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Weather pattern of the North American monsoon Typical precipitation pattern of the North American monsoon (green arrow). The North American monsoon is a complex weather process that brings moisture from the Gulf of California (and to lesser extent the eastern Pacific and Gulf of Mexico) over northwestern Mexico and southwestern US resulting in summer thunderstorms, especially at higher elevations.
The major monsoon systems of the world consist of the West African, Asian–Australian, the North American, and South American monsoons. The term was first used in English in British India and neighboring countries to refer to the big seasonal winds blowing from the Bay of Bengal and Arabian Sea in the southwest bringing heavy rainfall to the area.
Of the major monsoon systems, only the North American monsoon is expected to have substantial decreases in total precipitation, with the most likely outcome being a 1%-6% reduction in summer rainfall.
The season is dominated by the humid southwest summer monsoon, which slowly sweeps across the country beginning in late May or early June. Monsoon rains begin to recede from North India at the beginning of October. South India typically receives more rainfall. Post-monsoon or autumn season, lasting from October to November. In the northwest of ...
There is a dry season which stretches from December to June, and a rainy season from July to November. [71] Saipan's average annual precipitation is 82.36 inches (2,092 mm), with 67 percent falling during the rainy season. [72] Typhoons frequent the island chain, which can lead to excessive rainfall. [73]
The North American monsoon is marked by a broad area of high pressure, usually parked in the Four Corners region, but the exact position of that high can influence exactly where (and how much ...
The wet season (sometimes called the rainy season or monsoon season) is the time of year when most of a region's average annual rainfall occurs. [1] Generally, the season lasts at least one month. [2] The term green season is also sometimes used as a euphemism by tourist authorities. [3]
Because of the cold California Current from the North Pacific Ocean and the fact that the storms tend to "steer" west, California has only been hit with three tropical storms in recorded history, a storm which came ashore in 1939 and dumped heavy rainfall on the Los Angeles area and interior deserts. The remnants of tropical systems will affect ...