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Hail Alley In Argentina Lives Up To It's Name  
User currently offlineDerico From Argentina, joined Dec 1999, 4316 posts, RR: 11
Posted (8 years 1 week 6 days 21 hours ago) and read 4195 times:

The area in central-western Argentina (provinces of San Luis, most of Cordoba, western La Pampa, Mendoza), is called 'Hail Alley' by meteorologists, because it is usually in this area where the world's largest hailstones fall.

These hailstorms are the most violent in the world. The reason is the topography: the Andes Mountains are generally at their highest peaks in central-west Argentina, which cool pacific or antarctic air straight upwards.

Moist, warm air flowing down from Brazil, Paraguay, and Bolivia late in the spring (november, etc), towards Argentina rises, and meets these cool winds, which beging freezing the water dropplets in the warm tropical air. Because of the vertical height of the Andes, these winds allow the frozen ice to linger a lot longer than they would otherwise do, which can create trully massive hail stones.



A few tornadoes also occured in Cordoba, Santa Fe, Chaco, and Santiago del Estero Chaco provinces where a seven year old girl was killed.

http://www.lanacion.com.ar/anexos/imagen/06/602127.JPG
Damage in the town of Coronel Moldes


Highway damage in Santiago del Estero province

Hot air from tropical South America meets cool pacific or cold antarctic air, and almost always in Argentina.


My internet was not shut down, the internet has shut me down
2 replies: All unread, jump to last
 
User currently offlineBoeing4ever From , joined Dec 1969, posts, RR:
Reply 1, posted (8 years 1 week 6 days 21 hours ago) and read 4184 times:

Wow. Whenever I thought of violent thunderstorm activety on a regular basis, I always though of tornado alley in the central US. Or hurricane/typhoon/cyclonic storm prone regions. This is pretty fascinating stuff.

 airplane B4e-Forever New Frontiers airplane 


User currently offlineDAL767400ER From , joined Dec 1969, posts, RR:
Reply 2, posted (8 years 1 week 6 days 17 hours ago) and read 4165 times:

WTF, that's an actual hail stone  Wow! ? Damn, and here in Europe we cry when hail stones have the size of tennis balls.

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