This alert expired on 13 August 2026 at 05:45 UTC. It is kept here as a record.
No stronger detection stands among the 23 recorded within 20 km of this point since 27 June 2026 — 11 others scored the same. 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: Flash Flood Warning issued August 13 at 1:15AM EDT until August 13 at 1:45AM EDT by NWS Greenville-Spartanburg SC
An estimated 218,921 people live within 50 km of this point.
Nearby, since 27 June 2026
- June 27, 2026 · score 43 · 3.5 km
- July 13, 2026 · score 43 · 8.1 km
- July 11, 2026 · score 43 · 13.0 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 43 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) | 43 / 100 |
| Our confidence | 85% |
| Coordinates | 34.7367, -81.8675 |
| Nearest City | Spartanburg (24 km) |
| Population Exposed | 218.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-13T05:15:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.47964ecaab81ab27bf77e403a51dfb144d31b8a0.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Spartanburg, SC; Union, SC |
| Headline | Flash Flood Warning issued August 13 at 1:15AM EDT until August 13 at 1:45AM EDT by NWS Greenville-Spartanburg SC |
| Expires | 2026-08-13T01:45:00-04:00 |
| SenderName | NWS Greenville-Spartanburg SC |
| HasExactCoords | true |
| Iem TypeSummary | D |
| Iem City | 3 NNE Clinton |
| Iem County | Laurens |
| Iem State | SC |
| Iem Wfo | GSP |
| Iem Remark | SCHP reported tree downed along Hwy 56. |
| MergedSources | [{"id":"iem_D_34.520_-81.850_1786584000000","source":"iem","severity":"low","severityValue":25,"timestamp":1786584000000,"latitude":34.52,"longitude":-81.85}] |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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.
Want to know when something happens near Spartanburg?
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.