The Return of the Southwest Monsoon
Over the next several weeks, a monsoonal pattern will occur over the Southwestern United States and Mexico. Rounds of rain and storms will occur during this time.
A combination of a strong ridge of high pressure over the west coast, an upper level low over the Rockies, and plume of tropical moisture moving up through central Mexico will help provide a perfect set-up for monsoonal flow. The main hazards will be lightning, locally heavy rain, and gusty winds mainly during the afternoon into the early overnight. In addition, dust storms and haboobs can’t be ruled out with strong winds that could form along outflows of thunderstorms.
Good news is that this rainfall will provide some relief for the drought and hot temperatures across the region.