12:00am 18/01/2026 to 12:00am 20/01/2026
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
60m
9.8 mm
9:00pm 18/01/2026
10:00pm 18/01/2026
1 in 1.0 years
96.74 %
120m
11.2 mm
9:00pm 18/01/2026
11:00pm 18/01/2026
1 in 1.0 years
97.73 %
3h
12.0 mm
9:00pm 18/01/2026
12:00am 19/01/2026
1 in 1.0 years
98.22 %
6h
12.0 mm
9:00pm 18/01/2026
3:00am 19/01/2026
1 in 1.0 years
98.82 %
9h
12.0 mm
9:00pm 18/01/2026
6:00am 19/01/2026
1 in 1.0 years
99.18 %
12h
12.0 mm
9:00pm 18/01/2026
9:00am 19/01/2026
1 in 1.0 years
99.42 %
18h
12.2 mm
9:00pm 18/01/2026
3:00pm 19/01/2026
1 in 1.0 years
99.73 %
24h
12.2 mm
9:00pm 18/01/2026
9:00pm 19/01/2026
1 in 1.0 years
99.79 %
30h
12.2 mm
6:00pm 18/01/2026
12:00am 20/01/2026
1 in 1.0 years
99.82 %
36h
12.2 mm
12:00pm 18/01/2026
12:00am 20/01/2026
1 in 1.0 years
99.85 %
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.