Reported by SPC 3 days ago.
It is the 2nd strongest of the 34 detections recorded within 20 km of this point since 6 June 2026. Another comparable one was recorded here earlier the same day.
What the source measured
SPC reported: Wind UNK kt near 1 NNW Fannettsburg, Franklin, PA. Corrects previous tstm wnd dmg report from 1 NNW Fannettsburg. Telephone pole brought down on a vehicle... no injuries. (CTP)
An estimated 61,123 people live within 50 km of this point.
Nearby, since 6 June 2026
- August 27, 2026 · score 39 · 0.0 km
- July 6, 2026 · score 63 · 2.9 km
- June 6, 2026 · score 34 · 24.4 km
How we know
Confirmed by 2 independent sources, including SPC.
Our own score for this event is 39 out of 100, at 79 % 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) | 39 / 100 |
| Our confidence | 79% |
| Coordinates | 40.0600, -77.8400 |
| Nearest City | Chambersburg (20 km) |
| Population Exposed | 61.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-28T04:29:44.705Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | wind |
| Speed | UNK |
| Location | 1 NNW Fannettsburg |
| County | Franklin |
| State | PA |
| Comments | Corrects previous tstm wnd dmg report from 1 NNW Fannettsburg. Telephone pole brought down on a vehicle... no injuries. (CTP) |
| Iem TypeSummary | F |
| Iem City | 4 NNE Mercersburg |
| Iem County | Franklin |
| Iem State | PA |
| Iem Wfo | CTP |
| Iem Remark | Flooded roadways. |
| MergedSources | [{"id":"iem_F_39.880_-77.870_1787870640000","source":"iem","severity":"low","severityValue":25,"timestamp":1787870640000,"latitude":39.88,"longitude":-77.87}] |
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 39/100, near Chambersburg (United States), based on data from spc. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.