Dark mode
Light mode 2:45pm 16/05/2026 to 2:45pm 18/05/2026
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
13.0 mm
12:30pm 18/05/2026
12:45pm 18/05/2026
1 in 1.0 years
95.54 %
30m
22.0 mm
12:15pm 18/05/2026
12:45pm 18/05/2026
1 in 1.2 years
85.45 %
45m
25.0 mm
12:15pm 18/05/2026
1:00pm 18/05/2026
1 in 1.1 years
87.19 %
60m
27.0 mm
12:00pm 18/05/2026
1:00pm 18/05/2026
1 in 1.1 years
87.96 %
90m
31.0 mm
12:15pm 18/05/2026
1:45pm 18/05/2026
1 in 1.1 years
87.19 %
120m
37.0 mm
10:45am 18/05/2026
12:45pm 18/05/2026
1 in 1.3 years
78.99 %
3h
46.0 mm
10:00am 18/05/2026
1:00pm 18/05/2026
1 in 1.4 years
70.19 %
4h
57.0 mm
8:30am 18/05/2026
1:00pm 18/05/2026
1 in 1.6 years
63.21 %
6h
64.0 mm
8:00am 18/05/2026
2:00pm 18/05/2026
1 in 1.7 years
60.4 %
9h
67.0 mm
5:00am 18/05/2026
2:00pm 18/05/2026
1 in 1.5 years
67.9 %
12h
76.0 mm
1:45am 18/05/2026
1:45pm 18/05/2026
1 in 1.5 years
65.93 %
18h
87.0 mm
8:00pm 17/05/2026
2:00pm 18/05/2026
1 in 1.5 years
66.47 %
24h
88.0 mm
2:00pm 17/05/2026
2:00pm 18/05/2026
1 in 1.4 years
73.03 %
30h
88.0 mm
8:00am 17/05/2026
2:00pm 18/05/2026
1 in 1.3 years
79.0 %
36h
88.0 mm
2:00am 17/05/2026
2:00pm 18/05/2026
1 in 1.2 years
84.13 %
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
