Dark mode
Light mode-35.26184, 149.11690
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
8.4 mm
8:10am 25/02/2018
8:20am 25/02/2018
1 in 1.6 years
61.75 %
20m
16.4 mm
8:10am 25/02/2018
8:30am 25/02/2018
1 in 3.5 years
28.72 %
30m
24.1 mm
8:00am 25/02/2018
8:30am 25/02/2018
1 in 7.4 years
13.52 %
60m
43.5 mm
7:50am 25/02/2018
8:50am 25/02/2018
1 in 38.6 years
2.59 %
90m
53.8 mm
7:30am 25/02/2018
9:00am 25/02/2018
1 in 61.4 years
1.63 %
120m
60.8 mm
7:30am 25/02/2018
9:30am 25/02/2018
1 in 73.5 years
1.36 %
3h
65.0 mm
7:10am 25/02/2018
10:10am 25/02/2018
1 in 52.9 years
1.89 %
4h
74.5 mm
7:20am 25/02/2018
11:50am 25/02/2018
1 in 54.7 years
1.83 %
6h
76.5 mm
6:40am 25/02/2018
12:40pm 25/02/2018
1 in 39.7 years
2.52 %
9h
77.7 mm
3:00am 25/02/2018
12:00pm 25/02/2018
1 in 23.2 years
4.31 %
12h
79.2 mm
1:40am 25/02/2018
1:40pm 25/02/2018
1 in 16.7 years
6.0 %
18h
84.9 mm
6:40pm 24/02/2018
12:40pm 25/02/2018
1 in 12.7 years
7.86 %
24h
90.4 mm
6:40am 25/02/2018
6:40am 26/02/2018
1 in 11.3 years
8.88 %
30h
93.1 mm
1:40am 25/02/2018
7:40am 26/02/2018
1 in 9.5 years
10.51 %
36h
98.8 mm
6:40pm 24/02/2018
6:40am 26/02/2018
1 in 9.7 years
10.28 %
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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