Heat, humidity and maybe thunderstorms
High-pressure system could make the week uncomfortable around Southern California.
Scorching heat, muggy conditions and the possibility of thunderstorms will return to Southern California, making this week sticky and uncomfortable.
With triple-digit temperatures on the forecast for much of the interior valleys, mountains and deserts, the National Weather Service issued an excessive heat warning Monday. Temperatures could reach 109 degrees in the Antelope Valley and 106 in the valleys.
“High temperatures will [be] quite high ... with some heat risk issues ... Tuesday,” meteorologist Curt Kaplan said in a weather statement. “Overall, expect humid and hot conditions to continue through much of the week. There will be little relief from the heat overnight away from the coast through much of the week.”
An upper-level highpressure system and weak northerly winds can be blamed for the intense heat, the weather service said.
If the heat weren’t enough to activate sweat glands, forecasters says, a monsoonal flow pattern will bring humid conditions and a slight chance of thunderstorms by Tuesday.
Thunderstorms could rock the San Gabriel and Santa Barbara County mountains and bring flash flooding to the areas.
In some areas, the increasing cloud cover will be deceiving because the “increased humidity will still lead to significant discomfort.”
The muggy conditions “will likely cause increased risk of heat-related illness,” the weather service said.
OMAR LOPEZ, 10, plays in a fountain on a sweltering day in Cathedral City, Calif., where the temperature recently reached 118 degrees. The National Weather Service issued an excessive heat warning Monday.