Northumberland 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 |
|---|---|---|---|
| Feb 13, 2024 | 16 hrs | 18,268 (39%) | Heavy Snow |
| Oct 31, 2019 | 34 hrs | 13,054 (28%) | Unnamed event |
| May 23, 2018 | <1 hr | 10,690 (23%) | Unnamed event |
| Apr 15, 2019 | 44 hrs | 9,990 (22%) | Thunderstorm Wind |
| Apr 3, 2025 | 7 hrs | 9,905 (21%) | Drought |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Northumberland County, Pennsylvania that day.
Over the 12 years from 2014 to 2025, Northumberland County recorded 718 distinct power outage events, averaging 2.9 hours per event.
The single worst outage on record in Northumberland County started February 13, 2024 (Heavy Snow), lasting 16 hours and leaving up to 18,268 customers without power (39% of the county) at its peak.
July has historically been the worst month for outages in Northumberland County, with 73 events recorded during that month across the dataset.
Based on this history, Northumberland County earns a Reliability Grade of C, placing it in the 58th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Pennsylvania
Counties with the closest reliability grade and national percentile to Northumberland County.
| County | Grade | National percentile |
|---|---|---|
| Lebanon County | C | 58th |
| Lycoming County | C | 59th |
| Adams County | C | 56th |
| Lawrence County | C | 60th |
| York County | C | 56th |
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 Northumberland County?
Between 2014 and 2025, Northumberland County recorded 718 outage events, averaging 2.9 hours each.
What is Northumberland County's reliability grade?
Northumberland County has a Reliability Grade of C, in the 58th national percentile.
What was the worst power outage in Northumberland County?
The worst outage on record started February 13, 2024 (Heavy Snow), lasting 16 hours and affecting up to 18,268 customers.