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Light mode 2:30am 09/07/2026 to 2:30am 11/07/2026
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
27.0 mm
10:40am 09/07/2026
10:50am 09/07/2026
1 in 7.7 years
13.07 %
20m
39.6 mm
10:40am 09/07/2026
11:00am 09/07/2026
1 in 5.4 years
18.57 %
30m
53.0 mm
10:40am 09/07/2026
11:10am 09/07/2026
1 in 8.8 years
11.41 %
60m
79.0 mm
10:40am 09/07/2026
11:40am 09/07/2026
1 in 19.1 years
5.24 %
90m
89.6 mm
10:10am 09/07/2026
11:40am 09/07/2026
1 in 17.6 years
5.68 %
120m
113.4 mm
9:50am 09/07/2026
11:50am 09/07/2026
1 in 61.9 years
1.62 %
3h
113.4 mm
8:50am 09/07/2026
11:50am 09/07/2026
1 in 23.6 years
4.24 %
4h
113.4 mm
7:20am 09/07/2026
11:50am 09/07/2026
1 in 12.5 years
7.97 %
6h
113.4 mm
5:50am 09/07/2026
11:50am 09/07/2026
1 in 8.6 years
11.57 %
9h
113.4 mm
2:50am 09/07/2026
11:50am 09/07/2026
1 in 5.8 years
17.2 %
12h
0.0 mm
8:50am 10/07/2026
8:50pm 10/07/2026
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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