Power Out Map
– 0% of Simpson out 0 customers out in Mississippi

Power outage history

Simpson County Mississippi

16hours

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

26th most of 74 in Mississippi 2.4× the national median

Worst outage on record Jun 16, 2023 52% of customers out · 90% back in 4.1 days
Hours without power, average customer per year 16h / yr State average 9.8 h · national median 6.6 h
Major outages a year 5.0 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 7hours Median across major outages, from the peak
Longest single outage 5.5days Jun 16, 2023, over 1% of customers out
Outage hours on storm days 73% Share falling on days with a NOAA storm report here
Worst year 2023 31 hours without power, average customer
Electricity customers 15,818 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 Simpson'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

2023 was the worst well-recorded year, at 31 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Simpson, hours without power per customer

SimpsonUS median countyMississippi average
0 10 20 30 40 3.2 ’15 9.6 ’16 17 ’17 4.0 ’18 13 ’19 11 ’20 26 ’21 10 ’22 31 ’23 21 ’24 11 ’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
Jun 16, 2023 Thunderstorms 8,287 52% 5.5 d 4.1 d 357k
Feb 15, 2021 Ice storm 6,502 41% 5.4 d 2.6 d 258k
Dec 28, 2024 Tornadoes 6,225 39% 3.8 d 3.0 d 191k
Dec 8, 2017 Winter storm 10,727 68% 38 h 6.5 h 96k
Jun 16, 2017 Thunderstorms 4,556 29% 2.1 d 38 h 80k
Aug 30, 2021 Hurricane Ida 3,605 23% 41 h 33 h 66k
Oct 26, 2019 Tropical Storm Olga 5,900 37% 39 h 6.0 h 64k
Apr 22, 2020 Thunderstorms 5,638 36% 44 h 13 h 61k
Apr 18, 2019 Tornadoes 2,596 16% 48 h 30 h 48k
Jun 25, 2023 No storm report 3,617 23% 41 h 37 h 47k
Mar 31, 2016 Thunderstorms 4,838 31% 26 h 21 h 36k
Apr 17, 2022 Tornadoes 2,067 13% 26 h 24 h 32k

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 +10h 90% by +32h

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 Simpson from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

  • Thunderstorms 29%
  • No storm on record 27%
  • Tornadoes 17%
  • Ice storm 15%
  • Tropical storm 11%
  • Flooding 0.5%

Who keeps the lights on

Utilities serving Simpson

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
Southern Pine Electric Cooperative Cooperative 649 447 5.46 14.5 66k

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 15,818 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 →