SOUTHERLY BURSTERS. 49 



and Plate 3 was taken at 5-50 p.m., showing only a trace of -the 

 cloud roll and the disturbed looking upper clouds. Southerly 

 burster arrived at 3'55 p.m., but depth of the current very shallow, 

 for the clouds were still maintaining their course from the south- 

 west. The cumulus observed earlier in the evening, at 6 p.m. 

 remained stationary until 7 '30 p.m., with general outlineunchanged, 

 but with variations in facial aspects meanwhile rising to higher 

 altitudes. At 7'15 p.m. a fine cluster of festoon clouds developed 

 on a prominent outstanding cloud to the west. As the evening 

 became cooler a few light cirro-cumulus clouds came up from the 

 south at 7 '35 p.m., the cumulus of the upper strata first dissolved 

 into cirrus when*the influence of the southerly reached them, 

 and then quickly dispersed before the wind ; lightning visible 

 occasionally to the north until 8*30 p.m. 9 p.m., cirro-cumulus 

 and cumulus extent 4 ; 10 p.m., overcast nimbus, raining lightly 

 and intermittently until 3 a.m. on 16th, when it came down 

 heavily in Sydney ; to south of city it started to rain heavily 

 three quarters of an hour before, and at 2 '45 a.m. a heavy clap of 

 thunder was heard with continued rumblings. The rain con- 

 tinued heavy for another hour, when it tailed off. 



February 16th A heavy shower at 9 a.m., light showers 

 during rest of day. 



The weather chart of the morning of the 16th February shews 

 that in the previous twenty-four hours the whole storm system 

 had moved about five hundred miles to the east (see weather 

 chart No. 2), the front isobars of the anticyclone overlapping the 

 coast line and the low pressure between Tasmania and the Bluff. 

 The isobars are numerically of the same value as on the 15th, but 

 they have spread out and lost energy, weather generally cooler, 

 with rain in Victoria and on western slopes of the main range in 

 New South Wales. 



The second burster to which I shall refer, reached Sydney at 

 2-15 a.m., February 22nd, 1894, weather chart No. 3 and the 

 accompanying diagram of this period show a great deal more 

 D 



