Right now
The most recent data we hold from NOAA arrived 3 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
4 other detections within 20 km in the last 24 hours, the nearest 4 km from here.
This alert expired on 20 September 2026 at 02:30 UTC. It is kept here as a record.
It is the 4th strongest of the 61 detections recorded within 20 km of this point since 10 April 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 19 at 8:48PM CDT until September 19 at 9:30PM CDT by NWS Wichita KS
Urban PEI: 19,216 within a heuristic 50 km radius; not unique people.
Nearby, since 10 April 2026
- June 9, 2026 · score 34 · 2.6 km
- June 11, 2026 · score 58 · 15.9 km
- June 11, 2026 · score 58 · 16.2 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 40 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) | 40 / 100 |
| Legacy data-support index | 0.91/1 |
| Coordinates | 38.4120, -97.1080 |
| Nearest City | Newton (45 km) |
| Urban exposure index (PEI) | 19.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-20T01:48:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.c1a6b9846954b7985ec9a21753dbc50b42e7eb4c.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: 2026-09-20T01:48:00.000Z.
First archived: 2026-09-20T01:50:46.705Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-20T01:56:16.252Z · data_change
Index 40 → 40; severity high → high; version 5 → 5.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Marion, KS |
| Headline | Severe Thunderstorm Warning issued September 19 at 8:48PM CDT until September 19 at 9:30PM CDT by NWS Wichita KS |
| Expires | 2026-09-19T21:30:00-05:00 |
| SenderName | NWS Wichita KS |
| HasExactCoords | true |
| Spc ReportType | hail |
| Spc Speed | 200 |
| Spc Location | Mcpherson |
| Spc County | McPherson |
| Spc State | KS |
| Spc Comments | Most of the hail was quarter to golf ball with a few 2 inch stones. (ICT) |
| Iem TypeSummary | G |
| Iem Magnitude | 81 |
| Iem Unit | MPH |
| Iem City | 4 NNW Hope |
| Iem County | Dickinson |
| Iem State | KS |
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.
Want to know when something happens in this area?