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MINNEAPOLIS - Communities across the Twin Cities are cleaning up trees and branches knocked down by three waves of heavy storms since early Friday.

Minneapolis has announced plans for debris collection beginning July 1 to help people get rid of the downed wood in their yards. St. Paul plans a similar curbside pickup within the next three weeks.

Utility crews continue working to restore power. Gov. Mark Dayton signed an executive order Saturday to ease restrictions on out-of-state utility trucks coming to help out.

With more storms in the forecast, Hennepin County officials warn that many cities in the county have at least a few severe weather warning sirens that are offline due to power issues. They remind residents TV and radio stations and smart phones are all good sources of warning information.

Xcel Energy says that power was impacted to more than 505,000 residents. About111,000 customers remain without power.

Officials said they hope to have power restored to a vast majority of customers by Wednesday.

"More than 1,000 line workers will be in the field this weekend-- including Xcel Energy crews from throughout the Upper Midwest and Colorado, and crews from other utilities that we've called upon for assistance," said Kent Larson, senior vice president of operations innews release. "(Workers) will be working 16-hours shifts until all power is restored."

To report an outage, or to receive outage information or restoration estimates, customers are asked to call Xcel Energy's outage line 1-800-895-1999.