This alert expired on 27 June 2026 at 20:45 UTC. It is kept here as a record.
No stronger detection stands among the 22 recorded within 20 km of this point since 27 June 2026 — 12 others scored the same. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 27 at 3:43PM EDT until June 27 at 4:45PM EDT by NWS Greenville-Spartanburg SC
An estimated 218,921 people live within 50 km of this point.
Nearby, since 27 June 2026
- August 13, 2026 · score 43 · 3.5 km
- July 13, 2026 · score 43 · 11.5 km
- July 11, 2026 · score 43 · 15.9 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, at 78 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 78% |
| Coordinates | 34.7659, -81.8538 |
| Nearest City | Spartanburg (22 km) |
| Population Exposed | 218.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-27T19:43:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.c0c50cad5a0098e2ec50899341b24e4d |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Greenville, SC; Laurens, SC; Spartanburg, SC; Union, SC; Alexander, NC; Burke, NC; Caldwell, NC; Catawba, NC; Iredell, NC; Burke, GA; Richmond, GA; Aiken, SC; Barnwell, SC and 2 more areas |
| Headline | Severe Thunderstorm Warning issued June 27 at 3:43PM EDT until June 27 at 4:45PM EDT by NWS Greenville-Spartanburg SC |
| Expires | 2026-06-27T16:45:00-04:00 |
| SenderName | NWS Greenville-Spartanburg SC |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.c0c50cad5a0098e2ec50899341b24e4d39e71b4c.001.1","noaa_urn:oid:2.49.0.1.840.0.ab44a562090525960b40eeb72844518c3c90feca.001.1","noaa_urn:oid:2.49.0.1.840.0.5f35a3a85509377522fffef63ec58916ed60f6ad.001.1","noaa_urn:oid:2.49.0.1.840.0.179365ece53940ac8bc9fbc60ac819ad0ecd3754.001.1","noaa_urn:oid:2.49.0.1.840.0.a1cc3722ead6ad35d0f47c76dfae82487954a4de.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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 43/100, near Spartanburg (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.