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 23:00 UTC. It is kept here as a record.
It is the 5th strongest of the 62 detections recorded within 20 km of this point since 30 April 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 12 at 6:43PM EDT until July 12 at 7:00PM EDT by NWS Columbia SC
Urban PEI: 96,585 within a heuristic 50 km radius; not unique people.
Nearby, since 30 April 2026
- July 12, 2026 · score 43 · 10.7 km
- June 18, 2026 · score 43 · 13.8 km
- September 6, 2026 · score 37 · 17.6 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 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) | 39 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 33.4100, -81.4588 |
| Nearest City | Aiken (29 km) |
| Urban exposure index (PEI) | 96.6K within 50 km |
| Impact Tier | significant |
| Date | 2026-07-12 — time not reported by the source |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.78e34b04d9e6307c74478d1b24c149fe |
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: 2026-07-12 — time not reported.
First archived: 2026-07-12T22:44:15.179Z. 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; Barnwell, SC; Calhoun, SC; Lexington, SC; Orangeburg, SC; Aiken, SC; Lexington, SC; Richland, SC; Saluda, SC and 1 more areas |
| Headline | Severe Thunderstorm Warning issued July 12 at 6:43PM EDT until July 12 at 7:00PM EDT by NWS Columbia SC |
| Expires | 2026-07-12T19:00:00-04:00 |
| SenderName | NWS Columbia SC |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.78e34b04d9e6307c74478d1b24c149fe7deb07f2.002.1","noaa_urn:oid:2.49.0.1.840.0.1bcfda3dd59209d0b6f7b9af4bb7c10368e06cd2.001.1","noaa_urn:oid:2.49.0.1.840.0.4b712ab4378948e216d222cd188ce87bcb71f0e7.001.1","noaa_urn:oid:2.49.0.1.840.0.4c5f8980a91a7faced3b91f6b9a52707cf0e24c3.001.1"] |
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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