Published: Apr 23, 2011 8:10 PM EDT
Updated: Apr 23, 2011 5:10 PM EDT

ST. LOUIS (AP) - Lambert Airport is expected to reopen Sunday, two days after a strong tornado caused significant damage at the St. Louis airport.
    
St. Louis Mayor Francis Slay says the airport could be operating at 70 percent capacity starting Sunday but will reopen only if power is restored. An Ameren Missouri spokesman says power should be restored later Saturday.
    
The airport director says one American Airlines 757 jet sustained significant damage, and four other American planes had minor damage. Five or six flights had to be diverted away from St. Louis when the storm hit.
    
Officials aren't sure how many travelers are stranded.
    
St. Louis County Executive Charlie Dooley says hundreds of homes in nine communities were damaged. Ameren says power could be out for several days.

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