High pressure over the region will strengthen through the weekend, bringing another major heatwave to Southern California with temperatures nearing 10 degrees above average. While we won't be excessively hot in the mtns, it will be very warm out there where a heat advisory is in effect through Monday. We also have lingering monsoon moisture that will bring a few afternoon clouds with an isolated shower or thunderstorm possible at times. Mostly sunny and warmer on Thursday with highs in the mid-80s, east winds 5-10 mph at times. Temperatures will increase Friday through the weekend as daytime highs top out in the upper 80s, while overnight temps also remain mild with lows in the 60s. Monsoon moisture will increase this weekend over Arizona, so we'll have to watch for any potential outflow or easterly wave sneaking into our area, which could trigger isolated convection. Expect more of the same throughout next week!

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