CHATTANOOGA, TN (WRCB) -- The Tennessee Valley Authority has activated its Transmission Emergency Operations Center to assess the damage and manage the response to today's severe storms.

The transmission system is stable and secure. Continuing storms have resulted in a total of 13 transmission lines and two TVA customer connections points out of service at this time.

Reports from nine distributors of TVA power indicate that the number of customers experiencing outages is now about 32,000 in North Alabama, North Mississippi, Western Kentucky and Southeast and Middle Tennessee.

All three nuclear sites remain safe. The three units at Browns Ferry Nuclear Plant near Athens, Ala., are operating at full power.

Sequoyah Unit 1 in Soddy-Daisy, Tenn., has been shut down since Feb. 27 for a scheduled refueling outage and will not be returning to operation until later this month.

Sequoyah Unit 2 is currently at about 70 percent power due to transmission lines being out of service in the area of the plant. Watts Bar Unit 1 in Spring City, Tenn., is operating at full power.

As storms move through the region, TVA will continue to monitor the situation and respond as required.

TVA crews are assessing the damage as the weather permits and it is safe to do so.