70 



AUSTRALIAN WEATHER. 



and eastern parts of New South Wales. The winds circulating 

 about the western isobars of this storm are rather stronger than 

 usual in such cases. In the twenty-four hours both anticyclones 

 have lost a considerable portion of their energy, while that of the 

 depression in New Zealand is about the same as on the previous 

 day. 



TYPES 



or 



AUSTRALIAN WEATHER 

 N7 



SEPTfJITBESl Z9 ie 



TYPE IV. DEVELOPMENT OF A CYCLONIC STORM IN HIGH LATITUDES 

 FROM A MONSOONAL DEPRESSION. 



These are somewhat similar to Type 3, but the rainfall is 

 usually not so heavy, and the wind much more violent. 



Chart No. 8 shows the development of one of these cyclones on 

 April 15th, 1889; in this case the inonsoonal depression had 

 extended across Australia into the Australian Bight. The 

 development of one of these storms is heralded by the strong 

 easterly gales on the south-east coast of South Australia and 

 south coast of Victoria. The energy of wind circulation increases 

 over South Australia, and as the whole system moves bodily east- 

 ward from the Australian Bight to the mainland, the circulation is 

 seen to be that of a fully developed cyclone of small area, with a 



