Cass County Power Outage History
2015–2025 · Missouri
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 |
|---|---|---|---|
| Mar 7, 2017 | 14 hrs | 28,647 (43%) | Hail |
| May 26, 2024 | 41 hrs | 7,280 (11%) | Thunderstorm Wind |
| Aug 19, 2025 | 7 hrs | 6,600 (10%) | Unnamed event |
| Jan 12, 2019 | 83 hrs | 6,318 (9%) | Winter Storm |
| May 4, 2020 | 18 hrs | 6,073 (9%) | Thunderstorm Wind |
Over the 11 years from 2015 to 2025, Cass County recorded 698 distinct power outage events, averaging 2.6 hours per event.
The single worst outage on record in Cass County started March 7, 2017 (Hail), lasting 14 hours and leaving up to 28,647 customers without power (43% of the county) at its peak.
June has historically been the worst month for outages in Cass County, with 91 events recorded during that month across the dataset.
Based on this history, Cass County earns a Reliability Grade of B, placing it in the 70th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Cass County's outage profile
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Outage-prep kit
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Similar counties in Missouri
Counties with the closest reliability grade and national percentile to Cass County.
| County | Grade | National percentile |
|---|---|---|
| Schuyler County | B | 70th |
| Atchison County | B | 71st |
| Douglas County | B | 71st |
| Texas County | B | 72nd |
| Camden County | B | 72nd |
FAQ
How often does power go out in Cass County?
Between 2015 and 2025, Cass County recorded 698 outage events, averaging 2.6 hours each.
What is Cass County's reliability grade?
Cass County has a Reliability Grade of B, in the 70th national percentile.
What was the worst power outage in Cass County?
The worst outage on record started March 7, 2017 (Hail), lasting 14 hours and affecting up to 28,647 customers.