McHenry County Storm Activity
Wind, hail, and tornado activity from official NOAA sources (NWS & SPC) · Last 12 months · Updated Sep 11, 2026
McHenry County, Illinois has recorded tornado activity: official National Weather Service (NWS) and Storm Prediction Center (SPC) records list 1 tornado report among 44 severe weather events here in the last 12 months, alongside 4 hail reports with hail up to 1.5" and 39 high-wind reports with gusts up to 76 mph. The most recent recorded storm activity was on Aug 12, 2026. This page updates daily: every event comes straight from official NOAA data — no estimates, no modeling, just the record.
What the radar showed
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Check an address free →Storm log — the official record, day by day
Events older than 30 days, as recorded by the National Weather Service and Storm Prediction Center. Excerpts are quoted directly from official warnings and verified reports.
Wednesday, August 12, 2026
1 SPC verified storm report
“Power poles downed blocking the road. (LOT)”
- Wind Unknown Algonquin SPC verified report
Sunday, June 28, 2026
2 NWS warnings — wind gusts up to 55 mph
“WHAT...For the Wind Advisory, southeast wind gusts up to 45 to 55 mph. For the Heat Advisory, heat index values around 105 expected. WHERE...DuPage, Kane, Lake IL, and McHenry Counties. WHEN...For the Wind Advisory, until 8 PM CDT this evening. For the Heat Advisory, from noon Monday to 10 PM CDT Wednesday. IMPACTS...Gusty winds will blow around unsecured objects.”
“WHAT...For the Wind Advisory, southeast wind gusts up to 45 to 55 mph. For the Heat Advisory, heat index values around 105 expected. WHERE...DuPage, Kane, Lake IL, and McHenry Counties. WHEN...For the Wind Advisory, until 8 PM CDT this evening. For the Heat Advisory, from noon Monday to 10 PM CDT Wednesday. IMPACTS...Gusty winds will blow around unsecured objects.”
- Wind 55 mph McHenry County NWS severe weather mention
- Wind 55 mph McHenry County NWS severe weather mention
Wednesday, June 24, 2026
3 SPC verified storm reports — hail up to 1.5", 1 tornado report
“McHenry County EMA reports roof damage to barn along Harmony Road near Brier Hill Road. Video shared to social media shows likely tornado with lofted debris in the vici (LOT)”
“Public report of 1.5 inch hail near Huntly. Relayed via mping. (LOT)”
- Tornado Tornado 3 WSW Huntley SPC verified report
- Hail 1.5" 2 E Huntley SPC verified report
- Hail 1" 1 SSW Lake in the Hills SPC verified report
Thursday, June 11, 2026
2 SPC verified storm reports — wind gusts up to 60 mph
“Large branches broken near Fleming Road and Thompson Road. Time estimated by radar. (LOT)”
- Wind 60 mph 2 WNW Crystal Lake SPC verified report
- Wind Unknown 3 NW Bull Valley SPC verified report
Wednesday, June 10, 2026
3 SPC verified storm reports — wind gusts up to 60 mph
“Trained spotter measured wind gust at Rt 176 and Franklinville Road east of Marengo. Time estimated by radar. (LOT)”
“Multiple large branches broken in the Johnsburg area. Relayed via social media. Time estimated by radar. (LOT)”
- Wind 60 mph 2 NE Union SPC verified report
- Wind Unknown Johnsburg SPC verified report
- Wind Unknown 1 NE Huntley SPC verified report
Monday, April 27, 2026
2 NWS warnings — wind gusts up to 60 mph
“WHAT...Southeast winds 25 to 35 mph with gusts up to 60 mph. WHERE...De Kalb, Central Cook, DuPage, Kane, Lake IL, McHenry, and Northern Cook Counties. WHEN...Until 4 PM CDT this afternoon. IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.”
“WHAT...Southeast winds 20 to 25 mph with gusts up to 50 mph expected. WHERE...Portions of north central and northeast Illinois and northwest Indiana. WHEN...Until 4 PM CDT this afternoon. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. ADDITIONAL DETAILS...The potential exists for brief localized gusts up to 55 to 60 mph.”
- Wind 60 mph McHenry County NWS severe weather mention
- Wind 60 mph McHenry County NWS severe weather mention
Thursday, April 16, 2026
2 SPC verified storm reports — wind gusts up to 76 mph
“IL DOT station on Harmony Road west of Riley recorded 76 mph wind gust. (LOT)”
“63 mph gust near Alden Road and IL-173. Relayed via amateur radio. Time estimated by radar. (LOT)”
- Wind 76 mph 5 ENE Herbert SPC verified report
- Wind 63 mph 4 WSW Hebron SPC verified report
Tuesday, April 14, 2026
1 SPC verified storm report — hail up to 1"
“Report from mPING: Quarter (1.00 in.). (LOT)”
- Hail 1" 4 S Walworth SPC verified report
Monday, April 13, 2026
2 SPC verified storm reports — hail up to 1", wind gusts up to 63 mph
- Wind 63 mph 1 W Harvard SPC verified report
- Hail 1" 1 NE Huntley SPC verified report
Wednesday, April 1, 2026
2 SPC verified storm reports
“Tree uprooted and metal street sign blown over. Time estimated from radar. (LOT)”
“Tree downed onto a house on the 600 block of South Jefferson Street in Woodstock. Time estimated from radar. (LOT)”
- Wind Unknown 2 W Pistakee Highlands SPC verified report
- Wind Unknown Woodstock SPC verified report
Friday, March 13, 2026
3 NWS warnings — wind gusts up to 60 mph
“WHAT...West winds 30 to 35 mph with gusts up to 60 mph occurring. WHERE...Portions of north central and northeast Illinois and northwest Indiana. WHEN...Until 4 PM CDT this afternoon. IMPACTS...Damaging winds may blow down tree limbs and power lines. Power outages are possible. Travel will be difficult, especially for high profile vehicles.”
“WHAT...West winds 30 to 35 mph with gusts up to 60 mph expected. WHERE...Portions of north central and northeast Illinois and northwest Indiana. WHEN...Until 4 PM CDT this afternoon. IMPACTS...Damaging winds may blow down tree limbs and power lines. Power outages are possible. Travel will be difficult, especially for high profile vehicles.”
- Wind 60 mph McHenry County NWS severe weather mention
- Wind 60 mph McHenry County NWS severe weather mention
- Wind 50 mph McHenry County NWS severe weather mention
Thursday, March 12, 2026
3 NWS warnings — wind gusts up to 60 mph
“WHAT...West winds 30 to 35 mph with gusts up to 60 mph expected. WHERE...Portions of north central and northeast Illinois and northwest Indiana. WHEN...From 1 AM to 4 PM CDT Friday. IMPACTS...Damaging winds can blow down tree limbs and power lines. Power outages are possible. Travel will be difficult, especially for high profile vehicles.”
“WHAT...Southwest winds 25 to 35 mph with gusts up to 60 mph expected. WHERE...Portions of northeast Illinois and northwest Indiana. WHEN...From 1 AM to 4 PM CDT Friday. IMPACTS...Damaging winds can blow down tree limbs and power lines. Power outages are possible. Travel will be difficult, especially for high profile vehicles.”
- Wind 60 mph McHenry County NWS severe weather mention
- Wind 60 mph McHenry County NWS severe weather mention
- Wind 60 mph McHenry County NWS severe weather mention
Wednesday, February 18, 2026
1 NWS warning — wind gusts up to 50 mph
“...RED FLAG WARNING EXPANDED TO INCLUDE CHICAGO METRO... Conditions will turn very dry and windy this afternoon, making conditions supportive of brush fire spread. Even with rainfall last night generally 0.05 to 0.15 of an inch across northeastern Illinois, the combination of warm, dry, and windy conditions will cause fine fuels to dry out by early afternoon.”
- Wind 50 mph McHenry County NWS severe weather mention
Monday, December 29, 2025
1 NWS warning — wind gusts up to 55 mph
“WHAT...West winds 25 to 35 mph with gusts of 45 to 55 mph early this morning, easing to occasional gusts to around 45 mph by mid morning. WHERE...Northern and central Illinois and extreme northwest Indiana WHEN...Until noon CST today. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”
- Wind 55 mph McHenry County NWS severe weather mention
Sunday, December 28, 2025
3 NWS warnings — wind gusts up to 55 mph
“WHAT...West winds 25 to 35 mph with gusts of 45 to 55 mph expected. WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. WHEN...Until 3 PM CST /4 PM EST/ Monday. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”
“WHAT...West winds 25 to 35 mph with gusts of 45 to 55 mph expected. WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. WHEN...From 6 PM CST /7 PM EST/ this evening to 3 PM CST /4 PM EST/ Monday. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”
- Wind 55 mph McHenry County NWS severe weather mention
- Wind 55 mph McHenry County NWS severe weather mention
- Wind 55 mph McHenry County NWS severe weather mention
Saturday, December 27, 2025
2 NWS warnings — wind gusts up to 55 mph
“WHAT...West winds 25 to 35 mph with gusts up to 50 mph expected. A few gusts to 55 mph possible. WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. WHEN...From 6 PM CST /7 PM EST/ Sunday to 6 PM CST /7 PM EST/ Monday. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”
“WHAT...West winds 25 to 35 mph with gusts up to 50 mph expected. A few gusts to 55 mph possible. WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. WHEN...From 6 PM CST /7 PM EST/ Sunday to 6 PM CST /7 PM EST/ Monday. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”
- Wind 55 mph McHenry County NWS severe weather mention
- Wind 55 mph McHenry County NWS severe weather mention
Wednesday, November 26, 2025
2 NWS warnings — wind gusts up to 60 mph
“WHAT...West winds 25 to 35 mph with gusts up to 50 mph expected. WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. WHEN...Until 9 PM CST /10 PM EST/ this evening. IMPACTS...Gusty winds will blow around unsecured objects, including holiday decorations. Tree limbs could be blown down and a few power outages may result.”
“WHAT...West winds 20 to 30 mph with gusts up to 50 to 55 mph occurring. WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. WHEN...Until 9 PM CST /10 PM EST/ this evening. IMPACTS...Gusty winds will blow around unsecured objects including holiday decorations. Tree limbs could be blown down and a few power outages may result.”
- Wind 60 mph McHenry County NWS severe weather mention
- Wind 55 mph McHenry County NWS severe weather mention
Tuesday, November 25, 2025
7 NWS warnings — wind gusts up to 60 mph
“WHAT...West winds 25 to 35 mph with gusts up to 50 mph expected. WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. WHEN...From 3 AM CST /4 AM EST/ to 9 PM CST /10 PM EST/ Wednesday. IMPACTS...Gusty winds will blow around unsecured objects, including holiday decorations. Tree limbs could be blown down and a few power outages may result.”
“WHAT...West winds 25 to 35 mph with gusts up to 50 mph expected. WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. WHEN...From 3 AM CST /4 AM EST/ to 9 PM CST /10 PM EST/ Wednesday. IMPACTS...Gusty winds will blow around unsecured objects, including holiday decorations. Tree limbs could be blown down and a few power outages may result.”
- Wind 60 mph McHenry County NWS severe weather mention
- Wind 60 mph McHenry County NWS severe weather mention
- Wind 60 mph McHenry County NWS severe weather mention
- Wind 60 mph McHenry County NWS severe weather mention
- Wind 60 mph McHenry County NWS severe weather mention
- Wind 60 mph McHenry County NWS severe weather mention
- Wind 60 mph McHenry County NWS severe weather mention
Sunday, September 21, 2025
2 SPC verified storm reports
“Report of trees down in Lakemoor near IL 120. Time estimated by radar. (LOT)”
“Corrects the timing of previous tstm wnd dmg report from 1 NNE Bull Valley. Report of power line wires down in roadway. Time estimated by radar. (LOT)”
- Wind Unknown Lakemoor SPC verified report
- Wind Unknown 1 NNE Bull Valley SPC verified report
Today's severe weather outlook
Common questions
When was the last severe storm in McHenry County, IL?
The most recent recorded event was on Aug 12, 2026. Official NWS and SPC records show 44 severe weather events in McHenry County over the last 12 months. Exact dates and locations for recent storms are available in the app with a free account.
Has there been hail in McHenry County recently?
Yes — 4 hail reports in the last 12 months, with hail up to 1.5" recorded.
How do I check whether a specific address was affected?
Create a free IDOLCheck account and run an address check. It shows verified storm reports and official NWS warning boundaries around any specific property — county-level pages like this one only tell part of the story.