A heatwave already punishing parts of the U.S. Southwest on Monday was expected to move into California this week, prompting the forecasters to warn of health and fire dangers.
A high-pressure ridge that built over southwestern deserts over the past few days is responsible for the unusually blistering heat this early in the year, National Weather Service meteorologist Karleisa Rogacheski said.
“Today last day of seasonable weather in California,” Rogacheski said.
California saw balmy weather on Monday, with temperatures in the upper 80s and low 90s Fahrenheit (30-35°C), but forecasts called for warming on Tuesday, spiking into the triple digits by Thursday and lasting several days.