Right now
The most recent data we hold from NOAA arrived 2 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 12 June 2026 at 01:00 UTC. It is kept here as a record.
It is the 5th strongest of the 29 detections recorded within 20 km of this point since 11 March 2026. Another comparable one was recorded here earlier the same day. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued June 11 at 7:20PM CDT until June 11 at 8:00PM CDT by NWS Chicago IL
An estimated 191,761 people live within 50 km of this point.
Nearby, since 11 March 2026
- June 12, 2026 · score 67 · 2.4 km
- March 11, 2026 · score 72 · 11.9 km
- August 12, 2026 · score 48 · 11.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 67 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Critical |
| Calamity Score (ours) | 67 / 100 |
| Our confidence | 80% |
| Coordinates | 41.0712, -87.4767 |
| Nearest City | Kankakee (33 km) |
| Population Exposed | 191.8K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-06-12T00:20:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.b54a99e2b5f498e2c83c23888ff18bbf |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Will, IL; Lake, IN; Vermilion, IL; Lake, IN |
| Headline | Tornado Warning issued June 11 at 7:20PM CDT until June 11 at 8:00PM CDT by NWS Chicago IL |
| Expires | 2026-06-11T20:00:00-05:00 |
| SenderName | NWS Chicago IL |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b54a99e2b5f498e2c83c23888ff18bbfbb89b8fc.001.1","noaa_urn:oid:2.49.0.1.840.0.5631dd4b92979fd83b7b2c55c43dad36db3589ac.001.1","noaa_urn:oid:2.49.0.1.840.0.8c04a00754a8bcd8a4af482961095e58ff63d20e.001.1"] |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
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