(Radio Iowa) – Thunderstorms have been rolling across Iowa bringing strong winds and heavy rain. Winds were clocked between 60 and 70 miles and hour in Sioux City in western Iowa just before midnight. Numerous power lines were knocked down by falling tree limbs. MidAmerican Energy spokesperson Tina Hoffman says line damage from trees can take longer to repair.

“Our tree crews often have to get in first to clear away that debris before our line crews can get in and get to work with restoring service,” she says.

There were some 13-hundred customers without power as of 10 a-m and Hoffman says they may not have all of the power back on until six this evening.