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Illinois · Official NOAA Storm Data

Mason County Storm Activity

Wind, hail, and tornado activity from official NOAA sources (NWS & SPC) · Last 180 days · Updated Sep 11, 2026

Mason County, Illinois has recorded tornado activity: official National Weather Service (NWS) and Storm Prediction Center (SPC) records list 3 tornado reports among 21 severe weather events here in the last 180 days, alongside 5 hail reports with hail up to 2" and 13 high-wind reports with gusts up to 75 mph. The most recent recorded storm activity was in August 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.

21
Events (180d)
5
Hail
13
Wind
3
Tornado
2"
Max hail
75
Max wind (mph)
August 2026
Most recent

What the radar showed

Radar snapshot during the Apr 16, 2026 tornado event near 1 NNW Forest City, Mason County, Illinois, with NWS warning polygons
NEXRAD radar at the moment of the Apr 16, 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.

Last 30 days in Mason County

Current NEXRAD radar over Mason County, Illinois with recent storm report locations
Current radar over the Mason County area, with storm reports from the past 7 days plotted. Refreshes throughout the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.
August 2026 1 storm day · 1 NWS warning — wind to 55 mph Exact dates & locations in app →

Recent storms — full detail available in the app

Storm activity from the last 30 days is summarized at the county level on this page. Exact locations, radar snapshots, and official warning boundaries for recent events are available with a free account.

See the specifics — 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.

Saturday, July 18, 2026

1 NWS warning — wind gusts up to 50 mph

NEXRAD radar during the Saturday, July 18, 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.

“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

NEXRAD radar during the Monday, June 8, 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.

“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

NEXRAD radar during the Monday, May 18, 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.

Sunday, May 3, 2026

1 SPC verified storm report — hail up to 1"

NEXRAD radar during the Sunday, May 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 16, 2026

4 SPC verified storm reports — 3 tornado reports

NEXRAD radar during the Thursday, April 16, 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

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 in August 2026. Official NWS and SPC records show 21 severe weather events in Mason County over the last 180 days. Exact dates and locations for recent storms are available in the app with a free account.

Has there been hail in Mason County recently?

Yes — 5 hail reports in the last 180 days, with hail up to 2" 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.

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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 our HailyDB engine 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.