3:00pm 17/01/2026 to 3:00pm 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
12.0 mm
4:30pm 18/01/2026
4:45pm 18/01/2026
1 in 1.1 years
88.6 %
30m
13.0 mm
4:30pm 18/01/2026
5:00pm 18/01/2026
1 in 1.0 years
96.31 %
45m
13.0 mm
4:15pm 18/01/2026
5:00pm 18/01/2026
1 in 1.0 years
98.36 %
60m
13.0 mm
4:00pm 18/01/2026
5:00pm 18/01/2026
1 in 1.0 years
98.88 %
90m
13.0 mm
3:30pm 18/01/2026
5:00pm 18/01/2026
1 in 1.0 years
99.54 %
120m
13.0 mm
3:00pm 18/01/2026
5:00pm 18/01/2026
1 in 1.0 years
99.8 %
3h
13.0 mm
2:00pm 18/01/2026
5:00pm 18/01/2026
1 in 1.0 years
99.94 %
4h
14.0 mm
3:15pm 18/01/2026
7:45pm 18/01/2026
1 in 1.0 years
99.98 %
6h
14.0 mm
1:45pm 18/01/2026
7:45pm 18/01/2026
1 in 1 years
100.0 %
9h
14.0 mm
10:45am 18/01/2026
7:45pm 18/01/2026
1 in 1 years
100.0 %
12h
14.0 mm
7:45am 18/01/2026
7:45pm 18/01/2026
1 in 1 years
100.0 %
18h
14.0 mm
1:45am 18/01/2026
7:45pm 18/01/2026
1 in 1 years
100.0 %
24h
14.0 mm
7:45pm 17/01/2026
7:45pm 18/01/2026
1 in 1 years
100.0 %
30h
14.0 mm
3:15pm 17/01/2026
9:15pm 18/01/2026
1 in 1 years
100.0 %
36h
14.0 mm
3:15pm 17/01/2026
3:15am 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.