Dark mode
Light mode 3:30am 27/05/2026 to 3:30am 29/05/2026
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
0.2 mm
1:45am 28/05/2026
2:00am 28/05/2026
1 in 1 years
100.0 %
30m
18.0 mm
4:45pm 28/05/2026
5:15pm 28/05/2026
1 in 1.4 years
71.65 %
45m
0.4 mm
1:15am 28/05/2026
2:00am 28/05/2026
1 in 1 years
100.0 %
60m
22.6 mm
4:45pm 28/05/2026
5:45pm 28/05/2026
1 in 1.4 years
74.04 %
90m
27.6 mm
3:45pm 28/05/2026
5:15pm 28/05/2026
1 in 1.5 years
68.84 %
120m
32.2 mm
3:45pm 28/05/2026
5:45pm 28/05/2026
1 in 1.6 years
64.47 %
3h
37.8 mm
3:15pm 28/05/2026
6:15pm 28/05/2026
1 in 1.6 years
63.63 %
4h
38.8 mm
2:45pm 28/05/2026
7:15pm 28/05/2026
1 in 1.3 years
75.07 %
6h
38.8 mm
2:45pm 28/05/2026
8:45pm 28/05/2026
1 in 1.2 years
86.47 %
9h
39.0 mm
2:45pm 28/05/2026
11:45pm 28/05/2026
1 in 1.1 years
94.0 %
12h
39.0 mm
2:45pm 28/05/2026
2:45am 29/05/2026
1 in 1.0 years
97.02 %
18h
39.0 mm
9:15am 28/05/2026
3:15am 29/05/2026
1 in 1.0 years
98.81 %
24h
38.8 mm
8:45pm 27/05/2026
8:45pm 28/05/2026
1 in 1.0 years
99.48 %
30h
39.0 mm
8:45pm 27/05/2026
2:45am 29/05/2026
1 in 1.0 years
99.78 %
36h
39.0 mm
3:15pm 27/05/2026
3:15am 29/05/2026
1 in 1.0 years
99.86 %
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.
Install
