2:00pm 17/01/2026 to 2:00pm 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
18.0 mm
3:00pm 17/01/2026
3:15pm 17/01/2026
1 in 1.1 years
94.29 %
30m
19.0 mm
3:00pm 17/01/2026
3:30pm 17/01/2026
1 in 1.0 years
99.34 %
45m
19.0 mm
2:45pm 17/01/2026
3:30pm 17/01/2026
1 in 1.0 years
99.9 %
60m
19.0 mm
2:30pm 17/01/2026
3:30pm 17/01/2026
1 in 1 years
100.0 %
90m
25.0 mm
3:00pm 17/01/2026
4:30pm 17/01/2026
1 in 1.0 years
99.87 %
120m
25.0 mm
2:30pm 17/01/2026
4:30pm 17/01/2026
1 in 1.0 years
100.0 %
3h
25.0 mm
2:15pm 17/01/2026
5:15pm 17/01/2026
1 in 1 years
100.0 %
4h
25.0 mm
2:15pm 17/01/2026
6:45pm 17/01/2026
1 in 1 years
100.0 %
6h
26.0 mm
3:00pm 17/01/2026
9:00pm 17/01/2026
1 in 1 years
100.0 %
9h
44.0 mm
3:00pm 17/01/2026
12:00am 18/01/2026
1 in 1.0 years
99.98 %
12h
48.0 mm
2:15pm 17/01/2026
2:15am 18/01/2026
1 in 1 years
100.0 %
18h
48.0 mm
2:15pm 17/01/2026
8:15am 18/01/2026
1 in 1 years
100.0 %
24h
48.0 mm
2:15pm 17/01/2026
2:15pm 18/01/2026
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.