Right now
The most recent data we hold from NOAA arrived 5 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
8 other detections within 20 km in the last 24 hours, the nearest 3 km from here.
This alert expired on 30 September 2026 at 21:49 UTC. It is kept here as a record.
No stronger detection stands among the 23 recorded within 20 km of this point since 10 March 2026 — 6 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 September 30 at 4:39PM CDT until September 30 at 4:45PM CDT by NWS Wichita KS
Urban PEI: 15,717 within a heuristic 50 km radius; not unique people.
Nearby, since 10 March 2026
- October 1, 2026 · score 46 · 15.7 km
- September 21, 2026 · score 28 · 15.7 km
- September 20, 2026 · score 40 · 15.7 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 v5. 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 | 38.5000, -98.9800 |
| Nearest City | Great Bend (25 km) |
| Urban exposure index (PEI) | 15.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-30T21:39:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.ed23d4e810886fce4a389897cfa3229597cc2edd.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: 2026-09-30T21:39:00.000Z.
First archived: 2026-09-30T21:34:58.364Z. Material modification: 2026-09-30T21:46:10.176Z.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2 retained revisions changed source fields this page does not show; the index, severity and version stayed the same.
Score Breakdown
Technical Details
| Event | Tornado Warning |
| MessageId | urn:oid:2.49.0.1.840.0.ed23d4e810886fce4a389897cfa3229597cc2edd.001.1 |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Barton, KS |
| Headline | Tornado Warning issued September 30 at 4:39PM CDT until September 30 at 4:45PM CDT by NWS Wichita KS |
| Expires | 2026-09-30T16:49:00-05:00 |
| SenderName | NWS Wichita KS |
| HasExactCoords | true |
| Spc ReportType | tornado |
| Spc Speed | UNK |
| Spc Location | 1 SE Ash Valley |
| Spc County | Pawnee |
| Spc State | KS |
| Spc Comments | Storm chaser report of a tornado with live feed video. (DDC) |
| Iem TypeSummary | Tornado |
| Iem LsrCode | T |
| Iem LsrType | TORNADO |
| Iem City | 3 SSW Ash Valley |
| Iem County | Pawnee |
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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