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Storm ActivityIllinois Storm ActivityStephenson County, IL
Illinois · Official NOAA Storm Data

Stephenson County Hail Map & Storm Reports

Hail, wind, and tornado reports from official NOAA sources (NWS & SPC) · Last 12 months · Updated Sep 13, 2026

Stephenson County, Illinois has recorded tornado activity: official National Weather Service (NWS) and Storm Prediction Center (SPC) records list 2 tornado reports among 71 severe weather events here in the last 12 months, alongside 11 hail reports with hail up to 3" and 58 high-wind reports with gusts up to 60 mph. The most recent recorded storm activity was on Aug 11, 2026. This page updates daily: every event comes straight from official NOAA data — no estimates, no modeling, just the record.

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

Stephenson County hail map

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

71
Events (12 mo)
11
Hail
58
Wind
2
Tornado
3"
Max hail
60
Max wind (mph)
Aug 11, 2026
Most recent

What the radar showed

Radar snapshot during the Apr 17, 2026 tornado event near 3 NNE Kent, Stephenson County, Illinois, with NWS warning polygons
NEXRAD radar at the moment of the Apr 17, 2026 tornado event (Tornado) near 3 NNE Kent. 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.

Hail history for an address in Stephenson County

See address-level storm exposure — verified hail and wind reports plus official warning boundaries around any specific property, including the most recent 30 days. Free account, takes under a minute.

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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.

Tuesday, August 11, 2026

4 SPC verified storm reports

“6-7 inch diameter tree limbs snapped and a measured wind gust of 55 mph. Time estimated by radar. (DVN)”

SPC verified report · Freeport

“Power lines down and they are smoking and sparking. Time estimated from radar. (DVN)”

SPC verified report · 2 ESE Loran

Friday, July 3, 2026

2 SPC verified storm reports · 1 NWS warning — hail up to 1"

NEXRAD radar during the Friday, July 3, 2026 storm activity in Stephenson 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.

“Estimate of golf ball size hail. Picture of dent to vehicle. Report was delayed. (DVN)”

SPC verified report · 2 ESE Scioto Mills

“At 614 PM CDT, Doppler radar was tracking strong thunderstorms along a line extending from near St. Donatus to Canton to near Olin to near Tiffin. Movement was east at 30 mph. Hazard: Winds in excess of 40 mph, minor flooding and penny size hail. Impact: Gusty winds could cause minor tree limb damage and blow around unsecured objects. Minor damage to outdoor objects is possible.”

NWS severe weather mention · Stephenson County

Wednesday, June 24, 2026

1 SPC verified storm report

Wednesday, June 17, 2026

1 NWS warning — wind gusts up to 50 mph

NEXRAD radar during the Wednesday, June 17, 2026 storm activity in Stephenson 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 744 PM CDT, Doppler radar was tracking a line of strong thunderstorms along a line extending from Brodhead to Winslow. Movement was east at 50 mph. Hazard: Wind gusts up to 50 mph. Impact: Strong winds could break small tree limbs and blow around unsecured objects. Locations impacted include... Davis, Winslow, Rock City, Rock Grove, Oneco, Orangeville, Afolkey, and Lake Summerset.”

NWS severe weather mention · Stephenson County

Wednesday, June 10, 2026

2 SPC verified storm reports

“Large tree limbs downed over powerlines. Picture sent via social media. Time estimated by radar. (DVN)”

SPC verified report · 4 N Davis

“Large limb came down and is blocking the southbound lane. (DVN)”

SPC verified report · Cedarville

Monday, May 18, 2026

1 NWS warning — wind gusts up to 50 mph

“Strong south to southeast winds may develop on the northern and western edge of a cluster of showers and thunderstorms tracking across southeast Iowa into west-central Illinois. Winds could gust between 40 to 50 mph at times through the mid to late morning. Unsecured outdoor objects may be blown around and the strongest gusts could bring down tree branches.”

NWS severe weather mention · Stephenson County

Sunday, May 17, 2026

1 NWS warning — hail up to 0.88"

“At 1017 AM CDT, Doppler radar was tracking a strong thunderstorm near Stockton, or 14 miles west of Freeport, moving northeast at 45 mph. Hazard: Wind gusts up to 50 mph and nickel size hail. Impact: Strong winds could break small tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Stephenson County

Monday, April 27, 2026

3 NWS warnings — hail up to 0.75", wind gusts up to 50 mph

NEXRAD radar during the Monday, April 27, 2026 storm activity in Stephenson 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.

“Gusty east to southeasterly winds are expected through the early afternoon as an area of rain continues to shift eastward into portions of central and eastern Illinois. Occasional gusts between 40 to 50 mph can be expected. Use extra caution if traveling, especially in high profile vehicles. The strong winds could blow around loose objects and bring down tree branches.”

NWS severe weather mention · Stephenson County

“Gusty winds are expected late this morning into the early afternoon as an area of rain and embedded thunderstorms continues to shift eastward through portions of eastern Iowa and northwest Illinois. Winds will increase on the western edge of the shield of precipitation with gusts between 40 to 50 mph possible out of an east to southeasterly direction.”

NWS severe weather mention · Stephenson County

Friday, April 17, 2026

4 SPC verified storm reports — hail up to 3", 1 tornado report

NEXRAD radar during the Friday, April 17, 2026 storm activity in Stephenson 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 high-end EF2... possible multi-vortex... tornado with estimated peak winds around 130 mph started along Highway 20... SW of Lena IL... and tracked through Lena before (DVN)”

SPC verified report · 3 NNE Kent

“Report from mPING: Tea Cup (3.00 in.). (DVN)”

SPC verified report · 2 W Dakota

Tuesday, April 14, 2026

1 NWS warning — wind gusts up to 50 mph

NEXRAD radar during the Tuesday, April 14, 2026 storm activity in Stephenson 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 117 AM CDT, Doppler radar was tracking strong thunderstorms along a line extending from Albany to near Lena to near Elizabeth. Movement was southeast at 40 mph. Hazard: Wind gusts up to 50 mph. Impact: Strong winds could break small tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Stephenson County

Monday, April 13, 2026

2 SPC verified storm reports — 1 tornado report

NEXRAD radar during the Monday, April 13, 2026 storm activity in Stephenson 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 tornado formed briefly in the occlusion of an RFD northwest of Pearl City. It heavily damaged and destroyed several farm outbuildings... lifted a large farm wagon int (DVN)”

SPC verified report · 2 NW Pearl City

“Trees down blocking roads. Tornado possible. (DVN)”

SPC verified report · 2 N Pearl City

Sunday, April 12, 2026

1 NWS warning — wind gusts up to 50 mph

“Strong south-southwesterly winds will continue this afternoon through the early evening hours, with occasional gusts as high as 45 mph. There are also some developing showers and a few isolated thunderstorms this afternoon that could help generate stronger wind gusts up to 50 mph. If traveling on east-to-west oriented roads, be prepared for gusty crosswinds, especially in high profile vehicles.”

NWS severe weather mention · Stephenson County

Wednesday, April 8, 2026

1 NWS warning — wind gusts up to 50 mph

“Strong south to southwest winds with sustained speeds of 20 to 30 MPH and occasional gusts up to 50 MPH will continue into the late afternoon today. If traveling on east to west roads be prepared for gusty crosswinds especially in high profile vehicles. secure all loose objects. Winds will begin to diminish late this afternoon.”

NWS severe weather mention · Stephenson County

Monday, March 16, 2026

1 NWS warning — wind gusts up to 60 mph

“WHAT...Northwest winds 25 to 35 mph with gusts up to 60 mph. WHERE...Bureau, Putnam, Carroll, Henry IL, Jo Daviess, Stephenson, and Whiteside Counties. WHEN...Until 6 AM CDT early this morning. IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.”

NWS severe weather mention · Stephenson County

Sunday, March 15, 2026

5 NWS warnings — wind gusts up to 60 mph

“WHAT...Northwest winds 25 to 35 mph with gusts of 50 to 60 mph expected. WHERE...Bureau, Putnam, Carroll, Henry IL, Jo Daviess, Stephenson, and Whiteside Counties. WHEN...Until 1 PM CDT Monday. IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.”

NWS severe weather mention · Stephenson County

“WHAT...Northwest winds 25 to 35 mph with gusts of 50 to 60 mph expected. WHERE...Bureau, Putnam, Carroll, Henry IL, Jo Daviess, Stephenson, and Whiteside Counties. WHEN...From 7 PM this evening to 1 PM CDT Monday. IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.”

NWS severe weather mention · Stephenson County

Saturday, March 14, 2026

2 NWS warnings — wind gusts up to 60 mph

“WHAT...Blizzard conditions expected. Total snow accumulations between 4 and 8 inches. Winds gusting as high as 50 to 60 mph. WHERE...Portions of northwest Illinois and east central Iowa. WHEN...From 7 PM Sunday to 4 PM CDT Monday. IMPACTS...Travel could be very difficult. Widespread blowing snow could significantly reduce visibility.”

NWS severe weather mention · Stephenson County

“WHAT...Blizzard conditions expected. Total snow accumulations between 4 and 8 inches. Winds gusting as high as 50 to 60 mph. WHERE...Portions of northwest Illinois and east central Iowa. WHEN...From 7 PM Sunday to 4 PM CDT Monday. IMPACTS...Travel could be very difficult. Widespread blowing snow could significantly reduce visibility.”

NWS severe weather mention · Stephenson County

Friday, March 13, 2026

4 NWS warnings — wind gusts up to 60 mph

“WHAT...Northwest winds 25 to 35 mph with gusts up to 60 mph. WHERE...Portions of north central and northwest Illinois and east central Iowa. WHEN...Until 3 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.”

NWS severe weather mention · Stephenson County

“WHAT...West winds 25 to 35 mph with gusts up to 60 mph. WHERE...Portions of north central and northwest Illinois and east central Iowa. WHEN...Until 3 PM CDT this afternoon. IMPACTS...Travel will be difficult, especially for high profile vehicles. Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”

NWS severe weather mention · Stephenson County

Thursday, March 12, 2026

5 NWS warnings — wind gusts up to 60 mph

“WHAT...For the Wind Advisory, southwest winds 25 to 30 mph with gusts up to 45 mph expected. For the High Wind Warning, west winds 25 to 30 mph with gusts up to 60 mph expected. WHERE...Portions of north central and northwest Illinois and east central Iowa. WHEN...For the Wind Advisory, from 10 PM this evening to 4 AM CDT Friday. For the High Wind Warning, from 4 AM to 3 PM CDT Friday.”

NWS severe weather mention · Stephenson County

“WHAT...For the Wind Advisory, southwest winds 25 to 30 mph with gusts up to 45 mph expected. For the High Wind Warning, west winds 25 to 30 mph with gusts up to 60 mph expected. WHERE...Portions of north central and northwest Illinois and east central Iowa. WHEN...For the Wind Advisory, from 10 PM this evening to 4 AM CDT Friday. For the High Wind Warning, from 4 AM to 3 PM CDT Friday.”

NWS severe weather mention · Stephenson County

Monday, March 9, 2026

5 SPC verified storm reports — hail up to 2.75"

NEXRAD radar during the Monday, March 9, 2026 storm activity in Stephenson 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.

“Report from mPING: Quarter (1.00 in.). (DVN)”

SPC verified report · 2 W Dakota

Saturday, March 7, 2026

1 NWS warning — wind gusts up to 55 mph

NEXRAD radar during the Saturday, March 7, 2026 storm activity in Stephenson 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 1233 AM CST, Doppler radar was tracking strong winds accompanying showers and a few thunderstorms. Movement was northeast at 45 mph. Hazard: Wind gusts of 50 to 55 mph. Impact: Strong winds could break tree limbs, knock down weak trees and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Stephenson County

Wednesday, February 18, 2026

7 NWS warnings — wind gusts up to 50 mph

“WHAT...West winds 25 to 30 mph with gusts up to 50 mph. WHERE...Portions of northwest Illinois and east central and northeast Iowa. WHEN...Until 6 PM CST 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 · Stephenson County

“...Critical Fire Weather Conditions Continue... AFFECTED AREA...Portions of eastern Iowa, northwest Illinois, and northeast Missouri. TIMING...Until 8 PM CST this evening. WINDS...West-southwest winds 25 to 30 mph, with gusts up to 50 mph. RELATIVE HUMIDITY...As low as 15 percent. IMPACTS...Any fire that develops will quickly spread out of control. Fire behavior is expected to be extreme.”

NWS severe weather mention · Stephenson County

Tuesday, February 17, 2026

2 NWS warnings — wind gusts up to 50 mph

“...Critical Fire Weather Conditions Possible Wednesday... The National Weather Service in the Quad Cities continues a Fire Weather Watch for strong winds, low relative humidity, and plentiful dry vegetation. AFFECTED AREA...Portions of eastern Iowa and northwest Illinois TIMING...From Wednesday morning through Wednesday evening. WINDS...Southwest 20 to 30 mph with gusts up to 50 mph.”

NWS severe weather mention · Stephenson County

“WHAT...West winds 20 to 30 mph with gusts up to 50 mph expected. WHERE...In Illinois, Carroll, Jo Daviess, and Stephenson Counties. In Iowa, Benton, Jackson, Jones, Linn, Buchanan, Delaware, and Dubuque Counties. WHEN...From 9 AM to 5 PM CST Wednesday. 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 · Stephenson County

Sunday, December 28, 2025

8 NWS warnings — wind gusts up to 55 mph

“WHAT...Snow. Additional snow accumulations up to two inches along and north of Highway 30. Strong northwest winds gusting up to 45 to 55 mph may lead to significant blowing snow in open and rural areas, and to sudden reductions in visibility. WHERE...Portions of northwest Illinois and east central and northeast Iowa. WHEN...Until 9 AM CST Monday.”

NWS severe weather mention · Stephenson County

“WHAT...Snow. Additional snow accumulations between 1 and 3 inches north of Highway 30 and an inch or less to the south. Strong northwest winds gusting up to 45 to 55 mph may lead to significant blowing snow in open and rural areas, and to sudden reductions in visibility. WHERE...Portions of northwest Illinois and east central and northeast Iowa. WHEN...Until 9 AM CST Monday.”

NWS severe weather mention · Stephenson County

Saturday, December 27, 2025

2 NWS warnings — wind gusts up to 55 mph

“WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. For the Wind Advisory, northwest winds 25 to 35 mph with gusts up to 45 to 55 mph expected. WHERE...Portions of northwest Illinois and east central and northeast Iowa. WHEN...For the Dense Fog Advisory, until noon CST Sunday. For the Wind Advisory, from 2 PM Sunday to 6 PM CST Monday.”

NWS severe weather mention · Stephenson County

“WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. For the Wind Advisory, northwest winds 25 to 35 mph with gusts up to 45 to 55 mph expected. WHERE...Portions of northwest Illinois and east central and northeast Iowa. WHEN...For the Dense Fog Advisory, until noon CST Sunday. For the Wind Advisory, from 2 PM Sunday to 6 PM CST Monday.”

NWS severe weather mention · Stephenson County

Thursday, December 18, 2025

1 NWS warning — wind gusts up to 50 mph

“At 941 AM CST, Doppler radar was tracking line of showers along a line extending from near Spragueville to Rock Island to near Little York to near Bowen. Movement was east at 40 mph. Hazard: Wind gusts up to 50 mph. Impact: Strong winds could break small tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Stephenson County

Wednesday, December 10, 2025

1 NWS warning — wind gusts up to 55 mph

“WHAT...Snow and reduced visibilities from blowing snow in any snow showers. Total snow accumulations under one inch. West to northwest winds 20 to 30 mph, gusting 40 to 50 mph. Gusts up to 55 mph are possible across portions of eastern Iowa. WHERE...Portions of northwest Illinois and east central and northeast Iowa. WHEN...Until 9 AM CST this morning.”

NWS severe weather mention · Stephenson County

Tuesday, December 9, 2025

2 NWS warnings — wind gusts up to 55 mph

“WHAT...Mixed precipitation expected. Total snow accumulations under one inch and ice accumulations around a light glaze possible. West to northwest winds 20 to 30 mph, gusting 40 to 50 mph. Gusts up to 55 mph are possible across portions of eastern Iowa. WHERE...Portions of northwest Illinois and east central and northeast Iowa. WHEN...Until 9 AM CST Wednesday.”

NWS severe weather mention · Stephenson County

“WHAT...Mixed precipitation expected. Total snow accumulations under one inch and ice accumulations around a light glaze possible. West to northwest winds 20 to 30 mph, gusting 40 to 50 mph. Gusts up to 55 mph are possible across portions of eastern Iowa. WHERE...Portions of northwest Illinois and east central and northeast Iowa. WHEN...From 6 PM this evening to 9 AM CST Wednesday.”

NWS severe weather mention · Stephenson 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 Stephenson County, IL?

The most recent recorded event was on Aug 11, 2026. Official NWS and SPC records show 71 severe weather events in Stephenson 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 Stephenson County recently?

Yes — 11 hail reports in the last 12 months, with hail up to 3" 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 Stephenson 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 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.
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