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Light mode12:30am 28/05/2026 to 12:30am 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
4.0 mm
3:15pm 28/05/2026
3:30pm 28/05/2026
1 in 1 years
100.0 %
30m
5.0 mm
6:45am 28/05/2026
7:15am 28/05/2026
1 in 1 years
100.0 %
45m
8.0 mm
3:15pm 28/05/2026
4:00pm 28/05/2026
1 in 1 years
100.0 %
60m
8.0 mm
3:00pm 28/05/2026
4:00pm 28/05/2026
1 in 1 years
100.0 %
90m
11.0 mm
6:45am 28/05/2026
8:15am 28/05/2026
1 in 1.0 years
99.95 %
120m
12.0 mm
6:30am 28/05/2026
8:30am 28/05/2026
1 in 1.0 years
99.96 %
3h
15.0 mm
6:45am 28/05/2026
9:45am 28/05/2026
1 in 1.0 years
99.81 %
4h
16.0 mm
5:45am 28/05/2026
10:15am 28/05/2026
1 in 1.0 years
99.9 %
6h
16.0 mm
4:15am 28/05/2026
10:15am 28/05/2026
1 in 1 years
100.0 %
9h
22.0 mm
6:45am 28/05/2026
3:45pm 28/05/2026
1 in 1.0 years
99.59 %
12h
26.0 mm
4:45am 28/05/2026
4:45pm 28/05/2026
1 in 1.0 years
98.97 %
18h
33.0 mm
1:15am 28/05/2026
7:15pm 28/05/2026
1 in 1.0 years
97.81 %
24h
36.0 mm
6:45am 28/05/2026
6:45am 29/05/2026
1 in 1.0 years
97.56 %
30h
40.0 mm
2:30am 28/05/2026
8:30am 29/05/2026
1 in 1.0 years
96.41 %
36h
41.0 mm
12:45am 28/05/2026
12:45pm 29/05/2026
1 in 1.0 years
96.87 %
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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