This alert expired on 11 August 2026 at 22:30 UTC. It is kept here as a record.
It is the 25th strongest of the 65 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 10 August 2026. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 11 at 5:46PM EDT until August 11 at 6:30PM EDT by NWS Greenville-Spartanburg SC
An estimated 350,053 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 24, 2026 · score 48 · 5.5 km
- August 15, 2026 · score 48 · 10.8 km
- March 17, 2026 · score 43 · 12.0 km
How we know
Confirmed by 13 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.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 90% |
| Coordinates | 35.7067, -80.6133 |
| Nearest City | Salisbury (14 km) |
| Population Exposed | 350.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-11T21:46:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Alexander, NC; Burke, NC; Cabarrus, NC; Caldwell, NC; Catawba, NC; Davie, NC; Iredell, NC; Lincoln, NC; Mecklenburg, NC; Rowan, NC |
| Headline | Severe Thunderstorm Warning issued August 11 at 5:46PM EDT until August 11 at 6:30PM EDT by NWS Greenville-Spartanburg SC |
| Expires | 2026-08-11T18:30:00-04:00 |
| SenderName | NWS Greenville-Spartanburg SC |
| HasExactCoords | true |
| Iem TypeSummary | D |
| Iem City | 1 NW Wilkesboro |
| Iem County | Wilkes |
| Iem State | NC |
| Iem Wfo | RNK |
| Iem Remark | Tree down on Brookwood Drive. |
| MergedSources | [{"id":"iem_F_36.160_-81.140_1786481700000","source":"iem","severity":"low","severityValue":25,"timestamp":1786481700000,"latitude":36.16,"longitude":-81.14},{"id":"iem_D_36.160_-81.160_1786478940000","source":"iem","severity":"low","severityValue":25,"timestamp":1786478940000,"latitude":36.16,"longitude":-81.16},{"id":"iem_D_36.140_-81.120_1786478880000","source":"iem","severity":"low","severityValue":25,"timestamp":1786478880000,"latitude":36.14,"longitude":-81.12},{"id":"iem_D_36.040_-80.890_1786482060000","source":"iem","severity":"low","severityValue":25,"timestamp":1786482060000,"latitude":36.04,"longitude":-80.89},{"id":"iem_D_36.160_-81.170_1786479000000","source":"iem","severity":"low","severityValue":25,"timestamp":1786479000000,"latitude":36.16,"longitude":-81.17},{"id":"iem_D_35.960_-80.780_1786482900000","source":"iem","severity":"low","severityValue":25,"timestamp":1786482900000,"latitude":35.96,"longitude":-80.78},{"id":"iem_D_36.010_-80.800_1786482420000","source":"iem","severity":"low","severityValue":25,"timestamp":1786482420000,"latitude":36.01,"longitude":-80.8},{"id":"iem_D_35.950_-80.800_1786482900000","source":"iem","severity":"low","severityValue":25,"timestamp":1786482900000,"latitude":35.95,"longitude":-80.8},{"id":"iem_D_36.030_-80.810_1786482900000","source":"iem","severity":"low","severityValue":25,"timestamp":1786482900000,"latitude":36.03,"longitude":-80.81},{"id":"iem_D_36.010_-80.880_1786481040000","source":"iem","severity":"low","severityValue":25,"timestamp":1786481040000,"latitude":36.01,"longitude":-80.88},{"id":"iem_D_35.940_-80.810_1786482000000","source":"iem","severity":"low","severityValue":25,"timestamp":1786482000000,"latitude":35.94,"longitude":-80.81},{"id":"iem_D_36.150_-81.170_1786478700000","source":"iem","severity":"low","severityValue":25,"timestamp":1786478700000,"latitude":36.15,"longitude":-81.17}] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
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 Salisbury (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.