– 0% of Huron out 0 customers out in Michigan

Power outage history

Huron County Michigan

36hours

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

6th most of 83 in Michigan 5.5× the national median

Worst outage on record Sep 23, 2021 100% of customers out · 90% back in 2.8 days

Hours without power, average customer per year 36h / yr State average 13 h · national median 6.6 h

Major outages a year 7.3 Peaks over 10% of customers or 50,000 customers

Typical time to restore 90% 5hours Median across major outages, from the peak

Longest single outage 5.6days Sep 22, 2021, over 1% of customers out

Outage hours on storm days 76% Share falling on days with a NOAA storm report here

Worst year 2021 4.5 days without power, average customer

Electricity customers 10,545 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 Huron'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 4.5 days for the average customer. Hatched years have a thin record and are left out of the averages.

Huron, hours without power per customer

HuronUS median countyMichigan average

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
Sep 22, 2021	Windstorm	10,545	100%	5.6 d	2.8 d	614k
May 4, 2018	Windstorm	10,432	99%	3.3 d	32 h	435k
Aug 3, 2015	Thunderstorms	10,545	100%	2.8 d	2.5 d	360k
Apr 6, 2017	Windstorm	8,455	80%	4.7 d	2.4 d	293k
Dec 11, 2021	Windstorm	5,964	57%	2.5 d	2.1 d	179k
Nov 15, 2020	Windstorm	9,426	89%	37 h	34 h	140k
Jun 26, 2021	Tornadoes	3,686	35%	47 h	37 h	96k
Jun 16, 2022	Thunderstorms	3,178	30%	41 h	28 h	85k
Aug 28, 2021	Thunderstorms	3,379	32%	42 h	7.0 h	83k
Aug 27, 2024	Thunderstorms	5,780	55%	2.2 d	28 h	83k
Sep 7, 2021	Thunderstorms	3,159	30%	29 h	25 h	80k
Aug 2, 2015	Thunderstorms	10,545	100%	12 h	18 h	70k
Feb 24, 2019	Windstorm	3,726	35%	31 h	23 h	70k
Nov 6, 2015	Tornadoes	3,253	31%	31 h	35 h	68k
Nov 17, 2020	No storm report	1,935	18%	2.8 d	2.4 d	62k
Apr 13, 2018	Winter storm	2,630	25%	37 h	6.0 h	44k
Apr 15, 2018	Winter storm	1,730	16%	45 h	41 h	44k
Mar 30, 2017	No storm report	2,065	20%	27 h	27 h	40k
Oct 23, 2020	Thunderstorms	1,392	13%	2.1 d	2.0 d	38k
Aug 28, 2018	Thunderstorms	2,432	23%	24 h	11 h	34k
Dec 23, 2022	Winter storm	2,534	24%	37 h	22 h	34k
Dec 5, 2017	No storm report	2,146	20%	36 h	34 h	32k
Jan 12, 2024	No storm report	1,588	15%	2.7 d	32 h	31k
Nov 1, 2020	No storm report	1,880	18%	30 h	7.0 h	30k
Nov 18, 2015	No storm report	5,173	49%	8.2 h	7.5 h	26k
Jan 11, 2020	No storm report	2,819	27%	26 h	5.8 h	25k
Jan 7, 2019	No storm report	6,037	57%	26 h	6.8 h	24k
Nov 21, 2015	No storm report	2,005	19%	28 h	12 min	20k
Feb 7, 2019	No storm report	1,679	16%	21 h	14 h	20k
Oct 31, 2019	Flooding	3,494	33%	25 h	4.5 h	19k

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.

When it happens

The outage clock

Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.

What was happening

Weather behind the outages

Each outage is matched to NOAA storm reports for Huron from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

Windstorm 51%
No storm on record 24%
Thunderstorms 15%
Winter storm 4.4%
Tornadoes 3.4%
Flooding 1.5%

Who keeps the lights on

Utilities serving Huron

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

Utility	Type	Outage min / yr	Excl. major storms	Outages / yr	Residential ¢/kWh	Customers
DTE Electric Company	Investor Owned	192	151	1.16	20.3	2.1M
Thumb Electric Coop of Mich	MI	549	269	2.02	13.5	127k
City of Sebewaing	MI	–	–	–	–	7.4k

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

Huron (this county) 36 h
Sanilac 30 h
Tuscola 16 h

Across Michigan

Where it is darkest

Hours / yr64+

All Michigan 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 10,545 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 →