3:30pm 17/01/2026 to 3:30pm 19/01/2026
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
5.0 mm
9:30pm 18/01/2026
9:45pm 18/01/2026
1 in 1 years
100.0 %
30m
9.0 mm
9:30pm 18/01/2026
10:00pm 18/01/2026
1 in 1.0 years
99.8 %
45m
12.0 mm
9:00pm 18/01/2026
9:45pm 18/01/2026
1 in 1.0 years
99.2 %
60m
16.0 mm
9:00pm 18/01/2026
10:00pm 18/01/2026
1 in 1.0 years
98.04 %
90m
17.0 mm
8:30pm 18/01/2026
10:00pm 18/01/2026
1 in 1.0 years
98.46 %
120m
18.0 mm
8:45pm 18/01/2026
10:45pm 18/01/2026
1 in 1.0 years
98.58 %
3h
18.0 mm
7:45pm 18/01/2026
10:45pm 18/01/2026
1 in 1.0 years
99.19 %
4h
18.0 mm
6:15pm 18/01/2026
10:45pm 18/01/2026
1 in 1.0 years
99.77 %
6h
18.0 mm
4:45pm 18/01/2026
10:45pm 18/01/2026
1 in 1.0 years
99.86 %
9h
18.0 mm
1:45pm 18/01/2026
10:45pm 18/01/2026
1 in 1.0 years
99.99 %
12h
18.0 mm
10:45am 18/01/2026
10:45pm 18/01/2026
1 in 1 years
100.0 %
18h
18.0 mm
4:45am 18/01/2026
10:45pm 18/01/2026
1 in 1 years
100.0 %
24h
18.0 mm
10:45pm 17/01/2026
10:45pm 18/01/2026
1 in 1 years
100.0 %
30h
18.0 mm
4:45pm 17/01/2026
10:45pm 18/01/2026
1 in 1 years
100.0 %
36h
18.0 mm
3:45pm 17/01/2026
3:45am 19/01/2026
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.