A wind advisory has been issued for several Southern California valley and canyon areas as Santa Ana winds and high temperatures return to the region over the next few days.
The National Weather Service said the winds and warm conditions increase the risk of brush fires. Winds gusts could top 35 mph in the Santa Clarita Valley, parts of the Antelope Valley as well as the San Fernando Valley.
Forecasters also predicted a heat wave through Thursday, with temperatures 10 to 20 degrees above normal.
The heat, caused by a low-pressure system, will be most pronounced in inland valley areas, according to the weather service.
"Anyone working outdoors through Thursday should take the necessary precautions to prevent heat-related stress and illness," the weather service said in an advisory.
Here are temperature forecasts:
Coastal areas: 80 TO 90.
Inland Orange County: 86 TO 96.
Coastal valleys: 92 TO 99.
Mountains below 6,000 feet: 88 TO 94.
Mountains above 6,000 feet: 70 TO 80.
Upper deserts: 80 TO 88.
Lower deserts: 91 TO 96.