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Light mode11:30pm 24/05/2026 to 11:30pm 26/05/2026
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
4.0 mm
7:45pm 25/05/2026
8:00pm 25/05/2026
1 in 1 years
100.0 %
30m
6.0 mm
7:45pm 25/05/2026
8:15pm 25/05/2026
1 in 1 years
100.0 %
45m
9.0 mm
7:45pm 25/05/2026
8:30pm 25/05/2026
1 in 1.0 years
99.98 %
60m
12.0 mm
7:45pm 25/05/2026
8:45pm 25/05/2026
1 in 1.0 years
99.82 %
90m
12.0 mm
7:15pm 25/05/2026
8:45pm 25/05/2026
1 in 1.0 years
99.88 %
120m
13.0 mm
6:45pm 25/05/2026
8:45pm 25/05/2026
1 in 1.0 years
99.86 %
3h
13.0 mm
5:45pm 25/05/2026
8:45pm 25/05/2026
1 in 1.0 years
99.91 %
4h
15.0 mm
6:30pm 25/05/2026
11:00pm 25/05/2026
1 in 1.0 years
99.86 %
6h
15.0 mm
5:00pm 25/05/2026
11:00pm 25/05/2026
1 in 1.0 years
99.9 %
9h
18.0 mm
10:45am 26/05/2026
7:45pm 26/05/2026
1 in 1.0 years
99.84 %
12h
19.0 mm
8:30am 26/05/2026
8:30pm 26/05/2026
1 in 1.0 years
99.85 %
18h
23.0 mm
7:45pm 25/05/2026
1:45pm 26/05/2026
1 in 1.0 years
99.8 %
24h
33.0 mm
7:45pm 25/05/2026
7:45pm 26/05/2026
1 in 1.0 years
98.9 %
30h
35.0 mm
2:30pm 25/05/2026
8:30pm 26/05/2026
1 in 1.0 years
98.94 %
36h
35.0 mm
8:30am 25/05/2026
8:30pm 26/05/2026
1 in 1.0 years
99.18 %
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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