Power Out Map
– 0% of Lyon out 0 customers out in Kansas

Power outage history

Lyon County Kansas

4.3hours

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

30th most of 81 in Kansas 35% below the national median

Worst outage on record Dec 15, 2021 33% of customers out · 90% back in 19 hours
Hours without power, average customer per year 4.3h / yr State average 3.0 h · national median 6.6 h
Major outages a year 3.5 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 28hours Aug 30, 2019, over 1% of customers out
Outage hours on storm days 48% Share falling on days with a NOAA storm report here
Worst year 2021 8.7 hours without power, average customer
Electricity customers 9,811 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 Lyon'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 8.7 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Lyon, hours without power per customer

LyonUS median countyKansas average
0 2 4 6 8 10 2.0 ’15 2.2 ’16 1.9 ’17 2.4 ’18 5.9 ’19 1.7 ’20 8.7 ’21 3.2 ’22 3.5 ’23 5.5 ’24 3.5 ’25 US 6.6 KS 3.0

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
Dec 15, 2021 Thunderstorms 3,256 33% 26 h 19 h 33k
Aug 30, 2019 Thunderstorms 3,534 36% 28 h 21 h 31k
May 19, 2024 Thunderstorms 3,596 37% 23 h 4.8 h 14k
Mar 14, 2025 No storm report 3,353 34% 6.0 h 4.8 h 12k
Jan 9, 2024 Winter storm 2,367 24% 9.8 h 5.2 h 8.2k
Mar 6, 2022 No storm report 2,343 24% 7.5 h 1.8 h 8.0k
Sep 4, 2021 No storm report 1,916 20% 2.8 h 2.2 h 5.3k
Dec 7, 2023 No storm report 2,741 28% 2.0 h 2.0 h 5.1k
May 18, 2019 Thunderstorms 1,336 14% 5.8 h 3.2 h 5.0k
Sep 25, 2021 No storm report 1,717 18% 4.0 h 4.0 h 4.8k
Jun 10, 2023 No storm report 1,544 16% 3.5 h 2.0 h 4.0k
Apr 7, 2021 No storm report 1,715 17% 2.2 h 2.2 h 3.9k

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 +2h 90% by +4h

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

  • No storm on record 52%
  • Thunderstorms 41%
  • Winter storm 3.7%
  • Flooding 2.5%

Who keeps the lights on

Utilities serving Lyon

As each utility reports to the Energy Information Administration for its whole Kansas 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 Kansas Central, Inc Investor Owned 126 80 1.17 14.6 344k
Flint Hills Rural E C A, Inc KS 373 246 2.77 15.8 56k

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 Kansas

Where it is darkest

Hours / yr64+

All Kansas 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 9,811 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 →