Power Out Map
– 0% of Mifflin out 0 customers out in Pennsylvania

Power outage history

Mifflin County Pennsylvania

4.9hours

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

46th most of 67 in Pennsylvania 26% below the national median

Worst outage on record Aug 18, 2019 48% of customers out · 90% back in 14 hours
Hours without power, average customer per year 4.9h / yr State average 6.0 h · national median 6.6 h
Major outages a year 2.8 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 40hours Feb 25, 2019, over 1% of customers out
Outage hours on storm days 47% Share falling on days with a NOAA storm report here
Worst year 2019 12 hours without power, average customer
Electricity customers 26,457 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 Mifflin'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 12 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Mifflin, hours without power per customer

MifflinUS median countyPennsylvania average
0 5 10 15 1.5 ’15 2.6 ’16 7.0 ’17 5.1 ’18 12 ’19 2.8 ’20 5.0 ’21 2.5 ’22 3.4 ’23 3.3 ’24 5.3 ’25 US 6.6 PA 6.0

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
Aug 18, 2019 Thunderstorms 12,698 48% 34 h 14 h 111k
Apr 19, 2019 Tornadoes 4,919 19% 23 h 22 h 49k
Apr 29, 2025 Thunderstorms 2,600 10% 29 h 22 h 47k
Oct 2, 2017 No storm report 19,118 72% 4.2 h 3.8 h 46k
Apr 4, 2018 Windstorm 12,376 47% 12 h 17 h 44k
May 1, 2017 Thunderstorms 6,074 23% 28 h 11 h 28k
Aug 19, 2017 Thunderstorms 9,829 37% 13 h 6.2 h 27k
Feb 25, 2019 Windstorm 1,010 4% 40 h – 25k
Oct 1, 2023 No storm report 2,168 8% 8.0 h 6.5 h 16k
Apr 30, 2021 No storm report 7,545 29% 4.0 h 30 min 13k
Oct 20, 2025 No storm report 5,772 22% 2.2 h 48 min 13k
Sep 8, 2021 Thunderstorms 4,697 18% 8.0 h 7.0 h 13k

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

  • No storm on record 53%
  • Thunderstorms 27%
  • Windstorm 9.6%
  • Tornadoes 6.3%
  • Tropical storm 1.4%
  • Winter storm 1.3%
  • Heat 0.9%
  • Flooding 0.8%

Who keeps the lights on

Utilities serving Mifflin

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

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
FirstEnergy Pennsylvania Electric Co Investor Owned 647 217 2.02 18.8 1.8M
PPL Electric Utilities Corp Investor Owned 198 116 0.97 18.6 1.3M
Valley Rural Electric Coop Inc Cooperative – – – 15.1 18k

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 Pennsylvania

Where it is darkest

Hours / yr64+

All Pennsylvania 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 26,457 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 →