County annual report · FIPS 28147
2018 Walthall County, MS Power Outage Report
In 2018, customers in Walthall County, MS went without power for an average of 5.9 hours, a total of 41K customer-hours (Mississippi average 3.0 hours). That ranks 21st worst of 76 Mississippi counties and 927th of 2,798 nationally.
Compared with MS, the US and 2017
Coverage line is EAGLE-I's share of Mississippi customers tracked each year.
Biggest outages in Walthall County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 4, 2018 15:30 | April 4, 2018 18:00 | 2h 30m | 2,087 | 3,008 |
| 2 | September 14, 2018 18:00 | September 14, 2018 18:30 | 30m | 2,083 | 1,042 |
| 3 | April 14, 2018 13:45 | April 15, 2018 07:30 | 17h 45m | 1,246 | 2,325 |
| 4 | September 17, 2018 18:15 | September 17, 2018 21:00 | 2h 45m | 1,135 | 2,244 |
| 5 | August 18, 2018 20:00 | August 19, 2018 03:30 | 7h 30m | 928 | 2,664 |
| 6 | November 1, 2018 09:00 | November 1, 2018 22:45 | 13h 45m | 928 | 7,100 |
| 7 | April 5, 2018 00:00 | April 5, 2018 01:30 | 1h 30m | 861 | 883 |
| 8 | May 10, 2018 17:45 | May 10, 2018 18:00 | 15m | 784 | 196 |
| 9 | May 24, 2018 21:30 | May 24, 2018 23:15 | 1h 45m | 622 | 623 |
| 10 | April 20, 2018 17:00 | April 20, 2018 20:30 | 3h 30m | 597 | 1,582 |
Outage episodes by size in 2018: 34 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 2018, 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 | 2018 | 5.3 hrs | 1.81 | 4.2 hrs | 1.64 |
| Pearl River Valley El Pwr Assn | 2018 | 2.7 hrs | 1.99 | 2.2 hrs | 1.84 |
| Magnolia Electric Power Assn | 2018 | 5.3 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 66% of Mississippi's customers in 2018; 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, 2018, 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/2018/mississippi/walthall-county