Right now
The most recent data we hold from NOAA arrived 63 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 June 2026 at 23:30 UTC. It is kept here as a record.
It is the 2nd strongest of the 58 detections recorded within 20 km of this point since 1 April 2026. The last comparable one was on 26 May 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 12 at 6:53PM EDT until June 12 at 7:30PM EDT by NWS Greenville-Spartanburg SC
Urban PEI: 111,748 within a heuristic 50 km radius; not unique people.
Nearby, since 1 April 2026
- September 7, 2026 · score 32 · 14.3 km
- September 6, 2026 · score 32 · 14.3 km
- August 29, 2026 · score 39 · 14.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 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 v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 43 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 35.6080, -82.0096 |
| Nearest City | Morganton (34 km) |
| Urban exposure index (PEI) | 111.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-12T22:53:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.955e245a35f60c250197634db52c807e |
Physical priority index · v1. 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: 2026-06-12T22:53:00.000Z.
First archived: 2026-06-12T23:09:39.829Z. 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 | Caldwell, NC; Henderson, NC |
| Headline | Severe Thunderstorm Warning issued June 12 at 6:53PM EDT until June 12 at 7:30PM EDT by NWS Greenville-Spartanburg SC |
| Expires | 2026-06-12T19:30:00-04:00 |
| SenderName | NWS Greenville-Spartanburg SC |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.955e245a35f60c250197634db52c807e7412d13d.002.1","noaa_urn:oid:2.49.0.1.840.0.572041fbf9eae1ced1e9787b895835c5acc2e686.001.1"] |
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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