Power Out Map
– 0% of St. Clair out 0 customers out in Missouri

Power outage history

St. Clair County Missouri

10hours

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

16th most of 110 in Missouri 1.6× the national median

Worst outage on record May 19, 2025 70% of customers out · 90% back in 3.3 days
Hours without power, average customer per year 10h / yr State average 5.2 h · national median 6.6 h
Major outages a year 5.3 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 4.3days May 19, 2025, over 1% of customers out
Outage hours on storm days 63% Share falling on days with a NOAA storm report here
Worst year 2025 32 hours without power, average customer
Electricity customers 3,837 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 St. Clair'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

2025 was the worst well-recorded year, at 32 hours for the average customer. Hatched years have a thin record and are left out of the averages.

St. Clair, hours without power per customer

St. ClairUS median countyMissouri average
0 10 20 30 40 ’15 1.6 ’16 ’17 ’18 1.6 ’19 3.5 ’20 4.0 ’21 4.2 ’22 16 ’23 12 ’24 32 ’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
May 19, 2025 Thunderstorms 2,667 70% 4.3 d 3.3 d 93k
Jul 30, 2023 Thunderstorms 2,102 55% 23 h 20 h 29k
May 7, 2024 Thunderstorms 873 23% 17 h 11 h 8.6k
Jun 9, 2024 Thunderstorms 898 23% 17 h 9.2 h 8.5k
Sep 23, 2023 Thunderstorms 997 26% 17 h 12 h 6.8k
Dec 14, 2024 No storm report 270 7% 41 h 40 h 6.0k
Sep 15, 2018 No storm report 736 19% 6.0 h 8.2 h 4.4k
Jul 19, 2018 Thunderstorms 264 7% 26 h 21 h 3.5k
Jun 26, 2024 No storm report 1,285 33% 7.2 h 6.2 h 3.5k
Jun 15, 2016 Thunderstorms 853 22% 13 h 14 h 3.0k
May 4, 2020 Thunderstorms 906 24% 3.0 h 30 min 2.6k
Jul 15, 2024 No storm report 370 10% 6.8 h 15 h 2.5k

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 +12h

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

  • Thunderstorms 60%
  • No storm on record 37%
  • Winter storm 2.1%
  • Flooding 0.8%

Who keeps the lights on

Utilities serving St. Clair

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
Empire District Electric Co Investor Owned 167 110 1.10 14.8 144k
Sac-Osage Electric Coop Inc MO 208 205 – 12.9 133k
Southwest Electric Coop, Inc Cooperative 356 214 1.00 12.3 42k
Osage Valley Elec Coop Assn Cooperative 379 3 0.69 14.8 17k

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 3,837 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 →