This alert expired on 28 May 2026 at 01:30 UTC. It is kept here as a record.
It is the 3rd strongest of the 35 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 27 at 5:18PM EDT until May 27 at 9:30PM EDT by NWS Greenville-Spartanburg SC
An estimated 93,110 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 20, 2026 · score 39 · 13.5 km
- August 3, 2026 · score 39 · 13.6 km
- June 8, 2026 · score 32 · 17.9 km
How we know
Confirmed by 7 independent sources, including NOAA.
Our own score for this event is 39 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) | 39 / 100 |
| Our confidence | 90% |
| Coordinates | 36.0867, -81.4993 |
| Nearest City | Lenoir (20 km) |
| Population Exposed | 93.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-27T21:18:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.30479af02d4ac693cad4c4f5051625399e8b3523.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Caldwell, NC |
| Headline | Flash Flood Warning issued May 27 at 5:18PM EDT until May 27 at 9:30PM EDT by NWS Greenville-Spartanburg SC |
| Expires | 2026-05-27T21:30:00-04:00 |
| SenderName | NWS Greenville-Spartanburg SC |
| HasExactCoords | true |
| Iem TypeSummary | F |
| Iem City | 7 NNE Patterson |
| Iem County | Caldwell |
| Iem State | NC |
| Iem Wfo | GSP |
| Iem Remark | Water flowing over Stone Mountain Road. |
| MergedSources | [{"id":"iem_D_36.030_-80.910_1779912600000","source":"iem","severity":"low","severityValue":25,"timestamp":1779912600000,"latitude":36.03,"longitude":-80.91},{"id":"iem_D_36.000_-80.880_1779912600000","source":"iem","severity":"low","severityValue":25,"timestamp":1779912600000,"latitude":36,"longitude":-80.88},{"id":"iem_D_36.000_-80.850_1779912600000","source":"iem","severity":"low","severityValue":25,"timestamp":1779912600000,"latitude":36,"longitude":-80.85},{"id":"iem_D_36.000_-80.850_1779913200000","source":"iem","severity":"low","severityValue":25,"timestamp":1779913200000,"latitude":36,"longitude":-80.85},{"id":"iem_F_36.040_-81.520_1779914580000","source":"iem","severity":"low","severityValue":25,"timestamp":1779914580000,"latitude":36.04,"longitude":-81.52},{"id":"iem_F_36.090_-81.530_1779916620000","source":"iem","severity":"low","severityValue":25,"timestamp":1779916620000,"latitude":36.09,"longitude":-81.53}] |
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.
Want to know when something happens near Lenoir?
Calamity.live data shows a weather event with CalamityScore 39/100, near Lenoir (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.