In Phoenix monsoons usually occur during summer season. They happen because of the change in direction of the winds. As monsoons usually occur only in the Western United States it is an occurrence that very few people actually have personal experience with. Some common definitions related to the monsoon storms are listed below :-
1. Haboob :- Haboob is generally formed when the air from the thunderstorm hits the ground and forms a wall of dust in front of the thunderstorm. As the storm moves it goes on collecting everything that comes in its way. They usually survive for 3 hrs and their speed can be upto 50 miles per hour. They occur during the months from June to September.
2. Gustnadoes :- It is a unique combination of dust devil and tornadoes. As it comprises the features of both tornado and dust devil so they are very dangerous. It is compared with tornado because like tornado it starts from ground and raises high up in the sky several feet’s high. Their time period is very short but still they cause huge damage to the life and property.
3. Dust devils :- A dust devil can be compared to the tornado. Like tornado it is caused by spinning motion of the air. They can be as high as 1000 feet and can be as small as 10 feet. They are very common in the valley of Phoenix. While driving these dust devils can be very harmful as they reduce the sight visibility to near zero.
4. Tornado :- Tornadoes are very rarely seen in the phoenix Arizona valley. It is like a funnel which starts from the ground and end up high in the air . They are huge mass of spinning cloud which carries every thing that occurs in its way.
5. Winds :- Winds can be found very commo0nly during the monsoon of Arizona. It is very difficult for the winds of Arizona to form tornadoes but they can become very harm ful when they turn into microbusts. When air of the upper atmosphere comes down and hits the ground it diverges fron its apex point such a divergence of air causes the formation of microbursts. They are very strong winds.
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Monday, February 15, 2010
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