2:30pm 17/01/2026 to 2:30pm 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
13.0 mm
12:15pm 18/01/2026
12:30pm 18/01/2026
1 in 1.4 years
73.17 %
30m
14.0 mm
12:15pm 18/01/2026
12:45pm 18/01/2026
1 in 1.1 years
90.77 %
45m
14.0 mm
12:00pm 18/01/2026
12:45pm 18/01/2026
1 in 1.0 years
96.24 %
60m
14.0 mm
11:45am 18/01/2026
12:45pm 18/01/2026
1 in 1.0 years
98.21 %
90m
14.0 mm
11:15am 18/01/2026
12:45pm 18/01/2026
1 in 1.0 years
99.02 %
120m
14.0 mm
10:45am 18/01/2026
12:45pm 18/01/2026
1 in 1.0 years
99.61 %
3h
14.2 mm
12:00pm 18/01/2026
3:00pm 18/01/2026
1 in 1.0 years
99.89 %
4h
14.8 mm
8:15am 18/01/2026
12:45pm 18/01/2026
1 in 1 years
100.0 %
6h
15.8 mm
6:45am 18/01/2026
12:45pm 18/01/2026
1 in 1 years
100.0 %
9h
19.0 mm
6:00am 18/01/2026
3:00pm 18/01/2026
1 in 1.0 years
99.94 %
12h
19.0 mm
3:00am 18/01/2026
3:00pm 18/01/2026
1 in 1 years
100.0 %
18h
19.0 mm
9:00pm 17/01/2026
3:00pm 18/01/2026
1 in 1 years
100.0 %
24h
19.0 mm
3:00pm 17/01/2026
3:00pm 18/01/2026
1 in 1 years
100.0 %
30h
19.0 mm
2:45pm 17/01/2026
8:45pm 18/01/2026
1 in 1 years
100.0 %
36h
19.0 mm
2:45pm 17/01/2026
2:45am 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.