1:45pm 17/05/2026 to 1:45pm 19/05/2026
Maximum observed rainfall by duration, estimated return period and AEP
Duration
Rainfall
Start
End
Years
AEP
15m
1.8 mm
10:30pm 18/05/2026
10:45pm 18/05/2026
1 in 1 years
100.0 %
30m
3.0 mm
10:30pm 18/05/2026
11:00pm 18/05/2026
1 in 1 years
100.0 %
45m
4.0 mm
10:15pm 18/05/2026
11:00pm 18/05/2026
1 in 1 years
100.0 %
60m
5.6 mm
10:30pm 18/05/2026
11:30pm 18/05/2026
1 in 1 years
100.0 %
90m
7.6 mm
10:15pm 18/05/2026
11:45pm 18/05/2026
1 in 1 years
100.0 %
120m
10.0 mm
10:30pm 18/05/2026
12:30am 19/05/2026
1 in 1 years
100.0 %
3h
13.8 mm
10:30pm 18/05/2026
1:30am 19/05/2026
1 in 1 years
100.0 %
4h
18.8 mm
8:15pm 18/05/2026
12:45am 19/05/2026
1 in 1.0 years
99.94 %
6h
23.6 mm
7:45pm 18/05/2026
1:45am 19/05/2026
1 in 1.0 years
99.72 %
9h
28.4 mm
5:30pm 18/05/2026
2:30am 19/05/2026
1 in 1.0 years
99.69 %
12h
30.8 mm
3:15pm 18/05/2026
3:15am 19/05/2026
1 in 1.0 years
99.84 %
18h
40.8 mm
6:30pm 18/05/2026
12:30pm 19/05/2026
1 in 1.0 years
99.32 %
24h
46.8 mm
12:45pm 18/05/2026
12:45pm 19/05/2026
1 in 1.0 years
99.21 %
30h
48.4 mm
7:45am 18/05/2026
1:45pm 19/05/2026
1 in 1.0 years
99.69 %
36h
48.4 mm
1:45am 18/05/2026
1:45pm 19/05/2026
1 in 1.0 years
99.87 %
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.

