Right now
The most recent data we hold from NOAA arrived 8 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
2 other detections within 20 km in the last 24 hours, the nearest 20 km from here.
This alert expired on 21 September 2026 at 00:45 UTC. It is kept here as a record.
No stronger detection stands among the 168 recorded within 20 km of this point since 16 March 2026 — 21 others scored the same. The last comparable one was on 20 September 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued September 20 at 7:16PM CDT until September 20 at 7:45PM CDT by NWS Lincoln IL
Nearby, since 16 March 2026
- September 21, 2026 · score 46 · 2.4 km
- June 12, 2026 · score 16 · 7.9 km
- May 19, 2026 · score 22 · 8.1 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 46 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 v5. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Critical |
| Calamity Score (ours) | 46 / 100 |
| Legacy data-support index | 0.70/1 |
| Coordinates | 38.8575, -88.4588 |
| Nearest City | Mattoon (70 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-09-21T00:16:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.fa02c117bc91cd3dae20145df636ebde81b5b28b.002.1 |
Physical priority index · v5. 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: 2026-09-21T00:16:00.000Z.
First archived: 2026-09-21T00:20:35.915Z. 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 | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Clay, IL |
| Headline | Tornado Warning issued September 20 at 7:16PM CDT until September 20 at 7:45PM CDT by NWS Lincoln IL |
| Expires | 2026-09-20T19:45:00-05:00 |
| SenderName | NWS Lincoln IL |
| HasExactCoords | true |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 2 N Newton |
| Spc County | Jasper |
| Spc State | IL |
| Spc Comments | Wind blew some debris into a field. Photo provided. (ILX) |
| Iem TypeSummary | D |
| Iem City | 2 N Newton |
| Iem County | Jasper |
| Iem State | IL |
| Iem Wfo | ILX |
| Iem Remark | Wind blew some debris into a field. Photo provided. |
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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