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
9.0 mm
2:15am 28/05/2026
2:30am 28/05/2026
1 in 1.0 years
98.51 %
30m
16.0 mm
2:15am 28/05/2026
2:45am 28/05/2026
1 in 1.1 years
94.5 %
45m
20.0 mm
2:15am 28/05/2026
3:00am 28/05/2026
1 in 1.1 years
91.47 %
60m
22.0 mm
2:15am 28/05/2026
3:15am 28/05/2026
1 in 1.1 years
91.38 %
90m
24.0 mm
2:15am 28/05/2026
3:45am 28/05/2026
1 in 1.1 years
92.41 %
120m
24.0 mm
1:45am 28/05/2026
3:45am 28/05/2026
1 in 1.1 years
95.16 %
3h
24.0 mm
12:45am 28/05/2026
3:45am 28/05/2026
1 in 1.0 years
96.87 %
4h
24.0 mm
11:15pm 27/05/2026
3:45am 28/05/2026
1 in 1.0 years
98.29 %
6h
24.0 mm
9:45pm 27/05/2026
3:45am 28/05/2026
1 in 1.0 years
98.66 %
9h
24.0 mm
6:45pm 27/05/2026
3:45am 28/05/2026
1 in 1.0 years
99.18 %
12h
24.0 mm
3:45pm 27/05/2026
3:45am 28/05/2026
1 in 1.0 years
99.59 %
18h
24.0 mm
9:45am 27/05/2026
3:45am 28/05/2026
1 in 1.0 years
99.84 %
24h
24.0 mm
3:45am 27/05/2026
3:45am 28/05/2026
1 in 1.0 years
99.93 %
30h
24.0 mm
9:45pm 26/05/2026
3:45am 28/05/2026
1 in 1.0 years
100.0 %
36h
24.0 mm
3:45pm 26/05/2026
3:45am 28/05/2026
1 in 1 years
100.0 %
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.

