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Observations for this analysis :
Maximum observed rainfall by duration, estimated return period and AEP
Duration
Rainfall
Start
End
Years
AEP
15m
4.5 mm
12:30am 25/06/2026
12:45am 25/06/2026
1 in 1 years
100.0 %
30m
5.0 mm
12:15am 25/06/2026
12:45am 25/06/2026
1 in 1 years
100.0 %
45m
7.5 mm
12:00am 25/06/2026
12:45am 25/06/2026
1 in 1 years
100.0 %
60m
8.0 mm
7:45am 25/06/2026
8:45am 25/06/2026
1 in 1 years
100.0 %
90m
11.0 mm
7:45am 25/06/2026
9:15am 25/06/2026
1 in 1 years
100.0 %
120m
13.0 mm
7:45am 25/06/2026
9:45am 25/06/2026
1 in 1 years
100.0 %
3h
14.5 mm
7:30am 25/06/2026
10:30am 25/06/2026
1 in 1 years
100.0 %
4h
21.0 mm
5:15am 25/06/2026
9:45am 25/06/2026
1 in 1.0 years
99.85 %
6h
23.0 mm
4:30am 25/06/2026
10:30am 25/06/2026
1 in 1.0 years
99.88 %
9h
30.0 mm
12:00am 25/06/2026
9:00am 25/06/2026
1 in 1.0 years
99.54 %
12h
34.5 mm
10:30pm 24/06/2026
10:30am 25/06/2026
1 in 1.0 years
99.34 %
18h
35.0 mm
4:30pm 24/06/2026
10:30am 25/06/2026
1 in 1.0 years
99.87 %
24h
36.0 mm
9:30pm 24/06/2026
9:30pm 25/06/2026
1 in 1.0 years
99.98 %
30h
36.0 mm
4:15pm 24/06/2026
10:15pm 25/06/2026
1 in 1 years
100.0 %
36h
36.0 mm
10:15am 24/06/2026
10:15pm 25/06/2026
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.
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