Lee County Power Outage History
2014–2025 · Iowa
Better than average — fewer or shorter 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 |
|---|---|---|---|
| Jun 29, 2023 | 4 hrs | 14,325 (77%) | Thunderstorm Wind |
| Jun 29, 2023 | 1 hrs | 9,921 (53%) | Thunderstorm Wind |
| Jun 3, 2025 | 22 hrs | 6,395 (34%) | Tornado |
| Jul 20, 2018 | 29 hrs | 6,316 (34%) | Thunderstorm Wind |
| Jun 30, 2023 | 61 hrs | 4,478 (24%) | Thunderstorm Wind |
Over the 12 years from 2014 to 2025, Lee County recorded 466 distinct power outage events, averaging 2.0 hours per event.
The single worst outage on record in Lee County started June 29, 2023 (Thunderstorm Wind), lasting 4 hours and leaving up to 14,325 customers without power (77% of the county) at its peak.
June has historically been the worst month for outages in Lee County, with 76 events recorded during that month across the dataset.
Based on this history, Lee County earns a Reliability Grade of B, placing it in the 61st percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Lee County's outage profile
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Outage-prep kit
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Similar counties in Iowa
Counties with the closest reliability grade and national percentile to Lee County.
| County | Grade | National percentile |
|---|---|---|
| Harrison County | B | 61st |
| Franklin County | B | 61st |
| Fayette County | B | 61st |
| Polk County | B | 60th |
| Ida County | B | 62nd |
FAQ
How often does power go out in Lee County?
Between 2014 and 2025, Lee County recorded 466 outage events, averaging 2.0 hours each.
What is Lee County's reliability grade?
Lee County has a Reliability Grade of B, in the 61st national percentile.
What was the worst power outage in Lee County?
The worst outage on record started June 29, 2023 (Thunderstorm Wind), lasting 4 hours and affecting up to 14,325 customers.