2:30pm 17/01/2026 to 2:30pm 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
8.0 mm
5:45pm 18/01/2026
6:00pm 18/01/2026
1 in 1.0 years
99.37 %
30m
11.0 mm
5:45pm 18/01/2026
6:15pm 18/01/2026
1 in 1.0 years
99.46 %
45m
12.0 mm
5:45pm 18/01/2026
6:30pm 18/01/2026
1 in 1.0 years
99.75 %
60m
12.0 mm
5:30pm 18/01/2026
6:30pm 18/01/2026
1 in 1.0 years
99.84 %
90m
12.0 mm
5:00pm 18/01/2026
6:30pm 18/01/2026
1 in 1.0 years
99.93 %
120m
12.0 mm
4:30pm 18/01/2026
6:30pm 18/01/2026
1 in 1.0 years
99.99 %
3h
12.0 mm
3:30pm 18/01/2026
6:30pm 18/01/2026
1 in 1 years
100.0 %
4h
12.0 mm
2:00pm 18/01/2026
6:30pm 18/01/2026
1 in 1 years
100.0 %
6h
13.0 mm
5:30pm 18/01/2026
11:30pm 18/01/2026
1 in 1 years
100.0 %
9h
13.0 mm
2:30pm 18/01/2026
11:30pm 18/01/2026
1 in 1 years
100.0 %
12h
13.0 mm
11:30am 18/01/2026
11:30pm 18/01/2026
1 in 1 years
100.0 %
18h
13.0 mm
5:30am 18/01/2026
11:30pm 18/01/2026
1 in 1 years
100.0 %
24h
14.0 mm
6:15pm 17/01/2026
6:15pm 18/01/2026
1 in 1 years
100.0 %
30h
19.0 mm
2:45pm 17/01/2026
8:45pm 18/01/2026
1 in 1 years
100.0 %
36h
20.0 mm
2:45pm 17/01/2026
2:45am 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.