Potential for Small, Targeted PSPS Event in Nine Counties

Forecasted Strong, Offshore Winds and Dry Conditions Mean PG&E May Need to Proactively Turn Off Power for Safety to Approximately 21,000 Customers Monday Night - Seite 2

Due to recent rains, relatively high humidity levels and the lack of any Red Flag Warnings in the Bay Area, PG&E does not anticipate the need for a Public Safety Power Shutoff in any Bay Area counties during this weather event.

Potential for Wind Damage Across PG&E’s Service Area

The offshore weather event is expected to produce damage-producing winds across much of California beginning Sunday and extending into early next week. While there may not be a PSPS in many areas due to recent rainfall in the northern parts of PG&E’s service area, there could be wires down and outages due to flying debris and vegetation.

If you see a downed power line, assume it is energized and extremely dangerous. Do not touch or try to move it—and keep children and animals away. Report downed power lines immediately by calling 911 and by calling PG&E at 1-800-743-5002.

Why PG&E Calls a PSPS Event

Due to forecasted extreme weather conditions, PG&E is considering proactively turning off power for safety. Windy conditions, like those being forecast, increase the potential for damage and hazards to the electric infrastructure, which could cause sparks if lines are energized. These conditions also increase the potential for rapid fire spread.

State officials classify more than half of PG&E’s 70,000-square-mile service area in Northern and Central California as having a high fire threat, given dry grasses and the high volume of dead and dying trees. The state’s high-risk areas have tripled in size in seven years.

No single factor drives a PSPS, as each situation is unique. PG&E carefully reviews a combination of many criteria when determining if power should be turned off for safety. These factors generally include, but are not limited to:

• Low humidity levels, generally 20 percent and below
• Forecasted sustained winds generally above 25 mph and wind gusts in excess of approximately 45 mph, depending on location and site-specific conditions such as temperature, terrain and local climate
• A Red Flag Warning declared by the National Weather Service
• Condition of dry fuel on the ground and live vegetation (moisture content)
• On-the-ground, real-time observations from PG&E’s Wildfire Safety Operations Center and observations from PG&E field crews

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