A dangerous heat wave is set to bring record-breaking temperatures to parts of the western United States this weekend, prompting authorities to issue warnings for residents to stay indoors.

The extreme weather event is expected to heighten wildfire risks in areas that are already dry or experiencing active burns.

The surge in temperatures is likely to drive up electricity demand as cooling needs peak, potentially straining local power grids.

Natural gas prices may also see upward pressure as utilities ramp up generation to meet the increased load.

The combination of high heat and low humidity creates ideal conditions for rapid fire spread, complicating efforts to contain existing blazes.

This development follows a severe heatwave that recently swept across the central United States, shattering temperature records from the northern plains to the Rocky Mountains.