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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.
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]
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.
The annual North American monsoon, which officially runs from June 15 to Sept. 30, is a notable weather phenomenon for the southwestern United States in any year. But this year, in particular, has ...
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.
During the period from 2008 to 2012, an average of 9,000 wildfires were started by lightning strikes. These fires tended to be much larger in size when compared to those caused by human interaction.
The Gulf and South Atlantic states have a humid subtropical climate with mostly mild winters and hot, humid summers. Most of the Florida peninsula including Tampa and Jacksonville, along with other coastal cities like Houston, New Orleans, Savannah, Charleston and Wilmington all have average summer highs from near 90 to the lower 90s F, and lows generally from 70 to 75 °F (21 to 24 °C ...
Southern California's monsoon season looks like it's extending past September, but experts say it's a mirage. Rain isn't expected in the L.A. area Thursday and Friday.