County annual report · FIPS 28155
2021 Webster County, MS Power Outage Report
In 2021, customers in Webster County, MS went without power for an average of 1.1 hours, a total of 6,086 customer-hours (Mississippi average 17.2 hours). That ranks 72nd worst of 78 Mississippi counties and 2625th of 2,974 nationally.
Compared with MS, the US and 2020
Coverage line is EAGLE-I's share of Mississippi customers tracked each year.
Biggest outages in Webster County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 21, 2021 19:00 | June 21, 2021 23:30 | 4h 30m | 177 | 551 |
| 2 | July 23, 2021 19:30 | July 23, 2021 23:00 | 3h 30m | 155 | 329 |
| 3 | August 2, 2021 12:30 | August 2, 2021 13:00 | 30m | 155 | 78 |
| 4 | February 18, 2021 03:00 | February 19, 2021 23:15 | 1d 20h | 123 | 2,574 |
| 5 | May 5, 2021 00:30 | May 5, 2021 16:00 | 15h 30m | 111 | 122 |
| 6 | March 18, 2021 00:15 | March 18, 2021 03:15 | 3h | 100 | 226 |
| 7 | March 28, 2021 08:15 | March 28, 2021 22:00 | 13h 45m | 85 | 856 |
| 8 | May 10, 2021 10:00 | May 10, 2021 18:45 | 8h 45m | 62 | 69 |
| 9 | September 9, 2021 18:45 | September 9, 2021 19:45 | 1h | 51 | 51 |
| 10 | October 20, 2021 18:00 | October 20, 2021 19:15 | 1h 15m | 47 | 59 |
Outage episodes by size in 2021: 6 reached 100+ customers, 0 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 Webster County reported on EIA Form 861 for 2021, 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 | 2021 | 22.9 hrs | 2.44 | 4.7 hrs | 1.50 |
| Delta Electric Power Assn | 2021 | 64.6 hrs | 4.93 | 7.6 hrs | 4.19 |
| 4-County Electric Power Assn | 2021 | 8.5 hrs | 2.00 | 1.9 hrs | 1.31 |
| Natchez Trace Elec Power Assn | 2021 | 11.2 hrs | - | 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 77% of Mississippi's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 5,545 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. Webster County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Webster County, MS annual power outage report, 2021, 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/2021/mississippi/webster-county