SOUTHERLY BURSTERS. 33 



RECURRENCE AND DURATION OF BURSTERS. 



Bursters are not only uncertain in their duration, but the periods 

 of their recurrence are extremely erratic. Two have been fre- 

 quently known to take place within twenty-four hours ; between 

 two others an interval of a month has been known to elapse. 

 The shortest one recorded extended over a period of three hours ; 

 the longest covered the space of ten days. These figures of course, 

 embrace all the variations of the wind during the continuance of 

 the storm. 



SHORT-LIVED BURSTERS. 



The short lived bursters are generally experienced during a 

 seasonal prevalence of north-east winds ; those of longer duration 

 are usually met with, during a southerly prevalence. 



PARTIAL TO COAST OP NEW SOUTH WALES. 



Not only during the summer, but in all seasons of the year, the 

 southerly has a remarkable partiality for the sea-board of New 

 South Wales. 



OVER STEP ISOBARS. 



So much is this the case in the hot months that the approaching 

 currents from the south have been observed on the coast when the 

 isobars indicated northerly winds. 



BLOW CONTRARY TO ISOBARS. 



Sometimes, too, for several consecutive days, the wind has blown 

 with appreciable velocity from this quarter when the isobaric 

 lines from their relation to the centre of the anticyclone should 

 be producing northerly winds. This latter pecularity is most 

 noticeable in winter months and with necessarily small gradients. 



THE AREA OVER WHICH THE BURSTER EXTENDS. 



The land area over which the burster exercises its influence may 

 be generally described as including all the country east of the 

 mountains in New South Wales, from the extreme south-east 

 point of the colony to a little above Port Macquarie on the north 

 coast. It occasionally oversteps the northern limit, but when it 

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