Right now
The most recent data we hold from NOAA arrived 3 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 00:30 UTC. It is kept here as a record.
It is the 27th strongest of the 47 detections recorded within 20 km of this point since 10 March 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 11 at 6:46PM CDT until June 11 at 7:30PM CDT by NWS Chicago IL
An estimated 18,342 people live within 50 km of this point.
Nearby, since 10 March 2026
- March 10, 2026 · score 58 · 9.0 km
- August 10, 2026 · score 63 · 11.4 km
- March 11, 2026 · score 63 · 12.4 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 28 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 | Medium |
| Calamity Score (ours) | 28 / 100 |
| Our confidence | 80% |
| Coordinates | 41.1170, -88.6592 |
| Nearest City | Ottawa (30 km) |
| Population Exposed | 18.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-11T23:46:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.a491bfee9f106bb3c2ec967f0cc78576 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Will, IL; Champaign, IL; De Witt, IL; McLean, IL; Macon, IL; Piatt, IL; Ford, IL; Livingston, IL and 5 more areas |
| Headline | Severe Thunderstorm Warning issued June 11 at 6:46PM CDT until June 11 at 7:30PM CDT by NWS Chicago IL |
| Expires | 2026-06-11T19:30:00-05:00 |
| SenderName | NWS Chicago IL |
| HasExactCoords | true |
| MergedCount | 8 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.a491bfee9f106bb3c2ec967f0cc7857669cfe566.001.1","noaa_urn:oid:2.49.0.1.840.0.713cebf93a47be5b69bab40610034c1d0ed293c3.001.1","noaa_urn:oid:2.49.0.1.840.0.4f182b9e8ed571aa83f3a96a7f28a1c5c151f087.001.1","noaa_urn:oid:2.49.0.1.840.0.1fefa8128c0200006ee3c374b57016737a3fee0d.001.1","noaa_urn:oid:2.49.0.1.840.0.61d607570114adcdfa276900315a22995d0a19e1.001.1","noaa_urn:oid:2.49.0.1.840.0.f0bf7f86555402fc05671fc923acb31eaaa719cb.001.1","noaa_urn:oid:2.49.0.1.840.0.423b7a8a703d3c667d99a1e70bcf747597978803.001.1","noaa_urn:oid:2.49.0.1.840.0.fd874ccf631b3d8e84452d27f7bc0c74ef0610f6.001.1"] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
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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