Right now
The most recent data we hold from NOAA 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.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 11 June 2026 at 00:45 UTC. It is kept here as a record.
No stronger detection stands among the 48 recorded within 20 km of this point since 17 March 2026 — 5 others scored the same. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued June 10 at 6:42PM CDT until June 10 at 7:45PM CDT by NWS St Louis MO
Urban PEI: 17,520 within a heuristic 50 km radius; not unique people.
Nearby, since 17 March 2026
- July 21, 2026 · score 34 · 1.7 km
- June 10, 2026 · score 58 · 5.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 58 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) | 58 / 100 |
| Legacy data-support index | 0.79/1 |
| Coordinates | 40.1144, -92.4224 |
| Nearest City | Kirksville (16 km) |
| Urban exposure index (PEI) | 17.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-10T23:42:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.434fb4d74f23a0e3b2e06879c087f33e |
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: 2026-06-10T23:42:00.000Z.
First archived: 2026-06-10T23:45:14.712Z. 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 | Knox, MO; Adair, MO; Macon, MO |
| Headline | Tornado Warning issued June 10 at 6:42PM CDT until June 10 at 7:45PM CDT by NWS St Louis MO |
| Expires | 2026-06-10T19:45:00-05:00 |
| SenderName | NWS St Louis MO |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.434fb4d74f23a0e3b2e06879c087f33e7785449f.001.1","noaa_urn:oid:2.49.0.1.840.0.5e01dea80a72199155a510a4107f5dfa407e890f.001.1"] |
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.
Review the area, threshold and delivery channel in your account.
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