Pilot Index / Illinois / Aug 11, 2021

Preliminary

Storms in Illinois on Aug 11, 2021

71 published severe reports across Illinois on Aug 11, 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: 70. Tornado reports: 0.

The table and map show 40 of 71 reports.

TimeWhatSize or SpeedWhereDetails
Aug 11, 2021, 6:44 AM CDTWind70 mphNEW BOSTON
Record
  • Aug 11, 2021, 6:44 AM CDT. Wind, 70 mph, NEW BOSTON. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:973388.
Aug 11, 2021, 8:01 AM CDTHail1.00 inBLACKHAWK STATE PARK
Record
  • Aug 11, 2021, 8:01 AM CDT. Hail, 1.00 in, BLACKHAWK STATE PARK. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:973379.
Aug 11, 2021, 8:10 AM CDTWind60 mphGENESEO
Record
  • Aug 11, 2021, 8:10 AM CDT. Wind, 60 mph, GENESEO. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:973380.
Aug 11, 2021, 8:15 AM CDTWind60 mphGENESEO
Record
  • Aug 11, 2021, 8:15 AM CDT. Wind, 60 mph, GENESEO. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:973384.
Aug 11, 2021, 8:35 AM CDTWind81 mphOHIO
Record
  • Aug 11, 2021, 8:35 AM CDT. Wind, 81 mph, OHIO. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:973382.
Aug 11, 2021, 8:40 AM CDTWind64 mphOHIO
Record
  • Aug 11, 2021, 8:40 AM CDT. Wind, 64 mph, OHIO. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:973385.
Aug 11, 2021, 8:45 AM CDTWind64 mphMORRISON
Record
  • Aug 11, 2021, 8:45 AM CDT. Wind, 64 mph, MORRISON. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:973383.
Aug 11, 2021, 8:50 AM CDTWind60 mphLA MOILLE
Record
  • Aug 11, 2021, 8:50 AM CDT. Wind, 60 mph, LA MOILLE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:973386.
Aug 11, 2021, 8:54 AM CDTWind69 mphMENDOTA
Record
  • Aug 11, 2021, 8:54 AM CDT. Wind, 69 mph, MENDOTA. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:974640.
Aug 11, 2021, 8:56 AM CDTWind69 mphCOMPTON
Record
  • Aug 11, 2021, 8:56 AM CDT. Wind, 69 mph, COMPTON. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:974641.
Aug 11, 2021, 8:58 AM CDTWind63 mphPRAIRIE CENTER
Record
  • Aug 11, 2021, 8:58 AM CDT. Wind, 63 mph, PRAIRIE CENTER. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:974644.
Aug 11, 2021, 9:00 AM CDTWind80 mph4 SSE EARLVILLE
Record
  • Aug 11, 2021, 9:00 AM CDT. Wind, 80 mph, 4 SSE EARLVILLE. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:66132650f285d83930f8865d611d5e57cb20304258822841d578349a0fb5e021.
Aug 11, 2021, 9:01 AM CDTWind67 mphCOMPTON
Record
  • Aug 11, 2021, 9:01 AM CDT. Wind, 67 mph, COMPTON. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:dc0656576256839797e09f08ad22b0ecb09f35060208bb26793eef0899e489cd.
Aug 11, 2021, 9:01 AM CDTWind67 mphCOMPTON
Record
  • Aug 11, 2021, 9:01 AM CDT. Wind, 67 mph, COMPTON. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:974643.
Aug 11, 2021, 9:01 AM CDTWind81 mphEARLVILLE
Record
  • Aug 11, 2021, 9:01 AM CDT. Wind, 81 mph, EARLVILLE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:978380.
Aug 11, 2021, 9:06 AM CDTWind69 mph4 E EARLVILLE
Record
  • Aug 11, 2021, 9:06 AM CDT. Wind, 69 mph, 4 E EARLVILLE. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:774105790683edf77850adb69237b1e138ae00bf7069d9ad4e4a0086e085890b.
Aug 11, 2021, 9:06 AM CDTWind69 mphEARLVILLE
Record
  • Aug 11, 2021, 9:06 AM CDT. Wind, 69 mph, EARLVILLE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:974646.
Aug 11, 2021, 9:08 AM CDTWind69 mphLELAND
Record
  • Aug 11, 2021, 9:08 AM CDT. Wind, 69 mph, LELAND. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:978328.
Aug 11, 2021, 9:10 AM CDTWind63 mphSOMONAUK
Record
  • Aug 11, 2021, 9:10 AM CDT. Wind, 63 mph, SOMONAUK. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:974649.
Aug 11, 2021, 9:15 AM CDTWind63 mphWATERMAN
Record
  • Aug 11, 2021, 9:15 AM CDT. Wind, 63 mph, WATERMAN. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:974650.
Aug 11, 2021, 9:16 AM CDTWind70 mphLA MOILLE
Record
  • Aug 11, 2021, 9:16 AM CDT. Wind, 70 mph, LA MOILLE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:973387.
Aug 11, 2021, 9:17 AM CDTWind69 mphSANDWICH
Record
  • Aug 11, 2021, 9:17 AM CDT. Wind, 69 mph, SANDWICH. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:974653.
Aug 11, 2021, 9:18 AM CDTWind69 mphPLANO
Record
  • Aug 11, 2021, 9:18 AM CDT. Wind, 69 mph, PLANO. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:974652.
Aug 11, 2021, 9:19 AM CDTWind69 mphMILLINGTON
Record
  • Aug 11, 2021, 9:19 AM CDT. Wind, 69 mph, MILLINGTON. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:978329.
Aug 11, 2021, 9:22 AM CDTWind69 mphLITTLE ROCK
Record
  • Aug 11, 2021, 9:22 AM CDT. Wind, 69 mph, LITTLE ROCK. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:977516.
Aug 11, 2021, 9:24 AM CDTWind68 mphPLANO
Record
  • Aug 11, 2021, 9:24 AM CDT. Wind, 68 mph, PLANO. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:fd166dcc2d7d4d7284467ae172153bb7b80c022a5fceca89522d12d512f6cfb8.
Aug 11, 2021, 9:24 AM CDTWind68 mphPLANO
Record
  • Aug 11, 2021, 9:24 AM CDT. Wind, 68 mph, PLANO. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:975728.
Aug 11, 2021, 9:26 AM CDTWind64 mph(ARR) AURORA MUNICIPAL AIRPORT
Record
  • Aug 11, 2021, 9:26 AM CDT. Wind, 64 mph, (ARR) AURORA MUNICIPAL AIRPORT. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:975727.
Aug 11, 2021, 9:28 AM CDTWind64 mph2 WNW SUGAR GROVE
Record
  • Aug 11, 2021, 9:28 AM CDT. Wind, 64 mph, 2 WNW SUGAR GROVE. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:e195f5619fddbe2d8cfdd34c8a956efc33a94fb58f8ee16f4992ebb31757f880.
Aug 11, 2021, 9:28 AM CDTWind69 mph(ARR) AURORA MUNICIPAL AIRPORT
Record
  • Aug 11, 2021, 9:28 AM CDT. Wind, 69 mph, (ARR) AURORA MUNICIPAL AIRPORT. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:978323.
Aug 11, 2021, 9:28 AM CDTWind63 mphOSWEGO
Record
  • Aug 11, 2021, 9:28 AM CDT. Wind, 63 mph, OSWEGO. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:978341.
Aug 11, 2021, 9:30 AM CDTWind60 mph(RFD) ROCKFORD AIRPORT
Record
  • Aug 11, 2021, 9:30 AM CDT. Wind, 60 mph, (RFD) ROCKFORD AIRPORT. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:975729.
Aug 11, 2021, 9:30 AM CDTWind63 mphBOULDER HILL
Record
  • Aug 11, 2021, 9:30 AM CDT. Wind, 63 mph, BOULDER HILL. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:975736.
Aug 11, 2021, 9:31 AM CDTWind60 mphROCKFORD AIRPORT
Record
  • Aug 11, 2021, 9:31 AM CDT. Wind, 60 mph, ROCKFORD AIRPORT. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:2c1fcda494113a9d294e0eb148d0f7545a20ce68b14f3afd7f223d1a2d63cd63.
Aug 11, 2021, 9:33 AM CDTWind63 mphAURORA
Record
  • Aug 11, 2021, 9:33 AM CDT. Wind, 63 mph, AURORA. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:977508.
Aug 11, 2021, 9:34 AM CDTWind69 mphNORTH AURORA
Record
  • Aug 11, 2021, 9:34 AM CDT. Wind, 69 mph, NORTH AURORA. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:978313.
Aug 11, 2021, 9:35 AM CDTWind68 mph3 WSW MONTGOMERY
Record
  • Aug 11, 2021, 9:35 AM CDT. Wind, 68 mph, 3 WSW MONTGOMERY. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:0b436baea9b8d6599ab369bdc25e31e2c9d45cb430ec281e029a68c68e6e2a61.
Aug 11, 2021, 9:35 AM CDTWind63 mphAURORA
Record
  • Aug 11, 2021, 9:35 AM CDT. Wind, 63 mph, AURORA. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:977504.
Aug 11, 2021, 9:35 AM CDTWind68 mphMONTGOMERY
Record
  • Aug 11, 2021, 9:35 AM CDT. Wind, 68 mph, MONTGOMERY. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:977514.
Aug 11, 2021, 9:36 AM CDTWind65 mph2 NW PLAINFIELD
Record
  • Aug 11, 2021, 9:36 AM CDT. Wind, 65 mph, 2 NW PLAINFIELD. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:e7c09816d9a39807e52e17aea032f225a66f16689dba2a3d7145cdc6c237e589.
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.