Dewey CountyPower Outage History
2014–2025 · Oklahoma
Bottom 20% least reliable nationally — frequent and/or long outages.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Apr 13, 2018 | 169 hrs | 2,281 (49%) | Drought |
| May 19, 2022 | 10 hrs | 1,957 (42%) | Drought |
| Jun 25, 2018 | 35 hrs | 1,872 (40%) | Drought |
| Jan 14, 2017 | 72 hrs | 1,764 (38%) | Drought |
| Nov 11, 2014 | 2 hrs | 1,609 (34%) | Drought |
Over the 12 years from 2014 to 2025, Dewey County recorded 601 distinct power outage events, averaging 3.1 hours per event.
The single worst outage on record in Dewey County started April 13, 2018 (Drought), lasting 169 hours and leaving up to 2,281 customers without power (49% of the county) at its peak.
June has historically been the worst month for outages in Dewey County, with 83 events recorded during that month across the dataset.
Based on this history, Dewey County earns a Reliability Grade of F, placing it in the 18th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Dewey County's outage profile
See more picks in our Best Dual-Fuel Portable Generators for Power Outages roundup.
Champion Power Equipment 4375-Watt Dual Fuel RV Ready Portable Generator with Free 3-Year Warranty
Outage-prep kit
See our outage-prep guides.
Similar counties in Oklahoma
Counties with the closest reliability grade and national percentile to Dewey County.
| County | Grade | National percentile |
|---|---|---|
| Blaine County | F | 17th |
| Jefferson County | F | 18th |
| Kiowa County | F | 17th |
| Harmon County | F | 19th |
| Logan County | F | 19th |
Most reliable counties in Oklahoma
The top 3 counties in Oklahoma by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Texas County | A | 96th |
| Kay County | A | 95th |
| Greer County | A | 89th |
Least reliable counties in Oklahoma
The bottom 3 counties in Oklahoma by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Caddo County | F | 4th |
| Washita County | F | 10th |
| Oklahoma County | F | 15th |
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 Dewey County?
Between 2014 and 2025, Dewey County recorded 601 outage events, averaging 3.1 hours each.
What is Dewey County's reliability grade?
Dewey County has a Reliability Grade of F, in the 18th national percentile.
What was the worst power outage in Dewey County?
The worst outage on record started April 13, 2018 (Drought), lasting 169 hours and affecting up to 2,281 customers.