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2:00pm 18/05/2026 to 2:00pm 20/05/2026
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
2.5 mm
2:15pm 18/05/2026
2:30pm 18/05/2026
1 in 1 years
100.0 %
30m
3.0 mm
11:15pm 18/05/2026
11:45pm 18/05/2026
1 in 1 years
100.0 %
45m
3.5 mm
11:00pm 18/05/2026
11:45pm 18/05/2026
1 in 1 years
100.0 %
60m
4.0 mm
10:45pm 18/05/2026
11:45pm 18/05/2026
1 in 1 years
100.0 %
90m
5.5 mm
10:15pm 18/05/2026
11:45pm 18/05/2026
1 in 1 years
100.0 %
120m
7.0 mm
9:45pm 18/05/2026
11:45pm 18/05/2026
1 in 1 years
100.0 %
3h
9.5 mm
11:15pm 18/05/2026
2:15am 19/05/2026
1 in 1 years
100.0 %
4h
13.5 mm
9:45pm 18/05/2026
2:15am 19/05/2026
1 in 1 years
100.0 %
6h
15.5 mm
8:30pm 18/05/2026
2:30am 19/05/2026
1 in 1 years
100.0 %
9h
20.0 mm
5:30pm 18/05/2026
2:30am 19/05/2026
1 in 1 years
100.0 %
12h
23.0 mm
2:15pm 18/05/2026
2:15am 19/05/2026
1 in 1 years
100.0 %
18h
24.5 mm
2:15pm 18/05/2026
8:15am 19/05/2026
1 in 1 years
100.0 %
24h
26.0 mm
2:15pm 18/05/2026
2:15pm 19/05/2026
1 in 1 years
100.0 %
30h
28.0 mm
2:15pm 18/05/2026
8:15pm 19/05/2026
1 in 1 years
100.0 %
36h
28.0 mm
2:15pm 18/05/2026
2:15am 20/05/2026
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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