3:15pm 17/01/2026 to 3:15pm 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
11.0 mm
11:15pm 17/01/2026
11:30pm 17/01/2026
1 in 1.0 years
99.79 %
30m
20.0 mm
11:15pm 17/01/2026
11:45pm 17/01/2026
1 in 1.0 years
98.35 %
45m
23.0 mm
11:15pm 17/01/2026
12:00am 18/01/2026
1 in 1.0 years
98.58 %
60m
25.0 mm
11:15pm 17/01/2026
12:15am 18/01/2026
1 in 1.0 years
98.77 %
90m
27.0 mm
11:15pm 17/01/2026
12:45am 18/01/2026
1 in 1.0 years
99.2 %
120m
31.0 mm
11:15pm 17/01/2026
1:15am 18/01/2026
1 in 1.0 years
98.99 %
3h
36.0 mm
11:15pm 17/01/2026
2:15am 18/01/2026
1 in 1.0 years
98.95 %
4h
39.0 mm
11:00pm 17/01/2026
3:30am 18/01/2026
1 in 1.0 years
99.24 %
6h
46.0 mm
7:00pm 17/01/2026
1:00am 18/01/2026
1 in 1.0 years
98.91 %
9h
57.0 mm
6:30pm 17/01/2026
3:30am 18/01/2026
1 in 1.0 years
98.59 %
12h
57.0 mm
3:30pm 17/01/2026
3:30am 18/01/2026
1 in 1.0 years
99.11 %
18h
57.0 mm
3:30pm 17/01/2026
9:30am 18/01/2026
1 in 1.0 years
99.78 %
24h
57.0 mm
3:30pm 17/01/2026
3:30pm 18/01/2026
1 in 1.0 years
99.91 %
30h
57.0 mm
3:30pm 17/01/2026
9:30pm 18/01/2026
1 in 1 years
100.0 %
36h
57.0 mm
3:30pm 17/01/2026
3:30am 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.