CA, NV, AZ Enduring Another Heatwave W. Temps Up To 118F; NWS Issues Heat Warning For San Francisco(!)

Searing temperatures are roasting the US west once again this week, as a brutal heatwave could bring some of the highest temperatures of the summer so far. Excessive heat warnings were in effect across parts of southern California, Arizona and Nevada, affecting tens of millions of people. The harsh weather was predicted to peak beginning on Wednesday and lasting into the weekend.

The city of Los Angeles could see temperatures approaching 100F (37.7C), with locations further inland hitting nearly 110F (43.3C) or higher, according to a forecast from the National Weather Service (NWS). “Dangerously hot conditions with peak temperatures of 95 to 110 possible, hottest Thursday and Friday. Warm overnight low temperatures will bring little relief from the heat,” the NWS warned in an advisory.

Desert cities such as Palm Springs were expected to see multiple days over 110F, while highs in Death Valley national park, which is experiencing its hottest summer on record, were expected to soar up to 118F (47.7C) on Friday. In Santa Barbara county, officials issued a health alert due to spiking inland temperatures.

Unusually high temperatures were also predicted across the Bay Area and Central valley. Even normally temperate San Francisco was predicted to be at least 13 degrees above average. It was so out of character for San Francisco that the National Weather Service issued a heat advisory.

EDIT

https://www.theguardian.com/us-news/article/2024/sep/04/us-west-heatwave-summer