98 



AUSTRALIAN WEATHER. 



and hail storms, and deluges of rain. This type is not peculiar to 

 any season of the year, and the country they affect is usually 

 soutli of Lat. 30. The particular square headed \ depression 

 under discussion occurred in July, 1891. Its effects were wide- 

 spread and its life persistent, and its peculiarity in a more or less 

 distinctive form was maintained during its passage over six degrees 

 of longitude, and its effects most severe in Victoria. 



In Chart 37, July 8th, 1891, the square headed A is shown 

 when over South Australia. The gradients about it excepting 

 those on its eastern side were moderate; winds were from fresh 

 to strong. Following it is a high pressure of decided energy, and 

 preceding it to the east an anticyclone of little or no character ; 

 on the previous day rain fell over greater part of the southern 

 seaboard and in Tasmania. 



TYPES 



or 

 AUSTRALIAN WEATHER 



Square-Headed / depression 

 37 & 3fl 



Chart 38, July 9th, the depression has become more extensive, 

 but has lost energy. The relative powers of the anticyclone 

 remains the same, winds were generally lighter, but the rain 

 covered a much wider area than on the previous day. As this 

 storm moved to the east its characteristic weather was maintained. 



