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
16.0 mm
2:00am 28/05/2026
2:15am 28/05/2026
1 in 1.5 years
67.85 %
30m
20.0 mm
1:45am 28/05/2026
2:15am 28/05/2026
1 in 1.3 years
75.5 %
45m
20.0 mm
1:30am 28/05/2026
2:15am 28/05/2026
1 in 1.1 years
87.52 %
60m
23.0 mm
1:45am 28/05/2026
2:45am 28/05/2026
1 in 1.2 years
84.32 %
90m
23.0 mm
1:15am 28/05/2026
2:45am 28/05/2026
1 in 1.1 years
90.34 %
120m
24.0 mm
1:30am 28/05/2026
3:30am 28/05/2026
1 in 1.1 years
91.7 %
3h
25.0 mm
1:00am 28/05/2026
4:00am 28/05/2026
1 in 1.1 years
94.46 %
4h
25.0 mm
11:30pm 27/05/2026
4:00am 28/05/2026
1 in 1.0 years
96.72 %
6h
25.0 mm
10:00pm 27/05/2026
4:00am 28/05/2026
1 in 1.0 years
98.17 %
9h
25.0 mm
7:00pm 27/05/2026
4:00am 28/05/2026
1 in 1.0 years
98.78 %
12h
29.0 mm
2:45pm 27/05/2026
2:45am 28/05/2026
1 in 1.0 years
98.33 %
18h
32.0 mm
10:00am 27/05/2026
4:00am 28/05/2026
1 in 1.0 years
98.39 %
24h
32.0 mm
4:00am 27/05/2026
4:00am 28/05/2026
1 in 1.0 years
98.83 %
30h
32.0 mm
10:00pm 26/05/2026
4:00am 28/05/2026
1 in 1.0 years
99.17 %
36h
32.0 mm
4:00pm 26/05/2026
4:00am 28/05/2026
1 in 1.0 years
99.46 %
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.

