Mifflin County Power Outage History
2014–2025 · Pennsylvania
Average — typical outage frequency and duration nationally. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Oct 2, 2017 | 4 hrs | 19,118 (72%) | Unnamed event |
| Aug 18, 2019 | 40 hrs | 12,698 (48%) | Thunderstorm Wind |
| Apr 4, 2018 | 12 hrs | 12,376 (47%) | High Wind |
| Aug 19, 2017 | 18 hrs | 9,829 (37%) | Thunderstorm Wind |
| Apr 30, 2021 | 1 hrs | 7,545 (29%) | Unnamed event |
Over the 12 years from 2014 to 2025, Mifflin County recorded 519 distinct power outage events, averaging 3.0 hours per event.
The single worst outage on record in Mifflin County started October 2, 2017, lasting 4 hours and leaving up to 19,118 customers without power (72% of the county) at its peak.
July has historically been the worst month for outages in Mifflin County, with 63 events recorded during that month across the dataset.
Based on this history, Mifflin County earns a Reliability Grade of C, placing it in the 49th percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in Pennsylvania
Counties with the closest reliability grade and national percentile to Mifflin County.
| County | Grade | National percentile |
|---|---|---|
| Schuylkill County | C | 48th |
| Berks County | C | 48th |
| Centre County | C | 52nd |
| Northampton County | C | 46th |
| Fulton County | C | 46th |
FAQ
How often does power go out in Mifflin County?
Between 2014 and 2025, Mifflin County recorded 519 outage events, averaging 3.0 hours each.
What is Mifflin County's reliability grade?
Mifflin County has a Reliability Grade of C, in the 49th national percentile.
What was the worst power outage in Mifflin County?
The worst outage on record started October 2, 2017, lasting 4 hours and affecting up to 19,118 customers.