This alert expired on 12 August 2026 at 00:15 UTC. It is kept here as a record.
No stronger detection stands among the 27 recorded within 20 km of this point since 6 July 2026 — 9 others scored the same. The last comparable one was on 6 August 2026. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 11 at 7:30PM EDT until August 11 at 8:15PM EDT by NWS Greenville-Spartanburg SC
An estimated 50,626 people live within 50 km of this point.
Nearby, since 6 July 2026
- July 6, 2026 · score 39 · 2.4 km
- August 29, 2026 · score 39 · 4.3 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 39 out of 100, at 85 % 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) | 39 / 100 |
| Our confidence | 85% |
| Coordinates | 34.9686, -80.1267 |
| Nearest City | Monroe (39 km) |
| Population Exposed | 50.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-11T23:30:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Spartanburg, SC; Cherokee, SC; Chester, SC; Union, SC; York, SC; Greenville, SC; Spartanburg, SC and 7 more areas |
| Headline | Severe Thunderstorm Warning issued August 11 at 7:30PM EDT until August 11 at 8:15PM EDT by NWS Greenville-Spartanburg SC |
| Expires | 2026-08-11T20:15:00-04:00 |
| SenderName | NWS Greenville-Spartanburg SC |
| HasExactCoords | true |
| MergedCount | 10 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.8cb7e4c2c38cc94c9c0d3bcc4fc279f46ab99111.001.1","noaa_urn:oid:2.49.0.1.840.0.97491d212962265dfa0c54ecbe487a2d4dd03526.001.1","noaa_urn:oid:2.49.0.1.840.0.d8b18ca8e0e67fe607827c7ae49114902cd319fe.001.1","noaa_urn:oid:2.49.0.1.840.0.40f17f2e2ba61278fb67e421e8d8f36c561e9c37.002.1","noaa_urn:oid:2.49.0.1.840.0.fda969b7914bfe5c2efcf1f94c9835dc210185cf.001.1","noaa_urn:oid:2.49.0.1.840.0.8b2b3b2b51f3727997c471377547689c7d4da991.001.1","noaa_urn:oid:2.49.0.1.840.0.5c8919dae12216c84f8e99de441a85c42bfbff6b.001.1","noaa_urn:oid:2.49.0.1.840.0.611f96e337eea7a8f5629c65f7ee6a1de3e4a3da.002.1","noaa_urn:oid:2.49.0.1.840.0.15ca3a3be5c844d769fa31be8f24c51a1d1681c7.001.1","noaa_urn:oid:2.49.0.1.840.0.92ee89f26d32df4f919ed79c74911759443869a5.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 6 WSW Norwood |
| Iem County | Stanly |
| Iem State | NC |
| Iem Wfo | RAH |
| Iem Remark | Intersection of Old Davis and Aldridge Rd. |
| MergedSources | [{"id":"iem_H_35.190_-80.220_1786484700000","source":"iem","severity":"low","severityValue":25,"timestamp":1786484700000,"latitude":35.19,"longitude":-80.22}] |
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 39/100, near Monroe (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.