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A monsoon (/ m ɒ n ˈ s uː n /) is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation [1] but is now used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal oscillation of the Intertropical Convergence Zone (ITCZ) between its limits to the north and south of the equator.
An inactive phase or "breaks" is when the monsoon trough diminishes and withdraws to the north of Australia, although light winds, sporadic showers and thunderstorm activity may occur. Later than normal monsoon arrivals, and drier ones, are generally associated with El Niño conditions in the Pacific, while La Niña is mostly associated with an ...
August position of the ITCZ and monsoon trough in the Pacific Ocean, depicted by area of convergent streamlines in the northern Pacific. The monsoon trough is a portion of the Intertropical Convergence Zone in the Western Pacific, [1] [2] as depicted by a line on a weather map showing the locations of minimum sea level pressure, [1] and as such, is a convergence zone between the wind patterns ...
Monsoon is a season when summer rain is more prevalent, usually from mid-June to September. Here's what causes the drenching storms.
Some areas with pronounced rainy seasons will see a break in rainfall mid-season, when the Intertropical Convergence Zone or monsoon trough moves to higher latitudes in the middle of the warm season. [7] When the wet season occurs during a warm season, or summer, precipitation falls mainly during the late afternoon and early evening.
The Asian monsoon and Indian Ocean monsoon are known for bringing intense rainfall after an extended dry period. Goa, a state in southwestern India, is generally rainless from January through March.
A strong relationship between the leading mode of intraseasonal variability of the North American Monsoon System, the MJO and the points of origin of tropical cyclones is also present. A period of warming sea surface temperatures is found five to ten days prior to a strengthening of MJO-related precipitation across southern Asia. A break in the ...
Daytime desert heat is blasting much of the U.S. Southwest, but some monsoon rain spelled brief weekend relief for the city of Phoenix. The National Weather Service in Phoenix reported the low ...