TYPES OF AUSTRALIAN WEATHER. 539 
TYPES 
oF 
AUSTRALIAN WEATHER 
No28 
. MAY 29. 1892 
NR % 
strength covering the southern colonies of South Australia and 
Victoria, and the greater part of New South Wales; its isobars 
are unusually symmetrical and its rain influence the most exten- 
sive we have on record. During the 29th and 30th rain continued 
to fall over considerable areas, although on the 30th the depression 
filled up and the storm was displaced by the high pressure coming 
on from the west. 
TYPE XIII.—WESTERLY WINDS. 
The Winter anticyclone (See Chart 36) is much nore extensive 
than the Summer one, and its grades are steeper and circulation 
stronger, while its latitude is further north, often up to 30° 8.; 
hence the circulation on its southern side, unlike the Summer one, 
—— the mainland of Australia and gives us our westerly winds. 
-_ Just as the trade wind intensifies its northern circulation by 
adding force thereto, so the brave west winds of the southern 
Ocean follow the general move of the weather systems northwards, 
and thus add force to the westerly circulation of the anticyclone, 
7 Ag dimensions increase the size of the 4 depression, 
that it no longer has the sharply defined change from 
