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Light mode 5:00am 17/06/2026 to 5:00am 19/06/2026
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
2.8 mm
3:15am 19/06/2026
3:30am 19/06/2026
1 in 1 years
100.0 %
30m
4.4 mm
4:15am 19/06/2026
4:45am 19/06/2026
1 in 1 years
100.0 %
45m
5.4 mm
4:00am 19/06/2026
4:45am 19/06/2026
1 in 1 years
100.0 %
60m
6.2 mm
3:45am 19/06/2026
4:45am 19/06/2026
1 in 1 years
100.0 %
90m
9.2 mm
3:15am 19/06/2026
4:45am 19/06/2026
1 in 1.0 years
99.82 %
120m
11.2 mm
2:45am 19/06/2026
4:45am 19/06/2026
1 in 1.0 years
99.31 %
3h
15.4 mm
1:30am 19/06/2026
4:30am 19/06/2026
1 in 1.0 years
97.29 %
4h
19.2 mm
12:00am 19/06/2026
4:30am 19/06/2026
1 in 1.1 years
95.02 %
6h
22.6 mm
10:45pm 18/06/2026
4:45am 19/06/2026
1 in 1.1 years
91.14 %
9h
22.6 mm
7:45pm 18/06/2026
4:45am 19/06/2026
1 in 1.0 years
96.95 %
12h
25.2 mm
4:45pm 18/06/2026
4:45am 19/06/2026
1 in 1.0 years
96.53 %
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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