Page:Types of Australian weather.djvu/9

Rh On April 18th and 19th, 1894 (Chart Nos. 4 and 5) occurred one of the finest monsoonal rain storms on record, the area affected being very extensive, embracing the whole of the eastern colonies, Tasmania, and the greater part of South Australia. Many inches—up to five and six—of rain were recorded on the north-east coast of Queensland, and over the eastern half of the rain area the country benefitted to the extent of over two inches generally before the storm was over.



On this Chart No. 4 the monsoonal isobars, after passing the most southern part of the tongue, are shown sweeping round a high pressure of considerable energy, situated over the Great Bight. Following these isobars to the eastward, we find them recurving over another high pressure of greater energy in the Tasman Sea. On Chart No. 5, both anticyclones will be noticed to have worked northward, and while so doing they have lost somewhat in pressure, and the low pressure tongue has extended further south and broadened; at the tip, two cyclonic rain centres will be observed to have formed.

The chart antecedent to 18th April presented the general characteristics of Chart No. 1, except that the &Lambda; antarctic