Right now
The most recent data we hold from NOAA arrived 2 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 05:00 UTC. It is kept here as a record.
It is the 2nd strongest of the 74 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 26 at 9:18PM EDT until May 27 at 1:00AM EDT by NWS Greenville-Spartanburg SC
An estimated 106,998 people live within 50 km of this point.
Nearby, since 16 March 2026
- May 27, 2026 · score 43 · 0.0 km
- May 26, 2026 · score 43 · 0.0 km
- June 27, 2026 · score 43 · 11.5 km
How we know
Confirmed by 6 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 90 % 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 | 90% |
| Coordinates | 34.5047, -81.9442 |
| Nearest City | Simpsonville (38 km) |
| Population Exposed | 107.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-27T01:18:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.74a6d29c42b95612498f9cd9ebc74f51dd47cf1d.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Laurens, SC |
| Headline | Flash Flood Warning issued May 26 at 9:18PM EDT until May 27 at 1:00AM EDT by NWS Greenville-Spartanburg SC |
| Expires | 2026-05-27T01:00:00-04:00 |
| SenderName | NWS Greenville-Spartanburg SC |
| HasExactCoords | true |
| Iem TypeSummary | F |
| Iem City | 3 S Ora |
| Iem County | Laurens |
| Iem State | SC |
| Iem Wfo | GSP |
| Iem Remark | Water over Fleming Mill Road. |
| MergedSources | [{"id":"iem_F_34.500_-82.010_1779840360000","source":"iem","severity":"low","severityValue":25,"timestamp":1779840360000,"latitude":34.5,"longitude":-82.01},{"id":"iem_F_34.470_-81.880_1779840480000","source":"iem","severity":"low","severityValue":25,"timestamp":1779840480000,"latitude":34.47,"longitude":-81.88},{"id":"iem_F_34.490_-81.980_1779840180000","source":"iem","severity":"low","severityValue":25,"timestamp":1779840180000,"latitude":34.49,"longitude":-81.98},{"id":"iem_F_34.350_-82.060_1779840720000","source":"iem","severity":"low","severityValue":25,"timestamp":1779840720000,"latitude":34.35,"longitude":-82.06},{"id":"iem_F_34.540_-81.990_1779840420000","source":"iem","severity":"low","severityValue":25,"timestamp":1779840420000,"latitude":34.54,"longitude":-81.99}] |
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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