Humphreys CountyPower Outage History
What this grade means
(How grades are calculated)Bottom 20% least reliable nationally — frequent and/or long outages. This county ranks in the least reliable fifth of all US counties in our dataset: some combination of frequent outages, long restoration times, or customers affected puts it near the bottom nationally. Backup power is worth prioritizing here rather than treating it as optional.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Mar 25, 2023 | 90 hrs | 2,449 (63%) | Tornado |
| May 26, 2015 | 7 hrs | 1,782 (46%) | Unnamed event |
| Nov 29, 2015 | 7 hrs | 1,760 (45%) | Unnamed event |
| May 4, 2019 | 9 hrs | 1,722 (44%) | Unnamed event |
| Dec 1, 2018 | 4 hrs | 1,720 (44%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Humphreys County, Mississippi that day.
Over the 12 years from 2014 to 2025, Humphreys County recorded 534 distinct power outage events, averaging 4.5 hours per event.
The single worst outage on record in Humphreys County started March 25, 2023 (Tornado), lasting 90 hours and leaving up to 2,449 customers without power (63% of the county) at its peak.
June has historically been the worst month for outages in Humphreys County, with 70 events recorded during that month across the dataset.
Based on this history, Humphreys County earns a Reliability Grade of F, placing it in the 15th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Mississippi
Counties with the closest reliability grade and national percentile to Humphreys County.
| County | Grade | National percentile |
|---|---|---|
| Scott County | F | 15th |
| Sharkey County | F | 13th |
| Newton County | F | 13th |
| Montgomery County | F | 13th |
| Tunica County | F | 12th |
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 Humphreys County?
Between 2014 and 2025, Humphreys County recorded 534 outage events, averaging 4.5 hours each.
What is Humphreys County's reliability grade?
Humphreys County has a Reliability Grade of F, in the 15th national percentile.
What was the worst power outage in Humphreys County?
The worst outage on record started March 25, 2023 (Tornado), lasting 90 hours and affecting up to 2,449 customers.