Moisture surging into southwest US: Will SoCal have any rain? Southern California will have an increased chance for drenching downpours this week as moisture surges into the southwestern United States, AccuWeather forecasters say. Drought levels across the Four Corners and Southern California range from severe to exceptional, according to the latest data from the U.S. Drought Monitor. There has been little relief in terms of drought across this corridor over the last few months, given the dry conditions in place. #SoCalRainWatch #MonsoonMoistureShift #SouthwestWeatherRisk