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Northern Arizona has seen more rain this summer than typical, the weather service says. Here's why and what to expect for the rest of the monsoon. Monsoon 2022: Northern Arizona seeing more ...
Phoenix’s monsoon record is doing more than fueling the heat – it’s a sign of a much more widespread issue developing in the Southwest. Phoenix’s brutal, record-breaking summer just hit ...
Summer monsoon rain over eastern New Mexico. The North American monsoon, variously known as the Southwest monsoon, the Mexican monsoon, the New Mexican monsoon, or the Arizona monsoon [1] is a term for a pattern of pronounced increase in thunderstorms and rainfall over large areas of the southwestern United States and northwestern Mexico.
Gulf moisture is typically constrained to central and southern Arizona by the topography of the Mogollon Rim. The moderate steering flow from the surge pushes the convection off the mountains which brings precipitation to the desert valleys. Precipitation from gulf surge events can produce locally heavy rainfall which result in flash floods.
Over the contiguous United States, total annual precipitation increased at an average rate of 6.1 percent per century since 1900, with the greatest increases within the East North Central climate region (11.6 percent per century) and the South (11.1 percent).
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The clock is ticking on the North American monsoon and the annual shift of winds that transport moisture into the western U.S. Vehicles in the Phoenix metro area navigate a flooded street that ...
The rainfall observed over the region during the period of July 25–30 was over 600 percent of normal totals. The four-day rainfall totals of 14–16 inches (360–410 mm) in some areas were reported to have a less than a 0.1 percent chance of occurring in any given year. [57]