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 10 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 7:36PM CDT until June 11 at 8:00PM CDT by NWS Chicago IL
An estimated 257,618 people live within 50 km of this point.
Nearby, since 10 March 2026
- August 12, 2026 · score 48 · 10.6 km
- March 11, 2026 · score 72 · 12.0 km
- June 13, 2026 · score 48 · 13.4 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 79 % 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 | 79% |
| Coordinates | 41.0876, -87.4950 |
| Nearest City | Kankakee (31 km) |
| Population Exposed | 257.6K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-06-12T00:36:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.18ec7e8e99330edb15e1656b559b0688 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Lake, IN; Porter, IN; Ford, IL; Iroquois, IL and 1 more areas |
| Headline | Tornado Warning issued June 11 at 7:36PM 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 | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.18ec7e8e99330edb15e1656b559b068839e62152.002.1","noaa_urn:oid:2.49.0.1.840.0.dc58fe2558a87ee15eba1d213ee123c553f0b2f7.001.1","noaa_urn:oid:2.49.0.1.840.0.e280dbba7fb69c80c9efc21602037a1aa64518be.001.1","noaa_urn:oid:2.49.0.1.840.0.fc5c81e025b81f5ecdde7a917b18535d7def2684.001.1","noaa_urn:oid:2.49.0.1.840.0.2b6a5f1dcd1872ea3c3a19cba5bd407d54867392.001.1","noaa_urn:oid:2.49.0.1.840.0.1c9be113a3f8cb124a81669c5590e5d1d4133e0f.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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 67/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.