Windstorm

Dec 11, 2021. At the peak, 805,460 customers were without power, most of them in Michigan, New York, Tennessee.

Windstorm

Customers out at the peak 805,460 Dec 11, 2021, 2:00 PM

Customer-hours lost 22M Every customer out, times every hour out

Counties with 10%+ out 193 of 524 counties affected

Above 600,000 out nationally 16 hours Dec 11, 2021, 10:00 AM onward

States affected 36 MI · NY · TN · OH · KY

Hardest-hit county 100%out Trigg, KY · 6,398 customers

Hour by hour

The country, in the dark

Customers without power across the US, two days either side. The shaded band is the time the national total stayed above 600,000.

By state

State	Peak out	Share	Counties 10%+
Michigan	386,971	8%	31
New York	259,890	9%	20
Tennessee	216,009	10%	12
Ohio	175,735	5%	11
Kentucky	150,577	13%	24
Indiana	96,976	5%	9
Pennsylvania	89,557	3%	7
Washington	51,207	4%	3
Illinois	48,806	5%	10
Oregon	42,696	4%	2
Georgia	34,338	2%	6
Arkansas	33,661	9%	10
Virginia	32,206	6%	7
Wisconsin	25,631	3%	1
Missouri	25,348	7%	7
West Virginia	24,417	7%	6
Texas	23,076	4%	3
Alabama	18,134	5%	1
North Carolina	17,771	2%	1
Iowa	17,542	10%	7

State peaks add each county's own peak, which may fall at different hours, so they can exceed the true simultaneous total.

By county