Dark mode
Light mode-35.19738, 149.16820
5:00pm 24/02/2018 to 12:00pm 26/02/2018
You can find out more about Design Rainfall and IFD here.
Observations for this analysis :
Maximum observed rainfall by duration, estimated return period and AEP
Duration
Rainfall
Start
End
Years
AEP
10m
9.2 mm
8:30am 25/02/2018
8:40am 25/02/2018
1 in 1.9 years
51.63 %
20m
13.9 mm
8:20am 25/02/2018
8:40am 25/02/2018
1 in 2.3 years
44.22 %
30m
18.4 mm
8:20am 25/02/2018
8:50am 25/02/2018
1 in 3.2 years
31.63 %
60m
28.8 mm
7:50am 25/02/2018
8:50am 25/02/2018
1 in 6.8 years
14.65 %
90m
36.8 mm
7:40am 25/02/2018
9:10am 25/02/2018
1 in 11.4 years
8.75 %
120m
41.6 mm
8:00am 25/02/2018
10:00am 25/02/2018
1 in 13.8 years
7.27 %
3h
53.6 mm
7:30am 25/02/2018
10:30am 25/02/2018
1 in 26.1 years
3.83 %
4h
61.3 mm
7:40am 25/02/2018
12:10pm 25/02/2018
1 in 26.9 years
3.71 %
6h
67.1 mm
6:20am 25/02/2018
12:20pm 25/02/2018
1 in 26.4 years
3.79 %
9h
70.0 mm
3:00am 25/02/2018
12:00pm 25/02/2018
1 in 17.4 years
5.76 %
12h
73.1 mm
12:10am 25/02/2018
12:10pm 25/02/2018
1 in 13.8 years
7.24 %
18h
77.5 mm
7:00pm 24/02/2018
1:00pm 25/02/2018
1 in 10.0 years
10.0 %
24h
79.6 mm
6:20am 25/02/2018
6:20am 26/02/2018
1 in 7.7 years
12.96 %
30h
85.6 mm
12:10am 25/02/2018
6:10am 26/02/2018
1 in 7.8 years
12.84 %
36h
89.5 mm
5:30pm 24/02/2018
5:30am 26/02/2018
1 in 7.5 years
13.36 %
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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