTWind69 mphKANEVILLE
Record
  • Jun 20, 2021, 10:46 PM CDT. Wind, 69 mph, KANEVILLE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:958163.
Jun 20, 2021, 10:51 PM CDTWind60 mph1 N ROSELLE
Record
  • Jun 20, 2021, 10:51 PM CDT. Wind, 60 mph, 1 N ROSELLE. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:4ca04890d0b5e5a1f7ff61192cbd85d6fa1ba4ccd2afa5d295a3b8f6d3a676c8.
Jun 20, 2021, 10:51 PM CDTWind60 mph(O6C) SCHAUMBURG REGIONAL AIRPORT
Record
  • Jun 20, 2021, 10:51 PM CDT. Wind, 60 mph, (O6C) SCHAUMBURG REGIONAL AIRPORT. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:958158.
Jun 20, 2021, 10:52 PM CDTWind64 mphADDISON
Record
  • Jun 20, 2021, 10:52 PM CDT. Wind, 64 mph, ADDISON. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:960417.
Jun 20, 2021, 10:54 PM CDTTornadoADDISON
Record
  • Jun 20, 2021, 10:54 PM CDT. Tornado, ADDISON. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:960421.
Jun 20, 2021, 11:02 PM CDTTornadoNAPERVILLE
Record
  • Jun 20, 2021, 11:02 PM CDT. Tornado, NAPERVILLE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:960280.
Jun 20, 2021, 11:05 PM CDTTornado2 SSW NAPERVILLE
Record
  • Jun 20, 2021, 11:05 PM CDT. Tornado, 2 SSW NAPERVILLE. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:89643a24fae3ebf2354747b1d161dac353c458b43f6b963ccbd0c1102436ca94.
Jun 20, 2021, 11:08 PM CDTTornadoPLAINFIELD
Record
  • Jun 20, 2021, 11:08 PM CDT. Tornado, PLAINFIELD. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:c1a0b6d237385ee671ee38498496b9961eae1698502f6c6f54bda069a428feb2.
Jun 20, 2021, 11:08 PM CDTTornadoPLAINFIELD
Record
  • Jun 20, 2021, 11:08 PM CDT. Tornado, PLAINFIELD. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:960214.
Jun 20, 2021, 11:15 PM CDTWind69 mphDOWNERS GROVE
Record
  • Jun 20, 2021, 11:15 PM CDT. Wind, 69 mph, DOWNERS GROVE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:958161.
Jun 20, 2021, 11:17 PM CDTWind69 mphWESTMONT
Record
  • Jun 20, 2021, 11:17 PM CDT. Wind, 69 mph, WESTMONT. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:958162.
Jun 20, 2021, 11:21 PM CDTTornadoBURR RIDGE
Record
  • Jun 20, 2021, 11:21 PM CDT. Tornado, BURR RIDGE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:960282.
Jun 20, 2021, 11:40 PM CDTWind69 mphELSDON
Record
  • Jun 20, 2021, 11:40 PM CDT. Wind, 69 mph, ELSDON. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:960737.
Jun 20, 2021, 11:50 PM CDTWind63 mphCRETE
Record
  • Jun 20, 2021, 11:50 PM CDT. Wind, 63 mph, CRETE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:960738.
How We Count

This page uses published ground reports from 2016-01-01 through 2026-10-29. Coverage is partial. 473 source scopes are pending. Pending data is not a zero report count.

Hail counts at 1.00 in or larger. Wind counts at 58 mph or stronger. State days also include tornado reports.

Reports use the local civil date and clock. City pages use the city clock. State pages use each report location clock.

Exact repeated observations are counted once. Nearby reports with different times, coordinates or sizes remain separate observations.

NCEI rows are verified against NCEI Storm Events. SPC and NWS local reports are preliminary.

Radar signatures and warning polygons are not ground reports and are not in these counts.

A missing report does not show that no storm occurred. These pages show city or state exposure, not damage at an address.

This free page covers the state. It does not check a street address.

Limits

This page is not a certified record.

This page shows weather exposure, not damage or cause.

This page is not an expert opinion and it is not a meteorologist review.

Verify these rows with official NOAA and NWS records.

VectorWX is not affiliated with or endorsed by NOAA or NWS.

Radar-estimated hail size comes from MRMS MESH or NCEI nx3hail. It is an estimate of hail aloft. It is not a measurement of hail on a roof.