Right now
The most recent data we hold from NOAA arrived 21 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 29 July 2026 at 01:34 UTC. It is kept here as a record.
It is the 3rd strongest of the 26 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 28 at 9:25PM EDT until July 28 at 9:30PM EDT by NWS Greenville-Spartanburg SC
Urban PEI: 38,712 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- July 29, 2026 · score 46 · 3.3 km
- July 12, 2026 · score 34 · 11.5 km
- August 7, 2026 · score 22 · 18.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 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) | 34 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 34.7026, -83.6101 |
| Nearest City | Gainesville (49 km) |
| Urban exposure index (PEI) | 38.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-29T01:25:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.0a3e4a61322a5eca6f09ec40a49e734a |
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: 2026-07-29T01:25:00.000Z.
First archived: 2026-07-29T01:28:09.486Z. 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 | Chester, SC; Union, SC; Franklin, GA; Habersham, GA; Hart, GA; Rabun, GA; Stephens, GA; Anderson, SC; Oconee, SC; Polk, TN and 2 more areas |
| Headline | Severe Thunderstorm Warning issued July 28 at 9:25PM EDT until July 28 at 9:30PM EDT by NWS Greenville-Spartanburg SC |
| Expires | 2026-07-28T21:34:00-04:00 |
| SenderName | NWS Greenville-Spartanburg SC |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.0a3e4a61322a5eca6f09ec40a49e734a65b996b7.001.1","noaa_urn:oid:2.49.0.1.840.0.5b05ceddb0cb2dd19463913ddfd6408ae1e575ac.001.1","noaa_urn:oid:2.49.0.1.840.0.f35a08bc45a63226856cf155e7fd986c39f36579.001.1","noaa_urn:oid:2.49.0.1.840.0.6f2feb623bfc5e4af1fc8a64b9ccdb0d24e5b2aa.002.1","noaa_urn:oid:2.49.0.1.840.0.91e31901c5cf54c69f1030a815c642344a602e49.001.1"] |
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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