– 0 customers out in the US

July 2019 · 66th largest of 72

Thunderstorms

Jul 21, 2019. At the peak, 653,805 customers were without power, most of them in Michigan, New York, Wisconsin.

Thunderstorms
Customers out at the peak 653,805 Jul 21, 2019, 8:00 PM
Customer-hours lost 18M Every customer out, times every hour out
Counties with 10%+ out 33 of 117 counties affected
Above 600,000 out nationally 6.0 hours Jul 21, 2019, 4:00 PM onward
States affected 27 MI · NY · WI · VA · FL
Hardest-hit county 65%out Sanilac, MI · 8,365 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 200k 400k 600k 800k 1.0M Jul 19Jul 20Jul 21Jul 22Jul 23Jul 24Jul 25 Peak 771k

By state

Where it hit

StatePeak outShareCounties 10%+
Michigan 352,123 13% 6
New York 60,203 3% 0
Wisconsin 57,093 13% 5
Virginia 49,909 10% 5
Florida 34,157 2% 0
New Jersey 31,041 3% 0
Pennsylvania 28,640 2% 0
Maryland 22,749 3% 0
Ohio 16,230 3% 2
Indiana 14,156 5% 1
Missouri 13,999 3% 0
Oklahoma 13,517 15% 3
Tennessee 6,102 4% 0
Georgia 5,931 5% 2
Illinois 3,219 2% 0
California 3,211 26% 1
Alabama 2,706 2% 1
Texas 2,640 2% 1
Kentucky 2,618 11% 3
Louisiana 2,568 1% 0

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