2:15pm 18/05/2026 to 2:15pm 20/05/2026
Maximum observed rainfall by duration, estimated return period and AEP
Duration
Rainfall
Start
End
Years
AEP
15m
0.6 mm
8:30am 20/05/2026
8:45am 20/05/2026
1 in 1 years
100.0 %
30m
1.0 mm
8:30am 20/05/2026
9:00am 20/05/2026
1 in 1 years
100.0 %
45m
1.0 mm
8:15am 20/05/2026
9:00am 20/05/2026
1 in 1 years
100.0 %
60m
1.0 mm
8:00am 20/05/2026
9:00am 20/05/2026
1 in 1 years
100.0 %
90m
1.2 mm
8:15am 20/05/2026
9:45am 20/05/2026
1 in 1 years
100.0 %
120m
1.4 mm
7:00am 20/05/2026
9:00am 20/05/2026
1 in 1 years
100.0 %
3h
1.6 mm
6:45am 20/05/2026
9:45am 20/05/2026
1 in 1 years
100.0 %
4h
2.0 mm
8:15am 20/05/2026
12:45pm 20/05/2026
1 in 1 years
100.0 %
6h
2.4 mm
6:45am 20/05/2026
12:45pm 20/05/2026
1 in 1 years
100.0 %
9h
2.4 mm
3:45am 20/05/2026
12:45pm 20/05/2026
1 in 1 years
100.0 %
12h
2.4 mm
12:45am 20/05/2026
12:45pm 20/05/2026
1 in 1 years
100.0 %
18h
2.4 mm
6:45pm 19/05/2026
12:45pm 20/05/2026
1 in 1 years
100.0 %
24h
2.4 mm
12:45pm 19/05/2026
12:45pm 20/05/2026
1 in 1 years
100.0 %
30h
3.2 mm
8:00am 19/05/2026
2:00pm 20/05/2026
1 in 1 years
100.0 %
36h
3.4 mm
2:00am 19/05/2026
2:00pm 20/05/2026
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.

