3:00am 18/01/2026 to 3:00am 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
13.6 mm
8:00pm 18/01/2026
9:00pm 18/01/2026
1 in 1.0 years
99.78 %
120m
22.6 mm
7:00pm 18/01/2026
9:00pm 18/01/2026
1 in 1.0 years
97.02 %
3h
26.2 mm
6:00pm 18/01/2026
9:00pm 18/01/2026
1 in 1.0 years
96.83 %
6h
42.2 mm
3:00pm 18/01/2026
9:00pm 18/01/2026
1 in 1.1 years
88.51 %
9h
51.6 mm
12:00pm 18/01/2026
9:00pm 18/01/2026
1 in 1.1 years
87.33 %
12h
55.0 mm
10:00am 18/01/2026
10:00pm 18/01/2026
1 in 1.1 years
90.19 %
18h
64.4 mm
10:00am 18/01/2026
4:00am 19/01/2026
1 in 1.1 years
91.26 %
24h
67.0 mm
10:00am 18/01/2026
10:00am 19/01/2026
1 in 1.1 years
95.05 %
30h
70.6 mm
10:00am 18/01/2026
4:00pm 19/01/2026
1 in 1.0 years
95.8 %
36h
71.8 mm
10:00am 18/01/2026
10:00pm 19/01/2026
1 in 1.0 years
96.81 %
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.