Right now
The most recent data we hold from NOAA arrived 6 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
11 other detections within 20 km in the last 24 hours, the nearest 7 km from here.
This alert expired on 15 September 2026 at 21:30 UTC. It is kept here as a record.
No stronger detection stands among the 120 recorded within 20 km of this point since 3 April 2026 — 7 others scored the same. Another comparable one was recorded here earlier the same day. 10 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 15 at 4:02PM CDT until September 15 at 4:30PM CDT by NWS Wichita KS
Urban PEI: 419,628 within a heuristic 50 km radius; not unique people.
Nearby, since 3 April 2026
- August 27, 2026 · score 37 · 11.8 km
- September 15, 2026 · score 37 · 12.2 km
- June 26, 2026 · score 43 · 12.8 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 49 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 | High |
| Calamity Score (ours) | 49 / 100 |
| Legacy data-support index | 0.90/1 |
| Coordinates | 37.5556, -97.2061 |
| Nearest City | Derby (6 km) |
| Urban exposure index (PEI) | 419.6K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-09-15T21:02:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.c4f1ecf1515b4f65de9d109f100016a4059f04ec.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: 2026-09-15T21:02:00.000Z.
First archived: 2026-09-15T21:04:48.438Z. 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 | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Butler, KS; Cowley, KS; Sedgwick, KS; Sumner, KS; Butler, KS; Sedgwick, KS |
| Headline | Severe Thunderstorm Warning issued September 15 at 4:02PM CDT until September 15 at 4:30PM CDT by NWS Wichita KS |
| Expires | 2026-09-15T16:30:00-05:00 |
| SenderName | NWS Wichita KS |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.c4f1ecf1515b4f65de9d109f100016a4059f04ec.001.1","noaa_urn:oid:2.49.0.1.840.0.b78e167c91b9d6cd18aacf8c3e55f629a0082e80.001.1"] |
| Spc ReportType | wind |
| Spc Speed | 75 |
| Spc Location | Mcconnell Air Force Bas |
| Spc County | Sedgwick |
| Spc State | KS |
| Spc Comments | Measured at McConnell AFB. (ICT) |
| Iem TypeSummary | G |
| Iem Magnitude | 59 |
| Iem Unit | MPH |
| Iem City | Mcconnell Air Force Bas |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
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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