Right now
The most recent data we hold from NOAA arrived 2 minutes ago, and this point is in it.
3 other detections within 20 km in the last 24 hours, the nearest 9 km from here.
This alert expired on 21 September 2026 at 04:30 UTC. It is kept here as a record.
It is the 48th strongest of the 140 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 20 at 11:04PM CDT until September 20 at 11:30PM CDT by NWS Lincoln IL
Urban PEI: 39,309 within a heuristic 50 km radius; not unique people.
Nearby, since 15 March 2026
- June 8, 2026 · score 28 · 0.7 km
- July 27, 2026 · score 34 · 10.2 km
- March 16, 2026 · score 58 · 23.4 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 28 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 | Medium |
| Calamity Score (ours) | 28 / 100 |
| Legacy data-support index | 0.91/1 |
| Coordinates | 39.3280, -88.1880 |
| Nearest City | Charleston (19 km) |
| Urban exposure index (PEI) | 39.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-21T04:04:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.72d29c3769592a3e4a27dcaf98a11b4b25e73ef6.001.1 |
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: 2026-09-21T04:04:00.000Z.
First archived: 2026-09-21T04:10:37.581Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-21T04:26:56.687Z · data_change
Index 28 → 28; severity medium → medium; version 5 → 5.
2026-09-21T04:16:09.714Z · data_change
Index 28 → 28; severity medium → medium; version 5 → 5.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Coles, IL; Cumberland, IL |
| Headline | Severe Thunderstorm Warning issued September 20 at 11:04PM CDT until September 20 at 11:30PM CDT by NWS Lincoln IL |
| Expires | 2026-09-20T23:30:00-05:00 |
| SenderName | NWS Lincoln IL |
| HasExactCoords | true |
| Spc ReportType | wind |
| Spc Speed | 64 |
| Spc Location | 1 SW Olney Noble Airpor |
| Spc County | Richland |
| Spc State | IL |
| Spc Comments | AWOS station KOLY Olney Noble AP Station Elevation: 471 ft. (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
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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