LAKE COUNTY, Calif. — In response to a weather forecast that includes high winds midweek, a public safety power shut-off may begin on Wednesday evening, with a small number of Lake County residents to be impacted.

Pacific Gas and Electric said Tuesday that its meteorologists and operations professionals, working with weather agencies, are monitoring a potential dry, northerly windstorm forecast to start Wednesday evening, extending into Thursday morning, which is why the company is considering implementing the public safety power shut-off, or PSPS.

The PSPS, which may start at 6 p.m. Wednesday, would potentially impact 4,200 customers in portions of eight counties and two tribal communities, including seven customers in Napa County and 186 customers in Lake County.

The company’s mapping for the proposed PSPS shows a small number of Lake County residents would be impacted near Indian Valley Reservoir, along with a larger group east of Lower Lake in a remote area along Morgan Valley Road, close to the Colusa, Napa and Yolo county lines.

Because of the wind storm, PG&E said it has begun sending advanced notifications to customers — via text, email and automated phone call — in targeted areas where PG&E may implement the PSPS to reduce the risk of ignitions from energized power lines.

Predictive Services Northern Operations, a federal forecasting agency, is also forecasting high fire potential risk Wednesday into Thursday for northerly wind gusts up to 40 miles per hour.

The Sacramento National Weather Service Office stated northerly winds develop Wednesday into Thursday with gusts of 30 to 35 miles per hour bringing enhanced fire weather concerns for portions of the Sacramento Valley.

The potential shut-off is currently expected to affect approximately 4,200 customers across the following counties and tribal communities:

Butte County: 435 customers, 36 Medical Baseline customers.
Colusa County: 484 customers, 37 Medical Baseline customers.
Glenn County: 349 customers, 18 Medical Baseline customers.
Lake County: 186 customers, 20 Medical Baseline customers.
Napa County: 7 customers, 0 Medical Baseline customers.
Shasta County: 1,558 customers, 131 Medical Baseline customers.
Tehama County: 1,117 customers, 124 Medical Baseline customers.
Yolo County: 10 customers, 0 Medical Baseline customers.
Grindstone Rancheria: 48 customers, 4 Medical Baseline customers.
Pit River tribes: 8 customers, 0 Medical Baseline customers.

Customers can look up their address online to find out if their location is being monitored for the potential safety shut-off at www.pge.com/pspsupdates.