Right now
The most recent data we hold from NOAA arrived 2 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 10 July 2026 at 20:30 UTC. It is kept here as a record.
No stronger detection stands among the 40 recorded within 20 km of this point since 16 March 2026 — 25 others scored the same. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 10 at 4:19PM EDT until July 10 at 4:30PM EDT by NWS Greenville-Spartanburg SC
Urban PEI: 71,548 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- March 17, 2026 · score 39 · 4.2 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 | 34.5950, -81.1753 |
| Nearest City | Rock Hill (38 km) |
| Urban exposure index (PEI) | 71.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-10T20:19:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.aa9c860f6d08fba679a34aa6807a8f3c |
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: 2026-07-10T20:19:00.000Z.
First archived: 2026-07-10T20:24:51.889Z. 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 | Union, NC; Fairfield, SC; Lexington, SC; Newberry, SC; Richland, SC; Hart, GA; Abbeville, SC; Anderson, SC; Oconee, SC; Pickens, SC and 2 more areas |
| Headline | Severe Thunderstorm Warning issued July 10 at 4:19PM EDT until July 10 at 4:30PM EDT by NWS Greenville-Spartanburg SC |
| Expires | 2026-07-10T16:30:00-04:00 |
| SenderName | NWS Greenville-Spartanburg SC |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.aa9c860f6d08fba679a34aa6807a8f3c9797b01c.002.1","noaa_urn:oid:2.49.0.1.840.0.9c3c7561f00d2771552f420da6af2e5b48d75fb7.001.1","noaa_urn:oid:2.49.0.1.840.0.7ef492ac98b0fd1937cb56b3e5d2b91728f1836a.002.1","noaa_urn:oid:2.49.0.1.840.0.8e7e2b741eaa82409500fe506b16711015f3aa40.001.1","noaa_urn:oid:2.49.0.1.840.0.ad1046b0a1dd7f495184eb5996bc6e268a26c120.001.1","noaa_urn:oid:2.49.0.1.840.0.0561e53202dd6acbc4c527e2e706360be9eaa7dc.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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