4:00am 26/05/2026 to 4:00am 28/05/2026
Maximum observed rainfall by duration, estimated return period and AEP
Duration
Rainfall
Start
End
Years
AEP
15m
13.0 mm
2:00am 28/05/2026
2:15am 28/05/2026
1 in 1.1 years
89.46 %
30m
19.0 mm
2:00am 28/05/2026
2:30am 28/05/2026
1 in 1.1 years
87.25 %
45m
20.0 mm
2:00am 28/05/2026
2:45am 28/05/2026
1 in 1.1 years
91.0 %
60m
23.0 mm
2:00am 28/05/2026
3:00am 28/05/2026
1 in 1.1 years
89.2 %
90m
25.0 mm
2:00am 28/05/2026
3:30am 28/05/2026
1 in 1.1 years
90.73 %
120m
28.0 mm
1:45am 28/05/2026
3:45am 28/05/2026
1 in 1.1 years
89.35 %
3h
28.0 mm
12:45am 28/05/2026
3:45am 28/05/2026
1 in 1.1 years
93.67 %
4h
28.0 mm
11:15pm 27/05/2026
3:45am 28/05/2026
1 in 1.0 years
96.35 %
6h
28.0 mm
9:45pm 27/05/2026
3:45am 28/05/2026
1 in 1.0 years
97.77 %
9h
28.0 mm
6:45pm 27/05/2026
3:45am 28/05/2026
1 in 1.0 years
98.64 %
12h
28.0 mm
3:45pm 27/05/2026
3:45am 28/05/2026
1 in 1.0 years
99.08 %
18h
28.0 mm
9:45am 27/05/2026
3:45am 28/05/2026
1 in 1.0 years
99.69 %
24h
28.0 mm
3:45am 27/05/2026
3:45am 28/05/2026
1 in 1.0 years
99.84 %
30h
28.0 mm
9:45pm 26/05/2026
3:45am 28/05/2026
1 in 1.0 years
99.91 %
36h
28.0 mm
3:45pm 26/05/2026
3:45am 28/05/2026
1 in 1.0 years
99.97 %
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.

