Tioga CountyPower Outage History
What this grade means
Average — typical outage frequency and duration nationally. This county sits in the middle of the national distribution — its outage frequency and duration over the past 12 years are close to the nationwide median, neither notably better nor worse than most other US counties. A typical amount of backup-power preparedness is reasonable here.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| May 4, 2018 | 6 hrs | 5,508 (20%) | Thunderstorm Wind |
| Feb 3, 2023 | 28 hrs | 4,868 (18%) | Unnamed event |
| Mar 2, 2018 | 4 hrs | 4,595 (17%) | Unnamed event |
| Dec 23, 2020 | 7 hrs | 4,459 (17%) | Winter Storm |
| Oct 3, 2019 | 10 hrs | 4,455 (17%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Tioga County, Pennsylvania that day.
Over the 10 years from 2016 to 2025, Tioga County recorded 681 distinct power outage events, averaging 4.1 hours per event.
The single worst outage on record in Tioga County started May 4, 2018 (Thunderstorm Wind), lasting 6 hours and leaving up to 5,508 customers without power (20% of the county) at its peak.
July has historically been the worst month for outages in Tioga County, with 84 events recorded during that month across the dataset.
Based on this history, Tioga County earns a Reliability Grade of C, placing it in the 41st percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Pennsylvania
Counties with the closest reliability grade and national percentile to Tioga County.
| County | Grade | National percentile |
|---|---|---|
| Westmoreland County | C | 41st |
| Allegheny County | C | 42nd |
| Beaver County | C | 41st |
| Fayette County | C | 41st |
| Juniata County | C | 43rd |
Most reliable counties nationally
The top 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
Least reliable counties nationally
The bottom 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
FAQ
How often does power go out in Tioga County?
Between 2016 and 2025, Tioga County recorded 681 outage events, averaging 4.1 hours each.
What is Tioga County's reliability grade?
Tioga County has a Reliability Grade of C, in the 41st national percentile.
What was the worst power outage in Tioga County?
The worst outage on record started May 4, 2018 (Thunderstorm Wind), lasting 6 hours and affecting up to 5,508 customers.