Right now
The most recent data we hold from NOAA arrived 1 minute 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 July 2026 at 22:30 UTC. It is kept here as a record.
No stronger detection stands among the 88 recorded within 20 km of this point since 13 March 2026 — 15 others scored the same. The last comparable one was on 29 June 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 12 at 5:48PM EDT until July 12 at 6:30PM EDT by NWS Columbia SC
Urban PEI: 161,391 within a heuristic 50 km radius; not unique people.
Nearby, since 13 March 2026
- March 13, 2026 · score 43 · 1.9 km
- June 29, 2026 · score 43 · 9.9 km
- June 18, 2026 · score 43 · 11.6 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 | 0.81/1 |
| Coordinates | 33.6481, -81.8745 |
| Nearest City | Aiken (17 km) |
| Urban exposure index (PEI) | 161.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-12T21:48:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.73f6a50df1fcb76fe36c975477d89487 |
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: 2026-07-12T21:48:00.000Z.
First archived: 2026-07-12T21:52:24.876Z. 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 | Aiken, SC; Lexington, SC; Saluda, SC; Habersham, GA; Beaufort, SC |
| Headline | Severe Thunderstorm Warning issued July 12 at 5:48PM EDT until July 12 at 6:30PM EDT by NWS Columbia SC |
| Expires | 2026-07-12T18:30:00-04:00 |
| SenderName | NWS Columbia SC |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.73f6a50df1fcb76fe36c975477d89487c53bca9d.001.1","noaa_urn:oid:2.49.0.1.840.0.109a1ad18fceb2362ff2c4687e556bc5e210529c.001.1","noaa_urn:oid:2.49.0.1.840.0.bd88c0497fb98d486ace3bc054c4567bc04746ce.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.
Review the area, threshold and delivery channel in your account.
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