Chickasaw County Power Outage History
2015–2025 · Iowa
Top 20% most reliable nationally — infrequent, short outages. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jun 22, 2022 | 0 hrs | 1,854 (21%) | Hail |
| Jun 21, 2022 | 2 hrs | 1,735 (20%) | Hail |
| Jul 9, 2020 | 2 hrs | 1,439 (16%) | Thunderstorm Wind |
| Jul 19, 2017 | 26 hrs | 1,401 (16%) | Thunderstorm Wind |
| May 21, 2024 | 18 hrs | 1,286 (15%) | Drought |
Over the 11 years from 2015 to 2025, Chickasaw County recorded 203 distinct power outage events, averaging 3.2 hours per event.
The single worst outage on record in Chickasaw County started June 22, 2022 (Hail), lasting 0 hours and leaving up to 1,854 customers without power (21% of the county) at its peak.
June has historically been the worst month for outages in Chickasaw County, with 35 events recorded during that month across the dataset.
Based on this history, Chickasaw County earns a Reliability Grade of A, placing it in the 85th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Chickasaw County's outage profile
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Similar counties in Iowa
Counties with the closest reliability grade and national percentile to Chickasaw County.
| County | Grade | National percentile |
|---|---|---|
| Dickinson County | A | 85th |
| Buchanan County | A | 84th |
| Kossuth County | A | 86th |
| Sioux County | A | 86th |
| Palo Alto County | A | 86th |
FAQ
How often does power go out in Chickasaw County?
Between 2015 and 2025, Chickasaw County recorded 203 outage events, averaging 3.2 hours each.
What is Chickasaw County's reliability grade?
Chickasaw County has a Reliability Grade of A, in the 85th national percentile.
What was the worst power outage in Chickasaw County?
The worst outage on record started June 22, 2022 (Hail), lasting 0 hours and affecting up to 1,854 customers.