Why Can Power Go Out During Wildfire Season?

Wildfire season doesn’t just bring smoke and heat, it can also bring power outages — sometimes called blackouts. In some cases, an outage is an intentional, planned safety measure called a public safety power shutoff (PSPS). Utilities use PSPS events as a last-resort measure to reduce the risk that electrical equipment could spark a new fire during extreme fire weather, such as very dry conditions and strong winds.

Why do utilities shut off power?

Before considering a PSPS, utilities take many steps to reduce wildfire risk, including:

• Clearing vegetation away from power lines and equipment.
• Strengthening and upgrading electrical equipment.
• Increasing inspections and maintenance during high-risk seasons.

Even with these preventive measures, high winds, low humidity and dry vegetation can create dangerous conditions. In rare situations, shutting off power helps reduce the chance of equipment-related ignitions.

How much notice will I get?

When possible, utilities try to provide a 24 to 48-hour notice before a planned shutoff. However, weather and fire conditions can change quickly, and the notice period may be shorter, or a shutoff may be needed with little notice in an emergency.

Tip: Make sure your utility has your current phone number and email address, and review your alert settings each season.

How long do public safety power shutoffs last?

Outages may last from several hours to many days. Power is restored only after conditions improve, and crews can safely patrol lines, complete inspections and make any necessary repairs.

Restoration can take longer when:

• Wind and smoke limit visibility or access.
• Roads are blocked by fire or debris.
• Evacuation orders restrict where crews can work safely.

Can blackouts be prevented?

Weather is a leading cause of outages, and extreme wildfire conditions aren’t always avoidable. Utilities work year-round to reduce risk, but during severe fire weather, a PSPS may be the safest option.

Preparation makes the difference

Wildfire-related outages can be disruptive, but they are intended to protect the community during extreme conditions. Knowing what to expect  and preparing ahead of time can help protect you, your family and your home during wildfire season.

What wildfire alerts and warnings mean

Understanding alerts can help you know when to prepare and when conditions may become dangerous.

Fire weather alerts

• Red flag warning: Critical fire weather conditions are occurring or expected soon (often within 24 hours).
• Fire weather watch: Conditions are dry and favorable for critical fire weather and could become dangerous.

National wildfire risk levels

• Low (Green): Fire starts are unlikely.
• Moderate (Blue): Fires may occur.
• High (Yellow): Fires are likely.
• Very High (Orange): Fires start easily and spread quickly, and are difficult to control
• Extreme (Red): Fires start and spread rapidly. No outdoor burning should take place.