More than 1,200 Pacific Gas and Electric customers were without power Thursday morning in the Pine Mountain Lake area of Groveland, according to the utility.

By 11 a.m., the utility the number of customers without power to 671.

The outages were reported at 9:15 a.m. today. The utility said before 11 a.m. 1,256 customers were impacted. A PG&E assessment crew was en route to try to determine the cause. The utility estimated power would be restored by 12:45 p.m.

A PG&E spokesperson was not immediately available to explain further what happened. A map of the outage showed an area focused on the north side of Pine Mountain Lake and along Ferretti Road.

Shortly after 10:20 a.m., Mike McEvoy, a Pine Mountain Lake Association member, posted to a Facebook group, “At approximately 9:30 am this morning, PML experienced power outages in Units 3, 6, 7 and 12. The cause is unknown at this time. Four PG&E trucks came through the Main Gate this morning to respond to the outage.”

At 10:30 a.m., there were reports the outage was affecting areas in Pine Mountain Lake in Units 1, 3, 6, 7, and 12, Joe Powell, general manager for Pine Mountain Lake Association, told The Union Democrat.

The cause of the outage was not clear as of Thursday morning. A red flag warning for gusting winds and heightened fire conditions was in effect for most of the Mother Lode and the rest of the Central Sierra. Maximum wind gusts since midnight in the Pine Mine Lake area approached 11 miles per hour, according to the National Weather Service.

At 10:40 a.m., an alert from PG&E stated crew members were on-site working to investigate and restore power.

Contact Guy McCarthy at or 588-4585. Follow him on Twitter at @GuyMcCarthy.