Monsoon season -- the weather pattern that has been creating inclement conditions in the western U.S. -- is expected to last for another few weeks following a massive dust storm in the Phoenix region. The North American Monsoon is an annual climate phenomenon that occurs in the Southwest U.S. during the warm summer months. In the Southwest, strong heat from the sun causes a significant rise in temperatures during the summer. But, since bodies of water don't rise in temperature as fast as on land, it causes an effect where moist air is drawn toward the hot dry air over land. The monsoon season is a result of the moist air moving onto the hot land, which causes the atmosphere to become unstable. The monsoon is typically found in areas of large, elevated landmasses, like the Southwest, and in
What to know about monsoon season in the US

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