A moist southerly flow continues to draw monsoon moisture into the region for a chance of showers and thunderstorms at times this week. Lots of debris clouds from previous days' storms to our east have been producing overcast skies, which limits the surface heating needed for instability and thunderstorm development. Given the fact we started the day off under clear skies today, we were hoping for more activity. However, winds aloft have shifted from the south to southwest, drawing in a drier airmass, which also limited instability with a cap around 26,000 feet preventing much vertical growth of any thunderstorm development. Expect mostly cloudy skies this evening with a few sprinkles or showers, a rumble of thunder is possible. Skies will clear tonight with light winds and lows in the 50s. Looking at variable cloudiness tomorrow with an isolated shower or thunderstorm possible, warmer with highs in the lower to mid 80s. As high pressure expands further west along with low pressure off Baja, we'll draw deeper moisture back into the area Friday through the weekend for an increasing chance of showers and storms. Cooler as highs drop back into the 70s, while lows remain in the 50s. Monsoon moisture will linger through early next week for a continuing chance of afternoon thundershowers, decreasing later in the week as the monsoon flow temporarily shifts east of us.

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