Dark mode
Light mode 4:45am 19/06/2026 to 4:45am 21/06/2026
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
4.4 mm
2:45am 21/06/2026
3:00am 21/06/2026
1 in 1.1 years
90.29 %
30m
6.4 mm
2:45am 21/06/2026
3:15am 21/06/2026
1 in 1.2 years
86.47 %
45m
8.2 mm
2:15am 21/06/2026
3:00am 21/06/2026
1 in 1.3 years
77.69 %
60m
10.2 mm
2:00am 21/06/2026
3:00am 21/06/2026
1 in 1.5 years
68.25 %
90m
13.0 mm
1:45am 21/06/2026
3:15am 21/06/2026
1 in 1.6 years
60.78 %
120m
16.6 mm
1:15am 21/06/2026
3:15am 21/06/2026
1 in 2.1 years
47.3 %
3h
18.2 mm
1:15am 21/06/2026
4:15am 21/06/2026
1 in 1.9 years
53.71 %
4h
19.0 mm
12:00am 21/06/2026
4:30am 21/06/2026
1 in 1.5 years
66.3 %
6h
19.0 mm
10:30pm 20/06/2026
4:30am 21/06/2026
1 in 1.3 years
76.52 %
9h
20.2 mm
7:30pm 20/06/2026
4:30am 21/06/2026
1 in 1.2 years
86.47 %
12h
20.2 mm
4:30pm 20/06/2026
4:30am 21/06/2026
1 in 1.1 years
91.98 %
18h
20.6 mm
10:30am 20/06/2026
4:30am 21/06/2026
1 in 1.0 years
96.69 %
24h
20.6 mm
4:30am 20/06/2026
4:30am 21/06/2026
1 in 1.0 years
98.45 %
30h
22.4 mm
10:30pm 19/06/2026
4:30am 21/06/2026
1 in 1.0 years
98.36 %
36h
22.4 mm
4:30pm 19/06/2026
4:30am 21/06/2026
1 in 1.0 years
98.78 %
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.
Install
