TYPES. 63 



TYPES OF AUSTRALIAN WEATHER. 

 By HENRY A. HUNT, 



Second Meteorological Assistant, Sydney Observatory. 

 [With Forty Diagrams!] 



IN continuation of the valuable work on Australian Meteorology 

 which the Hon. Ralph Abercromby initiated several years since, 

 by offering a money prize for the best essay on Southerly Bursters; 

 he has recently selected the phases of Australian Weather which 

 are treated in the following twenty studies of " Types of Austra- 

 lian Weather." Many of these appeal- to be peculiar to Australia, 

 and at the same time connected with Equatorial and other weather. 

 That they throw much new light upon the source of the greater 

 part of Australian rain, and show how these rain storms develop 

 out of ordinary weather conditions is certain ; at the same time 

 they form an important contribution to the study of weather in 

 the Southern Hemisphere generally. The work has been done 

 by Mr. H. A. Hunt, at Mr. Abercromby's expense, and Mr. 

 H. 0. Russell, has edited the work. 



GENERAL REMARKS. 



As a general rule, weather is set fine when anticyclones move 

 rapidly, and in a straight line across Australia, i.e., at a rate 

 exceeding five hundred miles per day. And weather is unsettled 

 when they move slowly, and not in a straight line, i.e., in a zigzag 

 line, especially if they show no appreciable forward motion for a 

 day or two. When anticyclones move in low latitudes the con- 

 ditions favour dry weather, in high latitudes, wet weather, 

 especially if they rest for a time south of South Australia. 



All the examples of weather phases which follow have been 

 selected from the Sydney Weather Charts, and illustrate each 

 type. The originals were carefully traced, and then reduced from 

 22" x 17" to the size used in this essay by means of the camera. 



