2:40pm 17/01/2026 to 2:40pm 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
10m
6.8 mm
7:10pm 18/01/2026
7:20pm 18/01/2026
1 in 1 years
100.0 %
20m
12.8 mm
7:00pm 18/01/2026
7:20pm 18/01/2026
1 in 1 years
100.0 %
30m
17.2 mm
7:00pm 18/01/2026
7:30pm 18/01/2026
1 in 1 years
100.0 %
60m
24.4 mm
6:50pm 18/01/2026
7:50pm 18/01/2026
1 in 1.0 years
99.84 %
90m
25.4 mm
6:40pm 18/01/2026
8:10pm 18/01/2026
1 in 1.0 years
99.91 %
120m
26.2 mm
6:40pm 18/01/2026
8:40pm 18/01/2026
1 in 1.0 years
99.93 %
3h
27.0 mm
6:10pm 18/01/2026
9:10pm 18/01/2026
1 in 1.0 years
99.95 %
4h
27.2 mm
5:10pm 18/01/2026
9:40pm 18/01/2026
1 in 1 years
100.0 %
6h
32.8 mm
1:40pm 18/01/2026
7:40pm 18/01/2026
1 in 1.0 years
99.81 %
9h
36.6 mm
1:40pm 18/01/2026
10:40pm 18/01/2026
1 in 1.0 years
99.76 %
12h
36.8 mm
10:00am 18/01/2026
10:00pm 18/01/2026
1 in 1.0 years
99.84 %
18h
42.2 mm
1:30am 18/01/2026
7:30pm 18/01/2026
1 in 1.0 years
99.81 %
24h
62.6 mm
9:50pm 17/01/2026
9:50pm 18/01/2026
1 in 1.0 years
98.33 %
30h
62.6 mm
9:50pm 17/01/2026
3:50am 19/01/2026
1 in 1.0 years
98.84 %
36h
62.8 mm
9:50pm 17/01/2026
9:50am 19/01/2026
1 in 1.0 years
99.28 %
48h
62.8 mm
2:40pm 17/01/2026
2:40pm 19/01/2026
1 in 1.0 years
99.82 %
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.