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5:30am 21/05/2026 to 5:30am 23/05/2026
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
3:45am 23/05/2026
4:00am 23/05/2026
1 in 1 years
100.0 %
30m
2.4 mm
3:45am 23/05/2026
4:15am 23/05/2026
1 in 1 years
100.0 %
45m
3.4 mm
3:45am 23/05/2026
4:30am 23/05/2026
1 in 1 years
100.0 %
60m
3.8 mm
3:30am 23/05/2026
4:30am 23/05/2026
1 in 1 years
100.0 %
90m
5.0 mm
3:30am 23/05/2026
5:00am 23/05/2026
1 in 1 years
100.0 %
120m
5.6 mm
3:00am 23/05/2026
5:00am 23/05/2026
1 in 1 years
100.0 %
3h
6.0 mm
2:00am 23/05/2026
5:00am 23/05/2026
1 in 1 years
100.0 %
4h
6.4 mm
1:00am 23/05/2026
5:30am 23/05/2026
1 in 1 years
100.0 %
6h
7.2 mm
11:00pm 22/05/2026
5:00am 23/05/2026
1 in 1 years
100.0 %
9h
8.4 mm
8:30pm 22/05/2026
5:30am 23/05/2026
1 in 1 years
100.0 %
12h
8.6 mm
5:30pm 22/05/2026
5:30am 23/05/2026
1 in 1 years
100.0 %
18h
9.2 mm
11:30am 22/05/2026
5:30am 23/05/2026
1 in 1 years
100.0 %
24h
9.6 mm
5:30am 22/05/2026
5:30am 23/05/2026
1 in 1 years
100.0 %
30h
10.2 mm
11:30pm 21/05/2026
5:30am 23/05/2026
1 in 1 years
100.0 %
36h
11.8 mm
5:00pm 21/05/2026
5:00am 23/05/2026
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.
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