Power Out Map
– 0% of Sequoyah out 0 customers out in Oklahoma

Power outage history

Sequoyah County Oklahoma

3.1hours

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

66th most of 75 in Oklahoma 53% below the national median

Worst outage on record Jul 12, 2020 14% of customers out · 90% back in 2.8 days
Hours without power, average customer per year 3.1h / yr State average 8.3 h · national median 6.6 h
Major outages a year 1.5 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 2hours Median across major outages, from the peak
Longest single outage 3.7days Jul 11, 2020, over 1% of customers out
Outage hours on storm days 73% Share falling on days with a NOAA storm report here
Worst year 2020 8.0 hours without power, average customer
Electricity customers 33,532 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 Sequoyah'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

2020 was the worst well-recorded year, at 8.0 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Sequoyah, hours without power per customer

SequoyahUS median countyOklahoma average
0 2 4 6 8 10 0.2 ’15 ’16 ’17 1.3 ’18 1.9 ’19 8.0 ’20 2.7 ’21 1.4 ’22 1.7 ’23 3.3 ’24 4.5 ’25 OK 8.3 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
Jul 11, 2020 Thunderstorms 4,597 14% 3.7 d 2.8 d 221k
Aug 16, 2024 Thunderstorms 2,524 8% 41 h 22 h 62k
Jul 14, 2016 Thunderstorms 3,205 10% 29 h 24 h 55k
Jun 6, 2025 Tornadoes 5,822 17% 19 h 12 h 48k
Jun 17, 2017 Thunderstorms 815 2% 2.5 d – 28k
May 3, 2021 Tornadoes 2,731 8% 20 h 26 h 25k
Jun 18, 2023 Thunderstorms 2,763 8% 19 h 9.5 h 22k
Nov 30, 2018 Tornadoes 4,207 13% 22 h 1.5 h 15k
Jul 21, 2022 Thunderstorms 5,075 15% 6.5 h 3.8 h 15k
May 18, 2025 Thunderstorms 1,212 4% 13 h – 11k
Sep 23, 2025 Thunderstorms 5,115 15% 6.0 h 5.2 h 11k
Feb 12, 2020 No storm report 8,520 25% 1.5 h 1.2 h 9.2k

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 +4h 90% by +6h

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

  • Thunderstorms 55%
  • No storm on record 27%
  • Tornadoes 15%
  • Winter storm 1.6%

Who keeps the lights on

Utilities serving Sequoyah

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

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
Oklahoma Gas & Electric Co Investor Owned 237 145 1.71 12.5 716k
City of Sallisaw OK – – – 10.1 50k
Cookson Hills Elec Coop, Inc Cooperative 488 259 2.32 15.7 18k
Ozarks Electric Coop Corp Cooperative 1,043 132 2.71 14.9 12k
Arkansas Valley Elec Coop Corp Cooperative 198 118 2.46 13.8 4.3k

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 Oklahoma

Where it is darkest

Hours / yr64+

All Oklahoma 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 33,532 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 →