About 600 Pacific Power customers in Mosier will experience a six-hour electric service outage from 8 a.m. to 2 p.m. on Thursday so crews can replace a storm-damaged pole and key connectors, and tighten the primary wire to keep it stable in high winds.  In addition, new equipment will be installed near Mosier School where a semi-truck recently struck a pole that should allow Pacific Power to speed up restoration of power in future outages by shifting the power supply from other facilities.  Those customers directly affected have been notified individually.   In addition, Wasco County will make reverse 911 calls to the impacted area.   It is possible high winds forecast in the area could cause the work to be delayed for another time.   If that occurs, Pacific Power will again notify customers about the re-scheduled work.