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
8.0 mm
10:00pm 27/05/2026
10:15pm 27/05/2026
1 in 1.0 years
98.93 %
30m
14.0 mm
10:00pm 27/05/2026
10:30pm 27/05/2026
1 in 1.1 years
94.28 %
45m
18.0 mm
10:00pm 27/05/2026
10:45pm 27/05/2026
1 in 1.1 years
89.34 %
60m
20.0 mm
10:00pm 27/05/2026
11:00pm 27/05/2026
1 in 1.1 years
89.32 %
90m
20.0 mm
9:30pm 27/05/2026
11:00pm 27/05/2026
1 in 1.0 years
95.7 %
120m
21.0 mm
9:00pm 27/05/2026
11:00pm 27/05/2026
1 in 1.0 years
96.98 %
3h
22.0 mm
9:00pm 27/05/2026
12:00am 28/05/2026
1 in 1.0 years
98.52 %
4h
23.0 mm
8:00pm 27/05/2026
12:30am 28/05/2026
1 in 1.0 years
99.29 %
6h
32.0 mm
10:00pm 27/05/2026
4:00am 28/05/2026
1 in 1.0 years
96.53 %
9h
33.0 mm
7:00pm 27/05/2026
4:00am 28/05/2026
1 in 1.0 years
98.52 %
12h
34.0 mm
4:00pm 27/05/2026
4:00am 28/05/2026
1 in 1.0 years
99.06 %
18h
35.0 mm
10:00am 27/05/2026
4:00am 28/05/2026
1 in 1.0 years
99.78 %
24h
45.0 mm
9:15pm 27/05/2026
9:15pm 28/05/2026
1 in 1.0 years
98.81 %
30h
63.0 mm
9:30pm 27/05/2026
3:30am 29/05/2026
1 in 1.1 years
93.91 %
36h
65.0 mm
3:30pm 27/05/2026
3:30am 29/05/2026
1 in 1.1 years
95.09 %
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
