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

Power outage history

Ozark County Missouri

11hours

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

13th most of 110 in Missouri 1.7× the national median

Worst outage on record Aug 10, 2023 24% of customers out · 90% back in 14 hours
Hours without power, average customer per year 11h / yr State average 5.2 h · national median 6.6 h
Major outages a year 7.1 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 4.3days Aug 10, 2023, over 1% of customers out
Outage hours on storm days 75% Share falling on days with a NOAA storm report here
Worst year 2023 38 hours without power, average customer
Electricity customers 4,000 ORNL customer model · 7 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 Ozark'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 38 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Ozark, hours without power per customer

OzarkUS median countyMissouri average
0 10 20 30 5.6 ’19 3.8 ’20 9.8 ’21 2.2 ’22 38 ’23 9.4 ’24 11 ’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
Aug 10, 2023 Thunderstorms 950 24% 4.3 d 14 h 43k
Jul 17, 2023 Thunderstorms 2,101 53% 2.1 d 47 h 43k
Jan 24, 2023 Winter storm 931 23% 2.8 d 2.5 d 40k
Jun 11, 2021 Thunderstorms 1,820 46% 43 h 35 h 24k
Oct 21, 2019 Thunderstorms 1,404 35% 44 h 41 h 15k
Mar 14, 2025 Wildfire 646 16% 3.2 d 2.5 d 14k
Nov 4, 2024 Flooding 540 14% 2.6 d 47 h 13k
Jul 29, 2023 Thunderstorms 1,388 35% 13 h 12 h 11k
May 24, 2025 Flooding 950 24% 7.5 h 2.5 h 4.9k
Jun 9, 2024 No storm report 740 19% 14 h 8.8 h 3.6k
Jul 31, 2021 Thunderstorms 756 19% 13 h 4.5 h 2.9k
Jun 3, 2024 No storm report 428 11% 6.0 h 4.5 h 2.2k

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 +6h 90% by +16h

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

  • Thunderstorms 50%
  • No storm on record 25%
  • Winter storm 13%
  • Flooding 6.6%
  • Wildfire 4.6%

Who keeps the lights on

Utilities serving Ozark

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
White River Valley El Coop Inc Cooperative – – – 15.5 39k
Howell-Oregon Elec Coop, Inc Cooperative – – – 13.1 23k

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 4,000 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 →