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
7.0 mm
9:30am 18/01/2026
9:45am 18/01/2026
1 in 1.0 years
99.8 %
30m
10.0 mm
9:15am 18/01/2026
9:45am 18/01/2026
1 in 1.0 years
99.73 %
45m
10.0 mm
9:00am 18/01/2026
9:45am 18/01/2026
1 in 1.0 years
99.94 %
60m
10.0 mm
8:45am 18/01/2026
9:45am 18/01/2026
1 in 1 years
100.0 %
90m
10.0 mm
8:15am 18/01/2026
9:45am 18/01/2026
1 in 1 years
100.0 %
120m
10.0 mm
7:45am 18/01/2026
9:45am 18/01/2026
1 in 1 years
100.0 %
3h
10.8 mm
9:00am 18/01/2026
12:00pm 18/01/2026
1 in 1 years
100.0 %
4h
10.8 mm
7:30am 18/01/2026
12:00pm 18/01/2026
1 in 1 years
100.0 %
6h
10.8 mm
6:00am 18/01/2026
12:00pm 18/01/2026
1 in 1 years
100.0 %
9h
11.4 mm
9:00am 18/01/2026
6:00pm 18/01/2026
1 in 1 years
100.0 %
12h
11.4 mm
6:00am 18/01/2026
6:00pm 18/01/2026
1 in 1 years
100.0 %
18h
13.2 mm
3:45pm 17/01/2026
9:45am 18/01/2026
1 in 1 years
100.0 %
24h
14.0 mm
4:00pm 17/01/2026
4:00pm 18/01/2026
1 in 1 years
100.0 %
30h
14.6 mm
4:00pm 17/01/2026
10:00pm 18/01/2026
1 in 1 years
100.0 %
36h
14.6 mm
4:00pm 17/01/2026
4:00am 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.