Four northern counties in state of emergency because of ‘conditions of extreme peril’

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Over two dozen killed and thousands of homes destroyed in west from blazes

Thousands of acres have burned in Yucaipa and people have been forced to evacuate

Firefighters race to cut defensive lines against a wildfire in Sonoma County’s famed wine country

Power outages of unprecedented scale to reduce wildfire risks posed by extremely windy, dry weather

Efforts to counter the threat have fuelled much experimentation and investigation

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More than 200,000 people displaced across the state and 8,700 fire crews deployed

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Temporary calm allows assessing of damage after blaze that burnt 109 sq miles around LA

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‘The whole world was on fire around us’ says one local as at least nine killed in blazes

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Some 38,000 remain under evacuation order as authorities search for missing people

Governor asks for federal assistance to prevent an ‘imminent catastrophe’ in US state

Arizona, Cyprus and Siberia all experiencing the effects of the exceptional heatwave

Gusty winds and dry conditions hamper firefighting efforts in the US state

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Almost 200,000 displaced as firefighters battle six large wind-stoked fires and several smaller ones