3:30pm 17/01/2026 to 3:30pm 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
4.5 mm
3:15am 18/01/2026
3:30am 18/01/2026
1 in 1 years
100.0 %
30m
9.0 mm
7:30pm 18/01/2026
8:00pm 18/01/2026
1 in 1 years
100.0 %
45m
13.5 mm
7:30pm 18/01/2026
8:15pm 18/01/2026
1 in 1 years
100.0 %
60m
17.0 mm
7:30pm 18/01/2026
8:30pm 18/01/2026
1 in 1 years
100.0 %
90m
18.5 mm
7:15pm 18/01/2026
8:45pm 18/01/2026
1 in 1 years
100.0 %
120m
20.0 mm
7:15pm 18/01/2026
9:15pm 18/01/2026
1 in 1 years
100.0 %
3h
20.0 mm
6:15pm 18/01/2026
9:15pm 18/01/2026
1 in 1 years
100.0 %
4h
20.0 mm
4:45pm 18/01/2026
9:15pm 18/01/2026
1 in 1 years
100.0 %
6h
21.0 mm
9:30pm 17/01/2026
3:30am 18/01/2026
1 in 1 years
100.0 %
9h
26.5 mm
1:15am 18/01/2026
10:15am 18/01/2026
1 in 1 years
100.0 %
12h
30.5 mm
10:15pm 17/01/2026
10:15am 18/01/2026
1 in 1 years
100.0 %
18h
40.0 mm
2:45am 18/01/2026
8:45pm 18/01/2026
1 in 1.0 years
99.86 %
24h
53.5 mm
8:45pm 17/01/2026
8:45pm 18/01/2026
1 in 1.0 years
99.13 %
30h
57.0 mm
10:00pm 17/01/2026
4:00am 19/01/2026
1 in 1.0 years
99.23 %
36h
60.0 mm
4:00pm 17/01/2026
4:00am 19/01/2026
1 in 1.0 years
99.35 %
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.