Ralls CountyPower Outage History
What this grade means
Better than average — fewer or shorter outages than most counties. This county's outage history is better than the national median: recorded outages are less frequent and/or shorter in duration than a typical US county experienced over the same 12-year period. It isn't in the top tier nationally, but its track record points to lower-than-average outage risk.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jul 10, 2021 | 42 hrs | 1,718 (20%) | Thunderstorm Wind |
| Jul 21, 2019 | 5 hrs | 1,209 (14%) | Thunderstorm Wind |
| Apr 20, 2025 | 9 hrs | 1,197 (14%) | Unnamed event |
| Aug 12, 2021 | 4 hrs | 1,074 (13%) | Unnamed event |
| May 4, 2020 | 9 hrs | 1,053 (12%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Ralls County, Missouri that day.
Over the 11 years from 2015 to 2025, Ralls County recorded 444 distinct power outage events, averaging 1.8 hours per event.
The single worst outage on record in Ralls County started July 10, 2021 (Thunderstorm Wind), lasting 42 hours and leaving up to 1,718 customers without power (20% of the county) at its peak.
June has historically been the worst month for outages in Ralls County, with 62 events recorded during that month across the dataset.
Based on this history, Ralls County earns a Reliability Grade of B, placing it in the 78th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Missouri
Counties with the closest reliability grade and national percentile to Ralls County.
| County | Grade | National percentile |
|---|---|---|
| Franklin County | B | 78th |
| Harrison County | B | 78th |
| Jasper County | B | 78th |
| Greene County | B | 77th |
| Ste. Genevieve County | B | 80th |
Most reliable counties nationally
The top 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
Least reliable counties nationally
The bottom 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
FAQ
How often does power go out in Ralls County?
Between 2015 and 2025, Ralls County recorded 444 outage events, averaging 1.8 hours each.
What is Ralls County's reliability grade?
Ralls County has a Reliability Grade of B, in the 78th national percentile.
What was the worst power outage in Ralls County?
The worst outage on record started July 10, 2021 (Thunderstorm Wind), lasting 42 hours and affecting up to 1,718 customers.