Looking at a more active day out there today with isolated convection firing up over much of the mountain areas. We are currently dealing with moisture mostly above 500mb, so these are high-based storms with not a ton of widespread rainfall. As deeper moisture arrives Monday into Tuesday down to 600 & even 700mb, isolated flash flooding with heavier rainfall rates will become a bigger concern. Highs will top out in the mid-80s again today with south to southwest winds 10-20 mph at times. High pressure over the Four Corners will draw additional moisture into Southern California throughout much of this week, bringing a good chance for afternoon showers and thunderstorms at times with even some nocturnal storms possible early in the week. Storms will vary in coverage and intensity from day to day, possibly even spilling west of the mountains over some of our valley areas. Thunderstorms are always capable of producing heavy rain, gusty winds, dangerous lightning, and small hail; always head indoors when thunder roars. If you can hear thunder, you are close enough to be struck. Temperatures will also cool throughout the week as highs drop from the lower 80s to the 70s, slightly below average for a change, with overnight lows generally in the 50s. Low pressure approaching the West Coast later in the week should temporarily push monsoon moisture east of us by the weekend.

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