7:30pm 04/05/2026 to 7:30pm 06/05/2026
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
9.0 mm
4:45pm 06/05/2026
5:00pm 06/05/2026
1 in 1.0 years
96.07 %
30m
14.0 mm
4:30pm 06/05/2026
5:00pm 06/05/2026
1 in 1.1 years
91.45 %
45m
19.0 mm
4:30pm 06/05/2026
5:15pm 06/05/2026
1 in 1.2 years
81.58 %
60m
21.0 mm
4:15pm 06/05/2026
5:15pm 06/05/2026
1 in 1.2 years
81.43 %
90m
22.0 mm
4:00pm 06/05/2026
5:30pm 06/05/2026
1 in 1.1 years
87.91 %
120m
22.0 mm
3:30pm 06/05/2026
5:30pm 06/05/2026
1 in 1.1 years
92.07 %
3h
22.0 mm
2:30pm 06/05/2026
5:30pm 06/05/2026
1 in 1.0 years
96.37 %
4h
23.0 mm
1:00pm 06/05/2026
5:30pm 06/05/2026
1 in 1.0 years
98.06 %
6h
23.0 mm
11:30am 06/05/2026
5:30pm 06/05/2026
1 in 1.0 years
98.71 %
9h
23.0 mm
8:30am 06/05/2026
5:30pm 06/05/2026
1 in 1.0 years
99.52 %
12h
23.0 mm
5:30am 06/05/2026
5:30pm 06/05/2026
1 in 1.0 years
99.83 %
18h
23.0 mm
11:30pm 05/05/2026
5:30pm 06/05/2026
1 in 1 years
100.0 %
24h
23.0 mm
5:30pm 05/05/2026
5:30pm 06/05/2026
1 in 1 years
100.0 %
30h
23.0 mm
11:30am 05/05/2026
5:30pm 06/05/2026
1 in 1 years
100.0 %
36h
23.0 mm
5:30am 05/05/2026
5:30pm 06/05/2026
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.