. >> reporter: pat abercrombie is ready with a go bag. he's even got a red flag flying outside of his home to warn his neighbors fire danger is real. >> we have got a lot of fuel down here on the ground on fitch mountain because we haven't had a real fire for 75 years. >> it's necessary, and it's something that's been a long time waiting. >> reporter: sonoma county supervise says it will cause some problems, but will avoid more problems. >> cal fire had determined a cause for last year's tubs fire, but a recent cal fire report blamed pg & e equipment. pat abercrombie hopes his neighbors on fitch mountain don't lose power. >> power pretty much isolates us. so i'm just hoping that if power is taken down, that it's done judiciously. >> reporter: now pg&e says thousands of customers across the bay will be impacted. i just got the numbers, about 400 in sonoma county, 5,700 in napa county and up in lake county, about 11,000 people impacted. now here's the bad news. pg and e says it could take up to 24 hours or longer to get the power back on be

. >> reporter: pat abercrombie says he's ready for a power outage or a fire evacuation. >> if we have to get out of here, backing out into the road, slowing everybody else down when you need to evacuate is not a good thing. >> reporter: he supports the preemptive efforts of cutting power to avoid devastating fires. >> say downed power line here is going to start a fire. so i'm totally behind it. i believe that it needs to be judicious. >> reporter: pat and his wife evacuated the fitch mountain area last year during the pocket fire. wind is calm on the mountain. earlier he put his red flag out to warn his neighbors of the high fire risk forecasted through monday. if power goes out, some 339 homeowners in the area are on their own. there's no cell service or land lines. pat will have to rely on battery-operated radios. >> if we know the power is being taken down to avoid the opportunity for a fire to catch, i'm going to be paying a lot of attention. >> reporter: pg&e say they are doing everything they can to notify people early, especially those who need power for medical support. >> we