English     español     中文     tiếng việt     Tagalog     한국어     русский язык     Hmoob     عربي     ਪੰਜਾਬੀ     فارسی     日本語     ខ្មែរ     ไทย     Português     हिंदी

Cause of PSPS events

Wildfire conditions across California have intensified due to increased temperatures and dryness. The combination of dry vegetation and high winds can uproot trees, blow branches onto power lines or create sparks if power lines contact one another. These conditions call for Public Safety Power Shutoffs (PSPS). PSPS outages occur across the state to prevent wildfires and keep communities safe.

How a PSPS is determined

We monitor the below weather factors to decide whether a PSPS is needed to keep communities safe. Although you may not live or work in a high fire-threat area or an area experiencing high winds, your power may be shut off if your community relies on a line that runs through an area that does.

humidityLow humidity levels
Low humidity levels generally 30% and below

high windsHigh winds
Forecasted high winds above 20 mph and gusts above 30-40 mph

fuel conditionsFuel conditions
Condition of dry material on the ground and vegetation near lines

warningRed Flag Warning
A Red Flag Warning issued by the National Weather Service

On-the-ground, real-time observations
Our decision-making process is evolving to also account for the presence of trees tall enough to strike power lines when determining if a PSPS is necessary

Weather and outage information for your area

We created tools so you can see if your area may be impacted by a PSPS.

Seven-day PSPS forecast map

Seven-day PSPS forecast map

View a seven-day PSPS forecast by geographic zone. Find out whether your zone is at an elevated, PSPS Watch or PSPS Warning risk.

Current weather map

Current weather map

View current weather, including humidity, precipitation, temperature, wind speeds, wind gusts and Red Flag Warnings.

Outage map

Outage map

Report and view current outages by area and look up address specific outage information.

To report or view current outages, visit our outages map.

High-risk areas

The California Public Utilities Commission (CPUC) has categorized regions according to their wildfire risk. Homes and businesses with power lines in elevated (Tier 2) or extreme (Tier 3) wildfire risk areas have a higher chance of being affected by a PSPS. An entire power line may need to be shut off if fire conditions affect any portion of the line.

CPUC Fire Map Tier 3 fire-threat areas depict areas where there is an extreme risk (including likelihood and potential impacts on people and property) of wildfires.

Tier 2 fire-threat areas depict areas where there is an elevated risk (including likelihood and potential impacts on people and property) of wildfires.

To learn more about high fire-threat areas, visit the CPUC High Fire-Threat District map website.

Related links

Improving PSPS

Find out what we are doing every day to make our system safer and more resilient. Also, learn how we're improving PSPS for our customers and communities.

PSPS support

Find resources to support you during a PSPS, including device charging, bagged ice and Wi-Fi, as well as support for customers with access and functional needs.