Late morning 31/3/2015, a rain cell developed just to the west of Sydney's CBD and tracked westwards first impacting Strathfield, then Sydney Olympic Park, Auburn, Merrylands and onto Prospect. The rain cell weakened as it tracked further further west.
Looking at news reports, SES personnel were called out to numerous flooding jobs at Dulwich Hill, Strathfield and Concord West, many relating to flooding and leaking roofs. On that note, the roof of the Council building where I work also had leaking issues.
64 mm at Greystanes.
46 mm at Prospect Reservoir.
45 mm at Baulkham Hills.
43 mm at Homebush Bay West.
This is reflective of the very low dark cloud base observed prior to the event. The event was largely over by 12.30 pm.