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Storm Activity›Illinois Storm Activity›Mason County, IL
Illinois · Official NOAA Storm Data

Mason County Hail Map & Storm Reports

Hail, wind, and tornado reports from official NOAA sources (NWS & SPC) · Last 12 months · Updated Nov 2, 2026

Mason County, Illinois has recorded tornado activity: official National Weather Service (NWS) and Storm Prediction Center (SPC) records list 6 tornado reports among 39 severe weather events here in the last 12 months, alongside 6 hail reports with hail up to 2" and 27 high-wind reports with gusts up to 75 mph. The most recent recorded storm activity was on Aug 15, 2026. This page updates daily: every event comes straight from official NOAA data — no estimates, no modeling, just the record.

Map of Mason County, Illinois showing the county boundary and surrounding cities
Mason County, Illinois. Map © Mapbox © OpenStreetMap · County boundary: US Census Bureau.

Mason County hail map

Where hail and high-wind reports clustered across Mason County over the last 12 months. Heat shows report density and significance, not radar.

39
Events (12 mo)
6
Hail
27
Wind
6
Tornado
2"
Max hail
75
Max wind (mph)
Aug 15, 2026
Most recent

What the radar showed

Radar snapshot during the Apr 17, 2026 tornado event near 1 NNW Forest City, Mason County, Illinois, with NWS warning polygons
NEXRAD radar at the moment of the Apr 17, 2026 tornado event (Tornado) near 1 NNW Forest City. Outlined polygons are the storm-based warnings exactly as issued by the National Weather Service. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

Storm exposure for an address in Mason County

Get a free report in your folder. A city is enough if you do not have a street.

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.

Saturday, August 15, 2026

1 NWS warning — wind gusts up to 55 mph

“At 429 AM CDT, Doppler radar was tracking strong thunderstorms along a line extending from near San Jose to near Alexander. Movement was east at 50 mph. Hazard: Wind gusts of 50 to 55 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Mason County

Saturday, July 18, 2026

1 NWS warning — wind gusts up to 50 mph

“At 728 PM CDT, Doppler radar was tracking a strong thunderstorm near Mason City, moving southeast at 15 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Mason City, Athens, Greenview, Elkhart, Middletown, New Holland, Fancy Prairie, and Sweetwater.”

NWS severe weather mention · Mason County

Wednesday, June 17, 2026

1 NWS warning — wind gusts up to 50 mph

“WHAT...South winds 20 to 30 mph with gusts up to 50 mph expected. WHERE...Portions of central, east central, southeast, and west central Illinois. WHEN...From 1 PM this afternoon to 7 PM CDT this evening. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”

NWS severe weather mention · Mason County

Thursday, June 11, 2026

3 SPC verified storm reports — wind gusts up to 75 mph

NEXRAD radar during the Thursday, June 11, 2026 storm activity in Mason County, Illinois
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“Large tree down just west of Mason City near Route 10 and Route 29. Tree is approximately two feet in diameter. (ILX)”

SPC verified report · 1 W Mason City

Monday, June 8, 2026

1 NWS warning — wind gusts up to 50 mph

“At 1026 AM CDT, broadcast media reported a strong thunderstorm over Williamsville, or 9 miles east of Athens, moving northeast at 35 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Mason County

Monday, May 18, 2026

1 SPC verified storm report

Monday, May 4, 2026

1 SPC verified storm report — hail up to 1"

Friday, April 17, 2026

4 SPC verified storm reports — 3 tornado reports

NEXRAD radar during the Friday, April 17, 2026 storm activity in Mason County, Illinois
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“EF1... max wind speed 95 mph... path length 15.4 miles. The tornados path began approximately one mile north of Forest City ...along County Road 2800 E... where it firs (ILX)”

SPC verified report · 1 NNW Forest City

“EF1... peak wind speed 105 mph... path length 31.85 miles. This long track tornado spanned nearly the entire width of Mason County... starting in Bath and ending just a (ILX)”

SPC verified report · Bath

Sunday, April 12, 2026

1 NWS warning — wind gusts up to 50 mph

“Moderately strong winds out of the south to southwest will continue late this evening into the overnight hours. Expect a few sporadic gusts of 40 to 50 mph with more frequent gusts of 25 to 40 mph. These winds can make driving difficult, especially for high profile vehicles.”

NWS severe weather mention · Mason County

Friday, April 3, 2026

4 SPC verified storm reports — hail up to 2"

NEXRAD radar during the Friday, April 3, 2026 storm activity in Mason County, Illinois
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

Thursday, April 2, 2026

1 NWS warning — wind gusts up to 50 mph

“WHAT...South winds 25 to 35 mph with gusts up to 50 mph expected. WHERE...Portions of central and west central Illinois. WHEN...From noon today to 7 PM CDT this evening. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”

NWS severe weather mention · Mason County

Tuesday, March 31, 2026

1 SPC verified storm report — hail up to 1.75"

NEXRAD radar during the Tuesday, March 31, 2026 storm activity in Mason County, Illinois
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

Monday, March 16, 2026

1 NWS warning — wind gusts up to 50 mph

“WHAT...Northwest winds 25 to 35 mph with gusts up to 50 mph. WHERE...Portions of central, east central, southeast, and west central Illinois. WHEN...Until noon CDT today. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”

NWS severe weather mention · Mason County

Sunday, March 15, 2026

2 NWS warnings — wind gusts up to 55 mph

“WHAT...South winds 25 to 35 mph with gusts up to 45 to 55 mph expected today. Then switching directions to west-northwest tonight. WHERE...Portions of central, east central, southeast, and west central Illinois. WHEN...Until 10 AM CDT Monday. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”

NWS severe weather mention · Mason County

“WHAT...South winds 25 to 35 mph with gusts up to 45 to 55 mph expected late this morning and afternoon and switching west to northwest during tonight. WHERE...Portions of central, east central, southeast, and west central Illinois. WHEN...From 10 AM this morning to 7 AM CDT Monday. IMPACTS...Gusty winds will blow around unsecured objects.”

NWS severe weather mention · Mason County

Saturday, March 14, 2026

1 NWS warning — wind gusts up to 50 mph

“WHAT...South-southwest winds on Sunday shifting to the west-northwest behind a cold front Sunday night. Sustained winds of 25 to 35 mph with gusts up to 50 mph expected. WHERE...Portions of central, east central, southeast, and west central Illinois. WHEN...From 10 AM Sunday to 7 AM CDT Monday. IMPACTS...Gusty winds will blow around unsecured objects.”

NWS severe weather mention · Mason County

Friday, March 13, 2026

1 NWS warning — wind gusts up to 50 mph

“WHAT...Southwest winds will turn west at 25 to 30 mph during this morning with gusts of 40 to 50 mph into mid afternoon. WHERE...Portions of central, east central, southeast, and west central Illinois. The strongest winds will be this morning from I-74 north with gusts over 50 mph possible. WHEN...Until 4 PM CDT this afternoon. IMPACTS...Gusty winds will blow around unsecured objects.”

NWS severe weather mention · Mason County

Thursday, March 12, 2026

3 NWS warnings — wind gusts up to 50 mph

“WHAT...Southwest winds 20 to 30 mph with gusts up to 50 mph expected. WHERE...Portions of central, east central, and west central Illinois. WHEN...From 10 PM this evening to 4 PM CDT Friday. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”

NWS severe weather mention · Mason County

“WHAT...Southwest winds 20 to 30 mph with gusts up to 50 mph expected. WHERE...Portions of central, east central, and west central Illinois. WHEN...From 10 PM this evening to 4 PM CDT Friday. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”

NWS severe weather mention · Mason County

Wednesday, March 11, 2026

1 SPC verified storm report — 1 tornado report

NEXRAD radar during the Wednesday, March 11, 2026 storm activity in Mason County, Illinois
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“A number of irrigation pivots were overturned along the path... and several trees had branches damaged. The tornado moved northeast toward Green Valley where it snapped (ILX)”

SPC verified report · 1 SSE Forest City

Tuesday, March 10, 2026

5 SPC verified storm reports — 2 tornado reports

NEXRAD radar during the Tuesday, March 10, 2026 storm activity in Mason County, Illinois
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“Delayed public report relayed by broadcast media of a barn damaged. Time estimated by radar. (ILX)”

SPC verified report · 1 WNW Topeka

“The tornado touched down on the far east edge of Havana near Laurel Hill Cemetery... and moved northeast to near Topeka. A number of tree trunks were snapped along the (ILX)”

SPC verified report · 1 E Havana

Thursday, February 19, 2026

1 SPC verified storm report — hail up to 1.25"

NEXRAD radar during the Thursday, February 19, 2026 storm activity in Mason County, Illinois
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“Half dollar size hail at Sand Ridge State Forest. (ILX)”

SPC verified report · 4 SW Manito

Thursday, December 18, 2025

1 SPC verified storm report · 3 NWS warnings — wind gusts up to 55 mph

NEXRAD radar during the Thursday, December 18, 2025 storm activity in Mason County, Illinois
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“At 1115 AM CST, Doppler radar was tracking gusty showers along a line extending from 7 miles northwest of Henry to 6 miles southwest of Franklin. Movement was east at 50 mph. Hazard: Wind gusts of 50 to 55 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Mason County

“At 1041 AM CST, Doppler radar was tracking gusty showers along a line extending from near Elmira to Alsey. Movement was east at 50 mph. Hazard: Wind gusts of 50 to 55 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Mason County

Today's severe weather outlook

Storm Prediction Center Day 1 convective outlook — national severe weather risk map for today
Storm Prediction Center Day 1 convective outlook: categorical severe weather risk for today, updated several times daily. Source: NOAA/NWS Storm Prediction Center.

Common questions

When was the last severe storm in Mason County, IL?

The most recent recorded event was on Aug 15, 2026. Official NWS and SPC records show 39 severe weather events in Mason County over the last 12 months. Exact dates and locations for recent storms are available in the app with a free account.

Did it hail in Mason County recently?

Yes — 6 hail reports in the last 12 months, with hail up to 2" recorded. The hail map above shows where reports clustered; the storm log lists each day.

How do I see hail history for a specific address in Mason County?

Create a free IDOLCheck account and run an address check. It shows verified storm reports and official NWS warning boundaries around any specific property, including the most recent 30 days — county-level pages like this one only tell part of the story.

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Proudly AI-powered. Honestly sourced. IDOLCheck is built by HailyAI. Every storm event, magnitude, radar snapshot, and date on this page is deterministic — retrieved directly from official NOAA, National Weather Service (NWS), and Storm Prediction Center (SPC) storm records through HailyAPI and displayed exactly as reported. Quoted warning and report text is always attributed to its official source. Where the surrounding copy is not a direct quote, it was generated with AI assistance from that same verified storm data and reviewed and approved by humans before publication. AI organizes and presents the record — it never invents storm data.
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