3:30pm 17/01/2026 to 3:30pm 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
5.0 mm
10:00am 18/01/2026
10:15am 18/01/2026
1 in 1 years
100.0 %
30m
5.0 mm
9:45am 18/01/2026
10:15am 18/01/2026
1 in 1 years
100.0 %
45m
6.0 mm
10:00am 18/01/2026
10:45am 18/01/2026
1 in 1 years
100.0 %
60m
6.0 mm
9:15am 18/01/2026
10:15am 18/01/2026
1 in 1 years
100.0 %
90m
7.0 mm
9:15am 18/01/2026
10:45am 18/01/2026
1 in 1 years
100.0 %
120m
7.0 mm
8:45am 18/01/2026
10:45am 18/01/2026
1 in 1 years
100.0 %
3h
7.0 mm
7:45am 18/01/2026
10:45am 18/01/2026
1 in 1 years
100.0 %
4h
7.0 mm
6:15am 18/01/2026
10:45am 18/01/2026
1 in 1 years
100.0 %
6h
9.0 mm
9:15am 18/01/2026
3:15pm 18/01/2026
1 in 1 years
100.0 %
9h
9.0 mm
6:15am 18/01/2026
3:15pm 18/01/2026
1 in 1 years
100.0 %
12h
9.0 mm
3:15am 18/01/2026
3:15pm 18/01/2026
1 in 1 years
100.0 %
18h
9.0 mm
9:15pm 17/01/2026
3:15pm 18/01/2026
1 in 1 years
100.0 %
24h
10.0 mm
3:45pm 17/01/2026
3:45pm 18/01/2026
1 in 1 years
100.0 %
30h
10.0 mm
3:45pm 17/01/2026
9:45pm 18/01/2026
1 in 1 years
100.0 %
36h
10.0 mm
3:45pm 17/01/2026
3:45am 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.