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Fire Weather

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Weather and Public Safety Power Shutoffs

If weather conditions indicate fire danger is elevated — for example, if there are strong winds, low humidity and the vegetation is dry — we may temporarily shut off power to some customers in areas with a high risk of wildfires. This is called a Public Safety Power Shutoff and is meant to keep communities safe.

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Wildfire Threat Index

The Santa Ana Wildfire Threat Index is a predictive model that helps fire agencies and the public determine the wildfire threat during a high wind event. Users can see this real-time information about weather conditions to help understand the threat of wind-promoted wildfires.

 

 

NO RATING
 

 

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Winds are either not expected, will not contribute to significant fire activity.

 

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No
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No
MARGINAL
 

 

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No

Upon ignition, fires may grow rapidly.

 

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No
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No
MODERATE
 

 

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No

Upon ignition, fires will grow rapidly and will be difficult to control.

 

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No
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HIGH
 

 

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No

Upon ignition, fires will grow very rapidly, will burn intensely, and will be very difficult to control.

 

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No
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No
EXTREME
 

 

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Upon ignition, fires will have extreme growth, will burn very intensely, and will be uncontrollable.

 

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Picture of a Weather Camera

Weather Cameras

More than 130 high-tech cameras have been installed to help monitor high fire risk areas. Up to 160 cameras will be operational by the end of this year, providing about 90 percent coverage of the high fire prone areas. The cameras stream live images on the ALERT Wildfire network.

 


Picture of SCE's Weather Stations

Weather Stations

We have so far installed over 450 weather stations and we plan to add hundreds across our 50,000 square miles of service area by the end of 2020. These weather stations are located in high fire risk areas and are installed on our equipment such as poles. They provide real-time weather data, including wind speed and wind gust, temperature, humidity and solar data every 10 minutes.

 


Red Flag Warnings

Red Flag Warnings are issued by the National Weather Service when there is possible critical weather and dry conditions that could lead to increased wildfire activity. Elevated weather that can lead to a warning include: low relative humidity, strong winds, dry fuels and the possibility of dry lightning strikes.

 


Frequently Asked Questions