County annual report · FIPS 28063
2016 Jefferson County, MS Power Outage Report
In 2016, customers in Jefferson County, MS went without power for an average of 1.5 hours, a total of 6,009 customer-hours (Mississippi average 3.1 hours). That ranks 42nd worst of 71 Mississippi counties and 1541st of 2,391 nationally.
Compared with MS, the US and 2015
Coverage line is EAGLE-I's share of Mississippi customers tracked each year.
Biggest outages in Jefferson County, 2016
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | November 29, 2016 19:00 | November 29, 2016 20:00 | 1h | 1,310 | 673 |
| 2 | December 21, 2016 21:45 | December 21, 2016 22:15 | 30m | 1,253 | 317 |
| 3 | June 7, 2016 21:30 | June 7, 2016 23:15 | 1h 45m | 402 | 603 |
| 4 | September 7, 2016 08:00 | September 7, 2016 09:45 | 1h 45m | 326 | 426 |
| 5 | March 18, 2016 17:30 | March 20, 2016 02:00 | 1d 8h | 140 | 927 |
| 6 | March 23, 2016 11:30 | March 23, 2016 14:00 | 2h 30m | 90 | 120 |
| 7 | November 28, 2016 18:00 | November 28, 2016 19:30 | 1h 30m | 85 | 125 |
| 8 | January 5, 2016 12:30 | January 5, 2016 15:00 | 2h 30m | 81 | 203 |
| 9 | May 31, 2016 22:15 | May 31, 2016 22:30 | 15m | 80 | 20 |
| 10 | June 8, 2016 15:45 | June 8, 2016 22:15 | 6h 30m | 70 | 455 |
Outage episodes by size in 2016: 5 reached 100+ customers, 2 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 Jefferson County reported on EIA Form 861 for 2016, 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 | 2016 | 6.2 hrs | 2.06 | 3.5 hrs | 1.64 |
| Southwest Mississippi E P A | 2016 | 18.7 hrs | - | 13.6 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 2016; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 4,028 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. Jefferson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Jefferson County, MS annual power outage report, 2016, 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/2016/mississippi/jefferson-county