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Illinois · Official NOAA Storm Data

Johnson County Hail Map & Storm Reports

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

Has it hailed in Johnson County, Illinois recently? Official National Weather Service (NWS) and Storm Prediction Center (SPC) records say yes: 14 hail reports with hail up to 1.25", among 51 severe weather events logged here in the last 12 months, together with 37 high-wind reports with gusts up to 60 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 Johnson County, Illinois showing the county boundary and surrounding cities
Johnson County, Illinois. Map © Mapbox © OpenStreetMap · County boundary: US Census Bureau.

Johnson County hail map

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

51
Events (12 mo)
14
Hail
37
Wind
0
Tornado
1.25"
Max hail
60
Max wind (mph)
August 2026
Most recent

What the radar showed

Radar snapshot during the Apr 27, 2026 hail event near Goreville, Johnson County, Illinois, with NWS warning polygons
NEXRAD radar at the moment of the Apr 27, 2026 hail event (1.25") near Goreville. 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 Johnson County

Current NEXRAD radar over Johnson County, Illinois with recent storm report locations
Current radar over the Johnson 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 — hail to 0.88" 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.

Wednesday, August 12, 2026

1 NWS warning — hail up to 0.25"

“At 833 PM CDT, Doppler radar was tracking strong thunderstorms along a line extending from 7 miles west of Goreville to Olive Branch to 8 miles northwest of Bloomfield. Movement was east at 40 mph. Hazard: Wind gusts up to 40 to 50 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible.”

NWS severe weather mention · Johnson County

Monday, July 20, 2026

1 NWS warning — wind gusts up to 50 mph

NEXRAD radar during the Monday, July 20, 2026 storm activity in Johnson 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 1142 AM CDT, trained weather spotters reported strong thunderstorms along a line extending from near Montpelier to near Fruitland to near Riverside. Movement was southeast at 45 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 · Johnson County

Friday, July 10, 2026

1 NWS warning — wind gusts up to 50 mph

NEXRAD radar during the Friday, July 10, 2026 storm activity in Johnson 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 819 PM CDT, Doppler radar was tracking a cluster of strong thunderstorms along a line extending from near Willisville to near Pittsburg. Movement was east 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 · Johnson County

Tuesday, July 7, 2026

1 NWS warning — hail up to 0.5"

“At 430 PM CDT, Doppler radar was tracking a strong thunderstorm near New Columbia, or 11 miles southeast of Vienna, moving south at 10 mph. Hazard: Wind gusts up to 50 mph and half inch hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... New Columbia and Dixon Springs.”

NWS severe weather mention · Johnson County

Saturday, July 4, 2026

1 NWS warning — hail up to 0.5"

“At 347 PM CDT, Doppler radar was tracking a cluster of strong thunderstorms along a line extending from near Goreville to near Jonesboro. Movement was southeast at 25 mph. Hazard: Wind gusts up to 50 mph and half inch hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include...”

NWS severe weather mention · Johnson County

Friday, July 3, 2026

2 NWS warnings — hail up to 0.75"

NEXRAD radar during the Friday, July 3, 2026 storm activity in Johnson 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 653 PM CDT, Doppler radar was tracking strong thunderstorms along a line extending from near Andrew to Rochester. 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 · Johnson County

“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 · Johnson County

Thursday, June 25, 2026

1 NWS warning — hail up to 0.5"

“At 839 PM CDT, Doppler radar was tracking a strong thunderstorm over Vienna, moving northeast at 15 mph. Hazard: Wind gusts up to 50 mph and half inch hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... Vienna, Lake Of Egypt Area, Cypress, New Burnside, Buncombe, Belknap, and Simpson.”

NWS severe weather mention · Johnson County

Sunday, June 21, 2026

1 NWS warning — hail up to 0.25"

“At 157 PM CDT, Doppler radar was tracking a strong thunderstorm near Goreville, or 11 miles southwest of Marion, moving northeast at 30 mph. Hazard: Wind gusts up to 50 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... Lake Of Egypt Area.”

NWS severe weather mention · Johnson County

Friday, June 12, 2026

2 NWS warnings — hail up to 0.5", wind gusts up to 50 mph

NEXRAD radar during the Friday, June 12, 2026 storm activity in Johnson 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 line of thunderstorms is sinking southeastward across southeast Missouri, southern Illinois, southwest Indiana, and western Kentucky early this morning. Wind gusts of 40 to 50 mph, torrential downpours, and frequent lightning can be expected.”

NWS severe weather mention · Johnson County

“At 232 AM CDT, Doppler radar was tracking a strong thunderstorm 8 miles northeast of Cobden, or 9 miles southeast of Carbondale, moving east at 30 mph. Hazard: Wind gusts up to 50 mph and half inch hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include...”

NWS severe weather mention · Johnson County

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 · Johnson County

Monday, April 27, 2026

1 SPC verified storm report · 2 NWS warnings — hail up to 1.25", wind gusts up to 50 mph

NEXRAD radar during the Monday, April 27, 2026 storm activity in Johnson 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 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 · Johnson County

“At 344 PM CDT, Doppler radar was tracking showers and developing thunderstorms along a line extending from near Dongola to near Chaffee. Movement was northeast at 45 mph. This activity is a zone of concern for rapid development for severe storms in the next hour or so. Remain alert for possible warnings. Locations impacted include...”

NWS severe weather mention · Johnson County

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 · Johnson 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 · Johnson County

Monday, March 16, 2026

1 NWS warning — wind gusts up to 60 mph

“WHAT...Northwest winds 25 to 30 mph with gusts up to 60 mph. WHERE...Portions of northwest and west central Illinois, east central, northeast, and southeast Iowa, and northeast Missouri. 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 · Johnson County

Sunday, March 15, 2026

6 NWS warnings — wind gusts up to 60 mph

“WHAT...Northwest winds 25 to 35 mph with gusts of 50 to 60 mph expected. WHERE...Portions of northwest and west central Illinois, east central, northeast, and southeast Iowa, and northeast Missouri. WHEN...Until 10 AM 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 · Johnson County

“WHAT...Northwest winds 25 to 35 mph with gusts of 50 to 60 mph expected. WHERE...Portions of northwest and west central Illinois, east central, northeast, and southeast Iowa, and northeast Missouri. WHEN...Until 10 AM 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 · Johnson County

Saturday, March 14, 2026

1 NWS warning — wind gusts up to 50 mph

“WHAT...South winds 15 to 25 mph with gusts up to 40 to 50 mph. WHERE...Portions of southern Illinois, southwest Indiana, western Kentucky, and southeast Missouri. WHEN...From 10 AM CDT /11 AM EDT/ Sunday to 7 AM CDT /8 AM EDT/ 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 · Johnson County

Wednesday, March 11, 2026

1 NWS warning — wind gusts up to 50 mph

“WHAT...Southwest winds 15 to 25 mph with gusts of 40 to 50 mph. WHERE...Portions of southern Illinois, western Kentucky, and southeast Missouri. 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.”

NWS severe weather mention · Johnson County

Wednesday, March 4, 2026

1 NWS warning — hail up to 0.88"

NEXRAD radar during the Wednesday, March 4, 2026 storm activity in Johnson 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 1012 PM CST, Doppler radar was tracking a strong thunderstorm near Karnak, or near Vienna, moving northeast at 35 mph. Hazard: Nickel size hail. Impact: Minor hail damage to vegetation is possible. Locations impacted include... Vienna, Dixon Springs, New Columbia, New Burnside, Belknap, Eddyville, and Simpson. This includes Interstate 24 in Illinois between Mile Markers 12 and 25.”

NWS severe weather mention · Johnson County

Wednesday, February 18, 2026

5 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 · Johnson 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 · Johnson County

Tuesday, February 17, 2026

1 NWS warning — 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 · Johnson County

Thursday, January 8, 2026

1 NWS warning — wind gusts up to 50 mph

NEXRAD radar during the Thursday, January 8, 2026 storm activity in Johnson 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 1041 PM CST, Doppler radar was tracking gusty showers along a line extending from Darmstadt to near Cairo. Movement was northeast at 55 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 · Johnson County

Sunday, December 28, 2025

8 NWS warnings — wind gusts up to 55 mph

NEXRAD radar during the Sunday, December 28, 2025 storm activity in Johnson 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.

“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 · Johnson County

“At 614 PM CST, Doppler radar was tracking strong thunderstorms along a line extending from 6 miles west of Carrier Mills to near Morehouse. Movement was east at 45 mph. This line is close to severe and brief intensification are possible. The line is also being monitored closely for any sign of tornado potential. Hazard: Wind gusts of 50 to 55 mph.”

NWS severe weather mention · Johnson County

Saturday, December 27, 2025

6 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 · Johnson 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 · Johnson County

Tuesday, November 18, 2025

1 NWS warning — hail up to 0.75"

“At 532 PM CST, Doppler radar was tracking a strong thunderstorm near Dongola, or 13 miles southeast of Anna, moving east at 45 mph. Hazard: Wind gusts up to 40 mph and penny size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include...”

NWS severe weather mention · Johnson County

Monday, September 22, 2025

1 NWS warning — hail up to 0.5"

“At 1156 PM CDT, Doppler radar was tracking a line of thunderstorms along a line extending from Lone Tree to near Abingdon. Movement was east at 45 mph. Hazard: Winds in excess of 40 mph and half inch hail. Impact: Gusty winds could cause minor tree limb damage and blow around unsecured objects. Minor damage to outdoor objects is possible. Strong thunderstorms will be near...”

NWS severe weather mention · Johnson 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 Johnson County, IL?

The most recent recorded event was in August 2026. Official NWS and SPC records show 51 severe weather events in Johnson 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 Johnson County recently?

Yes — 14 hail reports in the last 12 months, with hail up to 1.25" 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 Johnson 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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