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Light mode10:20pm 24/05/2026 to 10:20pm 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
10m
4.6 mm
1:50am 26/05/2026
2:00am 26/05/2026
1 in 1.0 years
99.57 %
15m
0.0 mm
7:12am 25/05/2026
7:27am 25/05/2026
1 in 1 years
100.0 %
20m
7.4 mm
1:30am 26/05/2026
1:50am 26/05/2026
1 in 1.0 years
98.75 %
30m
12.0 mm
1:30am 26/05/2026
2:00am 26/05/2026
1 in 1.1 years
90.66 %
60m
18.8 mm
1:30am 26/05/2026
2:30am 26/05/2026
1 in 1.4 years
73.22 %
90m
24.4 mm
1:30am 26/05/2026
3:00am 26/05/2026
1 in 1.7 years
60.35 %
120m
30.2 mm
1:30am 26/05/2026
3:30am 26/05/2026
1 in 2.1 years
46.72 %
3h
38.4 mm
1:20am 26/05/2026
4:20am 26/05/2026
1 in 3.0 years
33.79 %
4h
41.6 mm
1:20am 26/05/2026
5:50am 26/05/2026
1 in 2.6 years
37.84 %
6h
53.0 mm
1:30am 26/05/2026
7:30am 26/05/2026
1 in 4.5 years
22.46 %
9h
70.0 mm
1:30am 26/05/2026
10:30am 26/05/2026
1 in 8.6 years
11.58 %
12h
80.4 mm
1:20am 26/05/2026
1:20pm 26/05/2026
1 in 11.3 years
8.85 %
18h
84.8 mm
12:30am 26/05/2026
6:30pm 26/05/2026
1 in 9.0 years
11.16 %
24h
84.8 mm
10:20pm 25/05/2026
10:20pm 26/05/2026
1 in 6.7 years
14.96 %
30h
84.8 mm
4:20pm 25/05/2026
10:20pm 26/05/2026
1 in 5.3 years
18.76 %
36h
84.8 mm
10:20am 25/05/2026
10:20pm 26/05/2026
1 in 4.5 years
22.23 %
48h
84.8 mm
10:20pm 24/05/2026
10:20pm 26/05/2026
1 in 3.6 years
27.79 %
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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