3:15pm 17/01/2026 to 3:15pm 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
9.8 mm
9:45am 18/01/2026
10:00am 18/01/2026
1 in 1.0 years
98.7 %
30m
18.8 mm
9:30am 18/01/2026
10:00am 18/01/2026
1 in 1.1 years
89.08 %
45m
23.8 mm
9:30am 18/01/2026
10:15am 18/01/2026
1 in 1.2 years
82.62 %
60m
23.8 mm
9:15am 18/01/2026
10:15am 18/01/2026
1 in 1.1 years
89.62 %
90m
25.0 mm
9:15am 18/01/2026
10:45am 18/01/2026
1 in 1.1 years
93.53 %
120m
25.0 mm
8:45am 18/01/2026
10:45am 18/01/2026
1 in 1.0 years
96.3 %
3h
25.0 mm
7:45am 18/01/2026
10:45am 18/01/2026
1 in 1.0 years
98.4 %
4h
25.8 mm
9:30am 18/01/2026
2:00pm 18/01/2026
1 in 1.0 years
99.02 %
6h
29.6 mm
9:00am 18/01/2026
3:00pm 18/01/2026
1 in 1.0 years
98.74 %
9h
29.6 mm
6:00am 18/01/2026
3:00pm 18/01/2026
1 in 1.0 years
99.62 %
12h
29.6 mm
3:00am 18/01/2026
3:00pm 18/01/2026
1 in 1.0 years
99.87 %
18h
29.6 mm
9:00pm 17/01/2026
3:00pm 18/01/2026
1 in 1 years
100.0 %
24h
31.0 mm
5:00pm 17/01/2026
5:00pm 18/01/2026
1 in 1 years
100.0 %
30h
31.0 mm
5:00pm 17/01/2026
11:00pm 18/01/2026
1 in 1 years
100.0 %
36h
31.0 mm
5:00pm 17/01/2026
5:00am 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.