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

Power outage history

Dewey County Oklahoma

20hours

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

3rd most of 75 in Oklahoma 3.0× the national median

Worst outage on record Apr 13, 2018 87% of customers out · 90% back in 4.9 days
Hours without power, average customer per year 20h / yr State average 8.3 h · national median 6.6 h
Major outages a year 12.6 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 6.8days Apr 12, 2018, over 1% of customers out
Outage hours on storm days 67% Share falling on days with a NOAA storm report here
Worst year 2018 3.1 days without power, average customer
Electricity customers 2,623 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 Dewey'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

2018 was the worst well-recorded year, at 3.1 days for the average customer. Hatched years have a thin record and are left out of the averages.

Dewey, hours without power per customer

DeweyUS median countyOklahoma average
0 10 20 30 40 50 5.8 ’15 ’16 18 ’17 73 ’18 13 ’19 19 ’20 5.8 ’21 8.9 ’22 11 ’23 7.3 ’24 18 ’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
Apr 12, 2018 Wildfire 2,281 87% 6.8 d 4.9 d 134k
Jan 14, 2017 Ice storm 1,764 67% 3.0 d 31 h 36k
Oct 28, 2020 Ice storm 1,206 46% 2.4 d 28 h 30k
Jun 25, 2018 Thunderstorms 1,872 71% 35 h 20 h 22k
Aug 24, 2025 Thunderstorms 899 34% 2.1 d 18 h 14k
May 19, 2022 Thunderstorms 1,957 75% 9.8 h 5.8 h 10.0k
Dec 27, 2015 Winter storm 346 13% 28 h 28 h 9.8k
Nov 11, 2019 No storm report 1,395 53% 14 h 5.0 h 6.9k
May 29, 2018 Thunderstorms 1,265 48% 13 h 5.5 h 6.9k
Mar 14, 2025 Windstorm 954 36% 28 h 7.2 h 5.6k
Aug 12, 2019 Thunderstorms 1,327 51% 13 h 12 h 5.6k
May 30, 2018 Thunderstorms 813 31% 12 h 3.8 h 4.0k

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 +14h

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

  • Wildfire 34%
  • No storm on record 33%
  • Thunderstorms 20%
  • Ice storm 7.8%
  • Windstorm 3.4%
  • Winter storm 0.6%

Who keeps the lights on

Utilities serving Dewey

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
Public Service Co of Oklahoma Investor Owned 200 98 1.48 14.2 506k
Northfork Electric Coop, Inc OK 131 131 – 13.7 64k
CKenergy Electric Cooperative Cooperative 498 498 4.68 13.8 23k
Cimarron Electric Coop Cooperative 70 43 0.84 12.5 16k
Northwestern Electric Coop Inc Cooperative – – – 16.8 9.6k

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 2,623 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 →