Dark mode
Light mode 2:15pm 17/05/2026 to 2:15pm 19/05/2026
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
5.0 mm
11:45am 18/05/2026
12:00pm 18/05/2026
1 in 1 years
100.0 %
30m
10.0 mm
11:45am 18/05/2026
12:15pm 18/05/2026
1 in 1.0 years
99.67 %
45m
13.0 mm
11:45am 18/05/2026
12:30pm 18/05/2026
1 in 1.0 years
99.02 %
60m
15.0 mm
11:30am 18/05/2026
12:30pm 18/05/2026
1 in 1.0 years
98.74 %
90m
18.0 mm
11:00am 18/05/2026
12:30pm 18/05/2026
1 in 1.0 years
98.36 %
120m
21.0 mm
11:00am 18/05/2026
1:00pm 18/05/2026
1 in 1.0 years
97.35 %
3h
24.0 mm
10:30am 18/05/2026
1:30pm 18/05/2026
1 in 1.0 years
96.82 %
4h
28.0 mm
10:00am 18/05/2026
2:30pm 18/05/2026
1 in 1.0 years
95.96 %
6h
32.0 mm
8:30am 18/05/2026
2:30pm 18/05/2026
1 in 1.1 years
94.71 %
9h
35.0 mm
5:30am 18/05/2026
2:30pm 18/05/2026
1 in 1.0 years
95.49 %
12h
41.0 mm
2:30am 18/05/2026
2:30pm 18/05/2026
1 in 1.1 years
92.85 %
18h
46.0 mm
1:45am 18/05/2026
7:45pm 18/05/2026
1 in 1.1 years
93.44 %
24h
49.0 mm
2:00am 18/05/2026
2:00am 19/05/2026
1 in 1.1 years
94.73 %
30h
49.0 mm
8:00pm 17/05/2026
2:00am 19/05/2026
1 in 1.0 years
96.27 %
36h
56.0 mm
1:00am 18/05/2026
1:00pm 19/05/2026
1 in 1.1 years
94.19 %
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
