Dickinson County Power Outage History
2014–2025 · 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 |
|---|---|---|---|
| Mar 9, 2019 | 2 hrs | 9,861 (75%) | Winter Weather |
| Apr 23, 2022 | 2 hrs | 8,530 (65%) | Hail |
| May 11, 2022 | 2 hrs | 7,916 (61%) | Thunderstorm Wind |
| Apr 14, 2018 | 3 hrs | 4,275 (33%) | Winter Storm |
| Aug 21, 2017 | 1 hrs | 4,160 (32%) | Unnamed event |
Over the 12 years from 2014 to 2025, Dickinson County recorded 320 distinct power outage events, averaging 1.8 hours per event.
The single worst outage on record in Dickinson County started March 9, 2019 (Winter Weather), lasting 2 hours and leaving up to 9,861 customers without power (75% of the county) at its peak.
June has historically been the worst month for outages in Dickinson County, with 52 events recorded during that month across the dataset.
Based on this history, Dickinson County earns a Reliability Grade of A, placing it in the 85th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Dickinson County's outage profile
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Similar counties in Iowa
Counties with the closest reliability grade and national percentile to Dickinson County.
| County | Grade | National percentile |
|---|---|---|
| Chickasaw County | A | 85th |
| Buchanan County | A | 84th |
| Kossuth County | A | 86th |
| Sioux County | A | 86th |
| Mahaska County | A | 84th |
FAQ
How often does power go out in Dickinson County?
Between 2014 and 2025, Dickinson County recorded 320 outage events, averaging 1.8 hours each.
What is Dickinson County's reliability grade?
Dickinson County has a Reliability Grade of A, in the 85th national percentile.
What was the worst power outage in Dickinson County?
The worst outage on record started March 9, 2019 (Winter Weather), lasting 2 hours and affecting up to 9,861 customers.