This alert expired on 27 May 2026 at 03:52 UTC. It is kept here as a record.
No stronger detection stands among the 34 recorded within 20 km of this point since 23 May 2026 — 10 others scored the same. Another comparable one was recorded here earlier the same day. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 26 at 11:42PM EDT until May 26 at 11:45PM EDT by NWS Columbia SC
An estimated 214,909 people live within 50 km of this point.
Nearby, since 23 May 2026
- May 25, 2026 · score 43 · 6.9 km
- May 23, 2026 · score 43 · 16.3 km
- August 6, 2026 · score 37 · 17.8 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 | 34.0835, -81.4767 |
| Nearest City | Lexington (25 km) |
| Population Exposed | 214.9K within 50 km |
| Impact Tier | significant |
| Date | 2026-05-27 — time not reported by the source |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Calhoun, SC; Orangeburg, SC; Laurens, SC |
| Headline | Flash Flood Warning issued May 26 at 11:42PM EDT until May 26 at 11:45PM EDT by NWS Columbia SC |
| Expires | 2026-05-26T23:52:00-04:00 |
| SenderName | NWS Columbia SC |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.a93a9ae28ddd8d0012574f67d82e3bb72ced7d55.001.1","noaa_urn:oid:2.49.0.1.840.0.74a6d29c42b95612498f9cd9ebc74f51dd47cf1d.001.1"] |
| Iem TypeSummary | F |
| Iem City | 3 ENE North |
| Iem County | Orangeburg |
| Iem State | SC |
| Iem Wfo | CAE |
| Iem Remark | Corrects previous flash flood report from 3 ENE North. Orangeburg dispatch reported 2-3 feet of water flowing over the road on North Road near Redmond Mill Rd resulting in a road closure. |
| MergedSources | [{"id":"iem_F_33.630_-81.050_1779843000000","source":"iem","severity":"low","severityValue":25,"timestamp":1779843000000,"latitude":33.63,"longitude":-81.05}] |
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.
Calamity.live data shows a weather event with CalamityScore 43/100, near Lexington (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.