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Light mode 4:45am 18/06/2026 to 4:45am 20/06/2026
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
4.2 mm
3:45am 20/06/2026
4:00am 20/06/2026
1 in 1.0 years
98.54 %
30m
4.8 mm
3:45am 20/06/2026
4:15am 20/06/2026
1 in 1.0 years
99.85 %
45m
4.8 mm
3:30am 20/06/2026
4:15am 20/06/2026
1 in 1 years
100.0 %
60m
5.2 mm
1:15am 20/06/2026
2:15am 20/06/2026
1 in 1 years
100.0 %
90m
7.0 mm
1:15am 20/06/2026
2:45am 20/06/2026
1 in 1 years
100.0 %
120m
7.6 mm
2:00am 20/06/2026
4:00am 20/06/2026
1 in 1 years
100.0 %
3h
12.4 mm
1:15am 20/06/2026
4:15am 20/06/2026
1 in 1.0 years
97.22 %
4h
13.6 mm
11:45pm 19/06/2026
4:15am 20/06/2026
1 in 1.0 years
98.3 %
6h
14.4 mm
10:00pm 19/06/2026
4:00am 20/06/2026
1 in 1.0 years
98.64 %
9h
21.0 mm
7:30pm 19/06/2026
4:30am 20/06/2026
1 in 1.1 years
89.92 %
12h
21.0 mm
4:30pm 19/06/2026
4:30am 20/06/2026
1 in 1.0 years
95.28 %
18h
21.4 mm
10:30am 19/06/2026
4:30am 20/06/2026
1 in 1.0 years
98.17 %
24h
21.4 mm
4:30am 19/06/2026
4:30am 20/06/2026
1 in 1.0 years
98.88 %
30h
22.6 mm
10:15pm 18/06/2026
4:15am 20/06/2026
1 in 1.0 years
98.97 %
36h
22.6 mm
4:15pm 18/06/2026
4:15am 20/06/2026
1 in 1.0 years
99.42 %
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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