Reported by SPC 171 days ago.
No stronger detection stands among the 30 recorded within 20 km of this point since 12 March 2026 — 8 others scored the same.
What the source measured
SPC reported: Wind UNK kt near 3 NW Catawba, York, SC. 911 Call Center reports powerlines down on South Anderson Road. (GSP)
An estimated 1,200,673 people live within 50 km of this point.
Nearby, since 12 March 2026
- March 13, 2026 · score 52 · 0.0 km
- March 16, 2026 · score 52 · 8.7 km
- August 28, 2026 · score 52 · 11.3 km
How we know
Confirmed by 2 independent sources, including SPC.
Our own score for this event is 52 out of 100, at 78 % 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) | 52 / 100 |
| Our confidence | 78% |
| Coordinates | 34.8900, -80.9500 |
| Nearest City | Rock Hill (8 km) |
| Population Exposed | 1.2M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-12T13:38:00.000Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | wind |
| Speed | UNK |
| Location | 3 NW Catawba |
| County | York |
| State | SC |
| Comments | 911 Call Center reports powerlines down on South Anderson Road. (GSP) |
| Iem TypeSummary | D |
| Iem City | 3 NW Catawba |
| Iem County | York |
| Iem State | SC |
| Iem Wfo | GSP |
| Iem Remark | 911 Call Center reports powerlines down on South Anderson Road. |
| MergedSources | [{"id":"iem_D_34.890_-80.950_1773322680000","source":"iem","severity":"low","severityValue":25,"timestamp":1773322680000,"latitude":34.89,"longitude":-80.95}] |
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 52/100, near Rock Hill (United States), based on data from spc. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.