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Observations for this analysis :
Maximum observed rainfall by duration, estimated return period and AEP
Duration
Rainfall
Start
End
Years
AEP
10m
0.2 mm
2:40am 21/06/2026
2:50am 21/06/2026
1 in 1 years
100.0 %
20m
0.2 mm
2:30am 21/06/2026
2:50am 21/06/2026
1 in 1 years
100.0 %
30m
0.4 mm
2:40am 21/06/2026
3:10am 21/06/2026
1 in 1 years
100.0 %
60m
0.6 mm
3:50am 21/06/2026
4:50am 21/06/2026
1 in 1 years
100.0 %
90m
0.8 mm
2:30am 21/06/2026
4:00am 21/06/2026
1 in 1 years
100.0 %
120m
1.0 mm
2:20am 21/06/2026
4:20am 21/06/2026
1 in 1 years
100.0 %
3h
1.4 mm
2:20am 21/06/2026
5:20am 21/06/2026
1 in 1 years
100.0 %
4h
1.4 mm
12:50am 21/06/2026
5:20am 21/06/2026
1 in 1 years
100.0 %
6h
1.4 mm
11:20pm 20/06/2026
5:20am 21/06/2026
1 in 1 years
100.0 %
9h
1.4 mm
8:20pm 20/06/2026
5:20am 21/06/2026
1 in 1 years
100.0 %
12h
1.4 mm
5:20pm 20/06/2026
5:20am 21/06/2026
1 in 1 years
100.0 %
18h
1.4 mm
11:20am 20/06/2026
5:20am 21/06/2026
1 in 1 years
100.0 %
24h
1.4 mm
6:00am 20/06/2026
6:00am 21/06/2026
1 in 1 years
100.0 %
30h
1.4 mm
6:00am 20/06/2026
12:00pm 21/06/2026
1 in 1 years
100.0 %
36h
1.4 mm
6:00am 20/06/2026
6:00pm 21/06/2026
1 in 1 years
100.0 %
48h
1.4 mm
6:00am 20/06/2026
6:00am 22/06/2026
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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