California sizzled in a record heatwave this week. We mapped where it was hottest

As one of the most brutal September heat events dragged on, the red numbers climbed ever higher

California this week endured one of its longest and most intense September heatwaves, smashing temperature records up and down the state.

Since 1 September, more than a dozen cities across the state set new all-time highs, with numerous others tying previous records or setting new monthly records. Thermometers in Sacramento, California, recorded a stunning 116F (47C) on Tuesday.