Utility companies say they are working to restore power to nearly 89,000 customers in south and central Mississippi.

Many utility crews were called in Wednesday night after winds from Isaac got too strong. Crews were back out early Thursday.

Entergy Corp. officials say there were 38,250 customers without power and nearly 700,000 outages at the storm’s peak in Entergy’s four-state area of Texas, Louisiana, Mississippi and Arkansas.

The Electrical Power Association of Mississippi has the most customers without power — some 46,607 customers, mostly in coastal and southwestern counties.

Southern Co.’s Mississippi Power unit., which serves 23 mostly southeastern Mississippi counties, reported about 4,000 of its customers without power as of 9 p.m. Mississippi Power said it was experiencing outages across its service territory and was working to restore power where it can do so safely, especially in flooded areas.

“We are executing on a strategic restoration plan that we mapped out based upon impacted areas,” said Mississippi Power Storm Director Randall Pinkston.