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

Power outage history

Mississippi County Missouri

4.4hours

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

65th most of 110 in Missouri 33% below the national median

Worst outage on record Apr 2, 2024 82% of customers out · 90% back in 24 hours
Hours without power, average customer per year 4.4h / yr State average 5.2 h · national median 6.6 h
Major outages a year 2.0 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 3hours Median across major outages, from the peak
Longest single outage 2.4days May 26, 2024, over 1% of customers out
Outage hours on storm days 33% Share falling on days with a NOAA storm report here
Worst year 2024 16 hours without power, average customer
Electricity customers 5,838 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 Mississippi'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

2024 was the worst well-recorded year, at 16 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Mississippi, hours without power per customer

MississippiUS median countyMissouri average
0 5 10 15 20 2.3 ’15 3.5 ’16 12 ’17 0.7 ’18 8.3 ’19 2.7 ’20 1.6 ’21 1.7 ’22 2.0 ’23 16 ’24 2.2 ’25 US 6.6 MO 5.2

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
Apr 2, 2024 No storm report 4,773 82% 26 h 24 h 75k
Mar 1, 2017 Tornadoes 2,823 48% 22 h 18 h 49k
Jun 21, 2019 Thunderstorms 2,221 38% 44 h 40 h 35k
Mar 6, 2017 No storm report 4,670 80% 7.8 h 1.8 h 19k
May 26, 2024 No storm report 556 10% 2.4 d 2.1 d 12k
Jul 20, 2015 No storm report 2,362 40% 2.8 h 9.8 h 6.3k
Feb 11, 2019 Flooding 2,975 51% 2.5 h 10 h 6.0k
Jun 26, 2020 No storm report 2,411 41% 2.5 h 2.5 h 5.4k
May 3, 2020 Thunderstorms 715 12% 8.8 h 7.5 h 5.1k
Apr 5, 2022 No storm report 2,927 50% 1.5 h 1.2 h 4.2k
May 8, 2023 Thunderstorms 1,524 26% 10 h 48 min 4.1k
Jul 27, 2016 No storm report 2,838 49% 5.0 h 48 min 3.8k

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 +4h 90% by +4h

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

  • No storm on record 67%
  • Thunderstorms 25%
  • Flooding 3.8%
  • Windstorm 2.7%
  • Winter storm 1.1%
  • Heat 0.7%

Who keeps the lights on

Utilities serving Mississippi

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

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
Union Electric Co Investor Owned 594 119 1.18 13.3 1.1M
SEMO Electric Cooperative Cooperative 822 607 2.58 13.5 11k

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 Missouri

Where it is darkest

Hours / yr64+

All Missouri 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 5,838 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 →