Right now
The most recent data we hold from NOAA arrived 30 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 20 September 2026 at 22:30 UTC. It is kept here as a record.
It is the 8th strongest of the 48 detections recorded within 20 km of this point since 27 April 2026. The last comparable one was on 14 September 2026. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 20 at 5:04PM CDT until September 20 at 5:30PM CDT by NWS Springfield MO
Urban PEI: 186,193 within a heuristic 50 km radius; not unique people.
Nearby, since 27 April 2026
- July 11, 2026 · score 37 · 7.3 km
- September 6, 2026 · score 37 · 9.1 km
- September 20, 2026 · score 37 · 15.3 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 37 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 | Medium |
| Calamity Score (ours) | 37 / 100 |
| Legacy data-support index | 0.85/1 |
| Coordinates | 37.3483, -93.7200 |
| Nearest City | Republic (33 km) |
| Urban exposure index (PEI) | 186.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-20T22:04:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.a8914799dd88df5f5b027961bde642646f021d72.001.1 |
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: 2026-09-20T22:04:00.000Z.
First archived: 2026-09-20T22:21:24.009Z. 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 | Dade, MO |
| Headline | Severe Thunderstorm Warning issued September 20 at 5:04PM CDT until September 20 at 5:30PM CDT by NWS Springfield MO |
| Expires | 2026-09-20T17:30:00-05:00 |
| SenderName | NWS Springfield MO |
| HasExactCoords | true |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 2 SSE Clever |
| Spc County | Christian |
| Spc State | MO |
| Spc Comments | A large tree was downed near Mt Carmel road and State Highway K south of Clever. (SGF) |
| MergedSources | [{"id":"spc_wind_37.01_-93.46_2","source":"spc","severity":"medium","severityValue":45,"timestamp":1789941600000,"latitude":37.01,"longitude":-93.46}] |
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.
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