Reported by SPC 166 days ago.
It is the 8th strongest of the 37 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 15 more were recorded here in the fortnight before it.
What the source measured
SPC reported: Wind UNK kt near Joanna, Laurens, SC. Power outages and utility line damage in Joanna. (GSP)
An estimated 23,260 people live within 50 km of this point.
Nearby, since 12 March 2026
- March 13, 2026 · score 34 · 14.2 km
- March 12, 2026 · score 34 · 14.2 km
- May 27, 2026 · score 43 · 15.5 km
How we know
One source: SPC. Not yet confirmed by a second, independent source.
Our own score for this event is 34 out of 100, at 73 % 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) | 34 / 100 |
| Our confidence | 73% |
| Coordinates | 34.4100, -81.8200 |
| Nearest City | Greenwood (39 km) |
| Population Exposed | 23.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-17T12:11:09.158Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | wind |
| Speed | UNK |
| Location | Joanna |
| County | Laurens |
| State | SC |
| Comments | Power outages and utility line damage in Joanna. (GSP) |
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 34/100, near Greenwood (United States), based on data from spc. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.