An influx of moisture will move into the Desert Southwest this week, including tropical moisture moving up the west coast of Mexico and California. Moisture levels will rise up to 150-200% of normal, with the most abnormal levels, relative to climatology, focused out west. This increase in moisture will, in turn, increase shower and thunderstorm chances across the region. Better chances arrive region wide Thursday-Friday, with drying conditions expected this weekend. There is still uncertainty with forecast rainfall totals and forecast temperatures.