Midwest Storm Outbreak Brings Tornadoes, Hail and Damaging Winds
Severe thunderstorms swept across parts of the Midwest on Wednesday, June 17, leaving behind reports of structural damage, downed trees, power line damage, large hail, and tornadoes.
The worst impacts appeared to stretch from Iowa through Illinois and into Indiana as a line of storms moved east. Central Illinois saw multiple reported tornado touchdowns, including near Effingham and Charleston. Tornado-related damage was also reported in parts of central and south-central Indiana, including areas near Martinsville and Bloomington.
Flooding added to the impact in several areas. Flood Warnings and Flash Flood Warnings were issued for parts of west-central and southern Indiana, while torrential rain caused street flooding in Chicago.
Large hail and strong winds were also major concerns. Preliminary reports included hail up to around 3 inches in Illinois, along with measured wind gusts near 78 mph in Cedar Rapids, Iowa, and at Decatur Airport in Illinois.
Actionable Analytics on EigenPrism
Post-Event
Severe Thunderstorm Datasets
All EigenPrism users can assess the impact of this tornado that occurred on June 17, 2026, using the following report template:
This report template consists of:
- The first page consists of damage survey footprints from June 17, 2026, from the NWS. Other tornado damage survey footprints from NWS will be available for this event in EigenPrism’s model catalog as soon as NWS releases them.
- The second page consists of 24-hr Tornado Consolidated Reports from June 18, 2026, 11:59 GMT from NOAA.
- The last page of the report template consists of the 24-hr hail MESH swath footprint from NSSL as of June 17, 2026
Canopy Weather
Tornado
Subscribers of Canopy Weather in EigenPrism can assess the impact of the tornado using the following event footprints from June 17, 2026
Hail
Subscribers of Canopy Weather in EigenPrism can assess the impact of the Hail using the following event footprints from June 17, 2026.
Wind
Subscribers of Canopy Weather in EigenPrism can assess the impact of the wind using the following event footprints from June 17, 2026.
Daily CONUS Peak Wind Gusts for June 17, 2026
Forecast
Severe Thunderstorm Datasets
All EigenPrism users can assess the forecast for this severe weather using the following report template:
This report template enables you to assess the severe weather forecast based on the data from NOAA, NWS, and Adiabat. The footprints in the template display the following:
- Conditional Tornado, Hail & Wind Day 1 Outlooks
- WPC 3-Day Excessive Rainfall Outlook
- NA 5-Day & 3-Day Flood Potential
- US Flood Outlook
The pages auto-update with the latest available data.
Alerts
Users who have alerts set on their exposures for the relevant event sets like those from NWS and Adiabat will receive alerts (if the event footprints impact these exposures).
To learn more about how to set an alert on a specific event set, check out this help center article.
Feel free to contact us at Prism.Support@eigenrisk.com or reach out directly to your Customer Success Manager with any questions or concerns. Our team is here to assist you with setting alerts, understanding report templates, and maximizing the actionable insights available through EigenPrism®.
Jun 16 | Severe Storm Outbreak Threatens the Midwest With Tornadoes, Hail, and Damaging Winds
A severe thunderstorm outbreak fueled by a strong storm system could bring the risk of long-lived tornadoes, large hail, flash flooding, and damaging wind gusts in the Midwest US on Wednesday.
The main threat is expected from Missouri toward Indiana during the afternoon and early evening. Parts of central and northern Illinois and northwestern Indiana are under a Level 4 out of 5 severe storm risk, while nearby areas are mostly under a Level 3 risk.
Some storms may develop into supercells, which can produce stronger, longer-lasting tornadoes. Tornadoes may also form within other storm systems across parts of the Midwest and Plains.
Large hail and destructive winds are also possible. By Wednesday night, storms may merge into a larger line, making damaging wind gusts the main concern. Some gusts could reach around 75 mph as the system moves toward western Ohio and areas farther east. By Thursday, the severe weather risk is expected to shift into the Northeast and Mid-Atlantic, stretching from northern New England toward Virginia and west into parts of Kentucky.
Actionable Analytics on EigenPrism
Forecast
Severe Thunderstorm Datasets
All EigenPrism users can assess the forecast for this severe weather using the following report template:
This report template enables you to assess the severe weather forecast based on the data from NOAA, NWS, and Adiabat. The footprints in the template display the following:
- Conditional Tornado, Hail & Wind Day 1 Outlooks
- WPC 3-Day Excessive Rainfall Outlook
- NA 5-Day & 3-Day Flood Potential
- US Flood Outlook
The pages auto-update with the latest available data.
Alerts
Users who have alerts set on their exposures for the relevant event sets like those from NWS and Adiabat will receive alerts (if the event footprints impact these exposures).
To learn more about how to set an alert on a specific event set, check out this help center article.
Feel free to contact us at Prism.Support@eigenrisk.com or reach out directly to your Customer Success Manager with any questions or concerns. Our team is here to assist you with setting alerts, understanding report templates, and maximizing the actionable insights available through EigenPrism®.
Not an EigenPrism User? Here’s a Quick Way to Check ZIP-Level Impact
For underwriters, brokers, and portfolio managers who need fast visibility into impacted ZIP codes, we’ve built a tool called ZIP Response on our website. It’s a free, no-login tool that highlights the top ZIP codes that are most impacted during active events, such as hurricanes, floods, wildfires, and severe storms.
You can request the complete ZIP list by simply filling out a short form and get it delivered straight to your inbox.
If you’d like to explore the impacted ZIP codes for this event, visit ZIP Response.
Or Contact us, to have more info on this.
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