3:00pm 17/01/2026 to 3:00pm 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
22.0 mm
5:15pm 17/01/2026
5:30pm 17/01/2026
1 in 1.9 years
51.61 %
30m
22.0 mm
5:00pm 17/01/2026
5:30pm 17/01/2026
1 in 1.2 years
86.03 %
45m
23.0 mm
5:15pm 17/01/2026
6:00pm 17/01/2026
1 in 1.1 years
91.58 %
60m
23.0 mm
5:00pm 17/01/2026
6:00pm 17/01/2026
1 in 1.0 years
95.35 %
90m
24.0 mm
5:00pm 17/01/2026
6:30pm 17/01/2026
1 in 1.0 years
96.72 %
120m
24.0 mm
4:30pm 17/01/2026
6:30pm 17/01/2026
1 in 1.0 years
97.98 %
3h
25.0 mm
4:45pm 17/01/2026
7:45pm 17/01/2026
1 in 1.0 years
98.38 %
4h
26.0 mm
4:00pm 17/01/2026
8:30pm 17/01/2026
1 in 1.0 years
98.63 %
6h
26.0 mm
3:15pm 17/01/2026
9:15pm 17/01/2026
1 in 1.0 years
98.92 %
9h
26.0 mm
3:15pm 17/01/2026
12:15am 18/01/2026
1 in 1.0 years
99.36 %
12h
26.0 mm
3:15pm 17/01/2026
3:15am 18/01/2026
1 in 1.0 years
99.71 %
18h
26.0 mm
3:15pm 17/01/2026
9:15am 18/01/2026
1 in 1.0 years
99.85 %
24h
26.0 mm
3:15pm 17/01/2026
3:15pm 18/01/2026
1 in 1.0 years
99.94 %
30h
28.0 mm
3:15pm 17/01/2026
9:15pm 18/01/2026
1 in 1.0 years
99.96 %
36h
28.0 mm
3:15pm 17/01/2026
3:15am 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.