8:20pm 04/05/2026 to 8:20pm 06/05/2026
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
19.6 mm
3:50am 06/05/2026
4:00am 06/05/2026
1 in 3.4 years
29.59 %
20m
35.6 mm
3:40am 06/05/2026
4:00am 06/05/2026
1 in 8.6 years
11.63 %
30m
53.0 mm
3:30am 06/05/2026
4:00am 06/05/2026
1 in 27.7 years
3.62 %
60m
69.8 mm
3:20am 06/05/2026
4:20am 06/05/2026
1 in 23.1 years
4.33 %
90m
70.4 mm
2:50am 06/05/2026
4:20am 06/05/2026
1 in 9.9 years
10.06 %
120m
70.8 mm
2:50am 06/05/2026
4:50am 06/05/2026
1 in 6.3 years
15.82 %
3h
73.0 mm
1:10am 06/05/2026
4:10am 06/05/2026
1 in 3.9 years
25.91 %
4h
83.8 mm
11:40pm 05/05/2026
4:10am 06/05/2026
1 in 3.5 years
28.32 %
6h
87.0 mm
10:50pm 05/05/2026
4:50am 06/05/2026
1 in 2.8 years
36.3 %
9h
87.4 mm
10:00pm 05/05/2026
7:00am 06/05/2026
1 in 1.9 years
53.27 %
12h
87.4 mm
7:00pm 05/05/2026
7:00am 06/05/2026
1 in 1.5 years
65.02 %
18h
88.4 mm
10:50pm 05/05/2026
4:50pm 06/05/2026
1 in 1.3 years
77.45 %
24h
88.4 mm
8:20pm 05/05/2026
8:20pm 06/05/2026
1 in 1.1 years
87.16 %
30h
88.4 mm
2:20pm 05/05/2026
8:20pm 06/05/2026
1 in 1.1 years
91.06 %
36h
88.4 mm
8:20am 05/05/2026
8:20pm 06/05/2026
1 in 1.1 years
94.3 %
48h
88.4 mm
8:20pm 04/05/2026
8:20pm 06/05/2026
1 in 1.0 years
96.94 %
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.