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Light mode11:45am 31/05/2026 to 11:45am 02/06/2026
You can find out more about Design Rainfall and IFD here.
Observations for this analysis :
Maximum observed rainfall by duration, estimated return period and AEP
Duration
Rainfall
Start
End
Years
AEP
15m
33.6 mm
2:00am 02/06/2026
2:15am 02/06/2026
1 in 231.1 years
0.43 %
30m
34.2 mm
2:00am 02/06/2026
2:30am 02/06/2026
1 in 46.6 years
2.14 %
45m
34.4 mm
2:00am 02/06/2026
2:45am 02/06/2026
1 in 21.9 years
4.57 %
60m
34.6 mm
2:00am 02/06/2026
3:00am 02/06/2026
1 in 14.0 years
7.16 %
90m
36.2 mm
2:00am 02/06/2026
3:30am 02/06/2026
1 in 9.3 years
10.78 %
120m
37.8 mm
2:00am 02/06/2026
4:00am 02/06/2026
1 in 7.4 years
13.6 %
3h
39.2 mm
2:00am 02/06/2026
5:00am 02/06/2026
1 in 4.5 years
22.41 %
4h
45.0 mm
2:00am 02/06/2026
6:30am 02/06/2026
1 in 4.1 years
24.62 %
6h
47.2 mm
2:00am 02/06/2026
8:00am 02/06/2026
1 in 2.9 years
34.28 %
9h
61.0 mm
2:00am 02/06/2026
11:00am 02/06/2026
1 in 4.2 years
23.82 %
12h
49.2 mm
7:00pm 01/06/2026
7:00am 02/06/2026
1 in 1.5 years
66.31 %
18h
58.8 mm
3:00pm 01/06/2026
9:00am 02/06/2026
1 in 1.5 years
65.53 %
24h
66.2 mm
11:00am 01/06/2026
11:00am 02/06/2026
1 in 1.5 years
65.35 %
30h
66.2 mm
5:00am 01/06/2026
11:00am 02/06/2026
1 in 1.3 years
74.46 %
36h
66.4 mm
11:00pm 31/05/2026
11:00am 02/06/2026
1 in 1.2 years
81.78 %
Note: A '1 in 1.0 years' estimate means that it is almost certain to occur at least once in a year, and could occur much more than once per year on average. For smaller values like this the Annual Recurrance Interval (ARI) may be of more relevance, but it is complex to calculate for common events.
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