Power Out Map
– 0% of Jefferson Davis out 0 customers out in Mississippi

Power outage history

Jefferson Davis County Mississippi

23hours

without power for the average customer in a typical year, 2018–2025

15th most of 74 in Mississippi 3.4× the national median

Worst outage on record Feb 15, 2021 81% of customers out · 90% back in 4.4 days
Hours without power, average customer per year 23h / yr State average 9.8 h · national median 6.6 h
Major outages a year 9.4 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 5hours Median across major outages, from the peak
Longest single outage 5.3days Feb 15, 2021, over 1% of customers out
Outage hours on storm days 67% Share falling on days with a NOAA storm report here
Worst year 2021 2.1 days without power, average customer
Electricity customers 5,468 ORNL customer model · 8 well-covered years

Every day since 2015

Eleven years, one night at a time

Each cell is a day. The brighter it is, the larger the share of Jefferson Davis's customers who were without power at that day's worst moment.

20152016201720182019202020212022202320242025
0%100% of customers out

Year by year

Hours in the dark, per customer

2021 was the worst well-recorded year, at 2.1 days for the average customer. Hatched years have a thin record and are left out of the averages.

Jefferson Davis, hours without power per customer

Jefferson DavisUS median countyMississippi average
0 20 40 60 2.6 ’15 6.9 ’16 21 ’17 4.5 ’18 25 ’19 30 ’20 49 ’21 8.7 ’22 19 ’23 22 ’24 23 ’25 MS 9.8 US 6.6

The record

The biggest outages since 2015

Ranked by customer-hours lost: customers out multiplied by how long they stayed out. Times are local.

Began Storm Peak out Share Lasted 90% restored Customer-hours
Feb 15, 2021 Ice storm 4,408 81% 5.3 d 4.4 d 211k
Oct 26, 2019 Tropical Storm Olga 5,468 100% 2.7 d 39 h 105k
Dec 8, 2017 Winter storm 5,455 100% 2.5 d 15 h 63k
Jun 16, 2023 No storm report 3,129 57% 3.4 d 2.1 d 60k
Apr 22, 2020 Thunderstorms 2,777 51% 2.8 d 12 min 37k
Mar 15, 2025 Tornadoes 2,215 41% 2.2 d 29 h 37k
Aug 30, 2021 Hurricane Ida 1,695 31% 41 h 23 h 26k
Apr 14, 2020 No storm report 824 15% 3.1 d 2.2 d 24k
Jun 16, 2017 Thunderstorms 1,771 32% 37 h 28 h 23k
Apr 13, 2020 No storm report 2,746 50% 23 h 35 h 23k
Dec 28, 2024 Thunderstorms 1,552 28% 47 h 38 h 22k
May 13, 2024 Thunderstorms 1,686 31% 31 h 29 h 21k

After the peak

How fast the lights come back

Each line is one major outage, from its peak. The amber line is the typical path.

0% 25% 50% 75% 100% peak+24h+48h+72h+96h half back by +8h 90% by +40h

When it happens

The outage clock

Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.

00061218 Jan inside

What was happening

Weather behind the outages

Each outage is matched to NOAA storm reports for Jefferson Davis from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

  • No storm on record 33%
  • Ice storm 23%
  • Thunderstorms 19%
  • Tropical storm 18%
  • Tornadoes 7.2%

Who keeps the lights on

Utilities serving Jefferson Davis

As each utility reports to the Energy Information Administration for its whole Mississippi territory, not this county alone. Outage minutes include major storm days.

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
Entergy Mississippi LLC Investor Owned 640 410 2.61 13.9 384k
Mississippi Power Co Investor Owned 105 76 1.03 15.7 158k
Southern Pine Electric Cooperative Cooperative 649 447 5.46 14.5 66k
Pearl River Valley El Pwr Assn Cooperative 295 261 3.79 15.6 53k

EIA Form 861, latest year each utility reported. Outage minutes are SAIDI, the yearly minutes the average customer goes without power; outages a year are SAIFI.

Next door

Neighbouring counties

Across Mississippi

Where it is darkest

Hours / yr64+

All Mississippi counties →

About these numbers

Notes

Outages come from the EAGLE-I record of utility outage maps collected every 15 minutes by Oak Ridge National Laboratory. Hours without power are customer-hours divided by the county's 5,468 electricity customers. Averages use well-covered years from 2018. Outages shorter than 15 minutes, and utilities that publish no outage map, are not in the record, so these figures understate the total. How every number is made →