ST. LOUIS (KSDK) - Ameren Missouri expects to have power restored to most storm victims by sunset Friday.
As of 6:45 a.m., 5,578 are still without power.
Ameren Missouri said a few customers in north St. Louis County may be without power into the evening hours while crews replace damaged and broken poles and equipment.
Wednesday night 43,000 customers lost power after an EF2 tornado hit Hazelwood and an EF0 tornado hit The Hill neighborhood in the City of St. Louis.
Straight-line winds and three microbursts are responsible for damage along a 30 mile stretch from Union to Chesterfield.
There are 1,171 workers working to restore power, including 632 Ameren Missouri and Ameren Illinois line employees, 167 line contractors, and 228 forestry crews.
About 900 linemen, field checkers, and vegetation workers are in the hardest hit areas.
Thursday morning Ameren lineman Dave Burns was killed when he came into contact with a live line while working storm cleanup in St. Ann.
Restoration efforts were paused to conduct a safety stand down.
"It is hard to find the words to express one's sorrow and sympathy for our co-worker. When these tragic events take place, we can simply offer our heartfelt thoughts, support and prayers to the family," said President and CEO Warner Baxter.
If you see a downed power line, contact Ameren Missouri at 1-800-552-7583 or 911. You should assume all downed lines are still active.
For additional information on storm safety, visit the 'Outage Center' on Ameren Missouri's website.