Power outage history
Cass County Missouri
6.0hours
without power for the average customer in a typical year, 2018–2025
40th most of 110 in Missouri close to the national median
Every day since 2015
Eleven years, one night at a time
Each cell is a day. The brighter it is, the larger the share of Cass's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2019 was the worst well-recorded year, at 11 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Cass, hours without power per customer
The record
The biggest outages since 2015
Ranked by customer-hours lost: customers out multiplied by how long they stayed out. Times are local.
| Began | Storm | Peak out | Share | Lasted | 90% restored | Customer-hours |
|---|---|---|---|---|---|---|
| Jan 12, 2019 | Winter storm | 6,318 | 19% | 3.4 d | 3.0 d | 222k |
| Mar 6, 2017 | Thunderstorms | 28,647 | 88% | 14 h | 7.2 h | 149k |
| May 25, 2024 | Thunderstorms | 7,280 | 22% | 36 h | 20 h | 79k |
| May 4, 2020 | Thunderstorms | 6,073 | 19% | 15 h | 9.2 h | 43k |
| Jun 26, 2015 | Thunderstorms | 4,334 | 13% | 16 h | 7.8 h | 32k |
| Jul 14, 2023 | No storm report | 2,900 | 9% | 24 h | 18 h | 25k |
| Jan 9, 2024 | No storm report | 3,596 | 11% | 13 h | 10 h | 23k |
| Feb 13, 2021 | No storm report | 2,119 | 7% | 12 h | 8.5 h | 22k |
| Oct 24, 2024 | No storm report | 5,969 | 18% | 4.2 h | 3.8 h | 21k |
| Aug 19, 2025 | No storm report | 6,600 | 20% | 3.5 h | 2.0 h | 20k |
| Mar 5, 2025 | No storm report | 1,924 | 6% | 20 h | 17 h | 19k |
| Jun 21, 2019 | Thunderstorms | 4,328 | 13% | 9.8 h | 7.0 h | 19k |
| May 19, 2024 | No storm report | 3,301 | 10% | 7.8 h | 5.2 h | 17k |
| Jun 5, 2020 | Thunderstorms | 3,410 | 11% | 17 h | 12 h | 16k |
| Nov 25, 2018 | Winter storm | 3,041 | 9% | 10 h | 8.5 h | 15k |
| Sep 23, 2023 | Thunderstorms | 2,148 | 7% | 13 h | 7.0 h | 14k |
| Apr 26, 2016 | Thunderstorms | 1,222 | 4% | 18 h | – | 13k |
| Dec 15, 2022 | No storm report | 3,241 | 10% | 5.2 h | 5.0 h | 11k |
| May 16, 2015 | Thunderstorms | 2,504 | 8% | 10 h | 6.8 h | 11k |
| Mar 5, 2021 | No storm report | 4,428 | 14% | 4.2 h | 12 h | 10k |
| Jul 2, 2024 | No storm report | 3,565 | 11% | 5.2 h | 4.2 h | 10k |
| Feb 7, 2021 | No storm report | 2,271 | 7% | 10 h | 4.2 h | 9.8k |
| Apr 30, 2017 | Windstorm | 1,483 | 5% | 11 h | – | 9.6k |
| Sep 18, 2025 | No storm report | 3,083 | 9% | 6.5 h | 2.0 h | 9.5k |
| Jul 1, 2015 | Thunderstorms | 2,586 | 8% | 6.5 h | 4.5 h | 9.4k |
| Dec 15, 2021 | Thunderstorms | 3,563 | 11% | 6.8 h | 3.0 h | 9.2k |
| May 20, 2019 | No storm report | 1,487 | 5% | 7.0 h | – | 8.4k |
| Jul 17, 2025 | No storm report | 3,056 | 9% | 4.0 h | 2.8 h | 8.3k |
| Nov 10, 2024 | No storm report | 622 | 2% | 16 h | – | 8.0k |
| Jun 8, 2022 | No storm report | 1,111 | 3% | 12 h | – | 7.9k |
After the peak
How fast the lights come back
Each line is one major outage, from its peak. The amber line is the typical path.
When it happens
The outage clock
Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.
What was happening
Weather behind the outages
Each outage is matched to NOAA storm reports for Cass from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- No storm on record 55%
- Winter storm 23%
- Thunderstorms 20%
- Flooding 1.0%
- Windstorm 0.6%
Who keeps the lights on
Utilities serving Cass
As each utility reports to the Energy Information Administration for its whole Missouri territory, not this county alone. Outage minutes include major storm days.
| Utility | Type | Outage min / yr | Excl. major storms | Outages / yr | Residential ¢/kWh | Customers |
|---|---|---|---|---|---|---|
| Evergy Missouri West | Investor Owned | 184 | 104 | 1.49 | 12.1 | 309k |
| Evergy Metro | Investor Owned | 178 | 99 | 1.50 | 13.6 | 276k |
| City of Harrisonville | MO | 86 | 16 | 0.35 | 12.1 | 42k |
| Osage Valley Elec Coop Assn | Cooperative | 379 | 3 | 0.69 | 14.8 | 17k |
| West Central Electric Coop Inc | Cooperative | 109 | 67 | 0.95 | 12.9 | 16k |
EIA Form 861, latest year each utility reported. Outage minutes are SAIDI, the yearly minutes the average customer goes without power; outages a year are SAIFI.
Next door
Neighbouring counties
About these numbers
Notes
Outages come from the EAGLE-I record of utility outage maps collected every 15 minutes by Oak Ridge National Laboratory. Hours without power are customer-hours divided by the county's 32,470 electricity customers. Averages use well-covered years from 2018. Outages shorter than 15 minutes, and utilities that publish no outage map, are not in the record, so these figures understate the total. How every number is made →