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Light mode10:30pm 24/05/2026 to 10:30pm 26/05/2026
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
10m
9.8 mm
8:20pm 25/05/2026
8:30pm 25/05/2026
1 in 1.3 years
77.55 %
15m
0.2 mm
7:12am 25/05/2026
7:27am 25/05/2026
1 in 1 years
100.0 %
20m
16.4 mm
8:20pm 25/05/2026
8:40pm 25/05/2026
1 in 1.6 years
62.53 %
30m
19.2 mm
8:20pm 25/05/2026
8:50pm 25/05/2026
1 in 1.5 years
64.8 %
60m
20.0 mm
8:10pm 25/05/2026
9:10pm 25/05/2026
1 in 1.2 years
86.47 %
90m
20.2 mm
8:10pm 25/05/2026
9:40pm 25/05/2026
1 in 1.1 years
93.3 %
120m
20.2 mm
8:10pm 25/05/2026
10:10pm 25/05/2026
1 in 1.0 years
96.63 %
3h
20.2 mm
8:10pm 25/05/2026
11:10pm 25/05/2026
1 in 1.0 years
98.75 %
4h
20.4 mm
8:10pm 25/05/2026
12:40am 26/05/2026
1 in 1.0 years
99.76 %
6h
24.0 mm
9:20am 26/05/2026
3:20pm 26/05/2026
1 in 1.0 years
99.51 %
9h
30.6 mm
8:10pm 25/05/2026
5:10am 26/05/2026
1 in 1.0 years
99.09 %
12h
35.2 mm
3:20am 26/05/2026
3:20pm 26/05/2026
1 in 1.0 years
99.02 %
18h
53.6 mm
8:20pm 25/05/2026
2:20pm 26/05/2026
1 in 1.0 years
95.94 %
24h
60.8 mm
8:10pm 25/05/2026
8:10pm 26/05/2026
1 in 1.0 years
95.81 %
30h
62.6 mm
4:30pm 25/05/2026
10:30pm 26/05/2026
1 in 1.0 years
97.04 %
36h
63.8 mm
3:30am 25/05/2026
3:30pm 26/05/2026
1 in 1.0 years
98.07 %
48h
75.6 mm
10:30pm 24/05/2026
10:30pm 26/05/2026
1 in 1.0 years
96.58 %
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.
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