Dark mode
Light mode 3:00am 14/06/2026 to 3:00am 16/06/2026
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
4.2 mm
4:15pm 15/06/2026
4:30pm 15/06/2026
1 in 1.0 years
97.93 %
30m
8.0 mm
4:15pm 15/06/2026
4:45pm 15/06/2026
1 in 1.3 years
79.08 %
45m
10.2 mm
4:15pm 15/06/2026
5:00pm 15/06/2026
1 in 1.4 years
70.8 %
60m
12.2 mm
4:15pm 15/06/2026
5:15pm 15/06/2026
1 in 1.6 years
64.5 %
90m
14.2 mm
3:45pm 15/06/2026
5:15pm 15/06/2026
1 in 1.6 years
63.78 %
120m
17.6 mm
10:15pm 15/06/2026
12:15am 16/06/2026
1 in 1.9 years
52.06 %
3h
23.2 mm
9:30pm 15/06/2026
12:30am 16/06/2026
1 in 2.5 years
39.35 %
4h
30.4 mm
8:15pm 15/06/2026
12:45am 16/06/2026
1 in 3.6 years
27.62 %
6h
37.0 mm
8:00pm 15/06/2026
2:00am 16/06/2026
1 in 4.7 years
21.38 %
9h
48.4 mm
3:30pm 15/06/2026
12:30am 16/06/2026
1 in 7.1 years
13.99 %
12h
57.6 mm
2:15pm 15/06/2026
2:15am 16/06/2026
1 in 8.9 years
11.18 %
18h
63.8 mm
8:00am 15/06/2026
2:00am 16/06/2026
1 in 8.1 years
12.32 %
24h
66.0 mm
2:15am 15/06/2026
2:15am 16/06/2026
1 in 6.9 years
14.45 %
30h
66.0 mm
8:15pm 14/06/2026
2:15am 16/06/2026
1 in 5.8 years
17.26 %
36h
66.0 mm
2:15pm 14/06/2026
2:15am 16/06/2026
1 in 4.9 years
20.49 %
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
