Right now
The most recent data we hold from NOAA arrived 1 minute 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 21 June 2026 at 23:30 UTC. It is kept here as a record.
No stronger detection stands among the 124 recorded within 20 km of this point since 27 April 2026 — 5 others scored the same. Another comparable one was recorded here earlier the same day. 14 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued June 21 at 5:52PM CDT until June 21 at 6:30PM CDT by NWS Lincoln IL
Urban PEI: 18,012 within a heuristic 50 km radius; not unique people.
Nearby, since 27 April 2026
- May 16, 2026 · score 34 · 4.3 km
- June 16, 2026 · score 22 · 10.2 km
- May 12, 2026 · score 34 · 11.6 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 | 38.8080, -88.0462 |
| Nearest City | Vincennes (47 km) |
| Urban exposure index (PEI) | 18.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-21T22:52:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.865a28099c7fe9bce7933357da822d61 |
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: 2026-06-21T22:52:00.000Z.
First archived: 2026-06-21T22:55:34.954Z. 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 | Clay, IL; Jasper, IL; Richland, IL; Knox, IN; Wayne, IL and 10 more areas |
| Headline | Tornado Warning issued June 21 at 5:52PM CDT until June 21 at 6:30PM CDT by NWS Lincoln IL |
| Expires | 2026-06-21T18:30:00-05:00 |
| SenderName | NWS Lincoln IL |
| HasExactCoords | true |
| MergedCount | 13 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.865a28099c7fe9bce7933357da822d61305761b4.001.1","noaa_urn:oid:2.49.0.1.840.0.afb7d64c35b39a93847a9410eb57290eba40f002.002.1","noaa_urn:oid:2.49.0.1.840.0.4ec90387046601318ed11e6de1b9577989a3d420.001.1","noaa_urn:oid:2.49.0.1.840.0.a79724d104f8f27fb2c85b5b7133b82aa4e8d189.001.1","noaa_urn:oid:2.49.0.1.840.0.16e087a7c5b10b52fa3f4b719eaa23a5f970d069.002.1","noaa_urn:oid:2.49.0.1.840.0.64d4ee15be95df811fbd93a216660e09108dc6e1.001.1","noaa_urn:oid:2.49.0.1.840.0.d1121bbd0cfb67b56d65b7549e4589e19ea3abf3.001.1","noaa_urn:oid:2.49.0.1.840.0.291a7336f1d3f519b8a5aa11875e830b7afd125c.001.1","noaa_urn:oid:2.49.0.1.840.0.93c593fef671adacb31e6a2ba760cb107aea7861.001.1","noaa_urn:oid:2.49.0.1.840.0.9abd94b6325c4f086d49db878c4e67541f28b1d1.001.1","noaa_urn:oid:2.49.0.1.840.0.ec16833cdbb50d281581951ea5c2332ebc47f3b5.001.1","noaa_urn:oid:2.49.0.1.840.0.35f584790363f67a6daf1fa28e033aa35bcbe499.001.1","noaa_urn:oid:2.49.0.1.840.0.e257fcf207f2a09e99a77bc5c3cd90a60fc6ab85.001.1"] |
| Iem TypeSummary | D |
| Iem City | Sullivan |
| Iem County | Sullivan |
| Iem State | IN |
| Iem Wfo | IND |
| Iem Remark | Corrects previous tstm wnd dmg report from Sullivan. Several tree limbs blown down accompanied by approximately 70 mph winds. |
| MergedSources | [{"id":"iem_G_39.100_-87.410_1782080340000","source":"iem","severity":"low","severityValue":25,"timestamp":1782080340000,"latitude":39.1,"longitude":-87.41},{"id":"iem_D_39.100_-87.410_1782080340000","source":"iem","severity":"low","severityValue":25,"timestamp":1782080340000,"latitude":39.1,"longitude":-87.41}] |
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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