Right now
The most recent data we hold from NOAA arrived 7 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 12 September 2026 at 21:45 UTC. It is kept here as a record.
No stronger detection stands among the 15 recorded within 20 km of this point since 10 March 2026 — 7 others scored the same. Another comparable one was recorded here earlier the same day. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 12 at 4:36PM CDT until September 12 at 4:45PM CDT by NWS Norman OK
Urban PEI: 1,089,769 within a heuristic 50 km radius; not unique people.
Nearby, since 10 March 2026
- September 12, 2026 · score 58 · 0.0 km
- June 22, 2026 · 1.7 km
- September 19, 2026 · 6.2 km
How we know
2 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 v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | High |
| Calamity Score (ours) | 58 / 100 |
| Legacy data-support index | 0.86/1 |
| Coordinates | 35.4442, -97.1027 |
| Nearest City | Shawnee (20 km) |
| Urban exposure index (PEI) | 1.1M within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-09-12T21:36:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.7d4de9b0151918b5fa7379a48878700ccb18a7f8.001.1 |
Physical priority index · v4 (historical). 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: 2026-09-12T21:36:00.000Z.
First archived: 2026-09-12T21:38:08.389Z. 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 | Kingfisher, OK; Ellis, OK; Harper, OK; Beaver, OK and 5 more areas |
| Headline | Severe Thunderstorm Warning issued September 12 at 4:36PM CDT until September 12 at 4:45PM CDT by NWS Norman OK |
| Expires | 2026-09-12T16:45:00-05:00 |
| SenderName | NWS Norman OK |
| HasExactCoords | true |
| MergedCount | 9 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.7d4de9b0151918b5fa7379a48878700ccb18a7f8.001.1","noaa_urn:oid:2.49.0.1.840.0.dba79cf1632183878f8aa881f0629db00d842081.001.1","noaa_urn:oid:2.49.0.1.840.0.4a2ba99f658e6f43084f9ffb60c7815828f1c3ef.001.1","noaa_urn:oid:2.49.0.1.840.0.d3068fed146ce8e79df822d0635c84784388f8c2.002.1","noaa_urn:oid:2.49.0.1.840.0.aad3bfdbc2881d541ff1c292950a90ee37324d5c.001.1","noaa_urn:oid:2.49.0.1.840.0.102b45df23d78e66ba8cb663cf4fa0f2db19e50d.001.1","noaa_urn:oid:2.49.0.1.840.0.dfb5ed99ef06bd7c7cf78fd652d56781c9d20f5f.001.1","noaa_urn:oid:2.49.0.1.840.0.ec4bc5b9b1f17e1580bd685017361f60c5a000e1.001.1","noaa_urn:oid:2.49.0.1.840.0.9eb5f16781d6d7a1f911b0af758f330f375fb367.001.1"] |
| Spc ReportType | hail |
| Spc Speed | 100 |
| Spc Location | 1 NNW Oklahoma City |
| Spc County | Oklahoma |
| Spc State | OK |
| Spc Comments | (OUN) |
| MergedSources | [{"id":"spc_hail_35.48_-97.52_27","source":"spc","severity":"high","severityValue":65,"timestamp":1789247400000,"latitude":35.48,"longitude":-97.52}] |
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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