LOS ANGELES >> Forecasters say a new heat wave is setting in across the interior of Southern California, and the southern Sierra Nevada is facing a period of elevated fire danger.
The National Weather Service says the heat is coming from high pressure building over the desert Southwest that will expand westward.
Increasing temperature will be accompanied by elevated moisture moving up from Mexico that could add humidity to the heat wave.
In the Sierra, fire danger warnings are posted from Sequoia to Yosemite, while flood warnings due to snowmelt are posted in northern Mono County in California and southern Lyon County in Nevada.
To the south, there’s a red flag warning for Santa Barbara County’s mountains and south coast due to predicted “sundowner” winds starting Thursday evening.