Right now
The most recent data we hold from NOAA arrived 7 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 22 June 2026 at 00:15 UTC. It is kept here as a record.
No stronger detection stands among the 68 recorded within 20 km of this point since 10 March 2026 — 2 others scored the same. The last comparable one was on 16 May 2026.
What the source measured
NOAA reported: Tornado Warning issued June 21 at 6:47PM CDT until June 21 at 7:15PM CDT by NWS St Louis MO
Urban PEI: 18,012 within a heuristic 50 km radius; not unique people.
Nearby, since 10 March 2026
- March 10, 2026 · score 22 · 1.7 km
- March 10, 2026 · score 34 · 4.0 km
- March 10, 2026 · score 22 · 7.5 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
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 | 0.89/1 |
| Coordinates | 38.4822, -87.9479 |
| Nearest City | Vincennes (42 km) |
| Urban exposure index (PEI) | 18.0K within 50 km |
| Impact Tier | significant |
| Date | 2026-06-21 — time not reported by the source |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.7b994ce8477dae389fd0f0cbee102e25 |
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: 2026-06-21 — time not reported.
First archived: 2026-06-21T23:48:11.897Z. 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 | Marion, IL; Gibson, IN; Posey, IN; Vanderburgh, IN; Daviess, IN; Knox, IN and 3 more areas |
| Headline | Tornado Warning issued June 21 at 6:47PM CDT until June 21 at 7:15PM CDT by NWS St Louis MO |
| Expires | 2026-06-21T19:15:00-05:00 |
| SenderName | NWS St Louis MO |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.7b994ce8477dae389fd0f0cbee102e255f2abc51.001.1","noaa_urn:oid:2.49.0.1.840.0.a78039689f687d26535095bc70300611add055fa.002.1","noaa_urn:oid:2.49.0.1.840.0.c398487ede71ca37d14bd3b07441c65cae84008c.001.1","noaa_urn:oid:2.49.0.1.840.0.f776ddef4179ae777972544f5157d2baa01e6624.001.1","noaa_urn:oid:2.49.0.1.840.0.cd630c25aeb28bd555406ab9a282e2b8df07ca7b.001.1","noaa_urn:oid:2.49.0.1.840.0.df56befd49218ee568a8187d981ff30ef29f3a5a.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 1 SE Xenia |
| Iem County | Clay |
| Iem State | IL |
| Iem Wfo | ILX |
| MergedSources | [{"id":"iem_G_38.640_-88.670_1782082980000","source":"iem","severity":"low","severityValue":25,"timestamp":1782082980000,"latitude":38.64,"longitude":-88.67},{"id":"iem_H_38.630_-88.630_1782083280000","source":"iem","severity":"low","severityValue":25,"timestamp":1782083280000,"latitude":38.63,"longitude":-88.63}] |
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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