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8:45pm 11/05/2026 to 8:45pm 13/05/2026
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
6:45pm 13/05/2026
7:00pm 13/05/2026
1 in 1 years
100.0 %
30m
8.0 mm
6:45pm 13/05/2026
7:15pm 13/05/2026
1 in 1 years
100.0 %
45m
9.0 mm
6:30pm 13/05/2026
7:15pm 13/05/2026
1 in 1 years
100.0 %
60m
12.0 mm
6:15pm 13/05/2026
7:15pm 13/05/2026
1 in 1 years
100.0 %
90m
13.0 mm
6:00pm 13/05/2026
7:30pm 13/05/2026
1 in 1 years
100.0 %
120m
13.0 mm
5:30pm 13/05/2026
7:30pm 13/05/2026
1 in 1 years
100.0 %
3h
13.0 mm
4:30pm 13/05/2026
7:30pm 13/05/2026
1 in 1 years
100.0 %
4h
13.0 mm
3:00pm 13/05/2026
7:30pm 13/05/2026
1 in 1 years
100.0 %
6h
13.0 mm
1:30pm 13/05/2026
7:30pm 13/05/2026
1 in 1 years
100.0 %
9h
13.0 mm
10:30am 13/05/2026
7:30pm 13/05/2026
1 in 1 years
100.0 %
12h
15.0 mm
7:30am 13/05/2026
7:30pm 13/05/2026
1 in 1 years
100.0 %
18h
16.0 mm
1:30am 13/05/2026
7:30pm 13/05/2026
1 in 1 years
100.0 %
24h
16.0 mm
7:30pm 12/05/2026
7:30pm 13/05/2026
1 in 1 years
100.0 %
30h
20.0 mm
1:30pm 12/05/2026
7:30pm 13/05/2026
1 in 1 years
100.0 %
36h
20.0 mm
7:30am 12/05/2026
7:30pm 13/05/2026
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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