Right now
The most recent data we hold from SPC arrived 2 hours ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Reported by SPC 90 days ago.
What the source measured
SPC reported: Hail 300 in near 1 SE Arthur, Douglas, IL. (ILX)
Urban PEI: 240,970 within a heuristic 50 km radius; not unique people.
How we know
One source: SPC. Not yet confirmed by a second, independent source.
Our own score for this event is 49 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 | High |
| Calamity Score (ours) | 49 / 100 |
| Legacy data-support index | 0.68/1 |
| Coordinates | 39.7100, -88.4600 |
| Nearest City | Mattoon (27 km) |
| Urban exposure index (PEI) | 241.0K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-06-18T05:31:25.426Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
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: spc. Occurrence: 2026-06-18T05:31:25.426Z.
First archived: 2026-06-18T05:33:04.248Z. 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
| ReportType | hail |
| Speed | 300 |
| Location | 1 SE Arthur |
| County | Douglas |
| State | IL |
| Comments | (ILX) |
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.
Review the area, threshold and delivery channel in your account.
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