Dark mode
Light mode-35.20644, 149.15502
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
9.3 mm
8:20am 25/02/2018
8:30am 25/02/2018
1 in 1.9 years
51.29 %
20m
17.4 mm
8:20am 25/02/2018
8:40am 25/02/2018
1 in 4.3 years
23.06 %
30m
21.0 mm
8:20am 25/02/2018
8:50am 25/02/2018
1 in 4.6 years
21.52 %
60m
35.4 mm
7:50am 25/02/2018
8:50am 25/02/2018
1 in 16.1 years
6.2 %
90m
41.3 mm
7:40am 25/02/2018
9:10am 25/02/2018
1 in 18.9 years
5.3 %
120m
46.0 mm
7:40am 25/02/2018
9:40am 25/02/2018
1 in 21.2 years
4.72 %
3h
59.0 mm
7:00am 25/02/2018
10:00am 25/02/2018
1 in 41.1 years
2.43 %
4h
66.2 mm
7:00am 25/02/2018
11:30am 25/02/2018
1 in 38.6 years
2.59 %
6h
70.0 mm
6:50am 25/02/2018
12:50pm 25/02/2018
1 in 32.3 years
3.09 %
9h
72.3 mm
3:10am 25/02/2018
12:10pm 25/02/2018
1 in 20.3 years
4.94 %
12h
74.7 mm
12:10am 25/02/2018
12:10pm 25/02/2018
1 in 15.5 years
6.44 %
18h
78.5 mm
7:00pm 24/02/2018
1:00pm 25/02/2018
1 in 10.9 years
9.16 %
24h
84.1 mm
6:20am 25/02/2018
6:20am 26/02/2018
1 in 9.9 years
10.09 %
30h
89.0 mm
12:10am 25/02/2018
6:10am 26/02/2018
1 in 9.4 years
10.62 %
36h
92.3 mm
7:00pm 24/02/2018
7:00am 26/02/2018
1 in 8.8 years
11.39 %
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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