6:45am 28/05/2026 to 6:45am 30/05/2026
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
3:15pm 28/05/2026
3:30pm 28/05/2026
1 in 1.4 years
71.81 %
30m
17.0 mm
3:15pm 28/05/2026
3:45pm 28/05/2026
1 in 1.3 years
74.78 %
45m
18.0 mm
3:15pm 28/05/2026
4:00pm 28/05/2026
1 in 1.2 years
83.02 %
60m
19.0 mm
3:15pm 28/05/2026
4:15pm 28/05/2026
1 in 1.2 years
86.71 %
90m
21.0 mm
3:15pm 28/05/2026
4:45pm 28/05/2026
1 in 1.1 years
87.78 %
120m
22.0 mm
3:00pm 28/05/2026
5:00pm 28/05/2026
1 in 1.1 years
89.44 %
3h
23.2 mm
3:00pm 28/05/2026
6:00pm 28/05/2026
1 in 1.1 years
92.28 %
4h
24.2 mm
2:30pm 28/05/2026
7:00pm 28/05/2026
1 in 1.0 years
95.3 %
6h
24.6 mm
3:00pm 28/05/2026
9:00pm 28/05/2026
1 in 1.0 years
96.71 %
9h
26.8 mm
8:45am 28/05/2026
5:45pm 28/05/2026
1 in 1.0 years
97.2 %
12h
30.0 mm
7:00am 28/05/2026
7:00pm 28/05/2026
1 in 1.0 years
96.29 %
18h
33.4 mm
7:15am 28/05/2026
1:15am 29/05/2026
1 in 1.0 years
96.08 %
24h
34.2 mm
7:00am 28/05/2026
7:00am 29/05/2026
1 in 1.0 years
97.06 %
30h
34.4 mm
7:00am 28/05/2026
1:00pm 29/05/2026
1 in 1.0 years
98.03 %
36h
34.8 mm
7:00am 28/05/2026
7:00pm 29/05/2026
1 in 1.0 years
98.3 %
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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