Reported by SPC 172 days ago.
It is the 4th strongest of the 340 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 108 more were recorded here in the fortnight before it.
What the source measured
SPC reported: Wind UNK kt near Rockland, New Castle, DE. ROCKLAND RD. IS CLOSED IN BOTH DIRECTIONS FROM MONTCHANIN CT. TO MONTCHANIN RD. DUE TO A TREE DOWN IN WIRES. Time estimated from radar. (PHI)
An estimated 2,990,058 people live within 50 km of this point.
Nearby, since 12 March 2026
- June 15, 2026 · score 52 · 5.0 km
- March 17, 2026 · score 52 · 5.6 km
- July 6, 2026 · score 52 · 5.8 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.
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) | 52 / 100 |
| Our confidence | 78% |
| Coordinates | 39.7900, -75.5700 |
| Nearest City | Wilmington (5 km) |
| Population Exposed | 3.0M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-17T02:48:00.000Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | wind |
| Speed | UNK |
| Location | Rockland |
| County | New Castle |
| State | DE |
| Comments | ROCKLAND RD. IS CLOSED IN BOTH DIRECTIONS FROM MONTCHANIN CT. TO MONTCHANIN RD. DUE TO A TREE DOWN IN WIRES. Time estimated from radar. (PHI) |
| Iem TypeSummary | D |
| Iem City | Rockland |
| Iem County | New Castle |
| Iem State | DE |
| Iem Wfo | PHI |
| Iem Remark | ROCKLAND RD. IS CLOSED IN BOTH DIRECTIONS FROM MONTCHANIN CT. TO MONTCHANIN RD. DUE TO A TREE DOWN IN WIRES. Time estimated from radar. |
| MergedSources | [{"id":"iem_D_39.790_-75.570_1773715680000","source":"iem","severity":"low","severityValue":25,"timestamp":1773715680000,"latitude":39.79,"longitude":-75.57}] |
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 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 Wilmington?
Calamity.live data shows a weather event with CalamityScore 52/100, near Wilmington (United States), based on data from spc. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.