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

Power outage history

Walthall County Mississippi

21hours

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

16th most of 74 in Mississippi 3.2× the national median

Worst outage on record Feb 15, 2021 89% of customers out · 90% back in 2.8 days
Hours without power, average customer per year 21h / yr State average 9.8 h · national median 6.6 h
Major outages a year 6.9 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 7.2days Hurricane Ida, over 1% of customers out
Outage hours on storm days 43% Share falling on days with a NOAA storm report here
Worst year 2021 2.8 days without power, average customer
Electricity customers 6,910 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 Walthall'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 2.8 days for the average customer. Hatched years have a thin record and are left out of the averages.

Walthall, hours without power per customer

WalthallUS median countyMississippi average
0 20 40 60 80 2.7 ’15 1.1 ’16 26 ’17 5.9 ’18 13 ’19 18 ’20 67 ’21 6.7 ’22 9.3 ’23 19 ’24 31 ’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 No storm report 6,121 89% 4.6 d 2.8 d 254k
Aug 29, 2021 Hurricane Ida 3,737 54% 7.2 d 12 h 132k
Mar 15, 2025 Tornadoes 3,587 52% 5.0 d 3.2 d 124k
Dec 8, 2017 Winter storm 3,034 44% 3.4 d 3.2 h 105k
Apr 10, 2021 Thunderstorms 1,849 27% 43 h 33 h 38k
Apr 10, 2024 No storm report 2,865 41% 30 h 25 h 27k
Jun 4, 2024 No storm report 2,160 31% 43 h 6.2 h 26k
Jan 2, 2017 Tornadoes 1,730 25% 47 h 46 h 25k
Oct 26, 2019 Tropical Storm Olga 2,607 38% 34 h 26 h 24k
Apr 19, 2020 Tornadoes 2,280 33% 25 h 3.5 h 24k
Oct 9, 2020 Hurricane Delta 3,103 45% 22 h 8.2 h 23k
Feb 15, 2025 Thunderstorms 1,599 23% 17 h 11 h 16k

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 +26h

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

  • No storm on record 57%
  • Tropical storm 20%
  • Tornadoes 16%
  • Thunderstorms 7.4%

Who keeps the lights on

Utilities serving Walthall

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
Pearl River Valley El Pwr Assn Cooperative 295 261 3.79 15.6 53k
Magnolia Electric Power Assn Cooperative 1,258 – – 16.1 31k

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 6,910 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 →