Right now
The most recent data we hold from NOAA arrived 19 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 19:30 UTC. It is kept here as a record.
No stronger detection stands among the 87 recorded within 20 km of this point since 16 March 2026 — 4 others scored the same. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 10 at 3:04PM EDT until July 10 at 3:30PM EDT by NWS Greenville-Spartanburg SC
Urban PEI: 1,077,591 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- August 28, 2026 · score 43 · 17.9 km
- August 2, 2026 · score 43 · 18.4 km
- September 6, 2026 · score 46 · 19.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 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) | 52 / 100 |
| Legacy data-support index | 0.81/1 |
| Coordinates | 34.9886, -81.2810 |
| Nearest City | Rock Hill (24 km) |
| Urban exposure index (PEI) | 1.1M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-10T19:04:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.e391ef2d15b3ebbb09b2013b14b4ea5d |
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: 2026-07-10T19:04:00.000Z.
First archived: 2026-07-10T19:06:32.434Z. 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 | Catawba, NC; Gaston, NC; Iredell, NC; Lincoln, NC; Mecklenburg, NC; Cabarrus, NC; Gaston, NC; Mecklenburg, NC; Union, NC; Gaston, NC and 2 more areas |
| Headline | Severe Thunderstorm Warning issued July 10 at 3:04PM EDT until July 10 at 3:30PM EDT by NWS Greenville-Spartanburg SC |
| Expires | 2026-07-10T15:30:00-04:00 |
| SenderName | NWS Greenville-Spartanburg SC |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.e391ef2d15b3ebbb09b2013b14b4ea5db7f40a21.001.1","noaa_urn:oid:2.49.0.1.840.0.0b03891206c61a15dd24034890bfe4d7cd84b2b2.001.1","noaa_urn:oid:2.49.0.1.840.0.18e67b6d2fe7230de947fb044cf4f05689a37541.002.1","noaa_urn:oid:2.49.0.1.840.0.f6a0ff731e3fa2747bd257aca567a26c03a6fa96.001.1","noaa_urn:oid:2.49.0.1.840.0.119e61c24962b62854a9da937e6b5f0dd7e546c8.001.1"] |
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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