– 0 customers out in the US

August 2021 · 17th largest of 72

Hurricane Ida

At the peak, 1,234,648 customers were without power, most of them in Louisiana, Pennsylvania, Mississippi.

Hurricane Ida
Customers out at the peak 1,234,648 Sep 2, 2021, 1:00 AM
Customer-hours lost 220M Every customer out, times every hour out
Counties with 10%+ out 235 of 686 counties affected
Above 600,000 out nationally 7.0 days Aug 29, 2021, 4:00 PM onward
States affected 48 LA · PA · MS · NJ · CA
Hardest-hit county 100%out Livingston, LA · 56,101 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.

0 500k 1.0M 1.5M Aug 27Aug 29Aug 31Sep 2Sep 4Sep 6Sep 8 Peak 1.2M

By state

Where it hit

StatePeak outShareCounties 10%+
Louisiana 1,083,396 51% 30
Pennsylvania 220,950 5% 8
Mississippi 184,956 17% 35
New Jersey 135,607 4% 4
California 94,480 2% 6
Virginia 89,171 7% 18
New York 88,455 3% 0
Texas 71,350 4% 18
Michigan 53,959 6% 13
North Carolina 49,448 5% 8
Georgia 46,498 4% 13
Florida 45,957 2% 5
Alabama 39,198 4% 7
Connecticut 37,973 4% 0
West Virginia 37,102 8% 13
Tennessee 33,758 4% 4
Ohio 29,998 4% 1
Missouri 28,184 4% 6
Indiana 26,826 3% 3
Kansas 21,666 3% 4

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

By county

The hardest hit