Right now
The most recent data we hold from NOAA arrived 17 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 27 June 2026 at 20:15 UTC. It is kept here as a record.
It is the 32nd strongest of the 215 detections recorded within 20 km of this point since 27 June 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 27 at 3:19PM EDT until June 27 at 4:15PM EDT by NWS Greenville-Spartanburg SC
Urban PEI: 267,021 within a heuristic 50 km radius; not unique people.
Nearby, since 27 June 2026
- August 13, 2026 · score 43 · 4.6 km
- August 10, 2026 · score 43 · 5.4 km
- August 29, 2026 · score 43 · 10.2 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 | 0.78/1 |
| Coordinates | 34.6752, -82.2324 |
| Nearest City | Simpsonville (7 km) |
| Urban exposure index (PEI) | 267.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-27T19:19:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.179365ece53940ac8bc9fbc60ac819ad |
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: 2026-06-27T19:19:00.000Z.
First archived: 2026-06-27T19:36:33.900Z. 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 | Burke, NC; Caldwell, NC; Cleveland, NC; McDowell, NC; Rutherford, NC; Anderson, SC; Greenville, SC; Pickens, SC; Spartanburg, SC; Taliaferro, GA; Warren, GA; Wilkes, GA |
| Headline | Severe Thunderstorm Warning issued June 27 at 3:19PM EDT until June 27 at 4:15PM EDT by NWS Greenville-Spartanburg SC |
| Expires | 2026-06-27T16:15:00-04:00 |
| SenderName | NWS Greenville-Spartanburg SC |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.179365ece53940ac8bc9fbc60ac819ad0ecd3754.001.1","noaa_urn:oid:2.49.0.1.840.0.a1cc3722ead6ad35d0f47c76dfae82487954a4de.001.1","noaa_urn:oid:2.49.0.1.840.0.1a61f8ffb78f5b93d2eb769547722e0cc8e14831.001.1"] |
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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