Right now
The most recent data we hold from NOAA arrived 18 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 10 August 2026 at 04:45 UTC. It is kept here as a record.
No stronger detection stands among the 59 recorded within 20 km of this point since 16 March 2026 — one other scored the same. Another comparable one was recorded here earlier the same day. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued August 9 at 10:58PM CDT until August 9 at 11:45PM CDT by NWS Lincoln IL
Urban PEI: 113,004 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- May 16, 2026 · score 43 · 7.0 km
- June 12, 2026 · score 16 · 20.5 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 67 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 | Critical |
| Calamity Score (ours) | 67 / 100 |
| Legacy data-support index | 0.85/1 |
| Coordinates | 41.1550, -89.4440 |
| Nearest City | North Peoria (50 km) |
| Urban exposure index (PEI) | 113.0K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-08-10T03:58:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.fc2de75624ff7a9b3b1823def147a645 |
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: 2026-08-10T03:58:00.000Z.
First archived: 2026-08-10T03:59:38.552Z. 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 | Peoria, IL; Bureau, IL |
| Headline | Tornado Warning issued August 9 at 10:58PM CDT until August 9 at 11:45PM CDT by NWS Lincoln IL |
| Expires | 2026-08-09T23:45:00-05:00 |
| SenderName | NWS Lincoln IL |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.fc2de75624ff7a9b3b1823def147a645f685073f.001.1","noaa_urn:oid:2.49.0.1.840.0.12bc84c65c40ccdd66d10d0f5608280f2845e708.001.1"] |
| Iem TypeSummary | T |
| Iem City | 4 SSW Annawan |
| Iem County | Henry |
| Iem State | IL |
| Iem Wfo | DVN |
| MergedSources | [{"id":"iem_T_41.340_-89.930_1786327080000","source":"iem","severity":"low","severityValue":25,"timestamp":1786327080000,"latitude":41.34,"longitude":-89.93}] |
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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