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Light mode11:10pm 24/05/2026 to 11:10pm 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
5.6 mm
3:00pm 25/05/2026
3:10pm 25/05/2026
1 in 1.2 years
81.39 %
20m
10.2 mm
3:00pm 25/05/2026
3:20pm 25/05/2026
1 in 1.7 years
58.12 %
30m
13.6 mm
2:50pm 25/05/2026
3:20pm 25/05/2026
1 in 2.2 years
45.29 %
60m
16.0 mm
2:30pm 25/05/2026
3:30pm 25/05/2026
1 in 1.9 years
53.68 %
90m
16.2 mm
2:10pm 25/05/2026
3:40pm 25/05/2026
1 in 1.5 years
66.59 %
120m
16.2 mm
1:40pm 25/05/2026
3:40pm 25/05/2026
1 in 1.3 years
75.8 %
3h
16.2 mm
12:40pm 25/05/2026
3:40pm 25/05/2026
1 in 1.1 years
88.33 %
4h
16.2 mm
11:10am 25/05/2026
3:40pm 25/05/2026
1 in 1.0 years
95.61 %
6h
16.4 mm
9:40am 25/05/2026
3:40pm 25/05/2026
1 in 1.0 years
97.71 %
9h
16.4 mm
6:40am 25/05/2026
3:40pm 25/05/2026
1 in 1.0 years
99.1 %
12h
16.4 mm
3:40am 25/05/2026
3:40pm 25/05/2026
1 in 1.0 years
99.76 %
18h
16.6 mm
8:00am 25/05/2026
2:00am 26/05/2026
1 in 1.0 years
99.96 %
24h
16.6 mm
2:00am 25/05/2026
2:00am 26/05/2026
1 in 1 years
100.0 %
30h
16.8 mm
7:30am 25/05/2026
1:30pm 26/05/2026
1 in 1 years
100.0 %
36h
16.8 mm
1:30am 25/05/2026
1:30pm 26/05/2026
1 in 1 years
100.0 %
48h
16.8 mm
11:10pm 24/05/2026
11:10pm 26/05/2026
1 in 1 years
100.0 %
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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