This alert expired on 12 June 2026 at 01:45 UTC. It is kept here as a record.
It is the 4th strongest of the 65 detections recorded within 20 km of this point since 13 April 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued June 11 at 8:23PM CDT until June 11 at 8:45PM CDT by NWS Chicago IL
An estimated 571,235 people live within 50 km of this point.
Nearby, since 13 April 2026
- August 11, 2026 · score 72 · 2.4 km
- July 4, 2026 · score 43 · 8.3 km
- July 27, 2026 · score 72 · 9.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 72 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | critical |
| Calamity Score (ours) | 72 / 100 |
| Our confidence | 80% |
| Coordinates | 41.4855, -87.0184 |
| Nearest City | Valparaiso (4 km) |
| Population Exposed | 571.2K within 50 km |
| Impact Tier | catastrophic |
| Timestamp | 2026-06-12T01:23:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.18503f1753c2a9e5eac080f0fbee978a |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Jasper, IN; Newton, IN; Porter, IN; DuPage, IL and 6 more areas |
| Headline | Tornado Warning issued June 11 at 8:23PM CDT until June 11 at 8:45PM CDT by NWS Chicago IL |
| Expires | 2026-06-11T20:45:00-05:00 |
| SenderName | NWS Chicago IL |
| HasExactCoords | true |
| MergedCount | 9 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.18503f1753c2a9e5eac080f0fbee978a1e690f21.002.1","noaa_urn:oid:2.49.0.1.840.0.96a8741794022d304f93eb5d64ab22b725aecf72.001.1","noaa_urn:oid:2.49.0.1.840.0.20a79cc0e07ab19339ed73ef1b4769b5517541f2.001.1","noaa_urn:oid:2.49.0.1.840.0.60aa9230f849e4d9631356725cf0086247199b1c.001.1","noaa_urn:oid:2.49.0.1.840.0.d24c97d489dc2098d8c6067778713291702e3461.001.1","noaa_urn:oid:2.49.0.1.840.0.45120cb738bae10e7cea4a9139fb16843e36c75f.001.1","noaa_urn:oid:2.49.0.1.840.0.6979fb4be7d10731d5f71c2496610133e75910d1.001.1","noaa_urn:oid:2.49.0.1.840.0.5ba710b33c9a74192245e6b33382c083876660e7.001.1","noaa_urn:oid:2.49.0.1.840.0.61869f7b1fc6e387f7ae95a706fa746ff76c1915.001.1"] |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 72/100, near Valparaiso (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.