County annual report · FIPS 28147
2017 Walthall County, MS Power Outage Report
In 2017, customers in Walthall County, MS went without power for an average of 25.8 hours, a total of 178K customer-hours (Mississippi average 6.6 hours). That ranks 2nd worst of 77 Mississippi counties and 209th of 2,786 nationally.
Compared with MS, the US and 2016
Coverage line is EAGLE-I's share of Mississippi customers tracked each year.
Biggest outages in Walthall County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 22, 2017 20:15 | July 22, 2017 22:00 | 1h 45m | 5,585 | 4,699 |
| 2 | December 8, 2017 10:45 | December 12, 2017 03:15 | 3d 16h | 3,034 | 105K |
| 3 | January 2, 2017 19:15 | January 4, 2017 20:15 | 2d 1h | 1,730 | 25K |
| 4 | April 27, 2017 11:30 | April 27, 2017 18:45 | 7h 15m | 1,229 | 6,685 |
| 5 | December 5, 2017 20:30 | December 6, 2017 02:30 | 6h | 972 | 3,024 |
| 6 | August 16, 2017 13:00 | August 16, 2017 15:30 | 2h 30m | 943 | 473 |
| 7 | July 8, 2017 12:45 | July 8, 2017 19:45 | 7h | 863 | 996 |
| 8 | October 16, 2017 09:45 | October 16, 2017 12:30 | 2h 45m | 829 | 2,278 |
| 9 | October 16, 2017 13:30 | October 16, 2017 14:15 | 45m | 828 | 208 |
| 10 | March 30, 2017 16:00 | March 30, 2017 21:15 | 5h 15m | 794 | 3,113 |
Outage episodes by size in 2017: 42 reached 100+ customers, 4 reached 1,000+ customers, 0 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Walthall County reported on EIA Form 861 for 2017, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Entergy Mississippi LLC | 2017 | 10.6 hrs | 2.34 | 3.2 hrs | 1.42 |
| Pearl River Valley El Pwr Assn | 2017 | 11.3 hrs | 3.14 | 3.5 hrs | 2.30 |
| Magnolia Electric Power Assn | 2017 | 9.5 hrs | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Mississippi's customers in 2017; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 6,910 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Walthall County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Walthall County, MS annual power outage report, 2017, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2017/mississippi/walthall-county