Onslow County Power Outage History
2014–2025 · North Carolina
Worse than average — more frequent or longer outages than most counties. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Sep 15, 2018 | 178 hrs | 71,864 (39%) | Hurricane Florence |
| Sep 13, 2018 | 26 hrs | 61,372 (33%) | Unnamed event |
| Aug 4, 2020 | 41 hrs | 50,789 (27%) | Hurricane Isaias |
| Oct 8, 2016 | 64 hrs | 30,149 (16%) | Hurricane Matthew |
| Jan 16, 2025 | 4 hrs | 22,805 (12%) | Unnamed event |
Over the 12 years from 2014 to 2025, Onslow County recorded 710 distinct power outage events, averaging 2.2 hours per event.
The single worst outage on record in Onslow County started September 15, 2018 (Hurricane Florence), lasting 178 hours and leaving up to 71,864 customers without power (39% of the county) at its peak.
July has historically been the worst month for outages in Onslow County, with 84 events recorded during that month across the dataset.
Based on this history, Onslow County earns a Reliability Grade of D, placing it in the 40th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Onslow County's outage profile
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Similar counties in North Carolina
Counties with the closest reliability grade and national percentile to Onslow County.
| County | Grade | National percentile |
|---|---|---|
| Lenoir County | D | 40th |
| Person County | D | 39th |
| Carteret County | C | 40th |
| Caldwell County | D | 39th |
| Durham County | D | 38th |
FAQ
How often does power go out in Onslow County?
Between 2014 and 2025, Onslow County recorded 710 outage events, averaging 2.2 hours each.
What is Onslow County's reliability grade?
Onslow County has a Reliability Grade of D, in the 40th national percentile.
What was the worst power outage in Onslow County?
The worst outage on record started September 15, 2018 (Hurricane Florence), lasting 178 hours and affecting up to 71,864 customers.