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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
2.6 mm
10:30am 08/07/2026
10:40am 08/07/2026
1 in over 2000 years
< 0.05 %
20m
2.6 mm
10:20am 08/07/2026
10:40am 08/07/2026
1 in over 2000 years
< 0.05 %
30m
2.6 mm
10:10am 08/07/2026
10:40am 08/07/2026
1 in over 2000 years
< 0.05 %
60m
2.6 mm
9:40am 08/07/2026
10:40am 08/07/2026
1 in over 2000 years
< 0.05 %
90m
2.6 mm
9:10am 08/07/2026
10:40am 08/07/2026
1 in over 2000 years
< 0.05 %
120m
2.6 mm
8:40am 08/07/2026
10:40am 08/07/2026
1 in over 2000 years
< 0.05 %
3h
2.6 mm
7:40am 08/07/2026
10:40am 08/07/2026
1 in over 2000 years
< 0.05 %
4h
2.6 mm
6:10am 08/07/2026
10:40am 08/07/2026
1 in over 2000 years
< 0.05 %
6h
2.6 mm
4:40am 08/07/2026
10:40am 08/07/2026
1 in over 2000 years
< 0.05 %
9h
2.6 mm
1:40am 08/07/2026
10:40am 08/07/2026
1 in over 2000 years
< 0.05 %
12h
2.6 mm
10:40pm 07/07/2026
10:40am 08/07/2026
1 in over 2000 years
< 0.05 %
18h
2.8 mm
10:00am 08/07/2026
4:00am 09/07/2026
1 in over 2000 years
< 0.05 %
24h
3.0 mm
10:40am 07/07/2026
10:40am 08/07/2026
1 in over 2000 years
< 0.05 %
30h
3.0 mm
4:40am 07/07/2026
10:40am 08/07/2026
1 in over 2000 years
< 0.05 %
36h
3.0 mm
4:00am 07/07/2026
4:00pm 08/07/2026
1 in over 2000 years
< 0.05 %
48h
3.2 mm
4:00am 07/07/2026
4:00am 09/07/2026
1 in over 2000 years
< 0.05 %
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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