Right now
The most recent data we hold from NOAA arrived 3 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 May 2026 at 03:45 UTC. It is kept here as a record.
It is the 95th strongest of the 367 detections recorded within 20 km of this point since 23 May 2026. The last comparable one was on 25 May 2026. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 26 at 8:37PM 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 27, 2026 · score 43 · 1.7 km
- May 25, 2026 · score 43 · 7.0 km
- August 6, 2026 · score 37 · 16.3 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 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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 |
| Our confidence | 80% |
| Coordinates | 34.0708, -81.4871 |
| Nearest City | Lexington (25 km) |
| Population Exposed | 214.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-27T00:37:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.f87656017c50d6f5354e43bdb7f18354 |
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 8:37PM EDT until May 26 at 11:45PM EDT by NWS Columbia SC |
| Expires | 2026-05-26T23:45:00-04:00 |
| SenderName | NWS Columbia SC |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f87656017c50d6f5354e43bdb7f18354f56d2ea4.001.1","noaa_urn:oid:2.49.0.1.840.0.05380378c181a3565f841cc5d170610722977182.001.1"] |
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 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.
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