1. 
   Willy-Willy
   Willy-willy is a type of harmless Australian tornado. The term is sometimes used to refer to a whirlwind or dust devil. Numerous other spellings include willi willi and willy willie. It may also be used to refer to a hurricane. ...
   Found op http://en.wikipedia.org/wiki/Willy-Willy
   
   
2. 
   Willy-willy
   A tropical cyclone (with winds 33 knots or greater) in Australia, especially in the southwest. (Glossary of Weather and Climate) More recent common usage is for dust-devils.
   Found op http://www.ggweather.com/winds.html
   
   

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