County annual report · FIPS 28147
2015 Walthall County, MS Power Outage Report
In 2015, customers in Walthall County, MS went without power for an average of 2.8 hours, a total of 19K customer-hours (Mississippi average 2.6 hours). That ranks 29th worst of 70 Mississippi counties and 976th of 2,484 nationally.
Compared with MS, the US
Coverage line is EAGLE-I's share of Mississippi customers tracked each year.
Biggest outages in Walthall County, 2015
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 4, 2015 19:15 | July 6, 2015 02:15 | 1d 7h | 1,112 | 12K |
| 2 | June 9, 2015 12:45 | June 9, 2015 14:45 | 2h | 1,104 | 1,932 |
| 3 | June 28, 2015 14:30 | June 28, 2015 14:45 | 15m | 1,100 | 275 |
| 4 | October 29, 2015 16:00 | October 29, 2015 21:15 | 5h 15m | 252 | 576 |
| 5 | February 6, 2015 16:15 | February 6, 2015 17:30 | 1h 15m | 228 | 229 |
| 6 | August 21, 2015 20:00 | August 21, 2015 21:45 | 1h 45m | 121 | 136 |
| 7 | September 3, 2015 20:00 | September 3, 2015 21:00 | 1h | 115 | 115 |
| 8 | June 30, 2015 22:00 | June 30, 2015 23:15 | 1h 15m | 95 | 119 |
| 9 | November 17, 2015 17:30 | November 17, 2015 21:00 | 3h 30m | 88 | 158 |
| 10 | January 20, 2015 16:45 | January 20, 2015 20:15 | 3h 30m | 87 | 281 |
Outage episodes by size in 2015: 7 reached 100+ customers, 3 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 2015, 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 | 2015 | 6.1 hrs | 2.02 | 4.2 hrs | 1.71 |
| Pearl River Valley El Pwr Assn | 2015 | 2.0 hrs | 1.96 | 2.0 hrs | 1.96 |
| Magnolia Electric Power Assn | 2015 | 6.5 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 2015; 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, 2015, 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/2015/mississippi/walthall-county