1:50pm 20/01/2026 to 1:50pm 22/01/2026
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
10m
11.2 mm
3:50pm 20/01/2026
4:00pm 20/01/2026
1 in 1.1 years
95.02 %
20m
15.2 mm
3:40pm 20/01/2026
4:00pm 20/01/2026
1 in 1.0 years
97.33 %
30m
24.2 mm
3:30pm 20/01/2026
4:00pm 20/01/2026
1 in 1.1 years
87.8 %
60m
31.4 mm
3:20pm 20/01/2026
4:20pm 20/01/2026
1 in 1.1 years
89.06 %
90m
32.2 mm
3:20pm 20/01/2026
4:50pm 20/01/2026
1 in 1.1 years
93.44 %
120m
33.6 mm
3:20pm 20/01/2026
5:20pm 20/01/2026
1 in 1.1 years
94.62 %
3h
36.0 mm
3:10pm 20/01/2026
6:10pm 20/01/2026
1 in 1.1 years
94.9 %
4h
36.4 mm
3:20pm 20/01/2026
7:50pm 20/01/2026
1 in 1.0 years
95.83 %
6h
36.4 mm
3:20pm 20/01/2026
9:20pm 20/01/2026
1 in 1.0 years
96.51 %
9h
41.0 mm
2:40pm 20/01/2026
11:40pm 20/01/2026
1 in 1.0 years
95.58 %
12h
41.0 mm
1:50pm 20/01/2026
1:50am 21/01/2026
1 in 1.0 years
96.47 %
18h
41.0 mm
1:50pm 20/01/2026
7:50am 21/01/2026
1 in 1.0 years
98.13 %
24h
41.4 mm
3:20pm 20/01/2026
3:20pm 21/01/2026
1 in 1.0 years
98.53 %
30h
44.4 mm
3:20pm 20/01/2026
9:20pm 21/01/2026
1 in 1.0 years
98.57 %
36h
48.2 mm
3:20pm 20/01/2026
3:20am 22/01/2026
1 in 1.0 years
98.51 %
48h
48.2 mm
1:50pm 20/01/2026
1:50pm 22/01/2026
1 in 1.0 years
99.12 %
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.