On October 27, 1952, a depression crossed the Australian Great Dividing Range giving probably more than 5 inches of rain per 24 hours in the Tooma Valley on the north-western side of the Snowy Mountains. Synoptic analysis shows that the cyclone developed within a horizontally quasi-homogenous moist air mass. The surface development coincided with the arrival of a low pressure trough in the upper troposphere. Orographic effects upon the rainfall pattern are discussed. In the appendix; a method is developed of estimating maximum possible rainfall intensities in storms of this type.
Hannay et al. (Tue,) studied this question.