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
60m
9.2 mm
1:00am 19/01/2026
2:00am 19/01/2026
1 in 1 years
100.0 %
120m
9.8 mm
5:00am 19/01/2026
7:00am 19/01/2026
1 in 1 years
100.0 %
3h
15.6 mm
11:00pm 18/01/2026
2:00am 19/01/2026
1 in 1 years
100.0 %
6h
19.0 mm
1:00am 19/01/2026
7:00am 19/01/2026
1 in 1 years
100.0 %
9h
26.6 mm
11:00pm 18/01/2026
8:00am 19/01/2026
1 in 1 years
100.0 %
12h
32.6 mm
10:00pm 18/01/2026
10:00am 19/01/2026
1 in 1.0 years
99.98 %
18h
36.8 mm
5:00pm 18/01/2026
11:00am 19/01/2026
1 in 1 years
100.0 %
24h
38.8 mm
10:00am 18/01/2026
10:00am 19/01/2026
1 in 1 years
100.0 %
30h
46.4 mm
4:00am 18/01/2026
10:00am 19/01/2026
1 in 1.0 years
99.95 %
36h
46.8 mm
1:00am 18/01/2026
1:00pm 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.