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The North American monsoon provides parts of the Southwest 40 to 75% of its annual rainfall, but many cities across the region are pacing 50 to 80% behind average rainfall amounts since June 15 ...
The departure from the normal rainfall varies widely across northern Arizona, with many places reporting between a half-inch to 2 inches more rain than usual. But the rainfall totals in a few ...
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 ...
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.
In general, rainfall amounts are lower on the southern portions of the West coast. [16] The biggest recipients of the precipitation are the coastal ranges such as the Olympic Mountains, [17] the Cascades, [18] and the Sierra Nevada range. [19] Lesser amounts fall upon the Continental Divide.
Gulf surges bring moisture to southern Arizona during the North American Monsoon. Prior to the 1970s, the consensus of meteorologists was the moisture that fueled the central and southern Arizona monsoon resulted from the movement of the Bermuda High to a more south and west position, which in turn transported water vapor to the region from the ...
[citation needed] When active, the monsoon raises humidity levels and can cause heavy localized precipitation, flash floods, hail, destructive winds, and dust storms [17] —which can rise to the level of a haboob in some years. [18] August is the wettest month (0.93 in (24 mm)), while June is the driest (0.02 in (0.51 mm)).
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