Yuma CountyPower Outage History
What this grade means
Top 20% most reliable nationally — infrequent, short outages. This county ranks in the most reliable fifth of all US counties in our dataset, based on 12 years of real DOE outage records: outages happen less often here, and when they do occur they tend to be resolved quickly compared to the rest of the country. Baseline outage risk is low, though a severe local storm can still occasionally cause a longer-than-usual outage regardless of the long-term track record.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Sep 5, 2025 | 19 hrs | 19,028 (17%) | Thunderstorm Wind |
| Sep 24, 2019 | 37 hrs | 14,152 (13%) | Flash Flood |
| Aug 20, 2023 | 14 hrs | 9,794 (9%) | Tropical Storm Hilary |
| Nov 14, 2019 | <1 hr | 7,512 (7%) | Unnamed event |
| Jun 14, 2017 | 1 hrs | 7,011 (6%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Yuma County, Arizona that day.
Over the 9 years from 2017 to 2025, Yuma County recorded 468 distinct power outage events, averaging 2.7 hours per event.
The single worst outage on record in Yuma County started September 5, 2025 (Thunderstorm Wind), lasting 19 hours and leaving up to 19,028 customers without power (17% of the county) at its peak.
August has historically been the worst month for outages in Yuma County, with 65 events recorded during that month across the dataset.
Based on this history, Yuma County earns a Reliability Grade of A, placing it in the 89th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Arizona
Counties with the closest reliability grade and national percentile to Yuma County.
| County | Grade | National percentile |
|---|---|---|
| Greenlee County | A | 89th |
| Yavapai County | A | 88th |
| Apache County | A | 87th |
| Maricopa County | A | 86th |
| Pima County | A | 86th |
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 Yuma County?
Between 2017 and 2025, Yuma County recorded 468 outage events, averaging 2.7 hours each.
What is Yuma County's reliability grade?
Yuma County has a Reliability Grade of A, in the 89th national percentile.
What was the worst power outage in Yuma County?
The worst outage on record started September 5, 2025 (Thunderstorm Wind), lasting 19 hours and affecting up to 19,028 customers.