Blair CountyPower Outage History
What this grade means
Better than average — fewer or shorter outages than most counties. This county's outage history is better than the national median: recorded outages are less frequent and/or shorter in duration than a typical US county experienced over the same 12-year period. It isn't in the top tier nationally, but its track record points to lower-than-average outage risk.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Apr 17, 2016 | 12 hrs | 13,514 (19%) | Unnamed event |
| Feb 25, 2017 | 2 hrs | 12,981 (19%) | Unnamed event |
| Apr 29, 2025 | 76 hrs | 12,457 (18%) | Thunderstorm Wind |
| Aug 12, 2017 | 3 hrs | 12,238 (18%) | Unnamed event |
| Feb 9, 2017 | <1 hr | 11,309 (16%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Blair County, Pennsylvania that day.
Over the 12 years from 2014 to 2025, Blair County recorded 650 distinct power outage events, averaging 3.1 hours per event.
The single worst outage on record in Blair County started April 17, 2016, lasting 12 hours and leaving up to 13,514 customers without power (19% of the county) at its peak.
April has historically been the worst month for outages in Blair County, with 80 events recorded during that month across the dataset.
Based on this history, Blair County earns a Reliability Grade of B, placing it in the 67th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Pennsylvania
Counties with the closest reliability grade and national percentile to Blair County.
| County | Grade | National percentile |
|---|---|---|
| Snyder County | B | 67th |
| Lackawanna County | B | 68th |
| Somerset County | B | 70th |
| Lehigh County | B | 72nd |
| Montour County | B | 62nd |
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 Blair County?
Between 2014 and 2025, Blair County recorded 650 outage events, averaging 3.1 hours each.
What is Blair County's reliability grade?
Blair County has a Reliability Grade of B, in the 67th national percentile.
What was the worst power outage in Blair County?
The worst outage on record started April 17, 2016, lasting 12 hours and affecting up to 13,514 customers.