Right now
The most recent data we hold from NOAA arrived 2 hours 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 13 September 2026 at 03:00 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. The last comparable one was on 12 September 2026. 14 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued September 12 at 8:05PM CDT until September 12 at 10:00PM 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 19, 2026 · 0.0 km
- September 13, 2026 · score 58 · 0.0 km
- August 7, 2026 · 0.0 km
How we know
3 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 | 0.91/1 |
| Coordinates | 35.5000, -97.1000 |
| Nearest City | Shawnee (24 km) |
| Urban exposure index (PEI) | 1.1M within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-09-13T01:05:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.2bd71262a1a9f4c57a970a43c51b7369eab25d43.002.1 |
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: 2026-09-13T01:05:00.000Z.
First archived: 2026-09-13T01:59:59.337Z. 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 Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Alfalfa, OK; Blaine, OK; Canadian, OK; Custer, OK; Dewey, OK; Ellis, OK; Garfield, OK; Harper, OK; Kingfisher, OK; Logan, OK; Major, OK; Noble, OK; Payne, OK; Roger Mills, OK; Woods, OK; Woodward, OK |
| Headline | Severe Thunderstorm Watch issued September 12 at 8:05PM CDT until September 12 at 10:00PM CDT by NWS Norman OK |
| Expires | 2026-09-12T22:00:00-05:00 |
| SenderName | NWS Norman OK |
| HasExactCoords | false |
| Spc ReportType | hail |
| Spc Speed | 100 |
| Spc Location | 1 NNW Oklahoma City |
| Spc County | Oklahoma |
| Spc State | OK |
| Spc Comments | (OUN) |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 1 NNW Oklahoma City |
| Iem County | Oklahoma |
| Iem State | OK |
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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