Jones County Power Outage History
2014–2025 · Iowa
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 |
|---|---|---|---|
| Aug 10, 2020 | 187 hrs | 5,250 (49%) | Thunderstorm Wind |
| Jul 11, 2025 | 30 hrs | 3,762 (35%) | Tornado |
| May 14, 2018 | 1 hrs | 3,163 (29%) | Hail |
| Jul 6, 2016 | 4 hrs | 3,120 (29%) | Thunderstorm Wind |
| Dec 16, 2021 | 7 hrs | 3,110 (29%) | High Wind |
Over the 12 years from 2014 to 2025, Jones County recorded 308 distinct power outage events, averaging 3.0 hours per event.
The single worst outage on record in Jones County started August 10, 2020 (Thunderstorm Wind), lasting 187 hours and leaving up to 5,250 customers without power (49% of the county) at its peak.
July has historically been the worst month for outages in Jones County, with 44 events recorded during that month across the dataset.
Based on this history, Jones County earns a Reliability Grade of C, placing it in the 45th percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in Iowa
Counties with the closest reliability grade and national percentile to Jones County.
| County | Grade | National percentile |
|---|---|---|
| Grundy County | C | 46th |
| Louisa County | C | 44th |
| Calhoun County | C | 47th |
| Adams County | C | 43rd |
| Washington County | C | 47th |
FAQ
How often does power go out in Jones County?
Between 2014 and 2025, Jones County recorded 308 outage events, averaging 3.0 hours each.
What is Jones County's reliability grade?
Jones County has a Reliability Grade of C, in the 45th national percentile.
What was the worst power outage in Jones County?
The worst outage on record started August 10, 2020 (Thunderstorm Wind), lasting 187 hours and affecting up to 5,250 customers.