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
17.6 mm
12:00pm 18/01/2026
1:00pm 18/01/2026
1 in 1.0 years
99.34 %
120m
17.8 mm
12:00pm 18/01/2026
2:00pm 18/01/2026
1 in 1.0 years
99.82 %
3h
18.0 mm
12:00pm 18/01/2026
3:00pm 18/01/2026
1 in 1.0 years
99.89 %
6h
20.2 mm
7:00am 18/01/2026
1:00pm 18/01/2026
1 in 1.0 years
99.93 %
9h
20.6 mm
6:00am 18/01/2026
3:00pm 18/01/2026
1 in 1.0 years
100.0 %
12h
20.6 mm
2:00am 18/01/2026
2:00pm 18/01/2026
1 in 1 years
100.0 %
18h
37.4 mm
7:00pm 17/01/2026
1:00pm 18/01/2026
1 in 1.0 years
99.6 %
24h
40.0 mm
4:00pm 17/01/2026
4:00pm 18/01/2026
1 in 1.0 years
99.75 %
30h
40.0 mm
4:00pm 17/01/2026
10:00pm 18/01/2026
1 in 1.0 years
99.83 %
36h
40.0 mm
4:00pm 17/01/2026
4:00am 19/01/2026
1 in 1.0 years
99.89 %
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.