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.

Californians headed to campgrounds, beaches and restaurants over the long holiday weekend as the state prepared to shed some of its coronavirus rules.

Southern California beaches were busy with families barbecuing and children playing in the sand and surf. Business owners said they were scrambling to hire workers to keep up with the stream of customers eager to get out since virus cases have fallen and vaccinations have risen.

“It feels very, very close to normal,” Bob Alfera, a resident of seaside Santa Monica, told KCBS-TV.

Things look bad with California’s ever-sooner wildfire season seemingly approaching and what’s shaping up to be a severe drought across the Western U.S.

The plague of wildfires in the past few years in California have made things tough for residents and businesses, and in the last few years, larger and more frequent wildfires have been particularly bad for utilities.

One business segment that’s getting some bad breaks are contractors that work for utilities or that work in wildfire-prone areas.

California Gov. Gavin Newsom this week expanded a drought emergency to a large swath of the nation’s most populous state while seeking more than $6 billion in multiyear water spending as one of the warmest, driest springs on record threatens another severe wildfire season across the American West.

The Democratic governor said he is acting amid “acute water supply shortages” in northern and central parts of California as he called again for voluntary conservation. Yet the state is in relatively better shape than it was when the last five-year drought ended in 2017, he said, as good habits have led to a 16% reduction in water usage.

California officials on Thursday voted to toughen oversight of Pacific Gas & Electric, saying the utility had largely failed to perform required tree-trimming work near power lines in areas with the highest risk of wildfires.

The unanimous vote by the California Public Utilities Commission comes as the fire-prone state has stepped up scrutiny of utility efforts to mitigate wildfire risk. Climate change is fueling increasingly frequent and intense blazes in the state that are often ignited by power infrastructure.