4:15pm 17/01/2026 to 4:15pm 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
1.4 mm
9:00pm 17/01/2026
9:15pm 17/01/2026
1 in 1 years
100.0 %
30m
2.0 mm
9:00pm 17/01/2026
9:30pm 17/01/2026
1 in 1 years
100.0 %
45m
2.2 mm
4:45pm 17/01/2026
5:30pm 17/01/2026
1 in 1 years
100.0 %
60m
3.0 mm
9:00pm 17/01/2026
10:00pm 17/01/2026
1 in 1 years
100.0 %
90m
4.0 mm
9:00pm 17/01/2026
10:30pm 17/01/2026
1 in 1 years
100.0 %
120m
5.0 mm
4:45pm 17/01/2026
6:45pm 17/01/2026
1 in 1 years
100.0 %
3h
7.0 mm
4:45pm 17/01/2026
7:45pm 17/01/2026
1 in 1 years
100.0 %
4h
10.2 mm
4:45pm 17/01/2026
9:15pm 17/01/2026
1 in 1 years
100.0 %
6h
13.2 mm
4:45pm 17/01/2026
10:45pm 17/01/2026
1 in 1 years
100.0 %
9h
19.4 mm
4:45pm 17/01/2026
1:45am 18/01/2026
1 in 1 years
100.0 %
12h
24.8 mm
5:15pm 17/01/2026
5:15am 18/01/2026
1 in 1 years
100.0 %
18h
34.4 mm
4:30pm 17/01/2026
10:30am 18/01/2026
1 in 1.0 years
99.83 %
24h
42.8 mm
4:45pm 17/01/2026
4:45pm 18/01/2026
1 in 1.0 years
99.44 %
30h
47.0 mm
4:45pm 17/01/2026
10:45pm 18/01/2026
1 in 1.0 years
99.35 %
36h
48.8 mm
4:45pm 17/01/2026
4:45am 19/01/2026
1 in 1.0 years
99.46 %
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.