Right now
The most recent data we hold from NOAA arrived 22 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 00:45 UTC. It is kept here as a record.
It is the 6th strongest of the 37 detections recorded within 20 km of this point since 31 March 2026. The last comparable one was on 11 June 2026. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 11 at 7:12PM CDT until June 11 at 7:45PM CDT by NWS Chicago IL
Urban PEI: 843,376 within a heuristic 50 km radius; not unique people.
Nearby, since 31 March 2026
- August 11, 2026 · score 52 · 9.5 km
- August 12, 2026 · score 52 · 10.3 km
- July 4, 2026 · score 48 · 10.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 41 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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) | 41 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 41.3239, -88.3521 |
| Nearest City | Shorewood (25 km) |
| Urban exposure index (PEI) | 843.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-12T00:12:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.a2b813d2eddf63f2448e594dc7b9e520 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-06-12T00:12:00.000Z.
First archived: 2026-06-12T00:14:23.121Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | De Kalb, IL; McLean, IL; Tazewell, IL; Woodford, IL; De Witt, IL; Logan, IL; Macon, IL and 8 more areas |
| Headline | Severe Thunderstorm Warning issued June 11 at 7:12PM CDT until June 11 at 7:45PM CDT by NWS Chicago IL |
| Expires | 2026-06-11T19:45:00-05:00 |
| SenderName | NWS Chicago IL |
| HasExactCoords | true |
| MergedCount | 11 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.a2b813d2eddf63f2448e594dc7b9e520d02241ed.002.1","noaa_urn:oid:2.49.0.1.840.0.8a361e490080101dede196c769457eb593a6eb79.001.1","noaa_urn:oid:2.49.0.1.840.0.415bcbf68edf0517171d39ed97d439e5316a0afb.001.1","noaa_urn:oid:2.49.0.1.840.0.4d1c33754eedd131fdd17b33a7c1c4371796c542.001.1","noaa_urn:oid:2.49.0.1.840.0.b2848ba136da44487e4358df23af1c8e691f5b6e.001.1","noaa_urn:oid:2.49.0.1.840.0.a534933837aaf69629ceb319326695bd6b4b3e13.001.1","noaa_urn:oid:2.49.0.1.840.0.5e7b9f715c6a2bf68ec02c90164b6d1459c6ddad.001.1","noaa_urn:oid:2.49.0.1.840.0.58c56ce0c778d071b0d1ffe86f0ff754d4bb610e.001.1","noaa_urn:oid:2.49.0.1.840.0.713cebf93a47be5b69bab40610034c1d0ed293c3.001.1","noaa_urn:oid:2.49.0.1.840.0.fd874ccf631b3d8e84452d27f7bc0c74ef0610f6.001.1","noaa_urn:oid:2.49.0.1.840.0.784a049ec17d1160518aad7dee19c605c0fe8b0a.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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