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

Power outage history

Johnson County Missouri

4.3hours

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

68th most of 110 in Missouri 34% below the national median

Worst outage on record Jan 12, 2019 12% of customers out · 90% back in 32 hours
Hours without power, average customer per year 4.3h / yr State average 5.2 h · national median 6.6 h
Major outages a year 3.3 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 45hours Jan 12, 2019, over 1% of customers out
Outage hours on storm days 41% Share falling on days with a NOAA storm report here
Worst year 2019 7.8 hours without power, average customer
Electricity customers 19,137 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 Johnson'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

2019 was the worst well-recorded year, at 7.8 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Johnson, hours without power per customer

JohnsonUS median countyMissouri average
0 2 4 6 8 10 1.4 ’15 1.8 ’16 1.1 ’17 7.8 ’19 4.3 ’20 4.5 ’21 1.9 ’22 4.7 ’23 3.5 ’24 3.5 ’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
Jan 12, 2019 Winter storm 2,387 12% 45 h 32 h 47k
Jul 30, 2023 No storm report 2,876 15% 23 h 20 h 31k
Jun 11, 2021 Thunderstorms 2,924 15% 18 h 16 h 22k
Nov 28, 2019 No storm report 4,188 22% 9.8 h 8.5 h 22k
Aug 17, 2019 Thunderstorms 3,907 20% 11 h 8.5 h 17k
Jun 22, 2019 Thunderstorms 4,684 24% 16 h 7.2 h 16k
Jan 1, 2021 Winter storm 3,667 19% 14 h 8.8 h 16k
Apr 8, 2020 No storm report 5,034 26% 2.8 h 2.2 h 14k
Jun 13, 2024 No storm report 3,258 17% 10 h 7.0 h 13k
Apr 14, 2020 No storm report 1,987 10% 4.8 h 4.8 h 9.4k
Sep 18, 2025 Thunderstorms 2,985 16% 4.5 h 2.5 h 8.1k
Aug 5, 2015 No storm report 1,904 10% 4.2 h 6.0 h 7.6k

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 +8h

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

  • No storm on record 59%
  • Thunderstorms 25%
  • Winter storm 16%

Who keeps the lights on

Utilities serving Johnson

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
Evergy Missouri West Investor Owned 184 104 1.49 12.1 309k
Evergy Metro Investor Owned 178 99 1.50 13.6 276k
Osage Valley Elec Coop Assn Cooperative 379 3 0.69 14.8 17k
West Central Electric Coop Inc Cooperative 109 67 0.95 12.9 16k

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 19,137 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 →